Prognostic value of circulating tumor DNA and copy-number alterations in patients receiving tandem [225Ac]Ac-/[177Lu]Lu-PSMA-617 therapy for metastatic castration-resistant prostate cancer: a prospective observational study - Mariam Amghar; Thomas Hielscher; Tobias Rausch; Hilal Özgür; Ulrike Bauder-Wüst; Hendrik Rathke; Frank Bruchertseifer; Alfred Morgenstern; Mareike Roscher; Vladimír Beneš; Clemens Kratochwil; Martina Benešová-Schäfer (BMC Cancer, 2026)