PMID- 33569303 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220420 IS - 2218-6751 (Print) IS - 2226-4477 (Electronic) IS - 2218-6751 (Linking) VI - 10 IP - 1 DP - 2021 Jan TI - Phase I study of afatinib plus bevacizumab in patients with advanced non-squamous non-small cell lung cancer harboring EGFR mutations. PG - 183-192 LID - 10.21037/tlcr-20-824 [doi] AB - BACKGROUND: Afatinib is a second-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI). Combination therapies with first-generation EGFR-TKIs and bevacizumab have been reported to prolong progression-free survival (PFS). However, there are few data on the combination of afatinib and bevacizumab. METHODS: In this phase I trial, we evaluated the safety of afatinib plus bevacizumab in patients with advanced non-squamous non-small cell lung cancer (NSCLC) harboring EGFR mutations. This study consisted of two cohorts. In the dose-finding cohort, enrolled patients were treated with afatinib at a dose of 20, 30, or 40 mg/day (days 1-21) plus bevacizumab at a dose of 15 mg/kg (day 1) in 21-day cycles. This cohort was performed according to a 3 + 3 manner. In the expansion cohort, enrolled patients received the recommended dose (RD) based on the results of the dose-finding cohort. The serum trough concentration of afatinib was determined at the steady state. RESULTS: Seventeen patients were enrolled in this study (6 patients in the dose-finding cohort and 11 patients in the expansion cohort). There were no dose-limiting toxicities (DLTs) with afatinib at a dose of 30 mg/day. With afatinib at a dose of 40 mg/day, two of two patients experienced DLTs (grade 3 diarrhea) in cycle 1. With these results, afatinib at a dose of 30 mg/day plus bevacizumab at a dose of 15 mg/kg was determined as the RD. Eleven patients in the expansion cohort were treated with the RD. Common treatment-related adverse events (AEs) with the RD were diarrhea (79%), rash (71%), perionychia (64%), and stomatitis (50%). Grade 3 AEs with the RD were diarrhea (7%), perionychia (7%), and hypertension (7%). There were no grade 4/5 AEs or cases of interstitial lung disease. Dose-proportional increases in serum afatinib trough concentrations at steady state were not observed. The response rates (RRs) and disease control rates were 55% and 100% in EGFR-TKI-naive patients. Re-biopsy was performed in eight patients after progressive disease following the study treatment, and three patients acquired a T790M mutation. CONCLUSIONS: Afatinib at a dose of 30 mg/day plus bevacizumab at a dose of 15 mg/kg q3w is well tolerated. CI - 2021 Translational Lung Cancer Research. All rights reserved. FAU - Ko, Ryo AU - Ko R AD - Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan. FAU - Shukuya, Takehito AU - Shukuya T AD - Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan. FAU - Imamura, Chiyo K AU - Imamura CK AD - Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan. AD - Advanced Cancer Translational Research Institute, Showa University, Tokyo, Japan. FAU - Tokito, Takaaki AU - Tokito T AD - Division of Respiratory, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan. FAU - Shimada, Naoko AU - Shimada N AD - Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan. FAU - Koyama, Ryo AU - Koyama R AD - Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan. FAU - Yamada, Kazuhiko AU - Yamada K AD - Division of Respiratory, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan. FAU - Ishii, Hidenobu AU - Ishii H AD - Division of Respiratory, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan. FAU - Azuma, Koichi AU - Azuma K AD - Division of Respiratory, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan. FAU - Takahashi, Kazuhisa AU - Takahashi K AD - Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan. LA - eng PT - Journal Article PL - China TA - Transl Lung Cancer Res JT - Translational lung cancer research JID - 101646875 PMC - PMC7867760 OTO - NOTNLM OT - Afatinib OT - EGFR mutation OT - bevacizumab OT - non-small cell lung cancer (NSCLC) COIS- Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at http://dx.doi.org/10.21037/tlcr-20-824). RK reports grants and personal fees from Boehringer Ingelheim and AstraZeneca, personal fees from Taiho Pharmaceutical, Chugai Pharmaceutical, Ono Pharmaceutical, and Pfizer, outside the submitted work. TS reports grants and personal fee from MSD and Boehringer Ingelheim, personal fees from Nichi-Iko Pharmaceutical Co., Daiichi Sankyo, Ono Pharmaceutical, Bristol-Myers Squibb, Eli Lilly, Novartis, and Taiho Pharmaceutical, outside the submitted work. CKI reports personal fees from Chugai Pharmaceutical and Ono Pharmaceutical, outside the submitted work. TT reports personal fees from AstraZeneca, Chugai Pharmaceutical, MSD and Boehringer Ingelheim, outside the submitted work. KY reports personal fees from Chugai Pharmaceutical, outside the submitted work. HI reports grants and personal fees from Boehringer Ingelheim, personal fees from Ono Pharmaceutical, Chugai Pharmaceutical, AstraZeneca and MSD, outside the submitted work. KA reports personal fees from Chugai Pharmaceutical, AstraZeneca, Merck Sharp and Dohme, Bristol-Myers Squibb, and Ono Pharmaceutical, outside the submitted work. KT reports grants and personal fees from AstraZeneca, Boehringer Ingelheim, and Chugai Pharmaceutical, grants from MSD, and Bristol-Myers Squibb, personal fees from Eli Lilly, Astellas, Ono Pharmaceutical, Taiho Pharmaceutical, Shionogi, Novartis, Pfizer, Glaxo Smith Kline, and Actelion, outside the submitted work. The other authors have no conflicts of interest to declare. EDAT- 2021/02/12 06:00 MHDA- 2021/02/12 06:01 PMCR- 2021/01/01 CRDT- 2021/02/11 05:54 PHST- 2021/02/11 05:54 [entrez] PHST- 2021/02/12 06:00 [pubmed] PHST- 2021/02/12 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - tlcr-10-01-183 [pii] AID - 10.21037/tlcr-20-824 [doi] PST - ppublish SO - Transl Lung Cancer Res. 2021 Jan;10(1):183-192. doi: 10.21037/tlcr-20-824.