MOLECULAR IMAGING TARGETED THERAPIES: Ga68/Lu177...
Transcript of MOLECULAR IMAGING TARGETED THERAPIES: Ga68/Lu177...
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MOLECULAR IMAGING TARGETED THERAPIES:
Ga68/Lu177 PSMA IN PROSTATE CANCER
Dr Nat Lenzo
BMedSci(Hons) MMed EMBA FRACP FAANMS
Acute/General Physician & Nuclear Physician
Clin Assoc Prof in Medicine – University of WA
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Disclosures
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• Founder – Theranostics Australia
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Outline
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• What is PET?
• What is radionuclide therapy?
• What is Theranostics?
• How does this relate to prostate cancer?
• Current trials
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PET
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• Positron
• Emission
• Tomography
• Positron Emitters
– Unstable isotopes, excess +ve charge
– Mostly cyclotron produced
– N-13, C-11, O-15, F-18 (Cu-64, Y-86, etc)
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PET
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• Tag isotope (e.g C-11, F-18) to chemical
(e.g. glucose, amino acid) or use unstable isotope itself (e.g. F-18)
• Inject and image with PET camera
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Perth Cyclotron Installation
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DECEMBER 2002 - SIR CHARLES GAIRDNER HOSPITAL, PERTH
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Perth Cyclotron & Bunker
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JUNE 2003
SIR CHARLES GAIRDNER HOSPITAL, PERTH
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The WA Cyclotron
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Perth Radiopharmaceutical Lab
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Hot-Cells in Clean Room: Perth
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Perth Equipment Selection: Radiopharmaceutical
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For Production
– Two hot-cells
– One IBA 18F-FDG synthesis module
– One GE 18F-FDG synthesis module
– One robot dose dispenser
These located within GMP environment
For R&D
– Four hot-cells
– One development 18F-FCh synthesis module
– One development 18F-FMISO/FLT synthesis module
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QC Equipment; FDG Product Validation
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• Gamma Spectrometer
• Thin Layer Chromatography
• High Pressure Liquid Chromatography
• Double distilled water plant for HPLC
• Dose Calibrators
• Gas chromatograph (not needed for FDG)
• All QC equipment is contained in a QC Room
situated within the GMP Clean Room environment.
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PET/Cyclotron
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PET
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• Positron
• Emission
• Tomography
Positron Emitters
– = “positive electron”
– decay---> annihilation photons
– 2 x 511 keV photons
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PET
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FDG PET
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Mesothelioma - Coronal Reconstruction
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PET
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History
– E. Lawrence 1929 Berkeley
• produced first cyclotron
– PET theory 1950’s
– Positron tomography 1953 MGH
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Limitations of Anatomic Imaging
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• Benign or Malignant ??
• Assess whole body
• Residual post-Rx mass- Scar or Tumor??
• Assess/predict response to therapy
Lymphoma – Residual Mass
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Limitations of Anatomic Imaging
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Dx: Fibrotic scar - no evidence of residual lymphoma
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Increased Sensitivity of PET
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Prostate ca -Tc-99m MDP Bone Scan Prostate ca - [F-18] PET Bone Scan
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Positron Emission Tomography
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Radionuclide Therapy
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• Administer radioisotope for treatment – usually cancer
– E.g. Iodine-131 for thyroid cancer (and overactive thyroid diseases)
• Benefits
– Higher radiation dose deposited directly to target tissue (10-100x greater than external
beam)
– Decreased toxicity to adjacent tissue – short pathway
– Selective targeting possible – e.g. anti-CD20, SSTR
– Dosimetry possible
– Can combine with chemotherapy or potentially other radionuclides
– Various isotopes, energy and method of administration
– “Cross-fire” and “Bystander” effects
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Radionuclide Therapy
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Cross-fire Effect:
– Penetrating radiation minimises the
problem of limited access in bulky or
poorly vascularized tumours
Bystander Effect:
– Apoptotic cells have a damaging effect
on adjacent cells
– Possibly from cytokine release or loss
of homeostatic supportive mechanisms
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Theranostics
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Theranostics
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• First used by PharmaNetics president and CEO John Funkhouser
– Developing diagnostic tests directly linked to the application of a specific
therapies.
– PharmaNetics - point of care coagulation tests supporting coagulation therapies
• September 25, 1998 - key day
– FDA granted simultaneous approval for Genentech’s Herceptin® for the treatment
of Stage IV breast cancer and Dako’s HercepTest® for diagnosis of Her2
overexpression
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Theranostics in Nuclear Medicine
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• Not a new paradigm
• Dr S Seidlin (1895-1955) Montefiore Hospital New York City 1943
– Radioactive iodine (I-131) for metastatic thyroid cancer
• Tracer dose followed by therapeutic dose
– Low dose I-131 or I-123 still used
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Thyroid Cancer
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Gallium-68 PET Radiotracers
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Germanium: Gallium-68 Generators
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PERSONALISED MEDICINE, THERANOSTICS
& RADIOPEPTIDE THERAPY (RPT)
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Gallium-68 Products
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• Gallium Citrate
• Gallium MAA
• Gallium DTPA
• Gallium Octreotate
• Gallium PSMA
• Gallium Pentixafor
• Gallium Herceptin
• Gallium Exendin
• Gallium Satareotide
• Etc.
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The Target
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SSTR1-5:
A G-coupled 7 Transmembrane
receptor
Sheridan et al. Integrative and
Comparative Biology 2000;
40(2):269-86
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Ga-68/Lu-177 octreotate
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Targeted Radionuclide Therapy:
Ga-68 octreotate PET-CT
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Primary NET lesion Secondary liver mets
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Targeted Radionuclide Therapy
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13 JAN 2010 3 FEB 2010
68Ga OCTREOTATE 177Lu OCTREOTATE
Courtesy: Prof Harvey Turner
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The times they are a changin’! …..
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• Pre-2014 in Australia:
– Rising PSA post definitive therapy for prostate cancer
• CT and bone scan (+/- pelvic MRI)
– High risk primary prostate cancer
• CT, bone scan (if PSA >10) (+/- pelvic MRI)
– Choline available at some sites – considered “useful”
• 2011: Eur J Nucl Med Mol Imaging. 2011 Jan;38(1):14-22.
– Rising PSA - Choline as good and possibly mildly better than CT + bone scan
• 2009/2010:
– First publications of Ga-68 PSMA in prostate cancer
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Ga-68 PSMA
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• July 2014:
– “A date which will live in infamy….”
• Wesley Hospital Brisbane performed
their first clinical Ga-68 PSMA PET CT
for prostate cancer in Australia (16th
July 2014)
• Peter MacCallum also performed their
first clinical Ga-68 PSMA PET CT in
July 2014
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Perth Ga-68 PSMA
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• 24th May 2015:
– Oceanic Molecular PET CT Centre at Ramsay Hollywood Hospital performed
– 1st Ga-68 PSMA PET CT in WA
– 4th site in Australia to offer this form of PET imaging for prostate cancer
• 4th May 2018:
– Oceanic Molecular has performed approx. 800 Ga-68 PSMA PET CT studies
– 5 sites in Perth offering Ga-68 PSMA PET CT – 20-25 studies/week in Perth
– Now: >40 sites in Australia offering Ga-68 PSMA PET CT
– Fastest growing imaging test in Australia; no Medicare funding
– Some sites doing 20+ scans per week; $600-$1200 per scan
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Why the explosion?
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• Prostate Cancer
– Approx. 20 000 cases diagnosed annually in Australia
– Most common cancer diagnosis in Australia (more than breast,
lung and melanoma)
– 1/3 will show biochemical relapse (PSA) within 10 years
– More men die per year from prostate cancer (>3000) in
Australia than women die from breast cancer
– No major advance in therapeutic options in last 20 yrs
• Surgery/brachytherapy/radiotherapy
• ADT/pelvic irradiation
• 2nd line ADT/Docetaxol/2nd line chemo
• Radium (palliation)
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Prostate cancer imaging with PSMA-ligands
47
• PSMA: prostate-specific membrane antigen
• Cell surface protein with overexpression in prostate cancer
• Transmembraneous localization including large extracellular part
• Promising target for prostate cancer specific imaging and
therapy
• Recently: development of various PSMA-ligands for PET imaging
• e.g. 68Ga-PSMA: Glu-NH-CO-NH-Lys-(Ahx)-[68Ga(HBED-CC)]
(only for 68Ga) and PSMA I&T (TUM/Scintomics), suitatble for M3+
labeling (68,67Ga, 177Lu, 90Y, 111In…)
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[68Ga]PSMA-Ligand PET
48
Afshar-Oromieh A, EJNMMI 2012; EJNMMI 2013
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Example: local recurrence81y patient, s/p prostatecomy (18 years ago), PSA-value 5.5 ng/ml
49
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Mr BN83y patient, s/p prostatecomy, PSA-value 11 ng/ml. F-choline Jan 2015
50
Ga-PSMA
F-choline
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Mr BN
51
Ga-PSMA
F-choline
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Mr BN
52
Ga-PSMA
F-choline
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Ga-PSMA vs F-choline
53
• 38 patients. 34 (89%) radical prostatectomy and 4 (11%) had undergone radiation treatment. Twelve (32%) had undergone salvage radiation treatment
after primary radical prostatectomy.
• Mean PSA level was 1.74 ± 2.54 ng/mL.
• Scan results were positive in 26 patients (68%) and negative with both tracers in 12 patients (32%).
• Of 26 positive scans, 14 (54%) positive with 68Ga-PSMA alone, 11 (42%) with both 18F-fluoromethylcholine and 68Ga-PSMA, and only 1 (4%) with
18F-fluoromethylcholine alone.
• PSA below 0.5 ng/mL, detection rate 50% for 68Ga-PSMA versus 12.5% for 18F-fluoromethylcholine.
• PSA 0.5–2.0 ng/mL, detection rate 69% for 68Ga-PSMA versus 31% for 18F-fluoromethylcholine,
• PSA above 2.0, the detection rate was 86% for 68Ga-PSMA versus 57% for 18F-fluoromethylcholine.
• On lesion-based analysis, 68Ga-PSMA detected more lesions than 18F-fluoromethylcholine (59 vs. 29, P < 0.001).
• 63% (24/38 patients) management impact, with 54% (13/24 patients) being due to 68Ga-PSMA imaging alone.
• Histologic follow-up available for 9 of 38 patients (24%), and 9 of 9 68Ga-PSMA–positive lesions were consistent with prostate cancer (68Ga-PSMA was
true-positive). The lesion positive on 18F-fluoromethylcholine imaging and negative on 68Ga-PSMA imaging was shown at biopsy to be a false-positive
18F-fluoromethylcholine finding (68Ga-PSMA was true-negative).
• Conclusion: In patients with biochemical failure and a low PSA level, 68Ga-PSMA demonstrated a significantly
higher detection rate than 18F-fluoromethylcholine and a high overall impact on management.
Morigi et al J Nucl Med August 1, 2015 vol. 56 no. 8 1185-1190
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Ga-68 PSMA PET CT
54
• 2 major indications:
– Traditional - Rising PSA following definitive therapy for prostate cancer
– More recent - Staging of primary prostate cancer
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[68Ga]PSMA-Ligand PET in recurrent
prostate cancer
55
Detection rate with [68Ga]PSMA-Ligand:
73 patients; PSA: median 3.04 ng/ml
(range 0.2 – 1000 ng /ml)
Mixed PET/CT and PET/MR imaging
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Comparison of 68Ga-PSMA PET/CT and PET/MR
Courtesy: Eiber M (NuklMed) and T.Maurer (Urology) at Technische Universität München
56
• No statistical significant difference in detection rate between PET/CT and PET/MR
• Diagnostic efficacy mainly driven by uptake in PET (Ø morphol. imag.)
• In PSA<1 ng/ml: increase in definite lesion detection from 28.6% to 48.2%
14/22
66/6827/29 14/159/10
16/27suspicous
highly suggestive
PET/CT PET/MR
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[68Ga]PSMA-Ligand PET in recurrent prostate cancerAsokendaran, Henderson, Meyrick, Wester, Lenzo. ANZSNM 2016
57
Detection rate with [68Ga]PSMA-Ligand:
– 102 pts; Age range 45-84 years.
PSA range 0.04-100 ng/ml,
67/102 positive scans
– 15/67 (22%) recurrence confined
to prostatic bed; lowest positive
scan 0.17 ng/ml
25
67
92
5
41
63
0
10
20
30
40
50
60
70
80
90
100
<0.5 0.5-1.5 >1.5
PSA Level (ug/L)
Detection Rates According to PSA Levels (%)
P= 0.0017
P= 0.056
P<0.0001
Gallium PSMA PET Diagnostic CT
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PMSA-ligand imaging for radioguided surgery
59
Collaboration: Eiber M , Schwaiger M (Nukl.Med), T.Maurer, J Gschwend (Urology) and Weineisen M, Schottelius M, Wester HJ,
Pharmaceutical Radiochemistry, Technische Universität München
75y patient, radical prostatecomy (2010), pT2c pN0 cM0, PSA: 0.46 ng/ml (03/14)
68Ga-PSMA-HBED PET/MR: single PET-positive lymph node metastasis
Individual therapy decision: Secondary radioguided lymphadenctomy
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Radioguided Surgery PET Probe
60
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Collaboration: Eiber M , Schwaiger M (Dept. Nucl.Med), T.Maurer, J Gschwend (Urology) and
Weineisen M, Schottelius M, Wester HJ (Pharmaceutical Radiochemistry) Technische Universität München
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Collaboration: Eiber M , Schwaiger M (Dept.
Nucl.Med), T.Maurer, J Gschwend (Urology) and
Weineisen M, Schottelius M, Wester HJ,
(Pharmaceutical Radiochemistry), Technische
Universität München
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PSMA-IHC ( in 8mm Lymphnote)
63
Collaboration: Eiber M , Schwaiger M (Nukl.Med), T.Maurer, J Gschwend (Urology) and
Weineisen M, Schottelius M, Wester HJ, Pharmaceutical Radiochemistry, Technische Universität München
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Ga-68 PSMA PET CT
64
• Rising PSA following definitive therapy for prostate cancer and negative CT +/-
bone scan:
– Data similar to European counterparts with I&T PSMA compound
• Very high sensitivity if PSA >1.5 (~90%)
• Limited value if PSA <0.5 (~25%) and likely no value if PSA <0.2
• 1/5th had recurrence in prostate bed; mostly pelvic or abdominal nodes
• Often nodal disease just out of field of treatment from pelvic
radiotherapy
• FSH/SCGH – HBED vs I&T compound – HBED better signal to noise for small
volume disease? Clinically significant
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Ga-68 PSMA PET CT in Primary Staging
65
• Results:
– PSMA-avid disease outside of the prostate gland (distant) detected:
• Gleason 7 or below: 18.2% (4/22)
• Gleason 8: 31.6% (6/19 - all PSA 10 or more)
• Gleason 9 and above: 47.8% (11/23)
• PSA less than 5: 9% (1 /11)
• PSA 5-10: 25% (6/24)
• PSA less than 10: 20% (7/35);
• PSA over 10: 45.7% (16 /35)
– 11 patients had both a PSA over 10 and Gleason 9 or more:
• 7 of these (63.6%) had distant PSMA-avid disease. Of these 7 positive subjects: 5 to lymph
nodes, 1 to skeleton and 1 to skeleton + lymph nodes.
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Mr B
66
• 70 yo man with Gleason 9 prostate cancer. PSA 24. Preop inx.
• CT pelvis – localised disease. Bone scan ? Fracture 9th rib
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Mr B
67
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Mr B
68
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Mr B
69
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Ga-68 PSMA PET CT in Primary Staging
70
Conclusions:
• 68Ga-PSMA PET CT appears to have the potential for improving staging of primary
prostate cancer.
• In high risk patients (Gleason 9+ and PSA>10) PSMA avid disease was found distant to the
prostate in 64% of this group. This may have significant impact in patient management.
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Ga-68 PSMA PET CT in Primary Staging
71
• Further work:
– 68Ga-PSMA PET CT in primary
staging – change of management
study (PRO-PSMA TRIAL)
– Radiotherapy planning in primary
prostate cancer study
– 68Ga-PSMA PET CT fused with MRI
for on table MRI guided targeted
biopsy
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Ga-68 PSMA PET CT in Primary Staging
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Ga-68 PSMA PET in DXRT Planning
73
ORIGINAL ARTICLE
68Ga-PSMA-11 PET/CT: a new techniquewith high potentialfor theradiotherapeutic management of prostatecancer patients
Florian Sterzing1,2,4&ClemensKratochwil3&Hannah Fiedler 3
&Sonja Katayama1,4&
Gregor Habl5&KlausKopka6&Ali Afshar-Oromieh3
&Jürgen Debus1,2,4&
UweHaberkorn3,7&Frederik L. Giesel3,7
Received: 20 June2015 /Accepted: 1 September 2015# Springer-Verlag Berlin Heidelberg 2015
Abstract
Purpose Radiotherapy is the main therapeutic approach be-
sidessurgery of localizedprostatecancer. It relieson risk strat-
ification andexact staging. Thisreport analysesthepotential of
[68Ga]Glu-urea-Lys(Ahx)-HBED-CC (68Ga-PSMA-11), anew
positron emission tomography (PET) tracer targeting prostate-
specificmembraneantigen (PSMA) for prostatecancer staging
and individualized radiotherapy planning.
Methods A cohort of 57 patients with prostate cancer scanned
with68Ga-PSMA-11PET/CT for radiotherapy planningwasret-
rospectively reviewed; 15 patients wereat initial diagnosis and
42 patientsat timeof biochemical recurrence. Staging resultsof
conventional imaging, including bonescintigraphy, CT or MRI,
werecomparedwith68Ga-PSMA ligandPET/CT resultsand the
influenceon radiotherapeutic management wasquantified.
Results 68Ga-PSMA ligandPET/CThadadramaticimpact on
radiotherapy application in thepresented cohort. In50.8%of
thecasestherapy waschanged.
Conclusion Thepresented imaging techniqueof 68Ga-PSMA
PET/CT could bea key technology for individualized radio-
therapy management in prostatecancer.
Keywords Prostatecancer .68Ga-PSMA ligandPET/CT .
Radiotherapyplanning . Individualizedradiotherapy
Introduction
Radiotherapy playsan essential role in thecurativetreatment
of prostatecancer. Whilemoderatedosesof radiotherapy with
conventional techniquesseem to result in slightly inferior re-
sultscompared to radical surgery, modern technology hasthe
potential to overcomethis limitation [1].
New strategies in the management of localized prostate
cancer incorporatemoreand moreindividualized approaches
based on innovative imaging to enable dose-escalated treat-
ment. Individualized approaches already start at the point of
diagnostic workup, where multiparametric prostate MRI has
shown the possibilities of identifying special regions at risk
and guiding biopsy. A recent investigation presented high de-
tection rates even when previous biopsieshad been negative
[2]. Overall such atargeted diagnostic procedureresulted in a
higher percentage of cancer detection compared to classical
serial biopsy [3]. Generally MRI-guided biopsies are most
useful for improving the diagnosis of clinically significant
prostatecancersandreducingthediagnosisof clinically insig-
nificant cancers. Thus, overall thereisusually only aminimal
overall increasein all prostatecancer detection.
The importance of exact imaging and staging of course
continues in the therapeutic decision-making to tailor the
* Florian Sterzing
* Frederik L. Giesel
1 Department of Radiation Oncology, University Hospital Heidelberg,
Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
2 Clinical Cooperation Unit Radiation Oncology, German Cancer
Research Center (DKFZ), Heidelberg, Germany
3 Department of Nuclear Medicine, University Hospital Heidelberg,
Heidelberg, Germany
4 Heidelberg Instituteof Radiation Oncology, Heidelberg, Germany
5 Department of Radiation Oncology, Technical University Munich,
Munich, Germany
6 Department of Radiopharmaceutical Chemistry, German Cancer
Research Center (DKFZ), Heidelberg, Germany
7 Clinical Cooperation Unit Nuclear Medicine, German Cancer
Research Center (DKFZ), Heidelberg, Germany
Eur JNucl Med Mol Imaging
DOI 10.1007/s00259-015-3188-1
ORIGINAL ARTICLE
68Ga-PSMA-11 PET/CT: a new techniquewith high potentialfor theradiotherapeutic management of prostatecancer patients
Florian Sterzing1,2,4&ClemensKratochwil3&Hannah Fiedler 3
&Sonja Katayama1,4&
Gregor Habl5&KlausKopka6&Ali Afshar-Oromieh3
&Jürgen Debus1,2,4&
UweHaberkorn3,7&Frederik L. Giesel3,7
Received: 20 June2015 /Accepted: 1 September 2015# Springer-Verlag Berlin Heidelberg 2015
Abstract
Purpose Radiotherapy is the main therapeutic approach be-
sidessurgery of localizedprostatecancer. It relieson risk strat-
ification andexact staging. Thisreport analysesthepotential of
[68Ga]Glu-urea-Lys(Ahx)-HBED-CC (68Ga-PSMA-11), anew
positron emission tomography (PET) tracer targeting prostate-
specificmembraneantigen (PSMA) for prostatecancer staging
and individualized radiotherapy planning.
Methods A cohort of 57 patients with prostate cancer scanned
with68Ga-PSMA-11PET/CT for radiotherapy planningwasret-
rospectively reviewed; 15 patients were at initial diagnosis and
42 patientsat timeof biochemical recurrence. Staging resultsof
conventional imaging, including bonescintigraphy, CTor MRI,
werecomparedwith68Ga-PSMA ligandPET/CT resultsandthe
influenceon radiotherapeutic management wasquantified.
Results 68Ga-PSMA ligandPET/CThadadramaticimpact on
radiotherapy application in thepresented cohort. In50.8%of
thecasestherapy waschanged.
Conclusion Thepresented imaging techniqueof 68Ga-PSMA
PET/CT could be a key technology for individualized radio-
therapy management in prostatecancer.
Keywords Prostatecancer .68Ga-PSMA ligandPET/CT .
Radiotherapy planning . Individualizedradiotherapy
Introduction
Radiotherapy playsan essential role in thecurativetreatment
of prostatecancer. Whilemoderatedosesof radiotherapy with
conventional techniquesseem to result in slightly inferior re-
sultscompared to radical surgery, modern technology hasthe
potential to overcomethis limitation [1].
New strategies in the management of localized prostate
cancer incorporatemoreand more individualized approaches
based on innovative imaging to enable dose-escalated treat-
ment. Individualized approaches already start at the point of
diagnostic workup, where multiparametric prostate MRI has
shown the possibilities of identifying special regions at risk
and guiding biopsy. A recent investigation presented high de-
tection rates even when previous biopsieshad been negative
[2]. Overall such atargeted diagnostic procedureresulted in a
higher percentage of cancer detection compared to classical
serial biopsy [3]. Generally MRI-guided biopsies are most
useful for improving the diagnosis of clinically significant
prostatecancersandreducingthediagnosisof clinically insig-
nificant cancers. Thus, overall thereisusually only aminimal
overall increasein all prostatecancer detection.
The importance of exact imaging and staging of course
continues in the therapeutic decision-making to tailor the
* Florian Sterzing
* Frederik L. Giesel
1 Department of Radiation Oncology, University Hospital Heidelberg,
Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
2 Clinical Cooperation Unit Radiation Oncology, German Cancer
Research Center (DKFZ), Heidelberg, Germany
3 Department of Nuclear Medicine, University Hospital Heidelberg,
Heidelberg, Germany
4 Heidelberg Instituteof Radiation Oncology, Heidelberg, Germany
5 Department of Radiation Oncology, Technical University Munich,
Munich, Germany
6 Department of Radiopharmaceutical Chemistry, German Cancer
Research Center (DKFZ), Heidelberg, Germany
7 Clinical Cooperation Unit Nuclear Medicine, German Cancer
Research Center (DKFZ), Heidelberg, Germany
Eur JNucl Med Mol Imaging
DOI 10.1007/s00259-015-3188-1
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Ga-68 PSMA PET in DXRT Planning
74
ORIGINAL ARTICLE
68Ga-PSMA-11 PET/CT: a new techniquewith high potentialfor theradiotherapeutic management of prostatecancer patients
Florian Sterzing1,2,4&ClemensKratochwil3&Hannah Fiedler 3
&Sonja Katayama1,4&
Gregor Habl5&KlausKopka6&Ali Afshar-Oromieh3
&Jürgen Debus1,2,4&
UweHaberkorn3,7&Frederik L. Giesel3,7
Received: 20 June2015 /Accepted: 1 September 2015# Springer-Verlag Berlin Heidelberg 2015
Abstract
Purpose Radiotherapy is the main therapeutic approach be-
sidessurgery of localizedprostatecancer. It relieson risk strat-
ification andexact staging. Thisreport analysesthepotential of
[68Ga]Glu-urea-Lys(Ahx)-HBED-CC (68Ga-PSMA-11), anew
positron emission tomography (PET) tracer targeting prostate-
specificmembraneantigen (PSMA) for prostatecancer staging
and individualized radiotherapy planning.
Methods A cohort of 57 patients with prostate cancer scanned
with68Ga-PSMA-11PET/CT for radiotherapy planningwasret-
rospectively reviewed; 15 patients wereat initial diagnosis and
42 patientsat timeof biochemical recurrence. Staging resultsof
conventional imaging, including bonescintigraphy, CT or MRI,
werecomparedwith68Ga-PSMA ligandPET/CT resultsand the
influenceon radiotherapeutic management wasquantified.
Results 68Ga-PSMA ligandPET/CThadadramaticimpact on
radiotherapy application in thepresented cohort. In50.8%of
thecasestherapy waschanged.
Conclusion Thepresented imaging techniqueof 68Ga-PSMA
PET/CT could bea key technology for individualized radio-
therapy management in prostatecancer.
Keywords Prostatecancer .68Ga-PSMA ligandPET/CT .
Radiotherapyplanning . Individualizedradiotherapy
Introduction
Radiotherapy playsan essential role in thecurativetreatment
of prostatecancer. Whilemoderatedosesof radiotherapy with
conventional techniquesseem to result in slightly inferior re-
sultscompared to radical surgery, modern technology hasthe
potential to overcomethis limitation [1].
New strategies in the management of localized prostate
cancer incorporatemoreand moreindividualized approaches
based on innovative imaging to enable dose-escalated treat-
ment. Individualized approaches already start at the point of
diagnostic workup, where multiparametric prostate MRI has
shown the possibilities of identifying special regions at risk
and guiding biopsy. A recent investigation presented high de-
tection rates even when previous biopsieshad been negative
[2]. Overall such atargeted diagnostic procedureresulted in a
higher percentage of cancer detection compared to classical
serial biopsy [3]. Generally MRI-guided biopsies are most
useful for improving the diagnosis of clinically significant
prostatecancersandreducingthediagnosisof clinically insig-
nificant cancers. Thus, overall thereisusually only aminimal
overall increasein all prostatecancer detection.
The importance of exact imaging and staging of course
continues in the therapeutic decision-making to tailor the
* Florian Sterzing
* Frederik L. Giesel
1 Department of Radiation Oncology, University Hospital Heidelberg,
Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
2 Clinical Cooperation Unit Radiation Oncology, German Cancer
Research Center (DKFZ), Heidelberg, Germany
3 Department of Nuclear Medicine, University Hospital Heidelberg,
Heidelberg, Germany
4 Heidelberg Instituteof Radiation Oncology, Heidelberg, Germany
5 Department of Radiation Oncology, Technical University Munich,
Munich, Germany
6 Department of Radiopharmaceutical Chemistry, German Cancer
Research Center (DKFZ), Heidelberg, Germany
7 Clinical Cooperation Unit Nuclear Medicine, German Cancer
Research Center (DKFZ), Heidelberg, Germany
Eur JNucl Med Mol Imaging
DOI 10.1007/s00259-015-3188-1
ORIGINAL ARTICLE
68Ga-PSMA-11 PET/CT: a new techniquewith high potentialfor theradiotherapeutic management of prostatecancer patients
Florian Sterzing1,2,4&ClemensKratochwil3&Hannah Fiedler 3
&Sonja Katayama1,4&
Gregor Habl5&KlausKopka6&Ali Afshar-Oromieh3
&Jürgen Debus1,2,4&
UweHaberkorn3,7&Frederik L. Giesel3,7
Received: 20 June2015 /Accepted: 1 September 2015# Springer-Verlag Berlin Heidelberg 2015
Abstract
Purpose Radiotherapy is the main therapeutic approach be-
sidessurgery of localizedprostatecancer. It relieson risk strat-
ification andexact staging. Thisreport analysesthepotential of
[68Ga]Glu-urea-Lys(Ahx)-HBED-CC (68Ga-PSMA-11), anew
positron emission tomography (PET) tracer targeting prostate-
specificmembraneantigen (PSMA) for prostatecancer staging
and individualized radiotherapy planning.
Methods A cohort of 57 patients with prostate cancer scanned
with68Ga-PSMA-11PET/CT for radiotherapy planningwasret-
rospectively reviewed; 15 patients were at initial diagnosis and
42 patientsat timeof biochemical recurrence. Staging resultsof
conventional imaging, including bonescintigraphy, CTor MRI,
werecomparedwith68Ga-PSMA ligandPET/CT resultsandthe
influenceon radiotherapeutic management wasquantified.
Results 68Ga-PSMA ligandPET/CThadadramaticimpact on
radiotherapy application in thepresented cohort. In50.8%of
thecasestherapy waschanged.
Conclusion Thepresented imaging techniqueof 68Ga-PSMA
PET/CT could be a key technology for individualized radio-
therapy management in prostatecancer.
Keywords Prostatecancer .68Ga-PSMA ligandPET/CT .
Radiotherapy planning . Individualizedradiotherapy
Introduction
Radiotherapy playsan essential role in thecurativetreatment
of prostatecancer. Whilemoderatedosesof radiotherapy with
conventional techniquesseem to result in slightly inferior re-
sultscompared to radical surgery, modern technology hasthe
potential to overcomethis limitation [1].
New strategies in the management of localized prostate
cancer incorporatemoreand more individualized approaches
based on innovative imaging to enable dose-escalated treat-
ment. Individualized approaches already start at the point of
diagnostic workup, where multiparametric prostate MRI has
shown the possibilities of identifying special regions at risk
and guiding biopsy. A recent investigation presented high de-
tection rates even when previous biopsieshad been negative
[2]. Overall such atargeted diagnostic procedureresulted in a
higher percentage of cancer detection compared to classical
serial biopsy [3]. Generally MRI-guided biopsies are most
useful for improving the diagnosis of clinically significant
prostatecancersandreducingthediagnosisof clinically insig-
nificant cancers. Thus, overall thereisusually only aminimal
overall increasein all prostatecancer detection.
The importance of exact imaging and staging of course
continues in the therapeutic decision-making to tailor the
* Florian Sterzing
* Frederik L. Giesel
1 Department of Radiation Oncology, University Hospital Heidelberg,
Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
2 Clinical Cooperation Unit Radiation Oncology, German Cancer
Research Center (DKFZ), Heidelberg, Germany
3 Department of Nuclear Medicine, University Hospital Heidelberg,
Heidelberg, Germany
4 Heidelberg Instituteof Radiation Oncology, Heidelberg, Germany
5 Department of Radiation Oncology, Technical University Munich,
Munich, Germany
6 Department of Radiopharmaceutical Chemistry, German Cancer
Research Center (DKFZ), Heidelberg, Germany
7 Clinical Cooperation Unit Nuclear Medicine, German Cancer
Research Center (DKFZ), Heidelberg, Germany
Eur JNucl Med Mol Imaging
DOI 10.1007/s00259-015-3188-1
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Outpatient Radiopeptide Centre
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Prof Harvey Turner – Fremantle Hospital 2012
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Lu-177 PSMA in Ga-68 PSMA Avid Metastatic PCa
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Illustrative Video
77
https://www.youtube.com/watch?v=GRRmX5eTa8s
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Lu-177 PSMA in Treatment
78
177Lu-PSMA has been used safely in metastatic prostate cancer patients (>1000 worldwide – mostly
Germany) with promising results.
• Aims:
1. Assess safety of 177Lu-PSMA in a private hospital outpatient setting
2. Assess response on imaging and PSA criteria
3. Assess combination radiosensitizing chemotherapy with 177Lu-PSMA in selected patients
• Methods:
– 20 patients referred to Theranostics Australia Ramsay Hollywood Private Hospital for 177Lu-PSMA
due to progressive disease or difficult to manage local recurrence. All had 68Ga PSMA PET CT.
– All patients gave informed consent, treated under TGA Special Access Scheme.
– Received 2.5-7.5GBq 177Lu-PSMA (177Lu from ANSTO or ITG). 177Lu-PSMA synthesized by
radiochemist on Scintomics radiopharmaceutical production unit.
– Patients followed clinically with haematology/biochemistry, Ga-68 PSMA scans and QOL
assessment following treatment.
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Lu-177 PSMA in Treatment
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• Results: Mean age 69 years (range 53-87 years), all treated with 1-5 cycles of 177Lu-PSMA.
• 2/20 discontinued therapy after 1-2 cycles (medical reasons). 1 patient given 2 cycles of therapy,
following initial two cycles in Germany. 4 patients were treated with concurrent Docletaxol.
• 19 /20 no acute side-effects. 1/20 rash after cycles 2 and 3. 4/20 with mild xerostomia. 1/20 dry eyes.
8/20 reported lethargy. No significant change in renal/liver function noted. Minor changes in
haematology in 16 patients. Significant changes in haematology noted in 5 patients (1 with advanced
disease; 4 with concurrent chemotherapy). 1 patient combined treatment had G-CSF for neutropenia.
1 patient chemotherapy halted - flare of osteomyelitis.
• 17/20 : stabilization or regression of disease on PSA velocity and/or PSMA PET CT.
• Local control achieved in 5 pts with prostatic bed recurrence.
• Nodal & local disease appears to respond better than bone disease.
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Lu-177 PSMA in Treatment
80
[(177)Lu]-PSMA-617 radionuclide treatment in patients with metastatic castration-resistant
prostate cancer (LuPSMA trial): a single-centre, single-arm, phase 2 study.
Hofman MS, Violet J, Hicks RJ, Ferdinandus J, Ping Thang S, Akhurst T, Iravani A, Kong G,
Ravi Kumar A, Murphy DG, Eu P, Jackson P, Scalzo M, Williams SG, Sandhu S. Lancet
Oncol. 2018 May 7.
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Lu-177 PSMA in Treatment
83
• Now treated over 160 patients (over 600 doses administered); 90% endstage disease
• Responders 60-70% (30% good response; 30-40% stabilization)
• Myelotoxicity an issue if heavy pretreatment and extensive bone disease (Kesavan et al
2018)
• Previous radium treatment may affect myelotoxicity (bone marrow toxicity)
• No renal toxicity (Gallyamov et al 2018)
• No liver or lung toxicity
• Overall improvement in quality of life
• Nodal disease alone better PFS and OS compared with more extensive disease (Finn
et al 2018)
• Side effects – tiredness, dry mouth (10% after 3-4 treatments), nausea (20%)
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Lu-177 PSMA in Treatment
84
• Conclusions:
– 177Lu-PSMA is well tolerated with minimal side-effects.
– 177Lu-PSMA can be provided safely in an outpatient private hospital setting with
improvements in most patients on PSA and molecular imaging criteria.
– Improves PFS and OS in end stage disease; TheraP trial will assess if better than
2nd line chemotherapy
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Mr JD – 3 cycles: 17 GBq
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Mr JD – 3 cycles: 17 GBq
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Mr JD – 3 cycles: 17 GBq
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Mr J – 3 cycles: 17 GBq
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Important Dates
89
• First U.S. Multi-center Investigational Clinical Trial of 177 Lu PSMA-617 Targeted
Radioligand Therapy in Metastatic Castration Resistant Prostate Cancer Receives FDA
Clearance February 06, 2017 06:00 ET | Source: RadioMedix Inc.
• November 2017 - Endocyte Announces Exclusive Worldwide License of Phase 3 Ready
PSMA-Targeted Radioligand Therapy for Development in Prostate Cancer
• January 2018 - ANZUP Australian TheraP Trial: A Randomised Phase 2 Trial of 177Lu-
PSMA617 Theranostic Versus Cabazitaxel in Progressive Metastatic Castration
Resistant Prostate Cancer (ANZUP Protocol 1603)
http://www.anzup.org.au/content.aspx?page=lutetiumprostatecancertrial
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Actinium-225 PSMA
91
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Actinium-225 PSMA
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Clinical Trials
93
• LUPIN Trial – Dr Louise Emmett – St Vincent’s
• THERA-P Trial – Dr Louise Emmett – St Vincent’s; RNSH to commence
• Endocyte trial – overseas
• TARGET Trial – Dr Nat Lenzo – Perth and Sydney
• NIGHTCAP Trial – Dr Nat Lenzo – Perth and Sydney
• LuPSMA vs Docetaxol Trial – Dr Nat Lenzo – Perth and Sydney
• Lu-PSMA + immunotherapy – Prof Howard Gurney/ Dr Nat Lenzo - MUH
• ACT trial – South Africa/ Perth/Sydney – Prof Michael Sathekge/Dr Nat Lenzo
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Summary
94
• Long history of theranostics in nuclear medicine
• Molecular targets coupled with standardised production of diagnostic and therapeutic
radiopharmaceuticals has expanded potential imaging and therapeutic options
• Ga-68 PSMA rapidly taking over as diagnostic test of choice in staging and restaging
of prostate cancer
• Ga-68/Lu-177 PSMA very promising addition to management of prostate cancer
• Number of trials underway to further assess both Ga-68 and Lu-177 PSMA
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Acknowledgements
95
• Professor Harvey Turner, Dr Phil Claringbold, Dr Murali Kesavan, Mr Phillip Calais
• Nuclear Medicine staff at Fremantle Hospital
• PET staff at Oceanic Molecular
• Prof Hans Wester Technical University of Munich; Scintomics
• Theranostics Australia team – Dr Joe Cardaci, Dr Danielle Meyrick, Dr Jerome Barley,
Dr Sharon Yeo, Dr Magda Wajrak, Ms Sarah Ransom, Mrs Penny Fegan, Mr Ryan
Palmiero
• Staff at MUH and Genesis Care
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Fremantle Harbour
96