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Journal of nuclear medicine : official publication, Society of Nuclear Medicine

Somatostatin receptor-targeted radiopeptide therapy with 90Y-DOTATOC and 177Lu-DOTATOC in progressive meningioma: long-term results of a phase II clinical trial.


PMID 25593116

Abstract

Meningiomas express members of the somatostatin receptor family. The present study assessed the long-term benefits and harm of somatostatin-based radiopeptide therapy in meningioma patients. Patients with progressive unresectable meningioma were treated with (90)Y-DOTATOC and (177)Lu-DOTATOC until tumor progression or permanent toxicity occurred. Multivariable Cox regression analyses were used to study predictors of survival. Overall, 74 treatment cycles were performed on 34 patients. Stable disease was achieved in 23 patients. Severe hematotoxicity occurred in 3 patients, and severe renal toxicity in 1 patient. Mean survival was 8.6 y from the time of recruitment. Stable disease after treatment (hazard ratio, 0.017 vs. progressive disease; 95% confidence interval, 0.001-0.35; n = 34; P = 0.01) and high tumor uptake (hazard ratio, 0.046 vs. intermediate or low tumor uptake; 95% confidence interval, 0.004-0.63; n = 34; P = 0.019) were associated with longer survival. (90)Y-DOTATOC and (177)Lu-DOTATOC are promising tools for treating progressive unresectable meningioma, especially in cases of high tracer uptake in the tumor.