Reference Detail

Ref Type

Journal Article

PMID

(31142504)

Authors

Harding JJ, Zhu AX, Bauer TM, Choueiri TK, Drilon A, Voss MH, Fuchs CS, Abou-Alfa GK, Wijayawardana SR, Wang XA, Moser BA, Uruñuela A, Wacheck V, Bendell JC

Title

A Phase Ib/II Study of Ramucirumab in Combination with Emibetuzumab in Patients with Advanced Cancer.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research	25	17	2019 Sep 01	5202-5211	Clin Cancer Res

URL

Abstract Text

Inhibition of the VEGFR-2 blocks angiogenesis and attenuates tumor growth, but cancers may evade this effect through activation of the hepatocyte growth factor receptor MET. Here we report results of the phase Ib/II study of ramucirumab, a monoclonal anti-VEGFR-2 antibody, plus the anti-MET mAb emibetuzumab.A 3+3 dose escalation of emibetuzumab plus ramucirumab (phase Ib) was followed by tumor-specific expansion cohorts. Primary objectives were to determine the recommended phase II dose and to evaluate antitumor activity. Secondary objectives included safety, pharmacokinetics, and immunogenicity. Tumoral MET expression was explored by immunohistochemistry (IHC).A total of 97 patients with solid tumor [6 phase Ib, 16 gastric or gastroesophageal junction adenocarcinoma, 45 hepatocellular carcinoma (HCC), 15 renal cell carcinoma, and 15 non-small lung cancer] received emibetuzumab at 750 or 2,000 mg flat dosing plus ramucirumab at 8 mg/kg every 2 weeks. No dose-limiting toxicities were observed. Common adverse events were primarily mild or moderate and included fatigue (36.1%), peripheral edema (28.9%), and nausea (14.4%). Emibetuzumab exposures were similar as in previous studies with no apparent drug-drug interactions. Five partial responses (5.2%) were observed across all tumor types. The greatest antitumor activity was noted in HCC with a 6.7% overall response rate, 60% disease control rate, and 5.42 months (95% confidence interval, 1.64-8.12) progression-free survival (PFS). HCC with high MET expression showed improved PFS with approximately 3-fold increase in PFS (8.1 vs. 2.8 months) relative to low MET expression.Ramucirumab plus emibetuzumab was safe and exhibited cytostatic antitumor activity. MET expression may help to select patients benefitting most from this combination treatment in select tumor types.

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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