PSMA-targeted radiopharmaceuticals: An evolving approach to prostate cancer management

Access to this content is not permitted for healthcare professionals based in the UK

Back to CME
touchONCOLOGY touchONCOLOGY
Start activity

Tutorial

This icon indicates there is a poll question. Click it when you see it to interact with your peers.

Poll

Are baseline NLR and ALC values useful when selecting radioligand therapy? 

NLR, neutrophil-to-lymphocyte ratio; ALC, absolute lymphocyte count

Submit your answer to see the results

Not at all useful
   
Somewhat useful
   
Useful
   
Uncertain, more data needed
   
 
 
Start activity

Tutorial

This icon indicates there is a poll question. Click it when you see it to interact with your peers.

Poll

What do the data say most about sequential use of radioligand therapy in mCRPC?

Based on Sun et al. Abstract 1822P. ESMO 2023. mCRCP, metastatic castration-resistant prostate cancer.

Submit your answer to see the results

Sequential use is safe and efficacy is maintained
   
Order in which radiopharmaceuticals can be used
   
Number of times they can be used over time
   
Organ toxicities associated with cumulative use
   
 
 
Start activity

Tutorial

This icon indicates there is a poll question. Click it when you see it to interact with your peers.

Poll

What is your key takeaway from the PMSAfore trial on the use of 177Lu-PSMA-617?

ARPI, androgen receptor pathway inhibition; HRQoL, health-related quality of life; OS, overall survival; SOC, standard of care

Submit your answer to see the results

Side effects are similar to ARPIs and less than chemotherapy
   
OS results are confounded and too early to quantify survival benefit
   
Offers improved HRQoL compared with ARPIs
   
Will lead to its earlier use and a new SOC in the pre-taxane setting
   
 
 
Take CE/CME Test
Prostate Cancer, Genitourinary Cancer, Radiotherapy CE/CME accredited

touchCONGRESS
Our faculty interpret key data from the congress, complimented by an expert panel discussing what has been presented. Close

PSMA-targeted radiopharmaceuticals: An evolving approach to prostate cancer management

Learning Objectives

After watching this activity, participants should be better able to:

  • Describe potential strategies to refine selection of patients with advanced prostate cancer for treatment with PSMA-targeting radiopharmaceuticals
  • Outline how the latest data for PSMA-targeting radiopharmaceuticals may impact the timing of their use in patients with advanced prostate cancer
  • Analyse the latest data on radiopharmaceuticals in advanced prostate cancer, including combination strategies and novel agents in clinical development
Overview

In this activity, the key data on the use of prostate-specific membrane antigen-targeted radiopharmaceuticals in prostate cancer presented at ESMO 2023 will be reviewed by three experts in prostate cancer. These experts will discuss the potential implications of these data on clinical practice.

This activity was filmed following the ESMO 2023 Congress (Madrid, Spain, 20–24 October 2023).

This activity is jointly provided by USF Health and touchIME. read more

Target Audience

This activity has been designed to meet the educational needs of oncologists, prostate cancer specialists, urologists and radiation oncologists involved in the management of prostate cancer.

Disclosures

USF Health adheres to the Standards for Integrity and Independence in Accredited Continuing Education. All individuals in a position to influence content have disclosed to USF Health any financial relationship with an ineligible organization. USF Health has reviewed and mitigated all relevant financial relationships related to the content of the activity. The relevant relationships are listed below. All individuals not listed have no relevant financial relationships.

Faculty

Prof. Oliver Sartor discloses: Advisory board or panel fees from ArtBio, Clarity, Convergent and NorthStar. Consultant fees from Advanced Accelerator Applications, a Novartis company, Amgen, ArtBio, Astellas, AstraZeneca, Bayer, Blue Earth Diagnostics, Clarity, Convergent, EMD Serono, Fusion, Genzyme, Hengrui, Isotopen Technologien München, Janssen, Merck, Myovant, Myriad, Noria Therapeutics, NorthStar, Novartis, Point BioPharma, Pfizer, Ratio Therapeutics, Sanofi, Telix and Theragnostics. Grants/research support from Advanced Accelerator Applications, a Novartis company, Amgen, AstraZeneca, Bayer, Invitae, Janssen, Lantheus, Merck and Sanofi. Stock/shareholder (self-managed) AbbVie, ArtBio, Cardinal Health, Convergent, Eli Lilly, Fusion Pharmaceuticals, Point Biopharma, Ratio Therapeutics, Rayze, Telix and United Health Group.

Prof. Francesco Ceci discloses: Advisory board or panel fees from Novartis and Telix (relationships terminated). Consultant fees from Curium and Novartis (relationships terminated). Other financial or material support from Bayer, Curium, Janssen Oncology, Novartis, Radmetrix and Telix (relationships terminated).

Dr Heather Jacene discloses: Advisory board or panel fees from Spectrum Dynamics Medical Ltd. Consultant fees from Blue Earth Diagnostics. Grant/research support fees from GTx and Siemens.

Content Reviewer

Alicia Ann Canalejo, MSN, ARNP-C has no financial interests/relationships or affiliations in relation to this activity.

Touch Medical Contributors

Kathy Day has no financial interests/relationships or affiliations in relation to this activity.

USF Health Office of Continuing Professional Development and touchIME staff have no financial interests/relationships or affiliations in relation to this activity.

Requirements for Successful Completion

In order to receive credit for this activity, participants must review the content and complete the post-test and evaluation form. Statements of credit are awarded upon successful completion of the post-test and evaluation form.

If you have questions regarding credit please contact cpdsupport@usf.edu.

Accreditations

Physicians

This activity has been planned and implemented in accordance with the accreditation requirements and policies of the Accreditation Council for Continuing Medical Education (ACCME) through a joint providership of USF Health and touchIME. USF Health is accredited by the ACCME to provide continuing medical education for physicians.

USF Health designates this enduring material for a maximum of 1.0 AMA PRA Category 1 CreditTM.  Physicians should claim only the credit commensurate with the extent of their participation in the activity.

The European Union of Medical Specialists (UEMS) – European Accreditation Council for Continuing Medical Education (EACCME) has an agreement of mutual recognition of continuing medical education (CME) credit with the American Medical Association (AMA). European physicians interested in converting AMA PRA Category 1 CreditTM into European CME credit (ECMEC) should contact the UEMS (www.uems.eu).

Advanced Practice Providers

Physician Assistants may claim a maximum of 1.0 Category 1 credits for completing this activity. NCCPA accepts AMA PRA Category 1 CreditTM from organizations accredited by ACCME or a recognized state medical society.

The AANPCP accepts certificates of participation for educational activities approved for AMA PRA Category 1 CreditTM by ACCME-accredited providers. APRNs who participate will receive a certificate of completion commensurate with the extent of their participation.

Date of original release: 27 November 2023. Date credits expire: 27 November 2024.

If you have any questions regarding credit please contact cpdsupport@usf.edu.

This activity is CE/CME accredited

To obtain the credit(s) from this activity, please complete this post-activity test.

Claim Credit

Course Modules

Topics covered in this activity

Prostate Cancer / Genitourinary Cancer / Radiotherapy
REGISTER NOW FOR FREE ACCESS TO
  • 1000+ topical and insightful peer-reviewed journal articles
  • 100+ hours of bite-sized congress highlights
  • 9 major therapy areas packed with the latest scientific advances
  • 150+ specialties offering learn-on-the-go medical education
  • + Concise email updates and newsletters so you never miss out
Register For Free Now
Claim Credit
touchCONGRESS
PSMA-targeted radiopharmaceuticals: An evolving approach to prostate cancer management
1.0 CE/CME credit

Question 1/5
Based on post hoc analyses evaluating the prognostic worth of NLR and lymphopenia in the VISION study cohort, which baseline NLR and ALC values may be associated with worst outcomes for OS and rPFS and can be used when counseling patients on whether to add 177Lu-PSMA-617 to the SOC?

ALC, absolute lymphocyte count; NLR, neutrophil-to-lymphocyte ratio; OS, overall survival; PSMA, prostate-specific membrane antigen; rPFS, radiographic progression-free survival; SOC, standard of care.

Post hoc analyses of the prognostic worth of NLR and lymphopenia in the VISION study cohort demonstrated that baseline ALC <1.0×103/μL was associated with a shorter median rPFS compared with ALC ≥1.0×103/μL (rPFS 8.0 months vs 10.8 months, respectively) in patients treated with 177Lu-PSMA-617 plus SOC. Baseline NLR ≥3 and ALC <1.0×103/μL were prognostic for worse OS and rPFS in patients with mCRPC regardless of treatment received. 

Abbreviations

ALC, absolute lymphocyte count; mCRPC, metastatic castration-resistant prostate cancer; NLR, neutrophil-to-lymphocyte ratio; OS, overall survival; PSMA, prostate-specific membrane antigen; rPFS, radiographic progression-free survival; SOC, standard of care.

Reference

Wei X, et al. Presented at: ESMO Congress 2023, Madrid, Spain. 20–24 October 2023. Abstr 1838P.

Question 2/5
Your patient with mCRPC is about to start 225Ac-J591 TAT as part of a clinical trial. They are concerned about the impact their previous management with 223Ra may have on the effect of treatment with 225Ac-J591. How would you advise this patient in terms of what clinical outcomes you might expect with 225Ac-J591 in this patient compared with their counterparts who have not received prior 223Ra?

mCRPC, metastatic castration-resistant prostate cancer; OS, overall survival; PFS, progression-free survival; PSA, prostate-specific antigen; TAT, targeted alpha therapy.

Results from a retrospective combined analysis of data from patients with mCRPC receiving 225Ac-J591 TAT in prospective clinical trials (NCT03276572; NCT04506567; NCT04886986; NCT04946370) concluded that there were no significant differences in efficacy outcomes for patients treated with 225Ac-J591 who had received prior 223Ra, compared with patients who had not; biochemical progression-free survival: 3.93 vs 4.83 months (p=0.39); overall survival: 10.7 vs 17.3 months (p=0.12); PSA50-RR: 53% vs 57% (p=0.8).

Abbreviations

mCRPC, metastatic castration-resistant prostate cancer; PSA, prostate-specific antigen; PSA50-RR, PSA50 response rate (≥50% reduction in PSA levels from baseline); TAT, targeted alpha therapy.

Reference

Sun M, et al. Presented at: ESMO Congress 2023, Madrid, Spain. 20–24 October 2023. Abstr 1822P.

Question 3/5
After returning from ESMO 2023, you are discussing treatment plans for a patient with taxane-naive, PSMA-positive mCRPC who is eligible for 177Lu-PSMA therapy. A colleague asks whether the patient would benefit from docetaxel prior to receiving 177Lu-PSMA therapy. Which of the following statements would you use to support a decision to prescribe 177Lu-PSMA (should this option be available), based on the outcomes from the first interim analyses of the phase II data?

ESMO, European Society for Medical Oncology; mCRPC, metastatic castration-resistant prostate cancer; PSA, prostate-specific antigen; PSA50-RR, PSA50 response rate; PSMA, prostate-specific membrane antigen.

The first interim analysis of a small, single-centre, phase II study (IRST-185.03) concluded that after a median follow-up of 28.8 months, 177Lu-PSMA-617 achieved favourable clinical outcomes in the pre-taxane setting compared with post-taxane: PSA50-RR: 54.8% vs 35%; median progression-free survival: 8.5 vs 6.0 months (HR 0.65, 95% CI 0.44–0.95; p=0.038); median overall survival: 35.1 vs 12.6 months (HR 0.31, 95% CI 0.19–0.49; p=0.0002). No grade 3 adverse events were reported in the pre-taxane cohort.

Abbreviations

CI, confidence interval; HR, hazard ratio; PSA, prostate-specific antigen; PSA50-RR, PSA50 response rate; PSMA, prostate-specific membrane antigen.

Reference

Giunta EF, et al. Presented at: ESMO Congress 2023, Madrid, Spain. 20–24 October 2023. Abstr 1826P.

Question 4/5
You have a patient who is enrolled in the PSMAfore study. At their latest follow-up appointment they say that they have heard that the second interim analysis results have been released and they would like to know about the progression-free survival data. How would you describe the results to this patient?

ARPI, androgen receptor pathway inhibition; PSMA, prostate-specific membrane antigen; rPFS, radiographic progression-free survival.

PSMAfore is a phase III clinical trial comparing 177Lu-PSMA-617 with ARPI change in taxane-naive patients with metastatic castration-resistant prostate cancer. Data from the second interim analysis demonstrated a substantially longer radiographic progression-free survival in patients receiving 177Lu-PSMA-617 compared with ARPI change (12.02 months vs 5.59 months, respectively; HR 0.43, 95% CI 0.33–0.54).

Abbreviations

ARPI, androgen receptor pathway inhibition; CI, confidence interval; HR, hazard ratio; PSMA, prostate-specific membrane antigen.

Reference

Sartor O, et al. Presented at ESMO Congress 2023, 20–24 October 2023. Madrid, Spain. Abstr LBA13.

Question 5/5
What proportion of patients with mCRPC who are receiving enzalutamide and 177Lu-PSMA-617 are likely to experience a 90% reduction in their prostate-specific antigen levels from baseline after 20 months?

mCRPC, metastatic castration-resistant prostate cancer; PSMA, prostate-specific membrane antigen.

The ENZA-p study evaluated the activity and safety of combining enzalutamide with adaptive dosing of 177Lu-PSMA-617 vs enzalutamide alone as a first-line treatment for mCRPC. Outcomes from the prespecified interim analysis after a median of 20 months (data cut-off: 18 May 2023) showed that 78% of patients receiving 177Lu-PSMA-617 had a 90% reduction from their baseline prostate-specific antigen level vs 37% of those receiving enzalutamide alone. 

Abbreviations

mCRPC, metastatic castration-resistant prostate cancer; PSMA, prostate-specific membrane antigen.

Reference

Emmett L, et al. Presented at ESMO Congress 2023, 20–24 October 2023. Madrid, Spain. Abstr LBA84.

Back to Activity
Copied to clipboard!
accredited arrow-down-editablearrow-downarrow_leftarrow-right-bluearrow-right-dark-bluearrow-right-greenarrow-right-greyarrow-right-orangearrow-right-whitearrow-right-bluearrow-up-orangeavatarcalendarchevron-down consultant-pathologist-nurseconsultant-pathologistcrosscrossdownloademailexclaimationfeedbackfiltergraph-arrowinterviewslinkmdt_iconmenumore_dots nurse-consultantpadlock patient-advocate-pathologistpatient-consultantpatientperson pharmacist-nurseplay_buttonplay-colour-tmcplay-colourAsset 1podcastprinter scenerysearch share single-doctor social_facebooksocial_googleplussocial_instagramsocial_linkedin_altsocial_linkedin_altsocial_pinterestlogo-twitter-glyph-32social_youtubeshape-star (1)tick-bluetick-orangetick-red tick-whiteticktimetranscriptup-arrowwebinar Sponsored Department Location NEW TMM Corporate Services Icons-07NEW TMM Corporate Services Icons-08NEW TMM Corporate Services Icons-09NEW TMM Corporate Services Icons-10NEW TMM Corporate Services Icons-11NEW TMM Corporate Services Icons-12Salary £ TMM-Corp-Site-Icons-01TMM-Corp-Site-Icons-02TMM-Corp-Site-Icons-03TMM-Corp-Site-Icons-04TMM-Corp-Site-Icons-05TMM-Corp-Site-Icons-06TMM-Corp-Site-Icons-07TMM-Corp-Site-Icons-08TMM-Corp-Site-Icons-09TMM-Corp-Site-Icons-10TMM-Corp-Site-Icons-11TMM-Corp-Site-Icons-12TMM-Corp-Site-Icons-13TMM-Corp-Site-Icons-14TMM-Corp-Site-Icons-15TMM-Corp-Site-Icons-16TMM-Corp-Site-Icons-17TMM-Corp-Site-Icons-18TMM-Corp-Site-Icons-19TMM-Corp-Site-Icons-20TMM-Corp-Site-Icons-21TMM-Corp-Site-Icons-22TMM-Corp-Site-Icons-23TMM-Corp-Site-Icons-24TMM-Corp-Site-Icons-25TMM-Corp-Site-Icons-26TMM-Corp-Site-Icons-27TMM-Corp-Site-Icons-28TMM-Corp-Site-Icons-29TMM-Corp-Site-Icons-30TMM-Corp-Site-Icons-31TMM-Corp-Site-Icons-32TMM-Corp-Site-Icons-33TMM-Corp-Site-Icons-34TMM-Corp-Site-Icons-35TMM-Corp-Site-Icons-36TMM-Corp-Site-Icons-37TMM-Corp-Site-Icons-38TMM-Corp-Site-Icons-39TMM-Corp-Site-Icons-40TMM-Corp-Site-Icons-41TMM-Corp-Site-Icons-42TMM-Corp-Site-Icons-43TMM-Corp-Site-Icons-44TMM-Corp-Site-Icons-45TMM-Corp-Site-Icons-46TMM-Corp-Site-Icons-47TMM-Corp-Site-Icons-48TMM-Corp-Site-Icons-49TMM-Corp-Site-Icons-50TMM-Corp-Site-Icons-51TMM-Corp-Site-Icons-52TMM-Corp-Site-Icons-53TMM-Corp-Site-Icons-54TMM-Corp-Site-Icons-55TMM-Corp-Site-Icons-56TMM-Corp-Site-Icons-57TMM-Corp-Site-Icons-58TMM-Corp-Site-Icons-59TMM-Corp-Site-Icons-60TMM-Corp-Site-Icons-61TMM-Corp-Site-Icons-62TMM-Corp-Site-Icons-63TMM-Corp-Site-Icons-64TMM-Corp-Site-Icons-65TMM-Corp-Site-Icons-66TMM-Corp-Site-Icons-67TMM-Corp-Site-Icons-68TMM-Corp-Site-Icons-69TMM-Corp-Site-Icons-70TMM-Corp-Site-Icons-71TMM-Corp-Site-Icons-72