Jean-Luc Raoul1, Joong-Won Park2, Yoon-Koo Kang3, Richard S Finn4, Jun Suk Kim5, Winnie Yeo6, Blasé N Polite7, Yee Chao8, Ian Walters9, Christine Baudelet10, Riccardo Lencioni11. 1. Département d'Oncologie Médicale, Institut Paoli-Calmettes, Marseille, France. 2. National Cancer Center, Goyang, Republic of Korea. 3. Asan Medical Center, Seoul, Republic of Korea. 4. Geffen School of Medicine, UCLA, Los Angeles, Calif., USA. 5. Korea University Guro Hospital, Seoul, Republic of Korea. 6. The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China. 7. The University of Chicago Medical Center, Chicago, Ill., USA. 8. Veterans General Hospital, Taiwan, Republic of China. 9. Bristol-Myers Squibb, Princeton, N.J., USA. 10. Bristol-Myers Squibb, Braine l'Alleud, Belgium. 11. Pisa University Hospital, Pisa, Italy.
Abstract
BACKGROUND AND AIMS: Assessing treatment responses in hepatocellular carcinoma (HCC) is challenging, and alternative radiologic methods of measuring treatment response are required. Modified Response Evaluation Criteria in Solid Tumors (mRECIST) for HCC and alpha-fetoprotein (AFP) levels were assessed in a post hoc analysis of a phase II study of brivanib, a selective dual inhibitor of fibroblast growth factor and vascular endothelial growth factor signaling. METHODS: HCC patients were treated with first-line (cohort A; n = 55) or second-line (cohort B; n = 46) brivanib alaninate 800 mg once daily. Outcomes were compared between World Health Organization (WHO) criteria and (retrospectively by) mRECIST by independent review. The relationship between on-study AFP changes and outcome was analyzed in patients with elevated AFP at baseline. RESULTS: Response rates were higher with mRECIST versus WHO criteria in cohorts A (25.5% vs. 7.3%) and B (10.9% vs. 4.3%). Progressive disease (PD) as assessed by mRECIST was associated with a very short median overall survival (OS; cohort A, 2.8 months; cohort B, 5.3 months); PD as assessed by WHO criteria reflected a mixed population of patients with better outcomes. mRECIST responders tended to have a>50% AFP decrease during therapy. In cohorts A and B pooled, an early AFP response (>20%or >50% decline from baseline within the first 4 weeks) was not associated with longer median OS. CONCLUSIONS: Tumor response as assessed by mRECIST differed from that by WHO criteria, with mRECIST possibly identifying true nonresponders with a poor prognosis. Many patients had AFP decreases correlating with tumor shrinkage, yet an association with long-term benefit was unclear. mRECIST and on-treatment AFP levels are being explored further with brivanib in HCC.
BACKGROUND AND AIMS: Assessing treatment responses in hepatocellular carcinoma (HCC) is challenging, and alternative radiologic methods of measuring treatment response are required. Modified Response Evaluation Criteria in Solid Tumors (mRECIST) for HCC and alpha-fetoprotein (AFP) levels were assessed in a post hoc analysis of a phase II study of brivanib, a selective dual inhibitor of fibroblast growth factor and vascular endothelial growth factor signaling. METHODS: HCC patients were treated with first-line (cohort A; n = 55) or second-line (cohort B; n = 46) brivanib alaninate 800 mg once daily. Outcomes were compared between World Health Organization (WHO) criteria and (retrospectively by) mRECIST by independent review. The relationship between on-study AFP changes and outcome was analyzed in patients with elevated AFP at baseline. RESULTS: Response rates were higher with mRECIST versus WHO criteria in cohorts A (25.5% vs. 7.3%) and B (10.9% vs. 4.3%). Progressive disease (PD) as assessed by mRECIST was associated with a very short median overall survival (OS; cohort A, 2.8 months; cohort B, 5.3 months); PD as assessed by WHO criteria reflected a mixed population of patients with better outcomes. mRECIST responders tended to have a>50% AFP decrease during therapy. In cohorts A and B pooled, an early AFP response (>20%or >50% decline from baseline within the first 4 weeks) was not associated with longer median OS. CONCLUSIONS:Tumor response as assessed by mRECIST differed from that by WHO criteria, with mRECIST possibly identifying true nonresponders with a poor prognosis. Many patients had AFP decreases correlating with tumor shrinkage, yet an association with long-term benefit was unclear. mRECIST and on-treatment AFP levels are being explored further with brivanib in HCC.
Entities:
Keywords:
Alpha-fetoprotein; Brivanib; Hepatocellular carcinoma; WHO criteria; mRECIST
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