RT Journal Article SR Electronic T1 Developing a Patient-Reported Outcome Measure for Radionuclide Therapy for Prostate Cancer JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 869 OP 872 DO 10.2967/jnumed.122.264946 VO 64 IS 6 A1 Gudenkauf, Lisa M. A1 Chavez, Melody N. A1 Maconi, Melinda Leigh A1 Geiss, Carley A1 Seyedroudbari, Ameen A1 Thin, Pan A1 Hoogland, Aasha I. A1 Nguyen, Kathleen A1 Murthy, Vishnu A1 Armstrong, Wesley R. A1 Komrokji, Khaled A1 Oswald, Laura B. A1 Jim, Heather S.L. A1 El-Haddad, Ghassan A1 Fendler, Wolfgang P. A1 Herrmann, Ken A1 Cella, David A1 Czernin, Johannes A1 Hofman, Michael S. A1 Dicker, Adam P. A1 Calais, Jeremie A1 Tagawa, Scott T. A1 Gonzalez, Brian D. YR 2023 UL http://jnm.snmjournals.org/content/64/6/869.abstract AB The field of radionuclide therapy (RNT) for prostate cancer (PC) is growing rapidly, with recent Food and Drug Administration approval of the first 177Lu-PSMA ligand. We aimed to develop the first patient-reported outcome (PRO) measure for PC patients receiving RNT. Methods: We identified relevant symptoms and toxicities by reviewing published trials and interviews with PC patients receiving RNT (n = 29), caregivers (n = 14), and clinicians (n = 11). Second, we selected items for measure inclusion. Third, we refined the item list with input from experts in RNTs and PROs. Fourth, we finalized the Functional Assessment of Cancer Therapy–Radionuclide Therapy (FACT-RNT) with patient input. Results: This multistep process yielded a brief 15-item measure deemed by key stakeholders to be relevant and useful in the context of RNT for PC. Conclusion: The FACT-RNT is a new standardized tool to monitor relevant symptoms and toxicities among PC patients in RNT trials and real-world settings.