Reference Detail

Ref Type

Journal Article

PMID

(28031425)

Authors

Abramson VG, Supko JG, Ballinger T, Cleary JM, Hilton JF, Tolaney SM, Chau NG, Cho DC, Pearlberg J, Lager J, Shapiro GI, Arteaga CL

Title

Phase Ib Study of Safety and Pharmacokinetics of the PI3K Inhibitor SAR245408 with the HER3-Neutralizing Human Antibody SAR256212 in Patients with Solid Tumors.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research	23	14	2017 Jul 15	3520-3528	Clin Cancer Res

URL

Abstract Text

Purpose: This phase Ib study was designed to determine the MTD, safety, preliminary efficacy, and pharmacokinetics of the HER3 (ErbB3) mAb SAR256212 in combination with the oral PI3K inhibitor SAR245408 for patients with metastatic or locally advanced solid tumors.Experimental Design: Patients received the combination of intravenous SAR256212 and oral SAR245408 in a 3 + 3 dose-escalation design until occurrence of disease progression or dose-limiting toxicity. Objective response rate, pharmacokinetics, pharmacodynamics, and PIK3CA mutational status were also evaluated.Results: Twenty-seven patients were enrolled. Thirteen of 20 patients tested (65%) had a hotspot-activating mutation in PIK3CA in their tumor. The MTD was determined to be SAR256212 at 40 mg/kg loading dose followed by 20 mg/kg weekly, plus SAR245408 200 mg daily. Dose-limiting toxicities included rash and hypotension; the most frequent treatment-related side effect was diarrhea (66.7%). Twenty-three patients were evaluable for efficacy, of which 12 patients (52.2%) had stable disease and 11 patients (47.8%) had progression of disease as best response. In this study with a limited sample size, there was no difference in best response between patients with PI3KCA-mutant versus PIK3CA wild-type tumors (P = 0.07). The concurrent administration of SAR245408 and SAR256212 did not appear to have an effect on the pharmacokinetics of either drug.Conclusions: The combination of SAR256212 and SAR245408 resulted in stable disease as the best response. Side effects seen in combination were similar to the profiles of each individual drug. Patient outcome was the same regardless of tumor PI3KCA mutation status. Clin Cancer Res; 23(14); 3520-8. ©2016 AACR.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References