MATERIALS AND METHODS:
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The first 3 patients were treated with a lower activity of 3.7 GBq in cycle 1. Due to a favorable safety profile the activity was increased to 7.4 GBq in 19 subsequent patients who completed a total of 40 cycles. With the higher activity no grade 3/4 toxicities were observed. The main nonhematological and hematological grade 1/2 toxicities were dry mouth in 7 patients (37%), anemia in 6 (32%) and thrombopenia in 5 (25%). The proportion of patients who achieved a maximum prostate specific antigen decrease of 30% or greater, 50% or greater and 90% or greater was 56%, 33% and 11%, respectively. Combined assessment of bone and soft tissue metastases showed complete remission in 5% of patients, stable disease in 63% and progressive disease in 32%. ECOG performance status improved or was stable in 74% of patients. Of men with bone pain 58% achieved complete resolution or reduced pain.
Radioligand therapy with (177)Lu-PSMA-I&T appears to be safe and active in heavily pretreated patients with metastatic castration resistant prostate cancer.
J Urol. 2016 Aug;196(2):382-91. doi: 10.1016/j.juro.2016.02.2969. Epub 2016 Mar 8.
Heck MM1, Retz M2, D'Alessandria C3, Rauscher I3, Scheidhauer K3, Maurer T2, Storz E2, Janssen F4, Schottelius M5, Wester HJ5, Gschwend JE2, Schwaiger M3, Tauber R2, Eiber M3.
1Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany. Electronic address: .
2Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
3Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
4 Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
5 Pharmaceutical Radiochemistry, Technical University of Munich, Garching, Germany.