TPS294Background:
Approval of [
177
Lu]Lu-PSMA-617 (
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Lu-PSMA-617) for the treatment of adult patients with prostate-specific membrane antigen (PSMA)-positive metastatic castration-resistant prostate cancer, previously treated with androgen receptor pathway inhibitors and taxane-based chemotherapy, was based on the results of the Phase 3 VISION study (NCT03511664). It is important to further characterize long-term safety outcomes in
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Lu-PSMA-617–treated patients, with particular regard to potential treatment-related risks. To this end, the long-term follow-up (LTFU) safety study (NCT05803941) has been established. Findings from the LTFU study will be crucial for assessing delayed toxicities for patients with PSMA-positive metastatic prostate cancer treated with
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Lu-PSMA-617 globally.
Methods:
The LTFU study is a prospective, multi-center, non-EU post-authorization safety study. Patients who received ≥1 dose of
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Lu-PSMA-617 within one of the prospective parent studies (Table 1) are eligible. Patients may enroll in the LTFU study after fulfilling the requirements of their corresponding parent study. The primary endpoint is the number and proportion of selected adverse events (AEs), including myelosuppression, xerostomia, renal failure, xerophthalmia, and second primary malignancies (eg, myelodysplastic syndrome or acute myeloid leukemia), other serious AEs, and changes in laboratory values. The secondary endpoint is the number and proportion of deaths. Following enrollment, patients will undergo assessments at baseline, and then every 6–8 months for up to 10 years after their first dose of
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Lu-PSMA-617 or until death. At each visit, a review of selected treatment-related AEs (xerostomia, xerophthalmia, myelosuppression), any-cause AEs (renal toxicity, new diagnoses of second primary malignancies), and treatment-related serious AEs will be conducted. Physical and laboratory assessments, as well as details on concomitant medications and interventions, including anti-cancer therapies, will be collected. Patients may receive treatment with any medical intervention. Interim analyses are planned at 2 and 5 years post-study activation. Enrollment is ongoing (n=13). Clinical trial information:
NCT05803941
.
Parent studies of the long-term follow-up safety study.TrialIndicationPhaseN (all groups)ClinicalTrials.gov IDVISION (+sub-study)Post-taxane mCRPC3831 (+30)NCT03511664PSMAforePre-taxane mCRPC3469NCT04689828PSMAdditionmHSPC31144NCT04720157177
Lu-PSMA-617 in patients with moderately or severely impaired, or normal renal function
Post-taxane mCRPC2
20
aNCT06004661a
Planned.
mCRPC, metastatic castration-resistant prostate cancer; mHSPC, metastatic hormone-sensitive prostate cancer.