Endocrine Abstracts

Background: In the core phase of the PAPE study until 24 weeks we have shown that switching to pasireotide LAR (PAS-LAR) in well-controlled acromegaly patients receiving combination therapy of somatostatin analogues and pegvisomant (PEGV), normalizes IGF1 levels in the majority of patients. PAS-LAR induced a significant PEGV sparing effect, but this was at the expense of a higher incidence of diabetes. This extension study until 48-weeks assesses the efficacy, safety and quali...

Background: Previous studies indicate that PAS-LAR can achieve control of insulin-like growth factor I (IGF-I) levels and may reduce tumor size, however a subset of acromegaly patients responds poorly. T2-signal intensity, somatostatin receptor (SST) subtype 2 and 5 expression, and the response to first-generation somatostatin receptor ligands (SRLs) are recognized predictors of therapy response. Valid prediction of the response to PAS-LAR can alter treatment stratification.</...

Objective: MRI T2-signal intensity and somatostatin (SST) receptor expression are recognized predictors of therapy response in acromegaly. We investigate the relationship between these predictors and the hormonal and tumor responses to PAS-LAR therapy, and compare to first-generation somatostatin receptor ligands (SRLs) responsiveness.Methods: We included 45 acromegalics initially receiving SRLs, followed by a combination therapy including pegvisomant (P...