Rechallenge With 177 Lu-PSMA Radioligand Therapy in Metastatic Castration-resistant and Hormone-sensitive Prostate Cancer : Lessons From a Multicase Experience.
Faeze Rabani, Nikoo Rezaei, Amin Tanha Saber et al.
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Case in brief
Four patients with metastatic hormone-sensitive and castration-resistant prostate cancer were treated with 177 Lu-PSMA-617 radioligand therapy. Initial treatment resulted in significant declines in PSA levels, pain relief, and positive radiographic responses. Following disease progression, rechallenge with additional cycles of 177 Lu-PSMA led to renewed PSA reductions and sustained symptomatic improvement, with no severe toxicities observed.
Diagnostic / clinical pearl
Rechallenge with 177 Lu-PSMA-617 radioligand therapy can be effective in patients with metastatic prostate cancer who have previously progressed after initial treatment.
Why it matters
This case highlights the potential for effective retreatment strategies in advanced prostate cancer, suggesting that prior exposure to radioligand therapy does not eliminate the possibility of future benefits.