Drugs for CTEPH - studi farmacologici
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Transcript of Drugs for CTEPH - studi farmacologici
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
DRUGS FOR CTEPH
Dr. Marco Morsolini, MDResearch Doctorate in Experimental Surgery and Microsurgery
University of Pavia School of Medicine
Division of Cardiac SurgeryFoundation I.R.C.C.S. “San Matteo” Hospital – Pavia – Italy
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
1. Hypertensive remodeling of the patent arteries
2. Chronic arteriopathy of the obstructed branches
3. Plexiform lesions
4. Development of pathological arterial shunts
5. In situ thrombosis
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
1. Hypertensive remodeling of the patent pulmonary vascular bed (Eisenmenger-like) due to volume and pressure overload
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
“…the development of these hypertensive changes may explain the deterioration which these patients experience preoperatively over time…”
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
1. Hypertensive remodeling of the patent arteries
2. Chronic arteriopathy of the obstructed branches
3. Plexiform lesions
4. Development of pathological arterial shunts
5. In situ thrombosis
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
2. Chronic arteriopathy of the obstructed branches with calcifications and possible retraction of the distal vessels
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
“…thrombotic material can provide the basis elements for the pultaceous core of atherosclerotic plaques, whereas it has not been observed in the hypertensive non-thromboembolic arteries…”
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
1. Hypertensive remodeling of the patent arteries
2. Chronic arteriopathy of the obstructed branches
3. Plexiform lesions
4. Development of pathological arterial shunts
5. In situ thrombosis
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
3. Plexiform lesions stemming from the capillary bed
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
“…patients with plexiform lesions failed to show dramatic hemodynamic improvement despite successful PEA, suggesting that plexiform lesions were probably responsible for persistent pulmonary hypertension…”
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
1. Hypertensive remodeling of the patent arteries
2. Chronic arteriopathy of the obstructed branches
3. Plexiform lesions
4. Development of pathological arterial shunts
5. In situ thrombosis
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
4. Development of pathological systemic-to-pulmonary arterial shunts to overcome the chronic segmental lung hypoperfusion, often causing hemoptysis
• bronchial arteries (orthotopic / heterotopic)
• intercostal arteries
• internal mammary arteries
• frenic arteries
• coronary arteries
PERCUTANEOUSEMBOLIZATION
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Right bronchial artery
Right mammary artery
Before After
Right thoracic artery
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Right intercostal artery
Right frenic artery
Before After
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
1. Hypertensive remodeling of the patent arteries
2. Chronic arteriopathy of the obstructed branches
3. Plexiform lesions
4. Development of pathological arterial shunts
5. In situ thrombosis
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
5. The core of the pathologic process in CTEPH is the imbalance between prothrombotic factors and disturbed thrombus resolution
Moreover, pulmonary hypertension itself is associated with endothelial and platelet dysfunction
CTEPH patients are more likely to develop in situ thrombosis over their thromboembolic lesions
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Such pathophysiological modification of the pulmonary circulation are absolutely not predictable, since CTEPH may develop during indefinite months or years:
• following a single episode of acute PE with incomplete resolution despite medical treatment
• due to chronic relapses of asymptomatic PE
• due to an acute symptomatic PE over chronic relapsing PE
ACCORDING TO THE LENGTH OF THE DISEASE
PATHOPHYSIOLOGY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
EARLY DIAGNOSIS
EARLY TREATMENT
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
• Growing single surgeon’s experience due to learning curve
OPERABILITY ASSESSMENT
Which lesions have to be considered as inoperable?
• Different operability assessments from different Centers
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
JAMIESON CLASSIFICATION
L.M.E.L. - 65 yrs M - Oct 2004 - PEA #119mPAP 39 19 (-51%)CO 4.4 5.4 (+23%)PVR 665 222 (-66%)
G.A.C. - 52 yrs F - Jul 2003 - PEA #96mPAP 48 27 (-44%)CO 2.1 4.2 (+100%)PVR 1638 381 (-77%)
B.A. - 43 yrs F - May 2009 - PEA #233mPAP 49 19 (-61%)CO 3.3 5.0 (+52%)PVR 1067 224 (-79%)
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Exclusively distal lesions
MEDICAL THERAPY !
OPERABILITY ASSESSMENT
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
SURVIVAL OF UNTREATED PATIENTS
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Higher operability rate
PH RECURRENCY AFTER PEA
More Jamieson type III PEAs
MEDICAL THERAPY !
Higher PH recurrence after PEA
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
FOLLOW-UP TIMING AFTER PEA
• discharge
• 3th month
• yearly for 5 years
• 7th, 10th and 15th year
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Pre-operative V/Q scan
Pre-operative right pulmonary angiogram
Pre-operative RHCmPAP 50CI 1.4PVR 1241RVEF 9
PRE-OPERATIVE LONG LASTING DISEASE
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
• A right monolateral PEA was performed
• Impossible to wean off the patient from cardio-pulmonary by-pass due to right ventricle failure
• On ECMO for two days; the sternum was left open for two more days
• Mechanical ventilation 9 days ICU stay 14 days Hospital stay
21 days
First PO RHC controlmPAP 26 (-48%)CI 2.0 (+43%)PVR 410 (-67%)RVEF 25 (+178%)
PRE-OPERATIVE LONG LASTING DISEASE
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
• No CT-scan evidence of new thromboembolic material
• Very long pre-operative NYHA III-IV class period (65 months): probably severe and non-reversible small vessels disease
2 years follow-up RHC
mean Pulmonary Artery Pressure
0
10
20
30
40
50
60
Before PEA Discharge 3 months 1 year 2 years
Cardiac Index
0.0
0.5
1.0
1.5
2.0
2.5
Before PEA Discharge 3 months 1 year 2 years
Pulmonary Vascular Resistances
0
200
400
600
800
1000
1200
1400
Before PEA Discharge 3 months 1 year 2 years
Right Ventricle Ejection Fraction
0
5
10
15
20
25
30
35
Before PEA Discharge 3 months 1 year 2 years
PRE-OPERATIVE LONG LASTING DISEASE
TYPICAL PATIENT WITH
RECURRENT PH AFTER PEA
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
PH MEDICAL THERAPY
Pulmonary hypertension is a rare disease…
…but not an orphan disease at all!
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
PH MEDICAL THERAPY
- BOSENTAN
- AMBRISENTAN- SILDENAFIL
- TADALAFIL
- EPOPROSTENOL
- ILOPROST
- TREPROSTINIL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
CTEPH MEDICAL THERAPY
No drugs are currently approved for CTEPH
Further clinical trials are needed
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Author Drug Study Design Patients WHO Treatment Results
McLaughlin(1999)
Epoprostenol Observational 3 III-IV 8-16 monthsHemodynamic and exercise tolerance improvement
Higenbottam(1998)
EpoprostenolIloprost (i.v.)
Observational 39 II-IV 1-4 yearsSurvival improvement(if SVO2 < 60%)
Olschewski(2002)
Iloprost (inhaled) Controlled 33 III-IV 12 weeks No improvement
Nagaya(2002)
Beraprost (oral) Open 16 II-III 8-12 weeksExercise tolerance improvement
Vizza(2001)
Beraprost (oral) Open 3 II-IV 12 monthsExercise tolerance improvement
CTEPH MEDICAL THERAPYPHASE II STUDIES
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
BENEFiT TRIAL
– PHASE III –
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
STUDY DESIGN
• Phase III, randomized vs. placebo (1:1)
• International multicentre (26 sites in 13 Countries)
• 157 pts (18 – 80 yrs)
• CTEPH - inoperable (exclusively distal lesions)- persistent or recurrent PH after PEA
• WHO functional class II – IV
• 6mWT distance < 450 m
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
BENEFiT TRIAL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
BENEFiT TRIAL
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
BENEFiT TRIAL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
*Analysis excluded patients judged operable by the Operability Evaluation Committee (n=11)
†Analysis excluded patients with missing baseline or post-baseline assessment(s) (n=9 for pulmonary vascular resistance [PVR] analysis; n=6 for 6-min walk distance [6MWD] analysis)
mPAP = mean pulmonary artery pressure mRAP = mean right atrial pressure
NT-proBNP = N-terminal pro-brain natriuretic peptide; PEA = pulmonary endarterectomy; TPR = total pulmonary resistance; WHO = World Health Organization.
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
BENEFiT TRIAL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
BENEFiT TRIAL
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
BENEFiT TRIAL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Jaïs X, D’Armini AM, Jansa P et al. J Am Coll Cardiol 2008 Dec 16;52(25):2127-34
BENEFiT TRIAL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Modified Bruce Test
0
100
200
300
400
500
600
700
800
900
1000
Pre-op 3 mesi 1 anno 3 anni 5 anni 7 anni 10 anni
Follow-up
mete
rs
pp < 0.01 < 0.01
Pre-op 3m 1y 3y 5y 7y 10y
RESULTS AFTER PEA
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
SOME COMMENTS:
• CTEPH patients are generally older than other-PH patients
• We are still far from early diagnosis of CTEPH(75% at diagnosis are in WHO functional class III or IV)
Significant muscolar and psychological deconditioning(19 months of WHO III or IV symptoms before diagnosis)
Short observation time(main phase study only 16 weeks)
• Hemodynamic endpoint satisfied• Functional endpoint not satistied
BENEFiT TRIAL
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
NEW PERSPECTIVES
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
RATIONALERIOCIGUAT Soluble guanylate-cyclase stimulator
Chronic Thromboembolic Pulmonary Hypertension sGC-Stimulator Trial
riociguat
CHEST STUDY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Chronic Thromboembolic Pulmonary Hypertension sGC-Stimulator Trial
• Phase III, double-blind, randomized vs. Placebo (2:1)• International, multicenter (28 Countries)• N = 270 pts (18 – 75 yrs)• Inoperable CTEPH (peripheral localization) or recurrent
PH after PEA• PH pts WHO II-IV• 6 MWD > 150 m and < 450 m• PVR > 300 dyne*sec*cm-5
• mPAP > 25 mmHg riociguat
CHEST STUDY
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UNIVERSITY OF PAVIA SCHOOL OF MEDICINE - “SAN MATTEO” HOSPITAL - PAVIA - ITALY
SPECIFIC DRUGS FOR CHRONIC THROMBOEMBOLIC PULMONARY HYPERTENSION
Chronic Thromboembolic Pulmonary Hypertension sGC-Stimulator Trial
2 weeks
2 weeks
2 weeks
2 weeks
2.0 mg tid
1.5 mg tid
1 mg tid
∑: 16 weeks
V2
V1
V3
V4
V5
V7
V7
V7
V7
V7
0.5 mg tid
1.5 mg tid
1.0 mg tid
2.0 mg tid
2.5 mg tid2.5 mg tid
STUDY DESIGN
CHEST STUDY