146146-156

Phase I/II safety and antitumor activity of nivolumab in patients with advanced hepatocellular carcinoma (HCC): CA209-040.

Category: 
Developmental Therapeutics—Immunotherapy
Session Type and Session Title: 
Clinical Science Symposium, Immunotherapy for Every Patient: Check Your Enthusiasm
Abstract Number: 

LBA101

Citation: 
J Clin Oncol 33, 2015 (suppl; abstr LBA101)
Author(s): 
Anthony B. El-Khoueiry, Ignacio Melero, Todd S. Crocenzi, Theodore Hobart Welling, Thomas Cheung Yau, Winnie Yeo, Akhil Chopra, Joseph Grosso, Lixin Lang, Jeffrey Anderson, Christine Marie Dela Cruz, Bruno Sangro; University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA; Clinica Universidad de Navarra and CIBERehd, Pamplona, Spain; Providence Cancer Center, Portland, OR; University of Michigan, Ann Arbor, MI; University of Hong Kong, Hong Kong, China; Johns Hopkins Singapore International Medical Centre, Singapore, Singapore; Bristol-Myers Squibb, Princeton, NJ

Abstract Disclosures

Abstract: 

Background: Overexpression of PD-L1 in HCC has a poor prognosis. Safety and preliminary antitumor efficacy of nivolumab, a fully human IgG4 monoclonal antibody PD-1 inhibitor, was evaluated in a multiple ascending-dose, phase I/II study in patients (pts) with HCC. Methods: Pts with histologically confirmed advanced HCC with Child-Pugh (CP) score ≤ B7 and progressive disease (PD) on, intolerant of, or refusing sorafenib were enrolled. Dose escalation occurred in parallel cohorts based on etiology: no active hepatitis virus infection or virus-infected HCC pts. Pts received nivolumab 0.1 – 10 mg/kg intravenously for up to two years. The primary endpoint was safety. Secondary endpoints included antitumor activity using mRECIST criteria, pharmacokinetics, and immunogenicity. Results: The study has enrolled 41 pts with a CP score of 5 (n = 35) or 6 (n = 6), ECOG score of 0 (n = 26) or 1 (n = 15), 73% with extrahepatic metastasis and/or portal vein invasion, and 77% with prior sorafenib use. Eighteen pts remain on study, and 23 discontinued treatment due to PD (n = 17), complete response (CR; n = 2), drug-related adverse events (AEs; n = 2) and non-drug–related AEs (n = 2). Drug-related AEs of any grade occurred in 29 pts (71%; 17% grade 3/4), with ≥ 10% of pts experiencing aspartate aminotransferase (AST) increase and rash (each 17%), alanine aminotransferase(ALT) and lipase increase (each 15%), and amylase increase (12%). Grade 3 and 4 AEs ≥ 5% were AST increase (12%), ALT increase (10%) and lipase increase (5%). A dose-limiting toxicity occurred in an uninfected pt at 10 mg/kg; no maximum tolerated dose was defined in any cohort. Response was evaluable in 39 pts: 2 CR (5%) and 7 partial responses (PR; 18%). Response duration was 14–17+ months for CR, < 1–8+ months for PR, and 1.5–17+ months for stable disease (SD). Overall survival (OS) rate at 6 months is 72%. Conclusions: Nivolumab has a manageable AE profile and produced durable responses across all dose levels and HCC cohorts, with a favorable 6-month OS rate. Updated safety, antitumor activity, and biomarker data will be presented. Clinical trial information: NCT01658878

Best overall response.

Uninfected
(n = 20)
Viral infected
(n = 19)
Total
(N = 39)
CR (n)202
PR (n)167
SD (n)12618
PD (n)5712