Scoping Review on Use of Drugs Targeting Interleukin 1 Pathway in DIRA … · 2018. 11. 24. ·...

18
REVIEW Scoping Review on Use of Drugs Targeting Interleukin 1 Pathway in DIRA and DITRA Francisco Go ´ mez-Garcı ´a . Juan L. Sanz-Cabanillas . Isabel Viguera-Guerra . Beatriz Isla-Tejera . Antonio Ve ´lez-Garcı ´a Nieto . Juan Ruano Received: September 26, 2018 / Published online: November 3, 2018 Ó The Author(s) 2018 ABSTRACT Introduction: Deficiencies in interleukin (IL)-1 receptor (IL-R) antagonist (DIRA) and IL-36R antagonist (DITRA) are rare genetic autoin- flammatory diseases related to alterations in antagonists of the IL-1 pathway. IL-1 antago- nists may represent therapeutic alternatives. Here, we aim to provide a scoping review of knowledge on use of IL-1-targeting drugs in DIRA and DITRA. Methods: An a priori protocol was published, and the study was conducted using the methodology described in the Joanna Briggs Institute Reviewer’s Manual and the recently published PRISMA Extension for Scoping Review statement. A three-step search using MEDLINE and EMBASE databases until March 2018 with additional hand searching was per- formed. Data charting was performed. The search, article selection, and data extraction were carried out by two researchers independently. Results: Twenty-four studies on use of anti-IL-1 drugs were included [15 studies including patients with diagnosis of DIRA (n = 19) and 9 studies including patients with diagnosis of DITRA (n = 9)]. Most studies followed a multi- center observational design. Among all patients who received treatment with anti-IL-1 drugs, nine and four mutations in IL1RN and IL36RN were found, respectively. Patients with DIRA were treated with anakinra (n = 17), canakinu- mab (n = 2), or rinolacept (n = 6). All patients with DITRA were treated with anakinra, and only one case was also treated with canakinu- mab. Time-to-response frequencies were evalu- ated as immediate, short, and medium–long term for DIRA (17/17, 15/17, and 9/10, Enhanced Digital Features To view enhanced digital features for this article go to https://doi.org/10.6084/ m9.figshare.7258685. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s13555- 018-0269-7) contains supplementary material, which is available to authorized users. F. Go ´ mez-Garcı ´a Á J. L. Sanz-Cabanillas Á I. Viguera-Guerra Á B. Isla-Tejera Á A. V.-G. Nieto Á J. Ruano (&) Immune-Mediated Inflammatory Skin Disease Research Group, IMIBIC/Reina Sofı ´a University Hospital/University of Co ´ rdoba, Avenida Mene ´ndez Pidal, Co ´ rdoba 14004, Spain e-mail: [email protected] F. Go ´ mez-Garcı ´a Á J. L. Sanz-Cabanillas Á A. V.-G. Nieto Á J. Ruano Department of Dermatology, Reina Sofı ´a University Hospital, Avenida Mene ´ndez Pidal, Co ´ rdoba 14004, Spain I. Viguera-Guerra Agencia de Evaluacio ´n de Tecnologı ´as Sanitarias de Andalucı ´a (AETSA), Consejerı ´a de Salud, Avda. de la Innovacio ´n, Seville 41020, Spain B. Isla-Tejera Department of Pharmacy, Reina Sofı ´a University Hospital, Avenida Mene ´ndez Pidal, Co ´ rdoba 14004, Spain Dermatol Ther (Heidelb) (2018) 8:539–556 https://doi.org/10.1007/s13555-018-0269-7

Transcript of Scoping Review on Use of Drugs Targeting Interleukin 1 Pathway in DIRA … · 2018. 11. 24. ·...

  • REVIEW

    Scoping Review on Use of Drugs Targeting Interleukin1 Pathway in DIRA and DITRA

    Francisco Gómez-Garcı́a . Juan L. Sanz-Cabanillas . Isabel Viguera-Guerra .

    Beatriz Isla-Tejera . Antonio Vélez-Garcı́a Nieto . Juan Ruano

    Received: September 26, 2018 / Published online: November 3, 2018� The Author(s) 2018

    ABSTRACT

    Introduction: Deficiencies in interleukin (IL)-1receptor (IL-R) antagonist (DIRA) and IL-36Rantagonist (DITRA) are rare genetic autoin-flammatory diseases related to alterations in

    antagonists of the IL-1 pathway. IL-1 antago-nists may represent therapeutic alternatives.Here, we aim to provide a scoping review ofknowledge on use of IL-1-targeting drugs inDIRA and DITRA.Methods: An a priori protocol was published,and the study was conducted using themethodology described in the Joanna BriggsInstitute Reviewer’s Manual and the recentlypublished PRISMA Extension for ScopingReview statement. A three-step search usingMEDLINE and EMBASE databases until March2018 with additional hand searching was per-formed. Data charting was performed. Thesearch, article selection, and data extractionwere carried out by two researchersindependently.Results: Twenty-four studies on use of anti-IL-1drugs were included [15 studies includingpatients with diagnosis of DIRA (n = 19) and 9studies including patients with diagnosis ofDITRA (n = 9)]. Most studies followed a multi-center observational design. Among all patientswho received treatment with anti-IL-1 drugs,nine and four mutations in IL1RN and IL36RNwere found, respectively. Patients with DIRAwere treated with anakinra (n = 17), canakinu-mab (n = 2), or rinolacept (n = 6). All patientswith DITRA were treated with anakinra, andonly one case was also treated with canakinu-mab. Time-to-response frequencies were evalu-ated as immediate, short, and medium–longterm for DIRA (17/17, 15/17, and 9/10,

    Enhanced Digital Features To view enhanced digitalfeatures for this article go to https://doi.org/10.6084/m9.figshare.7258685.

    Electronic supplementary material The onlineversion of this article (https://doi.org/10.1007/s13555-018-0269-7) contains supplementary material, which isavailable to authorized users.

    F. Gómez-Garcı́a � J. L. Sanz-Cabanillas �I. Viguera-Guerra � B. Isla-Tejera � A. V.-G. Nieto �J. Ruano (&)Immune-Mediated Inflammatory Skin DiseaseResearch Group, IMIBIC/Reina Sofı́a UniversityHospital/University of Córdoba, Avenida MenéndezPidal, Córdoba 14004, Spaine-mail: [email protected]

    F. Gómez-Garcı́a � J. L. Sanz-Cabanillas �A. V.-G. Nieto � J. RuanoDepartment of Dermatology, Reina Sofı́a UniversityHospital, Avenida Menéndez Pidal, Córdoba 14004,Spain

    I. Viguera-GuerraAgencia de Evaluación de Tecnologı́as Sanitarias deAndalucı́a (AETSA), Consejerı́a de Salud, Avda. de laInnovación, Seville 41020, Spain

    B. Isla-TejeraDepartment of Pharmacy, Reina Sofı́a UniversityHospital, Avenida Menéndez Pidal, Córdoba 14004,Spain

    Dermatol Ther (Heidelb) (2018) 8:539–556

    https://doi.org/10.1007/s13555-018-0269-7

    http://orcid.org/0000-0002-0286-4107http://dx.doi.org/10.6084/m9.figshare.7258685http://dx.doi.org/10.6084/m9.figshare.7258685http://dx.doi.org/10.6084/m9.figshare.7258685http://dx.doi.org/10.6084/m9.figshare.7258685http://dx.doi.org/10.1007/s13555-018-0269-7http://dx.doi.org/10.1007/s13555-018-0269-7http://dx.doi.org/10.1007/s13555-018-0269-7http://dx.doi.org/10.1007/s13555-018-0269-7https://doi.org/10.1007/s13555-018-0269-7http://crossmark.crossref.org/dialog/?doi=10.1007/s13555-018-0269-7&domain=pdfhttp://crossmark.crossref.org/dialog/?doi=10.1007/s13555-018-0269-7&domain=pdf

  • respectively) and DITRA (7/9, 3/9, and 2/9,respectively). Most DITRA patients in whomanti-IL-1 treatment failed experienced goodresponse to anti-tumor necrosis factor alpha oranti-IL-12/23 drugs. The safety profiles of treat-ments were similar in both diseases.Conclusions: Evidence on use of anti-IL-1 drugsin DIRA and DITRA is scarce and based onobservational studies. Larger studies with bettermethodological quality are needed to increaseconfidence in use of these drugs in patients withDIRA and DITRA.

    Keywords: Anakinra; Anti-IL-1 drugs;Canakinumab; Deficiency of interleukin(IL)-1receptor(R) antagonist (DIRA); Geneticautoinflammatory diseases; Deficiency of IL-36R antagonist (DITRA); Rilonacept; Scopingreview

    INTRODUCTION

    Hereditary autoinflammatory diseases are aheterogeneous group of rare genetic disorders inwhich an exaggerated innate immune responseis the pathogenic basis of recurrent episodes ofinflammation. These inflammatory episodesaffect the skin, joints, bones, eyes, gastroin-testinal tract, and central nervous system inassociation with nonspecific signs of systemicinflammation and a lack of high-titer circulat-ing auto-antibodies or antigen-specific T cells[1].

    Alterations in the interleukin (IL)-1 pathwayhave been shown to be involved in the patho-genesis of some diseases. IL-1 contributes tocoordination of the early response of the immunesystem to exogenous and endogenous antigens,serving as a prototypic alarm cytokine [2]. Theinterleukin IL-1 family comprises 11 members,including seven proinflammatory agonists (IL-1a,IL-1b, IL-18, IL-33, IL-36a, IL-36b, and IL-36c) andfour defined or putative antagonists [IL-1 receptor(IL-1R) antagonist (IL-1RA), IL-36R antagonist (IL-36RA), IL-37, and IL-38], which exert antiinflam-matory activity [3]. IL-1-related hereditary dis-eases are considered secondary to genetic defectsin both activating and inhibitory pathway mole-cules. Notably, cryopyrin-associated

    autoinflammatory syndromes (CAPSs) are pri-mary diseases caused by alterations in IL-1 path-way agonists. Moreover, several new diseasesassociated with alterations in IL-1RA, such asdeficiency of IL-1RA (DIRA) and deficiency of IL-36RA (DITRA), have recently been identified. IL-1RA, encoded by the IL1RN gene, functions as adecoy protein that binds to IL-1R but does notresult in any response signal. IL-36RA, encoded bythe IL36RN gene, has been shown to specificallyinhibit IL-1-induced activation of nuclear factor-jB. Both IL-1RA and IL-36RA are encoded onchromosome 2 and show 44% homology. How-ever, IL-1RA is expressed ubiquitously, whereasIL-36R expression is restricted to epithelial cells,including those in the skin [4]. This fact mayexplain the observation that both DIRA andDITRA share similar skin manifestations but withthe difference that extracutaneous involvement isobserved in DIRA.

    DIRA is a rare life-threatening autoinflam-matory disease first described in 2009 [1, 5].DIRA is caused by autosomal recessive muta-tions in the IL1RN gene and presents clinicallyas early onset of generalized cutaneous pustu-losis, multifocal osteomyelitis, and high levelsof acute-phase reactants. DITRA is a morerecently described hereditary autoinflammatorydisease caused by homozygous or compoundheterozygous mutations in the IL36RN gene andcharacterized by repeated flares of generalizedpustular psoriasis associated with high fever,asthenia, and systemic inflammation [6].

    Various treatment strategies, such as antiin-flammatories [nonsteroidal antiinflammatorydrugs (NSAIDs) and corticosteroids], antimicro-bial agents (antifungal and antibacterialagents), and immunosuppressants (methotrex-ate, cyclosporine, inhibitors of tumor necrosisfactor-a, and anti-IL-17 monoclonal antibod-ies), have been applied for treatment of DIRAand DITRA, with variable responses. As knowl-edge of the pathogenesis of these diseases hasimproved, increasingly specific treatments havebeen developed. Accordingly, four drugs tar-geting the IL-1 pathway have been developed.These include anakinra, a recombinant IL-1RAthat competes with IL-1R agonists for itsreceptor [7]; rilonacept, which acts as a solubledecoy to prevent activation of IL-1RI [8];

    540 Dermatol Ther (Heidelb) (2018) 8:539–556

  • canakinumab, a human monoclonal antibodytargeting IL-1b [9]; and MABp1, an anti-IL-1amonoclonal antibody [10]. Although the speci-ficities of their mechanisms of action suggestthe feasibility of achieving sufficient efficacy,the molecular differences found in both DIRAand DITRA can yield different levels ofresponse. Moreover, these drugs are associatedwith short- and long-term adverse effects.Therefore, it is necessary to consider treatmentswith the best risk–benefit balance.

    However, because DIRA and DITRA are rarediseases that have only been identified withinthe last decade, available evidence on use of IL-1pathway-modulating agents for their treatmentis scarce, and no secondary research has beenpublished to date. Therefore, it is necessary tosynthesize evidence derived from primarystudies on use of anti-IL-1 drugs for treatment ofDIRA and DITRA, map the published articles,and study the epidemiology of genetic charac-teristics and anti-IL-1 drug efficacy/safety resultsbased on available evidence. Such analysis willhelp identify gaps in knowledge and formulatequestions that can be answered through sys-tematic review.

    A scoping review is a form of scientific syn-thesis that addresses an exploratory researchquestion, aimed at mapping key concepts andidentifying research gaps related to a definedarea or field by systematically searching, select-ing, and synthesizing existing knowledge [11].Scoping reviews contribute to integrating opti-mal research evidence available with clinicalexperience and patient values to improve care,health, and cost outcomes [12].

    Accordingly, in this work, we present theresults of a scoping review on use of anti-IL-1drugs in dermatological diseases whose proto-cols have been previously published [13]. In thisfirst summary, we report and discuss evidenceregarding use of these drugs in patients withDIRA/DITRA.

    METHODS

    A scoping review protocol was a priori pub-lished [13]. The study was conducted andreported using the methodology described in

    the Joanna Briggs Institute Reviewer’s Manual[14] and the PRISMA Extension for ScopingReviews [15]. When necessary, authors of arti-cles were contacted to obtain more data orclarify issues.

    Eligibility Criteria

    To be included in the review, papers had toshow evidence of use of anti-IL-1 drugs (ana-kinra, canakinumab, rilonacept, or AMB1) inpatients with DIRA or DITRA. Studies wereincluded if they were written in English,involved human participants, and described theconditions formulated in the research question,regardless of publication date or format. Articleswere excluded if they did not fit into the con-ceptual framework of the study (i.e., if a case ofDIRA or DITRA was described as not havingbeen treated with anti-IL-1 drugs). Nonscientificreviews and opinion articles were excluded.

    Literature Search

    We performed a three-step literature search toidentify and locate all relevant studies on use ofanti-IL-1 drugs in dermatological diseases, andsubsequently selected articles related to use ofthese drugs in patients with DIRA or DITRA. Thefirst step was performed on 9 March 2018 andentailed a limited search strategy [SEARCHQUERY (‘skin disease’ AND ((‘interleukin 1-beta’/exp OR ‘interleukin 1beta’) OR ‘inter-leukin 1’)) AND ‘therapy’] in MEDLINE andEMBASE databases. Next, we extracted keywordsfrom titles, abstracts, and indexing categoriza-tions and used them to perform a new search on10 March 2018 with a more complex strategy(Table S1 in Supplementary Information).Results were ordered by disease based on reviewof the title and abstract. Subsequently, sourcesrelated to DIRA and DITRA were selected. Thethird step involved a new search using the ref-erence lists of all selected reports and articles foridentification of additional relevant studies. Theliterature search and title and abstract filteringwere carried out independently by tworesearchers (F.G.-G. and J.L.S.-C.).

    Dermatol Ther (Heidelb) (2018) 8:539–556 541

  • Data Charting

    A datacharting form was jointly developed by tworeviewers to determine which variables to extract.A pilot test was carried out with three studies, andthe chosen variables were included in a .csv file.The two reviewers independently charted thedata, discussed the results, and continuouslyupdated the data charting form in an iterativeprocess. Finally, variables related to patients (dis-ease, drug, treatment response, and safety profile)and to the study design and metadata from pri-mary sources were reported (Tables 1, 2, 3, and 4;Tables S1–S4 in Supplementary Files).

    Collating, Summarizing, and ReportingResults

    We grouped the articles by disease type. Theresults of the comprehensive search were pre-sented using a PRISMA flow diagram. A narra-tive and qualitative synthesis of DIRA andDITRA mapping studies and epidemiological,genetics, and efficacy and safety findings wereelaborated using tables and figures.

    Compliance with Ethics Guidelines

    This article is based on previously conductedstudies and does not contain any studies withhuman participants or animals performed byany of the authors.

    Protocol versus Overview

    Our planned search strategy published in Der-matology and Therapy was compared with thefinal reported review methods. Due to time andfunding limitations, we decided to select onlystudies published in English.

    RESULTS

    Search Results

    From 3708 articles regarding use of anti-IL-1-re-lated drugs in dermatological diseases, after

    filtering duplicates and selecting studies accord-ing to title, abstract, and keywords, 77 studiesmet the criteria for full-text review. Of these, 21[DIRA (n = 13) and DITRA (n = 8)] fulfilled theinclusion criteria. After reviewing citations ofreferences for these studies, three new articles[DIRA (n = 2) and DITRA (n = 1)] were obtained.Finally, 24 studies, including 15 describing DIRA(n = 15) and 9 describing DITRA (n = 9), wereincluded in the scoping review. A reference list ofall included and excluded articles with reasonsfor exclusion is presented in Fig. S1 in Supple-mentary Information.

    Evidence for Mapping the Studies of IL-1-Based Treatment in Patients with DIRA/DITRA

    DIRAFifteen studies, published between 2009 and2017 as full papers (n = 11) or congress abstracts(n = 4), followed mainly an observational design(13 case reports, 1 case series), and only one wasan intervention study. Only three studies (20%)had an a priori protocol that was included in apublic registry. Twelve (63.1%) were elaboratedas multicentric studies involving up to nine dif-ferent institutions. The average numbers ofauthors and affiliations per article were 11 (range3–45) and 5 (range 2–14), respectively, and dif-ferent medical specialties were involved [pedi-atrics (n = 11), genetics (n = 11), rheumatology(n = 7), allergy–immunology (n = 6), and der-matology (n = 5)], although authors from aca-demia (n = 4) and the pharmaceutical industry(n = 1) were also included. Most studies wereperformed in the USA [8], with the NationalInstitutes of Health (NIH, Bethesda, MD, USA)and associated centers of institutions participat-ing in more studies (n = 10; Table S1 in Supple-mentary Information). Other countries that alsoparticipated were Brazil (n = 3), Turkey (n = 2),Germany (n = 1), and Puerto Rico (n = 1). Thestudies were published in journals from disci-plines such as rheumatology (n = 5), generalmedicine (n = 4), dermatology (n = 3),immunology (n = 2), and radiology (n = 1).

    In seven (46.7%) and ten (66.7%) studies,disclosures related to the source of funding

    542 Dermatol Ther (Heidelb) (2018) 8:539–556

  • Table1

    Characteristics

    ofindividualpatientsfrom

    DIRA

    studiesincluded

    inthereview

    DIR

    Apatient

    Cou

    ntry

    Age

    Gender

    Clin

    ical

    features

    Mutations

    Ref.

    Gestation

    (weeks)

    Onset

    (days)

    Diagnosis

    (mon

    ths)

    Pustular

    derm

    atitis

    Stom

    atitis

    Localized

    swellin

    gFeverRash

    Other

    skin

    cond

    itions

    Multiple

    bone

    lesion

    s

    Lun

    ginvolvem

    entLiver/

    spleen

    Throm

    bosis

    Other

    clinical

    #1Canada

    35.5

    1513

    M?

    ??

    -MS

    P?

    --

    -1

    Hom

    ozygousfor

    IL1R

    Nc.156_157delCA

    deletion

    [1]

    #2The

    Netherlands

    380

    86F

    ?-

    --

    M?

    ??

    ?-

    -Hom

    ozygousfor

    IL1R

    Nc.229G

    [T

    (p.Glu77Ter)

    mutation

    [1]

    #3The

    Netherlands

    3817

    2F

    ??

    --

    S?

    ??

    ?-

    -Hom

    ozygousfor

    IL1R

    Nc.229G

    [T

    (p.Glu77Ter)

    mutation

    [1]

    #4Lebanon

    385

    20M

    ??

    --

    SP

    ?-

    --

    2Hom

    ozygousfor

    IL1R

    Nc.160C

    [T

    (p.Gln54Ter)

    mutation

    [1]

    #5Lebanon

    382

    4M

    -?

    --

    M?

    ??

    ?–

    2Hom

    ozygousfor

    IL1R

    Nc.160C

    [T

    (p.Gln54Ter)

    mutation

    [1]

    #6Pu

    erto

    Rico

    348

    114

    M-

    -?

    -M

    PG?

    -?

    --

    Hom

    ozygousfor

    175-kb

    deletion

    onchromosom

    e2q13

    a

    [1]

    #7NA

    3310

    1.5

    M?

    --

    -MS

    ??

    ??

    ?-

    Hom

    ozygousfor

    175-kb

    deletion

    onchromosom

    e2q13

    a

    [5]

    #8Brazil

    NA

    030

    F?

    --

    ?S

    P/A

    ?-

    ??

    -Hom

    ozygousfor

    IL1R

    Nc.213_227del

    AGATGTGGT

    ACCCAT

    (p.Asp72_Ile76del)

    [35]

    #9Brazil

    NA

    027

    F-

    --

    ?MS

    ??

    -?

    ?-

    Com

    poun

    dheterozygous

    for

    IL1R

    Nc.229G

    [T

    (p.Glu77Ter)and

    IL1R

    Nc.140delC

    (p.T47TfsX4)

    [35]

    Dermatol Ther (Heidelb) (2018) 8:539–556 543

  • Table1

    continued

    DIR

    Apatient

    Cou

    ntry

    Age

    Gender

    Clin

    ical

    features

    Mutations

    Ref.

    Gestation

    (weeks)

    Onset

    (days)

    Diagnosis

    (mon

    ths)

    Pustular

    derm

    atitis

    Stom

    atitis

    Localized

    swellin

    gFeverRash

    Other

    skin

    cond

    itions

    Multiple

    bone

    lesion

    s

    Lun

    ginvolvem

    entLiver/

    spleen

    Throm

    bosis

    Other

    clinical

    #10

    NA

    NA

    142

    M-

    -?

    ?M

    ??

    -?

    ?-

    Com

    poun

    dheterozygous

    for

    IL1R

    Nc.229G

    [T

    (p.Glu77Ter)

    mutationand

    175-kb

    deletion

    onchromosom

    e2q13

    a

    [36]

    #11

    Puerto

    Rico

    31165

    180

    M?

    --

    ?S

    ??

    -?

    ?-

    Hom

    ozygousfor

    175-kb

    deletion

    onchromosom

    e2q13

    a

    [19]

    #12

    NA

    NA

    301.5

    M-

    -?

    ?M

    ??

    -?

    -?

    NA

    [34]

    #13

    Puerto

    Rico

    3760

    5M

    ?-

    -?

    S?

    ??

    ?-

    3Hom

    ozygousfor

    175-kb

    deletion

    onchromosom

    e2q13

    a

    [29]

    #14

    Germany

    38NA

    24F

    --

    ??

    M?

    ?-

    ?-

    4Hom

    ozygousfor

    IL1R

    Nc.840-6bp

    deletion

    [18]

    #15

    Puerto

    Rico

    NA

    73

    F?

    --

    ?M

    P?

    ??

    -?

    Hom

    ozygousfor

    175-kb

    deletion

    onchromosom

    e2q13

    a

    [30]

    #16

    Turkey

    NA

    365

    144

    F?

    --

    -M

    ??

    ??

    -?

    Hom

    ozygousfor

    IL1R

    Nc.78G[

    A(p.Thr26X)

    mutation

    [33]

    #17

    Turkey

    NA

    084

    M?

    --

    ?S

    ??

    ??

    -?

    Hom

    ozygousfor

    IL1R

    N(c.396delC)

    deletion

    b

    [32]

    #18

    India

    NA

    215

    F-

    -?

    ?M

    ??

    ??

    -?

    Hom

    ozygousfor22.5-

    kbdeletion

    spanning

    firstfour

    exons(twocoding)

    ofIL1R

    Nc

    [24]

    #19

    Brazil

    NA

    120

    84M

    ?-

    -?

    S?

    ??

    ?-

    ?Com

    poun

    dheterozygous

    for

    IL1R

    Np.Ile74_Pro78del

    andp.Gln48Thr

    [31]

    Mmale,Ffemale,Ppathergy,P

    Gpyodermagangrenosum,M

    mild,M

    Smild–severe,Aabscesses

    1:centralnervoussystem

    vasculitis;2:

    conjun

    ctivalinjection;

    3:nonspecific

    inflammationof

    thewholeintestinebutwithout

    granulom

    as;4:

    system

    icinflammatoryresponse

    synd

    rome(SIRS)

    aAdeletion

    ofapproxim

    ately175kb

    onchromosom

    e2q

    thatincludessixgenesfrom

    aclusterof

    interleukin-1-relatedgenes:IL1R

    Nandthegenesencoding

    interleukin-1family,m

    embers9(IL1F

    9),6

    (IL1F

    6),8

    (IL1F

    8),5

    (IL1F

    5),

    and10

    (IL1F

    10)

    bThisfram

    eshiftmutation,

    which

    makes

    thestop

    codonat

    position

    c.534disappear,results

    inanonfun

    ctioning

    protein

    cUnreportedintronicvariantupstream

    totheexon

    9splice-acceptor

    site

    ofun

    know

    nclinicalsignificancein

    theIL1R

    1gene,w

    hich

    couldpotentially

    interferewithtranscript

    splicing

    544 Dermatol Ther (Heidelb) (2018) 8:539–556

  • Table2

    Characteristics

    ofindividualpatientsfrom

    DIRA

    studiesincluded

    inthereview

    (cont.)

    DIR

    Apatient

    Anti-IL-1

    drug

    Initial

    dosage

    Maintenance

    dosage

    Duration

    (days)

    Adjuvant

    corticosteroids

    Reduction

    /withd

    rawal

    ofcorticosteroids

    Initial

    efficacy

    Short-term

    efficacya

    Medium/lon

    g-term

    efficacyb

    Clin

    ical

    efficacy

    Analytical

    efficacy

    Recurrence

    Adverse

    events

    #1Anakinra

    1mg/kg/

    24h

    (1)

    350

    Yes

    Withdrawal

    Yes

    Yes

    Yes

    Yes

    Yes

    Yes

    Aggregate

    data

    #2Anakinra

    1mg/kg/

    24h

    (1)

    1500

    Yes

    Withdrawal

    Yes

    Yes

    Yes

    Yes

    Yes

    Yes

    Aggregate

    data

    #3Anakinra

    1mg/kg/

    24h

    (1)

    40Yes

    Withdrawal

    Yes

    Yes

    NA

    Yes

    Yes

    Yes

    Aggregate

    data

    #4Anakinra

    1mg/kg/

    24h

    (1)

    14Yes

    Withdrawal

    Yes

    Yes

    NA

    Yes

    Yes

    Yes

    Aggregate

    data

    #5Anakinra

    1mg/kg/

    24h

    (1)

    30Yes

    Withdrawal

    Yes

    Yes

    NA

    Yes

    Yes

    Yes

    Aggregate

    data

    #6Anakinra

    1mg/kg/

    24h

    (1)

    100

    Yes

    Reduction

    No

    Yes

    NA

    Yes

    No

    Yes

    Aggregate

    data

    #7Anakinra

    5mg/kg/

    24h

    2.5mg/kg/24h

    180

    No

    NA

    Yes

    Yes

    Yes

    Yes

    Yes

    Yes

    NA

    #8Anakinra

    1mg/kg/

    24h

    2.5mg/kg/24h

    Months

    Yes

    Withdrawal

    Yes

    Yes

    NA

    Yes

    Yes

    Yes

    NA

    #9Anakinra

    1mg/kg/

    24h

    3mg/kg/24h

    Months

    Yes

    Withdrawal

    Yes

    Yes

    Yes

    Yes

    Yes

    Yes

    NA

    #10

    Anakinra

    NA

    NA

    180

    Yes

    Withdrawal

    Yes

    Yes

    Yes

    Yes

    Yes

    NA

    NA

    #11

    Anakinra

    1mg/kg/

    24h

    1mg/kg/24h

    240

    NA

    NA

    Yes

    Yes

    Yes

    Yes

    Yes

    NA

    None

    #12

    Anakinra

    NA

    NA

    NA

    NA

    NA

    Yes

    NA

    NA

    Yes

    Yes

    NA

    None

    #13

    Anakinra

    3mg/kg/

    24h

    3mg/kg/24h

    60Yes

    Withdrawal

    Yes

    Yes

    NA

    Yes

    Yes

    NA

    NA

    #14

    Anakinra

    NA

    NA

    270

    NA

    NA

    Yes

    Yes

    No

    Yes

    Yes

    NA

    NA

    #15

    Anakinra

    NA

    6weeks

    NA

    NA

    NA

    Yes

    Yes

    NA

    Yes

    Yes

    NA

    NA

    #16

    Canakinum

    ab150mgew

    6weeks

    150mg

    ew9

    6weeks

    365

    NA

    NA

    Yes

    Yes

    Yes

    Yes

    Yes

    NA

    None

    #17

    Anakinra

    NA

    NA

    NA

    NA

    NA

    NA

    NA

    NA

    NA

    NA

    NA

    NA

    #18

    Anakinra

    1.5mg/kg/

    24h

    (2)

    365

    Yes

    Reduction

    Yes

    Yes

    Yes

    Yes

    Yes

    NA

    #19

    Canakinum

    ab2mg/kg/

    ew 4weeks

    4mg/kg/

    ew9

    4–6weeks

    NA

    NA

    NA

    noYes

    NA

    Yes

    Yes

    NA

    Generalized

    urticarial

    rash

    Vom

    itingand

    diarrhea

    eweveryweek

    (1)The

    dosage

    was

    increasedby

    0.5mg/kg/day

    atfollow-upvisitsto

    achieveC-reactiveproteinlessthan

    0.5mg/dl

    anderythrocytesedimentation

    rate

    lessthan

    15mm/h

    (2)Reduced

    dosage

    becauseof

    generalized

    urticarialrash

    a\

    12weeks

    b[

    24weeks

    Dermatol Ther (Heidelb) (2018) 8:539–556 545

  • Table3

    Characteristics

    ofindividualpatientsfrom

    DITRA

    studiesincluded

    inthereview

    DIT

    RA

    patient

    Cou

    ntry

    Age

    Gender

    Cutaneous

    presentation

    Cutaneous

    clinical

    evolution

    Fever

    Elevated

    acute-

    phase

    reactants

    Previou

    streatm

    ent

    Mutations

    Ref.

    Gestation

    (weeks)

    Onset

    (days)

    Diagnosis

    (mon

    ths)

    #1Morocco

    4160

    17M

    Multiplepustules

    appeared

    inthe

    perioralanddiaper

    area

    Recurrent

    episodes

    oferythroderma

    ??

    Cyclosporine

    Hom

    ozygousforIL36RN

    c.80T[

    C(p.Leu27Pro)

    mutation

    [1]

    #2NA

    NA

    1080

    38F

    Generalized

    pustular

    lesions

    Generalized

    ?NA

    Antibiotics

    Corticosteroids

    Acitretin

    Cyclosporine

    Com

    poun

    dheterozygous

    forIL36RN

    c.227C

    [T

    (p.Pro76Leu)andc.338C

    [T(p.Ser113L

    eu)mutations

    [1]

    #3NA

    NA

    Infancy

    Adolescent

    FGeneralized

    pustular

    psoriasis

    Generalized

    pustular

    psoriasis

    NA

    ?Corticosteroids

    Acitretin

    Methotrexate

    Cyclosporine

    Adalim

    umab

    Infliximab

    Hom

    ozygousforIL36RN

    c.115?

    6T[

    Cmutation

    [1]

    #4Tun

    isia

    NA

    14years

    3M

    Erythem

    atousand

    scalyeruption

    over

    thescalpand

    perineum

    Generalized

    exfoliative

    derm

    atitis

    No

    ?Corticosteroids

    Acitretin

    Hom

    ozygousforIL36RN

    c.80T[

    C(p.Leu27Pro)

    mutation

    [1]

    #5NA

    NA

    47years

    54years

    MNA

    NA

    NA

    NA

    Acitretin

    Methotrexate

    Cyclosporine

    Infliximab

    HeterozygousforIL36RN

    c.338C

    [T(p.Ser113L

    eu)

    mutation

    [1]

    #6NA

    NA

    NA

    NA

    MGeneralized

    pustular

    lesions

    Generalized

    erythema

    NA

    NA

    Corticoids

    Acitretin

    Cyclosporine

    HeterozygousmutationforIL36RN

    c338C[

    T(pSer113Leu)

    [1]

    #7NA

    NA

    40years

    40years

    MScalyerythemaon

    elbows

    Severe

    flare

    ofGPP

    ??

    Antibiotics

    Corticosteroids

    Methotrexate

    Cyclosporine

    Adalim

    umab

    Com

    poun

    dheterozygous

    forIL36RN

    c.142C

    [T

    (p.Arg48Trp)andIL36RN

    c.338C

    [T(p.Ser113L

    eu)

    mutations

    [5]

    #8Morocco

    3760

    8F

    Initially

    locatedatthe

    diaper

    area

    Generalized

    ??

    Antibiotics

    Corticosteroids

    Acitretin

    Com

    poun

    dheterozygous

    forL36RN

    c.T80C

    (p.Leu27Pro),

    c338C[

    T(p.Ser113L

    eu)andc.142C

    [T(p.Arg48Trp)

    mutations,and

    NSD

    1(5q35.2-q35.3)

    microduplication

    [35]

    546 Dermatol Ther (Heidelb) (2018) 8:539–556

  • (five, public sources; one, public and pharma-ceutical sources; and one without funding) orauthors’ conflicts of interest (CoIs) weredeclared, respectively. AMGEN (five authors),Novartis (two authors), and Lilly (two authors)were the pharmaceutical companies most fre-quently cited in CoIs by the authors.

    DITRANine studies related to use of anti-IL-1 drugs inDITRA were found. All were observational casereport studies. No a priori design or registrationwas reported for any of these studies. Five ofnine (55.5%) were multicenter studies (range1–5). No centers participated in more than onestudy. Two were performed in Spain and France,and one each was performed in The Nether-lands, USA, Italy, Denmark, and Germany.Articles were published between 2011 and 2018.Six papers were published in dermatology jour-nals, two in rheumatology journals, and one ina pediatrics journal. Three were full papers,three were letters, and three were abstracts fromconferences. The average numbers of authorsand affiliations per article were 7.2 (range 4–15)and 3.22 (range 1–7), respectively. The mostfrequent specialties were dermatology in eightpapers and genetics and pediatrics in fivepapers. One study [16] declared funds fromStrasbourg High Throughput Next GenerationSequencing facility (GENOMAX) and INSERMUMR_S 1109. Four did not report funding or didnot provide funding information. In two of thestudies, the authors declared CoIs (Novartis andSobi for three and two authors, respectively;these companies were the most frequentlydeclared in CoIs). Three and four papersdeclared no CoIs or did not provide suchinformation, respectively.

    Evidence for Analysis of Epidemiologyof IL-1-Based Agents in Treatmentof Patients with DIRA/DITRA

    DIRAIndividual data were obtained from 19 patientswho had been treated with anakinra (n = 17)and canakinumab (n = 2). Eight of 19 (42.10%)patients were female. Of these 19 patients, 3

    Table3

    continued

    DIT

    RA

    patient

    Cou

    ntry

    Age

    Gender

    Cutaneous

    presentation

    Cutaneous

    clinical

    evolution

    Fever

    Elevated

    acute-

    phase

    reactants

    Previou

    streatm

    ent

    Mutations

    Ref.

    Gestation

    (weeks)

    Onset

    (days)

    Diagnosis

    (mon

    ths)

    #9Denmark

    3890

    4F

    Generalized

    pustular

    psoriasis

    Generalized

    pustular

    psoriasis

    NA

    Normal

    Antibiotics

    Corticosteroids

    Methotrexate

    Com

    poun

    dheterozygous

    forIL36RN

    c.338C

    [T

    (p.Ser113L

    eu)andNLRP3

    c.2107C[

    A(p.Gln703L

    ys)

    [35]

    Dermatol Ther (Heidelb) (2018) 8:539–556 547

  • Table4

    Characteristics

    ofindividualpatientsfrom

    DITRA

    studiesincluded

    inthereview

    (cont.)

    DIT

    RA

    patient

    Anti-IL-1

    drug

    Initial

    dosage

    Maintenance

    dosage

    Duration

    (days)

    Adjuvant

    corticosteroids

    Reduction

    /withd

    rawal

    Initial

    efficacy

    Short-

    term

    efficacya

    Lon

    g-term

    efficacyb

    Final

    treatm

    ent

    Adverse

    events

    #1Anakinra

    5mg/kg/

    24h

    No

    6No

    NA

    Yes

    No

    NA

    Acitretin/

    etanercept

    NA

    #2Anakinra

    5mg/kg/

    24h

    3mg/kg/24h

    60Yes

    No

    Yes

    No

    NA

    Ustekinum

    abSystem

    icinfection

    #3Anakinra

    No

    3No

    NA

    No

    No

    NA

    Secukinu

    mab

    Renaland

    hepatic

    laboratory

    abnorm

    alities

    Risingwhite

    bloodcell

    coun

    t

    Deteriorating

    clinicalstatus

    with

    progressive

    pustulation

    #4Anakinra

    2–4mg/

    kg/24h

    No

    60No

    NA

    Yes

    Yes

    NA

    Anakinra

    Pain

    atthe

    injectionsite

    without

    erythema

    #5Anakinra

    100mg/

    24h

    NA

    365

    No

    NA

    Yes

    Yes

    Yes

    Anakinra

    NA

    #6Anakinra

    NA

    NA

    NA

    No

    NA

    Yes

    No

    No

    Adalim

    umab/

    methotrexate

    NA

    #7Anakinra

    100mg/

    24h

    NA

    224

    No

    NA

    Yes

    Yes

    Yes

    Anakinra

    NA

    #8Anakinra//canakinum

    ab5mg/kg/

    24h//

    3mg/kg

    every

    8weeks

    NA//NA

    90//NA

    No//no

    NA//NA

    No//

    noNo//no

    No//no

    –NA

    #9Anakinra

    4mg/kg/

    24h

    8mg/kg/24h

    8weeks

    No

    NA

    Yes

    No

    No

    Infliximab

    NA

    a\

    12weeks

    b[

    24weeks

    548 Dermatol Ther (Heidelb) (2018) 8:539–556

  • each were from Brazil and Puerto Rico, 2 eachwere from Turkey, Lebanon, and The Nether-lands; and 1 each was from India, Canada, andGermany. Data from three patients could not beobtained. Seven of 11 (63.63%) patients werefull-term infants, and 4 of 11 (36.36%) werepreterm newborns. Data for eight patients weremissing. Pustular dermatitis and localized swel-ling were observed in 12 and 6 patients, repre-senting the most frequent symptom of onset ofthe disease. During disease evolution, patientspresented with pustular skin rash (severe in 6 of19 cases), multiple bone involvement (ribsbeing the most frequent site, in 17 of 19), fever(in 8 of 16), lung involvement (in 7 of 19),venous thrombosis (in 5 of 19), and elevation ofacute-phase reactants (in 19 of 19). With respectto age at disease presentation, data wereobtained from 18 patients. The median age was14 days (range 0–365 days). Median age at diag-nosis was 24 months (range 1.5–180 months).The median delay in diagnosis was 19.5 months(range 0.5–179.5 months). Seventeen of 18(94.4%) patients had received previous treat-ment. Of these, 13 were treated with corticos-teroids, 12 with antibiotics, 4 with NSAIDs, 3with antifungals, 3 with acitretin, and 1 eachwith methotrexate, cyclosporine, intravenousimmunoglobulins, azathioprine, thalidomide,and etanercept.

    One study [17] presented aggregate datafrom six patients who had been treated withrinolacept. These patients received pretreat-ment with anakinra and were included amongthe 19 previously exposed patients describedabove.

    DITRAIndividual data were obtained from ninepatients. All had been treated with anakinra,and one had also received canakinumab. Threeof eight (37.5%) were female. One patient hadmissing data. Two patients were from Morocco,and one patient each was from Tunisia andDenmark. The origins of the remaining patientswere not reported. Onset disease was localizedin four patients (two for the diaper and scalp,two for the elbow and perineum) and general-ized in four patients. During disease evolution,the disease worsened, presenting with

    erythroderma or pustules in all patients forwhom data were available. The process wasaccompanied by fever in four of six (66.6%)patients and elevation of acute inflammationreactants in five of six (83.3%) patients. Theages at onset and disease diagnosis varied fromneonate to adulthood (14 days to 47 years and3 months to 54 years, respectively). The delay indiagnosis ranged from 2 months to 17 years. Allpatients previously received other treatments,including corticosteroids in seven patients, aci-tretin and ciclosporin in six patients each,methotrexate in four patients, cyclosporine inthree patients, and adalimumab and infliximabin two patients each.

    Evidence of Different GenotypicVariations in Patients with DIRA/DITRATreated with IL-1 Inhibitors

    DIRANine different mutations in IL1RN, showing ahomozygous genotype in all cases, were descri-bed among patients with DIRA treated withanti-IL-1 drugs in the included studies. Agenomic 175-kb deletion on chromosome 2 wasobserved in patients #6, #7, #11, #13, and #15;two nonsense mutations were detected inpatients #2, #3, and #10 (c.229G ? T) andpatients #4 and #5 (c.160C ? T); a 15-bp framedeletion (c. 213_227delAGATGTGGTACCCATresulting in p.Asp72_Ile76del) was observed inpatients #8 and #9; 2-bp (c.156_157delCA) and22-kb1 frameshift deletions were identified inpatients #1 and #18, respectively; and anintronic variant of unknown clinical signifi-cance in the IL1R1 gene (position c.840, 6 bpupstream of the exon 9 splice-acceptor site),which could potentially interfere with tran-script splicing machinery, was found in patient#14. Additionally, the p.R26X IL1RN mutationwas observed in patient #16, c.396delCnucleotide deletion was observed in patient#17, and both p.Ile74_Pro78del and p.Gln48Thr

    1 This frameshift spans four exons (two coding) ofIL1RN, Q54X, and an unreported intronic variant ofunknown clinical significance in the IL1R1 gene. Thisvariant resides at position c.840, 6 bp upstream of theexon 9 splice-acceptor site and could potentially inter-fere with transcript splicing.

    Dermatol Ther (Heidelb) (2018) 8:539–556 549

  • IL1RN mutations were observed in patient #19.No mutation analysis was performed in patient#12.

    DITRAThee different homozygous and heterozygousmutations in IL36RN were described amongpatients with DITRA treated with anti-IL-1drugs in the included studies. IL36RN c.80T[C(p.Leu27Pro) was the most frequent homozy-gous mutation, present in patients #1, #4, and#8. Patient #8 also presented a microduplicationincluding the NSD1 gene (5q35.2-q35.3).Homozygous mutation at c.115 ? 6T[C inpatient #3 was also reported. Patient #6 wasdiagnosed with an homozygous mutation forIL36RN, but the position was not reported.Regarding heterozygous mutations, patients #2,#6, and #8 were identified as carriers of IL36RNc338C[T (pSer113Leu) at exon 5, in patients#2, #6, #8, and #9. Patients #8 and #9 also pre-sented a heterozygous mutation in IL36RNc.142C[T (p.Arg48Trp) and NLRP3c.2107C[A (p.Gln703Lys) at exon 3,respectively.

    Evidence for Efficacy and Safety of IL-1-Based Agents in Treatment of DIRA/DITRA

    DIRAWe obtained individual data for 17 patientstreated with anakinra and 2 patients treatedwith canakinumab. Length of therapy variedbetween 2 weeks and 4.5 years for anakinra andwas up to 12 months for canakinumab. Theinitial dosage of anakinra ranged from 1 to5 mg/kg/day, with 1 mg/kg/day being thedosage most frequently used, in 9 of 13 patients(69.2%) for whom data were available. Thedosage was increased in eight patients up to2.5–3 mg/kg/day or until achieving clinical andanalytical response. Two patients requireddosage reduction, one due to achieving thera-peutic response and the other due to develop-ment of generalized urticaria. In two otherpatients, the initial dosage was maintained. In11 patients treated with anakinra, concomitantuse of corticosteroids was reported; in nine ofthese cases, the drugs were finally withdrawn,

    and in two cases, dosage reduction was per-formed. All patients achieved immediate(day–hours) clinical responses, and all but onepatient also showed an analytical response. Thepatient who did not show complete response toanakinra was homozygous for a deletion ofapproximately 175 kb on chromosome 2q,which harbored six genes from a cluster of IL-1-related genes, i.e., IL1RN and genes encoding IL-1 family members 9 (IL1F9), 6 (IL1F6), 8 (IL1F8),5 (IL1F5), and 10 (IL1F10) [1].

    In the short term (\12 weeks), 15 (88.2%)patients showed good clinical response. In twocases, response was not reported. Ninety per-cent of patients for whom data were available inthe medium/long term ([24 weeks) (n = 10)showed good response. The nonresponder inthis group showed a clinical phenotype ofchronic recurrent multifocal osteomyelitis andfinally responded to azathioprine, corticos-teroids, and intravenous immunoglobulins [18].

    In the two patients treated with canakinu-mab, one showed good immediate, short-term,and medium/long-term response, and the otherrequired dosage increase to achieve goodresponse in the short term. No medium/long-term data were available for this patient.

    With respect to drug safety, anakinra wasassociated with some adverse events, includingtransient injection-site reactions (n = 3) andanaphylactic reactions (n = 2). An episode ofvomiting and diarrhea was reported in a patienttreated with high dosage of canakinumab.Finally, subsequent discontinuation of anakinrain nine patients was reported following a flare-up of their disease.

    Aggregated data from six patients with DIRAtreated with rinolacept were reported in anintervention study with follow-up visits at 3, 12,and 24 months. These patients had previouslyreceived anakinra, and their data were amongthose published individually, corresponding topatients #8, #9, #10, #13, and #15. The sixthpatient corresponded to one of those includedin the article by Aksentijevich et al. (Table S1 ofSupplementary Information). All patients weretreated with an initial bolus of 4.4 mg/kg/doserilonacept and were discharged on 2.2 mg/kg/week. All except one patient required rilonaceptdosage escalation to 4.4 mg/kg/week due to

    550 Dermatol Ther (Heidelb) (2018) 8:539–556

  • partial clinical response. All patients remainedin clinical and analytical remission. Rilonaceptwas well tolerated, no serious adverse eventswere reported, and none of the patients metprotocol adverse event criteria for rilonaceptdosage reduction or permanent discontinua-tion. The most common events were upperrespiratory infection (100%), otitis media(66.7%), and rash (66.7%). Finally, clinicalresponses to rilonacept were comparable tothose observed with anakinra, although therewas a clear preference by relatives and patientsfor staying on weekly versus daily injections[17].

    DITRAEfficacy and safety data were available for ninepatients with DITRA. All patients were treatedwith anakinra at 2–5 mg/kg/day or 100 mg/day,and one patient was also treated with canaki-numab 3 mg/kg every 8 weeks. Duration ofanakinra treatment ranged from 3 days to12 months. With regard to efficacy, 77.8% ofpatients who received anakinra experiencedgood initial (hours–days) clinical response. Ofthese, 33.3% maintained the response in theshort term (\12 weeks). In the medium/longterm ([24 weeks), 22.2% of patients continuedthe treatment. One patient, in whom anakinrahad previously failed, received treatment withcanakinumab, and this treatment did not proveeffective at the initial time or in the short- orlong-term analyses [16].

    With respect to the safety of anakinra, onecase of systemic infection was reported, anotherone of renal and hepatic laboratory abnormali-ties, rising white blood cell count, and deterio-rating clinical status with progressivepustulation and, finally, pain at the injectionsite without erythema. No adverse events werereported in the patient who had been treatedwith canakinumab.

    In five of eight patients in whom anti-IL-1drugs failed, the final therapeutic regimens wereetanercept and acitretin [19], adalimumab andmethotrexate [20], secukinumab [21], ustek-inumab [22], and infliximab [23].

    DISCUSSION

    Summary of Findings

    This is the first scoping review to map andsummarize use of drugs targeting the IL-1pathway in patients with DIRA and DITRA.DIRA and DITRA were first identified in 2009and 2011, respectively, and clinical experiencewith use of anti-IL-1 drugs is scarce. The bestavailable evidence is based on results fromobservational studies, most of which were notpublished in a public repository with an a prioridesign. Studies of both diseases have beenmulticenter, multidisciplinary studies, and thefindings of these studies have generally beenobtained from public sources, with few authorsdeclaring CoIs.

    Anakinra is the most commonly used drugfor both diseases. The use of canakinumab isanecdotal, and rinolacept has only been used inDIRA. Patients with DIRA tended to be youngerat time of onset and start of treatment, and adelay in diagnosis was common for patientswith DITRA. No relationships were observedamong initial features, evolution, or response totreatment or in the type of genetic mutationspresent in patients treated with anti-IL-1 drugs.The effectiveness of these treatments differs inboth diseases, with greater efficacy observed inpatients with DIRA than in patients with DITRAat all time points. Patients with DITRA typicallyshowed good immediate response, butdecreased short- and medium/long-termresponses. No relevant differences in safety havebeen found.

    Strengths and Limitations

    Methodologically, this study was conductedbased on an a priori protocol, previously pub-lished in a scientific journal and using the lateststandards in scoping review methodology. Ineach of the phases, at least two researchers wereinvolved. Contact with authors of some of thestudies allowed us to clarify important pointsfor analyzing the primary data. This report wasmade according to the recommendations of thePRISMA Extension for Scoping Reviews.

    Dermatol Ther (Heidelb) (2018) 8:539–556 551

  • Limitations related to funding and timeprevented us from including some articleswritten in languages other than English. Addi-tionally, it was not possible to contact some ofthe authors of the articles in order to reduce thepercentage of missing data. This was particu-larly limiting for articles published in the formof abstracts, because we did not exclude thesetypes of publication. This work is a substudy,and although we believe that the global searchstrategy was complete and that the develop-ment of the three-phase search minimized lossof relevant articles, it is possible that we havenot included some papers describing studiesrelated to the research topic. The risk of bias inthe studies, the quality of the evidence, andstatistical analysis techniques were not evalu-ated. Finally, this is the first scoping reviewcarried out by this research team; therefore, it ispossible that there may have been some otherunknown limitations.

    Research Gaps

    The low number of studies, low quality of evi-dence based on study design, and lack of ana priori design included in a public repositoryincrease the uncertainty regarding the validityof the results. The studies reported in thisreview were multicenter, multidisciplinarystudies, and these characteristics were moreevident for DIRA than for DITRA, because DIRAexhibits greater systemic involvement and isfundamentally a disease of the bone system.The included studies were performed in differ-ent countries, mostly developed countries, andthis observation was more evident for DITRAthan DIRA. Surprisingly, no center participatedin more than one study in DITRA articles,whereas in articles on DIRA, the NIH, whichincluded various institutions, was involved in10 of 15 studies. Finally, the absence or publicnature of the funding source and the lownumber of author CoIs were notable. This maybe due to the small market for drugs used totreat rare diseases, which can make drugsextremely expensive. Consequently, manypharmaceutical companies may stop manufac-turing these drugs or may not initiate research

    and development into new therapies [25]. Basedon these above findings, primary studies ofhigher methodological quality and with agreater number of patients are necessary, andsecondary scientific investigations should serveas the basis for development of clinical guide-lines. Because DIRA and DITRA are rare diseases,making it difficult to include large numbers ofpatients and find funding, these studies shouldbe multicenter studies, likely with a referencecenter (similar to that observed for DIRA), andimprovement of public and private financialsupport is needed.

    With regard to knowledge on the epidemi-ology and genetics of DIRA and DITRA, becausethe reporting of results has not been system-atized, preparation of a summary of the resultsrelated to use of anti-IL-1 drugs is complex.Accordingly, it would be useful for study sum-maries to provide case reports for reportingprotocols, such as CARE guidelines [26]. Despitethis, it was possible to observe the onset of thedisease and the earlier administration of treat-ments in patients with DIRA versus patientswith DITRA. Both of these patient groupsexhibited delays in diagnosis, probably due tothe characteristics of rare diseases and the needfor appropriate technology for genetic diagno-sis, which may be particularly important indeveloping countries. In all of the presentedcases, the existence and/or the type and posi-tion of the mutation found in IL1RN or IL36RNgenes were reported. Thus, of the 43 [27] and 60[28] homozygous or homozygous andheterozygous mutations that have been descri-bed in DIRA and DITRA, respectively, we foundnine and four differences in patients who hadreceived treatment with anti-IL-1 drugs. Giventhe small number of cases published, it is diffi-cult to find associations between the form ofpresentation or the severity of the disease andthe type of mutation in patients treated withanti-IL-1 drugs.

    With regard to efficacy, we have not foundvalidated instruments or severity criteria toevaluate the degree of improvement in patientswith DIRA or DITRA following treatment. Thismakes it difficult to quantify the response. Todate, treatment efficacy in studies of patientswith DIRA has been measured by assessing

    552 Dermatol Ther (Heidelb) (2018) 8:539–556

  • clinical and analytical improvement. In patientswith DITRA, the reported response is funda-mentally clinical. Based on this limited evi-dence, patients with DIRA showed higherresponses at all measured times and did notexhibit disease recurrence; thus, the dosage ofcorticosteroids can be reduced while receivingtreatment with anti-IL-1 drugs. Only onepatient with DIRA, who also presented withchronic recurrent multifocal osteomyelitis,showed disease recurrence when being admin-istered anakinra [18]. However, patients withDITRA who responded well immediatelyshowed only weak short- and medium/long-term response. Thus, these patients should begiven alternative treatments. In relation to thebest available evidence on use of other biologi-cal drugs in DITRA that we have been able tofind, Boehner et al. recently published a sys-tematic review on generalized pustular psoria-sis, including DITRA patients [38]. Thoseauthors found that anti-TNF (7/8) and anti-IL-12/IL-23(p40) (1/1) drugs also seemed to beeffective in DITRA patients. In our study, in fiveof eight patients in whom anti-IL-1 drugs failed,the final therapeutic regimens were etanerceptand acitretin, adalimumab and methotrexate,secukinumab, ustekinumab, and infliximab.Only one patient with DITRA who had poorresponse to etanercept and experienced relapseafter adalimumab was treated successfully withanakinra [37].

    With respect to safety, data from observa-tional studies are unreliable, and cases of para-doxical generalized pustular psoriasis, andworsening of the disease or severe infectionsafter anti-TNF and anti-interleukin 1 treatmentshave been described in literature. Thus, ourobservations suggest that DITRA patients mayexperience a better response with a similarsafety spectrum with anti-TNF, anti-IL-12/IL-23(p40) or anti-IL-17 drugs as compared withother molecules blocking the IL-1 pathway[39, 40]. With regard to concomitant use ofcorticosteroids, only one case was reported, andworsening of the disease was observed [22].

    The response to canakinumab and rinolaceptwas generally similar to that to anakinra forboth diseases in the reported cases. No differ-ences were observed in the safety of these

    treatments in both diseases. Finally, no rela-tionships between the location of the geneticmutation and the response to treatment wereobserved; For example, genetic alterations werepresent in the one patient [1] with DIRA whodid not respond completely to anakinra treat-ment, but were also present in the other fourpatients (#5, #29, #30, and #31) who didrespond to treatment.

    CONCLUSIONS

    Available evidence on use of anti-IL-1 drugs inpatients with DIRA and DITRA is scarce andbased on observational studies. Anakinra is themost commonly used drug in patients withDIRA or DITRA, and most experience withcanakinumab has been anecdotal. Rinolacepthas only been used in patients with DIRA. Therewas no apparent relationship between muta-tions found in patients treated with anti-IL-1drugs and the onset symptoms, disease evolu-tion, or treatment response. The observed effi-cacy was high in patients with DIRA at all timepoints and at the initial (immediate) time inpatients with DITRA, but was low at short- andmedium/long-term periods in these patients.No differences in safety were found.

    Confidence in these results is limited by thelack of available evidence and the type ofmethodology used in the studies. Systematizingthe collection and reporting of cases, standard-izing scales of severity measurement, and hav-ing greater public/private involvement arenecessary to produce primary studies that canbe used to answer questions regarding the effi-cacy, safety, and association of mutations withresponse to treatments using systematic reviewsand metaanalysis techniques.

    ACKNOWLEDGEMENTS

    We wish to acknowledge the assistance receivedfrom Dr. Gina Montealegre [TranslationalAutoinflammatory Disease Section (TADS),National Institute of Allergy and InfectiousDiseases, NIH/NIAID/LCIM, Bethesda, US] foranswering our questions about some aspects of

    Dermatol Ther (Heidelb) (2018) 8:539–556 553

  • the DIRA patients during the phase of thereview.

    Funding. This work was supported, in part,by project ICI1400136 to JR, integrated into theNational Plan of R ? D ? I 2008–2011 and co-financed by the ISCIII-Subdirección General deEvaluación and European Regional Develop-ment Fund (ERDF), by project PIN-0316-2017 ofthe Consejerı́a de Salud, Junta de Andalucı́a(Spain) to JR, and by grant PP13/009 of PlanPropio de movilidad para investigadores delInstituto Maimonides de Investigacion Biomé-dica de Córdoba (IMIBIC). No funding wasreceived from any pharmaceutical company. Nofunding was received for publication of thisarticle.

    Authorship. All named authors meet theICMJE criteria for authorship for this manu-script, take responsibility for the integrity of thework as a whole, and have given final approvalfor the version to be published. Finally, theauthors would like to thank Editage (www.editage.com) for English language editing.

    Disclosures. Francisco Gómez-Garcı́a hasreceived honoraria for research from Pfizer, andfor lecturing from Abbvie, Janssen-Cilag andNovartis; Antonio Vélez-Garcı́a Nieto hasreceived honoraria for lecturing from Pfizer,Novartis, AbbVie, and Janssen-Cilag, and otherfinancial benefits from AbbVie, Novartis, andJanssen-Cilag; Juan Ruano has received hono-raria for lecturing and grants for research fromPfizer, honoraria for lecturing from Janssen-Ci-lag and Novartis, and other financial benefitsfrom Abbvie and Novartis. Juan Ruano is amember of the Cochrane Bias Methods Groupand Skin Group. Francisco Gómez-Garcı́a is amember of the Cochrane Bias Methods Groupand Skin Group. Beatriz Isla-Tejera is a memberof the Cochrane Bias Methods Group and SkinGroup. Juan L. Sanz-Cabanillas and Isabel Vig-uera-Guerra have nothing to disclose.

    Compliance with Ethics Guidelines. Thisarticle is based on previously conducted studiesand does not contain any studies with human

    participants or animals performed by any of theauthors.

    Data Availability. All data generated oranalyzed during this study are included in thispublished article/as supplementary informationfiles.

    Open Access. This article is distributedunder the terms of the Creative CommonsAttribution-NonCommercial 4.0 InternationalLicense (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommer-cial use, distribution, and reproduction in anymedium, provided you give appropriate creditto the original author(s) and the source, providea link to the Creative Commons license, andindicate if changes were made.

    REFERENCES

    1. Aksentijevich I, Masters SL, Ferguson PJ, Dancey P,Frenkel J, van Royen-Kerkhoff A, et al. An autoin-flammatory disease with deficiency of the inter-leukin-1-receptor antagonist. N Engl J Med.2009;360:2426–37.

    2. Dinarello CA. Biologic basis for interleukin-1 indisease. Blood. 1996;87:2095–147.

    3. Palomo J, Dietrich D, Martin P, Palmer G, Gabay C.The interleukin (IL)-1 cytokine family-balancebetween agonists and antagonists in inflammatorydiseases. Cytokine. 2015;76:25–37.

    4. Kumar S, McDonnell PC, Lehr R, et al. Identifica-tion and initial characterization of four novelmembers of the interleukin-1 family. J Biol Chem.2000;275:10308–14.

    5. Reddy S, Jia S, Geoffrey R, et al. An autoinflamma-tory disease due to homozygous deletion of theIL1RN locus. N Engl J Med. 2009;360:2438–44.

    6. Marrakchi S, Guigue P, Renshaw BR, et al. Inter-leukin-36-receptor antagonist deficiency and gen-eralized pustular psoriasis. N Engl J Med.2011;365:620–8.

    7. Hallegua DS, Weisman MH. Potential therapeuticuses of interleukin 1 receptor antagonists in humandiseases. Ann Rheum Dis. 2002;61:960–7.

    554 Dermatol Ther (Heidelb) (2018) 8:539–556

    http://www.editage.comhttp://www.editage.comhttp://creativecommons.org/licenses/by-nc/4.0/http://creativecommons.org/licenses/by-nc/4.0/

  • 8. Economides AN, Carpenter LR, Rudge JS, et al.Cytokine traps: multi-component, high-affinityblockers of cytokine action. Nat Med. 2003;9:47–52.

    9. Novartis Pharmaceuticals Corporation. Prescribinginformation for ILARIS (canakinumab). http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125319s047lbl.pdf. Accessed on 31 Aug 2018.

    10. Hong DS, Janku F, Naing A, et al. Xilonix, a noveltrue human antibody targeting the inflammatorycytokine interleukin-1 alpha, in non-small cell lungcancer. Investig New Drugs. 2015;33:621–31.

    11. Colquhoun HL, Levac D, O’Brien KK, et al. Scopingreviews: time for clarity in definition, methods, andreporting. J Clin Epidemiol. 2014;67:1291–4.

    12. Al-Almaie SM, Al-Baghli NA. Evidence based medi-cine: an overview. J Fam Community Med.2003;10:17–24.

    13. Gómez-Garcı́a F, Ruano J, Gay-Mimbrera J, et al. Ascoping review protocol to explore the use ofinterleukin-1-targeting drugs for the treatment ofdermatological diseases: indications, mechanism ofaction, efficacy, and safety. Dermatol Ther (Hei-delb). 2018;8:195–202.

    14. Aromataris E, Munn Z (Editors). Joanna BriggsInstitute reviewer’s manual. The Joanna BriggsInstitute, 2017. Available from https://reviewersmanual.joannabriggs.org/. Accessed 18Aug 2018.

    15. Tricco AC, Lillie E, Zarin W, O’Brien KK, et al.PRISMA extension for scoping reviews (PRISMA-ScR): checklist and explanation. Ann Intern Med.2018. https://doi.org/10.7326/m18-0850 (Epubahead of print).

    16. Carapito R, Isidor B, Guerouaz N, et al. Homozy-gous IL36RN mutation and NSD1 duplication in apatient with severe pustular psoriasis and DITRA-unrelated symptoms. Br J Dermatol. 2015;172:302–5.

    17. Garg M, de Jesus AA, Chapelle D, et al. Rilonaceptmaintains long-term inflammatory remission inpatients with deficiency of the IL-1 receptor antag-onist. JCI Insight. 2017. https://doi.org/10.1172/jci.insight.94838.

    18. Zimmer C, Moll M, Rieber N, Goldbach-Mansky R,Aksentijevich I, Kuemmerle-Deschner J. IL-1 inhi-bition in a patient with polymorphism in theinterleukin 1-receptor type 1 gene and clinicalphenotype of CRMO/DIRA. Ann Rheum Dis.2013;71(SUPPL. 3):257.

    19. Cuperus W, Koevoets R, van der Smagt JJ, et al.Juvenile interleukin-36 receptor antagonist

    deficiency (DITRA) with c.80T[C (p.Leu27Pro)mutation successfully treated with etanercept andacitretin. JAAD Case Rep. 2018;4(2):192–5.

    20. Capusan TM, et al. Combined therapy in 2 cases ofpustular generalized psoriasis with IL36RN genemutations. Pediatric Dermatol. 2017;34(Supple-ment 2):S46.

    21. Cordoro KM, Ucmak D, Hitraya-Low M, RosenblumMD, Liao W. Response to interleukin (IL)-17 inhi-bition in an adolescent with severe manifestationsof IL-36 receptor antagonist deficiency (DITRA).JAMA Dermatol. 2017;153:106–8.

    22. Caorsi R, Minoia F, Viglizzo G, et al. The thera-peutic challenge of DITRA syndrome. PediatrRheumatol. 2017;15(Supplement):1.

    23. Glerup M, Veirum J, Iversen L, Christiansen M,Herlin T. Generalized pustular psoriasis in infantwith heterozygous mutation in the IL36RN genesuccessfully treated with infliximab. PediatrRheumatol Online J. 2014;12(Suppl 1):P79.

    24. Mendonca LO, Malle L, Donovan FX, et al. Defi-ciency of interleukin-1 receptor antagonist (DIRA):report of the first Indian patient and a novel dele-tion affecting IL1RN. J Clin Immunol. 2017;37:445–51.

    25. Panju AH, Bell CM. Policy alternatives for treat-ments for rare diseases. CMAJ. 2010;182(17):E787–92.

    26. Gagnier JJ, Kienle G, Altman DG, Moher D, Sox H,Riley D, CARE Group. The CARE guidelines: con-sensus-based clinical case reporting guidelinedevelopment. Glob Adv Health Med. 2013;2:38–43.

    27. https://www.ncbi.nlm.nih.gov/clinvar?term=147679[MIM]. Accessed 12 Sep 2018.

    28. https://www.ncbi.nlm.nih.gov/clinvar?term=605507[MIM]. Accessed 12 Sep 2018.

    29. Minkis K, Aksentijevich I, Goldbach-Mansky R,et al. Interleukin 1 receptor antagonist deficiencypresenting as infantile pustulosis mimickinginfantile pustular psoriasis. Arch Dermatol.2012;148:747–52.

    30. Schnellbacher C, Ciocca G, Menendez R, et al.Deficiency of interleukin-1 receptor antagonistresponsive to anakinra. Pediatr Dermatol.2013;30:758–60.

    31. Mendonı́ ALO, et al. A case report of a novel com-pound heterozygous mutation in a Brazilian patientwith deficiency of IL1RA (DIRA). J Clin Immunol.2017;37(Supplement 1):S19.

    Dermatol Ther (Heidelb) (2018) 8:539–556 555

    http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125319s047lbl.pdfhttp://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125319s047lbl.pdfhttp://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125319s047lbl.pdfhttps://reviewersmanual.joannabriggs.org/https://reviewersmanual.joannabriggs.org/http://dx.doi.org/10.7326/m18-0850http://dx.doi.org/10.1172/jci.insight.94838http://dx.doi.org/10.1172/jci.insight.94838https://www.ncbi.nlm.nih.gov/clinvar%3fterm%3d147679%5bMIM%5dhttps://www.ncbi.nlm.nih.gov/clinvar%3fterm%3d147679%5bMIM%5dhttps://www.ncbi.nlm.nih.gov/clinvar%3fterm%3d605507%5bMIM%5dhttps://www.ncbi.nlm.nih.gov/clinvar%3fterm%3d605507%5bMIM%5d

  • 32. Berdeli A, Sözeri B, Gerceker Türk B, Oz A, Mir S.Turkish DIRA patient with novel IL1RN genemutation. Pediatr Rheumatol. 2015;13(Suppl1):P181.

    33. Ulusoy E, Karaca NE, El-Shanti H, Kilicoglu E, AksuG, Kutukculer N. Interleukin-1 receptor antagonistdeficiency with a novel mutation; late onset andsuccessful treatment with canakinumab: a casereport. J Med Case Rep. 2015;9:145.

    34. Thacker PG, Binkovitz LA, Thomas KB. Deficiencyof interleukin-1-receptor antagonist syndrome: arare auto-inflammatory condition that mimicsmultiple classic radiographic findings. PediatrRadiol. 2012;42:495–8.

    35. Jesus AA, Osman M, Silva CA, et al. A novel muta-tion of IL1RN in the deficiency of interleukin-1receptor antagonist syndrome: description of twounrelated cases from Brazil. Arthritis Rheum.2011;63:4007–17.

    36. Stenerson M, Dufendach K, Aksentijevich I, Brady J,Austin J, Reed AM. The first reported case of

    compound heterozygous IL1RN mutations causingdeficiency of the interleukin-1 receptor antagonist.Arthritis Rheum. 2011;63:4018–22.

    37. Hüffmeier U, Wätzold M, Mohr J, Schön MP,Mössner R. Successful therapy with anakinra in apatient with generalized pustular psoriasis carryingIL36RN mutations. Br J Dermatol. 2014;170:202–4.

    38. Boehner A, Navarini AA, Eyerich K. Generalizedpustular psoriasis—a model disease for specific tar-geted immunotherapy, systematic review. ExpDermatol. 2018;27:1067–77.

    39. Akiyama M, Takeichi T, McGrath JA, Sugiura K.Autoinflammatory keratinization diseases. J AllergyClin Immunol. 2017;140:1545–7.

    40. Akiyama M, Takeichi T, McGrath JA, Sugiura K.Autoinflammatory keratinization diseases: anemerging concept encompassing various inflam-matory keratinization disorders of the skin. J Der-matol Sci. 2018;90:105–11.

    556 Dermatol Ther (Heidelb) (2018) 8:539–556

    Scoping Review on Use of Drugs Targeting Interleukin 1 Pathway in DIRA and DITRAAbstractIntroductionMethodsResultsConclusions

    IntroductionMethodsEligibility CriteriaLiterature SearchData ChartingCollating, Summarizing, and Reporting ResultsCompliance with Ethics GuidelinesProtocol versus Overview

    ResultsSearch ResultsEvidence for Mapping the Studies of IL-1-Based Treatment in Patients with DIRA/DITRADIRADITRA

    Evidence for Analysis of Epidemiology of IL-1-Based Agents in Treatment of Patients with DIRA/DITRADIRADITRA

    Evidence of Different Genotypic Variations in Patients with DIRA/DITRA Treated with IL-1 InhibitorsDIRADITRA

    Evidence for Efficacy and Safety of IL-1-Based Agents in Treatment of DIRA/DITRADIRADITRA

    DiscussionSummary of FindingsStrengths and LimitationsResearch Gaps

    ConclusionsAcknowledgementsReferences