On Target: Understanding the Impact of PSMA for Diagnostic and Therapeutic Strategies in Prostate Cancer
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May 24, 2024
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About This Presentation
Chair Oliver Sartor, MD, discusses prostate cancer in this CME activity titled “On Target: Understanding the Impact of PSMA for Diagnostic and Therapeutic Strategies in Prostate Cancer.” For the full presentation, downloadable Practice Aids, and complete CME information, and to apply for credit,...
Chair Oliver Sartor, MD, discusses prostate cancer in this CME activity titled “On Target: Understanding the Impact of PSMA for Diagnostic and Therapeutic Strategies in Prostate Cancer.” For the full presentation, downloadable Practice Aids, and complete CME information, and to apply for credit, please visit us at https://bit.ly/49oY4IJ. CME credit will be available until May 23, 2025.
Size: 2.9 MB
Language: en
Added: May 24, 2024
Slides: 41 pages
Slide Content
On Target
Understanding the Impact of PSMA
for Diagnostic and Therapeutic Strategies
in Prostate Cancer
Conventional imaging has limitations in detecting prostate
cancer, both in initial staging and for recurrence or spread after
initial primary treatment, including poor detection of early spread
to distant organs
+ PSMA-PET offers the potential for metastatic detection before
standard imaging and can be an informative diagnostic tool to
support treatment plan development
PSMA PET Imaging To Stage Disease or
Select Patients for Therapy’
How do PSMA PET scans differ from current prostate cancer imaging options, such as CT or prostate MRI?
(PSMA PET O) (wo imaging scans of a man who had a prostatectomy
+ Directly targets the tumor on a molecular level to the year before and was found to have a small, but abnormal
show disease more accurately and at an earlier stage | | rise in PSA level
+ Easily outperforms conventional imaging + Afollow-up CT scan showed a normal-appearing, 2 mm
+ CT, MRI, and bone scans cannot match the ability of lymph node (green arrow)
PSMA PET to find very small tumors + APMSAPET scan spotted prostate cancer cells in the tiny
PSMA PET Imaging To Stage Disease or
Select Patients for Therapy’
7 A
+ 74-year-old with high-risk prostate cancer + Example of local recurrence in a 75-year-old patient
+ Pre-surgical planning 68Ga-PSMA-11 PET/CT presenting with slowly rising PSA after prostatectomy 20
+ Single PSMA avid 2 mm right internal iliac chain years prior
lymph node (white arrow in panels a and d), not well + F18-DCFPyL PET/CT shows focal uptake in the right
seen on CT (white arrow on panel c) ) surgical bed at the anastomosis (white arrows)
« FDA-approved PSMA PET radiopharmaceutical imaging agents
for patients with localized PSMA-positive disease at initial
staging and at the time of biochemical recurrence
Appropriate Use Criteria for Use of PSMA-PET
Imaging in Prostate Cancer Patients’
Scena
Description Appropriatene:
Patients with suspected prostate cancer (eg, high/rising PSA levels, abnormal digital rectal examination results)
il evaluated with targeted biopsy and detection of intraprostatic tumor Rarely eppropriate
2 Patients with very low, low, and favorable intermediate-risk prostate cancer Rarely appropriate
3 Newly diagnosed unfavorable intermediate, high-risk, or very-high-risk prostate cancer Appropriate
" Nowy dagnaseduntavorabe intermedi ig, or ven-highik prostate cancer wih ngalvelequivocalor appropriate
igometastatic disease on conventional imaging
5 Newly diagnosed prostate cancer with widespread metastatic disease on conventional imaging May be appropriate
6 PSA persistence or PSA rise from undetectable level after radial prostatectomy Appropriate
7 PSA rise above nadir after definitive radiotherapy Appropriate
8 PSA rise after focal therapy of the primary tumor May be appropriate
9 nmCRPC (MO) on conventional imaging Appropriate
46 Eestteetnet FSA ios he mGRPC sting na patent ot being cosida for PEMA AN ra y be appropiate
" Evaluation of eligibility for patients being considered for PSMA-targeted radioligand therapy Appropriate
12 Evaluation of response to th May be appropriate
Y Jose Weta MM 22205048 2 Horn Sta Ab Rade! 2020482603623. PeerView.com
Phase 3 VISION:
177Lu-PSMA-617 Plus Best SOC in mCRPC
Key Eligibility Criteria
Previous treatment with both
= =1lendrogen receptor pathway) Protocol-permitted SOC +
foie LA PSMA SAT 2
— 4 or 2taxane regimens 7.4 GBq (200 mCi) every 6 weeks ere .
+ Protocol-permitted SOC planned ble to 6 s [?2| |s Primary
before randomization $8 E endpoint:
= Excluding chemotherapy, =| [E
immunotherapy, radium-233, E 19 2 re bad
investigational drugs Protocol-permitted SOC alone i
+ ECOG performance status 0-2
+ Life expectancy >6 months
PSMA-positive mCRPC on PET/CT CTIMRUbone scans
with ®Ga-PSMA-11
+ Every 8 weeks (treatment)
+ Every 12 weeks (follow-up)
Randomization stratified by + Blinded independent
+ ECOG status (0-1 or 2) central review
+ LDH (high or low)
+ Liver metastases (yes or no)
+ Androgen receptor pathway inhibitors in SOC (yes or no)
177Lu-PSMA-617 Plus Best SOC
Improved OS and rPFS in mCRPC*S “=
*77Lu-PSMA-617 Improved OS ‘7Lu-PSMA-617 Improved rPFS
> HR = 0.62 (95% Cl, 0.52-0.74); P< 001 (one-sided) 2 ” HR = 0.40 (95% Cl, 0.29-0.57); P< .001 (one-sided)
x Median OS: 15.3 v5 11.3 mo sE” Median (PFS: 8.7 vs 3.4 mo
go óleo
EN ae
ge
a mupsmasi7+ 5% °
Ee SOC (n = 551) ¿5 a "ILu-PSMA-617 +
= à ¡SOC (n = 385)
e SOC (n = 280) ii SOC (n = 196)
Time From Randomization, mo Time From Randomization, mo
+ Both primary endpoints met: improved OS and rPFS in patients receiving 77Lu-PSMA-617 + best SOC compared
with those receiving best SOC alone
+ Higher incidence of TEAEs with 77Lu-PSMA-617 + SOC vs SOC, but treatment exposure was 23 times longer
in the 177Lu-PSMA-617 + SOC arm; exposure-adjusted safety analyses showed comparable findings for both arms
ron ct LAC ASCO Sas ona a à Pa DC sr bn Pron cr Top a ONAN SCT Peel VieW.com
77Lu-PSMA-617 + SOC (n = 333) SOC Alone (n = 138) 40
100 ®
E y
5 Es
“a é
EE 3
¿do ón
as == È
as Sova. E
$£s E
3 EHE v
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o
Partial "Stable Progressive” Unknown
Response Disease Disease,
ne rare gg ess | PesiVicicom
187(353) 241168)
‘Back pain 124 @34) 1782) 30 (146) 764)
Aral 118223) sam 2027 103)
Decreased appetite 12212) 1019) 30(148) 1005)
Constpated 107 (202) san 2012) 103)
Diarhes 100 (189) 408) ses 1005)
Vomiting 100 (189) 509) 1363) 103)
Trombocytopenia 172) 209 94) 20)
Lymphopenia, 75042) 4103) ses) 1005)
Leukopenia (125) 1985 4@) 1005)
[RE that lod Yo reduction Of LU PSMA DIT dose EX] To) NA NA
AE that led to interruption of "LuPSMAS17 85 (16.1) 209 NA NA
AE that led to discontinuation of "Lu-PSMA-617 9) 37) NA NA
Phase 3 PSMAfore:
177Lu-PSMA-617 in Taxane-Naive mCRPC!
PeerView.com/QSV827
*7Lu-PSMA-617
7.4 GBq (200 mCi) + 10%
Key Eligibility Criteria
+ Confirmed progressive
mCRPC
+ 21 PSMA-positive metastatic
lesion on [°Ga]Ga-PSMA-11
Stratification
> h i
+ Prior ARPI setting paca %
ne) (castration-resistant Crossover allowed 3
Est à vs hormone- upon radiographic tL
te essed leche sensitive) progression by BICR |
eo + BPISFworstpain hu] "7777700 2
u cone orcas intensity score E
+ Taxane-naive (except (0-3 vs >3)
[neoJadjuvant >12 mo ago)
= Not eligible for a PARPI ARPI change
abiraterone zalutamide
ECOG PS 0-1
+ Primary endpoint: PFS
+ Key secondary endpoint: OS
+ Exploratory endpoints: ORR, DCR, DOR
1 an Ou Es 2020 LAr PeerView.com
= Events, n (%) 115 (49.1) 168 (71.8)
cy Median rPFS, mo 12.02 5.59
(95% Cl) (930-1442) _(4.17-5.95)
“o
von
Primary HR = 0.41 7Lu-PSMA-617
Event-Free Probability, %
204 (95% Cl, 0.29-0.56); P < .0001 u a
Updated HR = 0.43 (95% CI, 0.33-0.54) a ARPI change
zs 6 6 E 1 ve 1 à» à
Time From Randomization, mo
No, at Risk
24 26 174 150 4125 8 6 45 m 10 2
m 17 mn 65 3% 24 1 8 4 a
(ADT and ARP!) + Previous or planned Bee Efficacy olow-up
+ PSMA-posiive on treatment of primary (Wend of treatment
['Ga]Ga-PSMA-11 tumor was any reason
PETICT ter than
PeerView.com
‘documented PD by
(N= 1.144)
BICR)
{tsi int goa NCTORTIONS, 2 Tags St ASCO A Ant TSH,
+ Different targets
+ Different isotopes
- "Lu-PSMA-617, 177Lu-PSMA-18.T, '77Lu-rhPSMA-10.1, 225Ac-PSMA, and more
+ Many combinations
- Immunotherapy
— DNA repair inhibitors
- Radiation sensitizers
+ Earlier disease stages
Patient Characteristics, Treatment Patterns, and Outcomes Among
Early Adopters of 177Lu-PSMA-617: A Real-World US Study!
9/01/2021 613012023
+ The mean time from mCRPC diagnosis to initiation
Tepe of 177Lu-PSMA-617 was 339.3 days
date (index date)
Baseline period
rcs (including race/ethnicity)
+ Both clinical characteristics and observed PSA responses are consistent with results from the
VISION clinical trial demonstrating benefit with '77Lu-PSMA-617 in the real-world setting
+ In a subset analysis, more than half of patients on 177Lu-PSMA-617 experienced a 250% reduction in PSA
+ 29.6% of patients saw a 280% PSA reduction
+ 22.6% of patients saw a 290% reduction
What patients say What patients say What patients say
“Who's going to be giving the
‘How does it work? drug?
How does this radioactivity find its ‘How long is it going to last?’ What side effects will | encounter?’
way to the cancer cell?” What kind of observation period
going to happen’
How providers can respond How providers can respond How providers can respond
+ Explain that PSMA is on the + Let patients know that the drug is i
een ‘administered over a very short un know that dry mouth is,
riod of time, <5 minutes
+ Show patients the PSMA-PET en 5 ë i ir
image so they can see where the + Explain that they are going to be Provide suggestions to cruels
es 5 the saliva flow, such as drinking
cancer is and that the isolated for a couple of hours Gee ae
radioisotope will target this + Describe urinary precautions non ler eh
location + Provide instructions for social
distancing for first few days
Educating Your Patients and Staff About
the Importance of and Access to Clinical Trials
Why Is Clinical Trial Participation Important?
+ Clinical trials are a key step in translating research into
medicines that can cure illness, slow disease, and improve
quality of life for patients Providers need to discuss and offer
* Robust participation in clinical trials with diverse enrollment clinical trial opportunities to all patients
means a shorter timeline between medical discovery and
patient access to potentially life-changing treatments
Increasing diversity in clinical trial
enrollment is crucial
Clinical Trial Participation Offers Dual Benefits for Patients
1. Potential personal benefit: Patients may experience improved disease outcomes and better health if they receive
otherwise unavailable medical therapies
2. Social benefit: Clinical trial participation helps provide access for patients who may benefit from the new treatment
option by moving a new therapy closer to market
Increased Awareness = Greater Participation = Patient Access to New Therapies
Lack of Patient Awareness = Lack of Participation = Delays and Higher Costs
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