PMID- 26254023 OWN - NLM STAT- MEDLINE DCOM- 20151217 LR - 20181202 IS - 1432-0843 (Electronic) IS - 0344-5704 (Linking) VI - 76 IP - 4 DP - 2015 Oct TI - Phase I trial of afatinib plus vinorelbine in Japanese patients with advanced solid tumors, including breast cancer. PG - 739-50 LID - 10.1007/s00280-015-2826-4 [doi] AB - PURPOSE: This phase I trial assessed afatinib, an irreversible ErbB family blocker, plus vinorelbine in Japanese patients with advanced solid tumors not amenable to standard treatment. METHODS: Primary objectives were evaluation of safety and the maximum tolerated dose (MTD) of once-daily (QD) afatinib plus weekly intravenous vinorelbine. Secondary objectives included pharmacokinetic assessments and preliminary efficacy. Dose finding utilized a 3 + 3 design, with a starting dose of afatinib 20 mg QD plus vinorelbine 25 mg/m(2) weekly. RESULTS: Seventeen patients were enrolled. Dose level 2 (afatinib 40 mg and vinorelbine 25 mg/m(2)) exceeded the MTD; dose-limiting toxicities (DLTs) were considered vinorelbine-related. Dose finding continued with modified dose levels; dose level 2a: afatinib 40 mg and a reduced dose of vinorelbine 20 mg/m(2) and dose level 3: afatinib 40 mg and vinorelbine 25 mg/m(2) allowing omission of vinorelbine for grade >/=2 neutropenia/thrombocytopenia and afatinib dose modification for adverse events (AEs). At dose level 3, 1/6 patients had a DLT (upper abdominal pain requiring afatinib dose reduction). Overall, the most frequent treatment-related AEs (any/grade 3 and 4) were: neutropenia (100/71 %), leukopenia (100/59 %), diarrhea (94/0 %), anemia (71/12 %) and stomatitis (65/0 %). Two patients with breast cancer achieved a partial response; eight patients (various cancer indications) had stable disease. Pharmacokinetic analyses suggested no relevant drug-drug interactions. CONCLUSIONS: Afatinib 40 mg QD plus vinorelbine 25 mg/m(2) weekly was tolerated in Japanese patients when dose modifications for known AEs for either compound were allowed. Tumor shrinkage was also observed. This dose schedule was recommended for phase II/III trials in Japanese patients. FAU - Mukai, Hirofumi AU - Mukai H AD - Division of Oncology/Hematology, National Cancer Center Hospital East, Kashiwa, Japan. hrmukai@east.ncc.go.jp. FAU - Masuda, Norikazu AU - Masuda N AD - Department of Surgery, Breast Oncology, Osaka National Hospital, Osaka, Japan. FAU - Ishiguro, Hiroshi AU - Ishiguro H AD - Outpatient Oncology Unit, Kyoto University Hospital, Kyoto, Japan. FAU - Mitsuma, Ayako AU - Mitsuma A AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan. FAU - Shibata, Takashi AU - Shibata T AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan. FAU - Yamamura, Jun AU - Yamamura J AD - Department of Mammary Gland and Internal Secretion Surgery, Sakai City Hospital, Sakai, Japan. FAU - Toi, Masakazu AU - Toi M AD - Department of Breast Surgery, Kyoto University Hospital, Kyoto, Japan. FAU - Watabe, Aiko AU - Watabe A AD - Clinical Trial Management Department, Nippon Boehringer Ingelheim Co. Ltd., Tokyo, Japan. FAU - Sarashina, Akiko AU - Sarashina A AD - Clinical PK/PD Department, Nippon Boehringer Ingelheim Co. Ltd., Kobe, Hyogo, Japan. FAU - Uttenreuther-Fischer, Martina AU - Uttenreuther-Fischer M AD - TA Oncology, Boehringer Ingelheim Pharma GmbH and Co. KG, Biberach, Germany. FAU - Ando, Yuichi AU - Ando Y AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan. LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20150808 PL - Germany TA - Cancer Chemother Pharmacol JT - Cancer chemotherapy and pharmacology JID - 7806519 RN - 0 (Antineoplastic Agents) RN - 0 (Antineoplastic Agents, Phytogenic) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Quinazolines) RN - 41UD74L59M (Afatinib) RN - 5V9KLZ54CY (Vinblastine) RN - EC 2.7.10.1 (ErbB Receptors) RN - Q6C979R91Y (Vinorelbine) SB - IM MH - Adult MH - Afatinib MH - Aged MH - Antineoplastic Agents/administration & dosage/adverse effects/pharmacokinetics/therapeutic use MH - Antineoplastic Agents, Phytogenic/administration & dosage/adverse effects/pharmacokinetics/therapeutic use MH - Antineoplastic Combined Chemotherapy Protocols/administration & dosage/*adverse effects/pharmacokinetics/therapeutic use MH - Breast Neoplasms/blood/drug therapy/pathology MH - Cohort Studies MH - Dose-Response Relationship, Drug MH - Drug Monitoring MH - ErbB Receptors/*antagonists & inhibitors MH - Female MH - Humans MH - Japan MH - Leukopenia/chemically induced MH - Male MH - Middle Aged MH - Neoplasms/blood/*drug therapy/pathology MH - Patient Dropouts MH - Protein Kinase Inhibitors/administration & dosage/*adverse effects/pharmacokinetics/therapeutic use MH - Quinazolines/administration & dosage/*adverse effects/pharmacokinetics/therapeutic use MH - Tumor Burden/drug effects MH - Vinblastine/administration & dosage/adverse effects/*analogs & derivatives/pharmacokinetics/therapeutic use MH - Vinorelbine OTO - NOTNLM OT - Afatinib OT - Dose escalation OT - Japanese OT - Phase I OT - Vinorelbine EDAT- 2015/08/09 06:00 MHDA- 2015/12/19 06:00 CRDT- 2015/08/09 06:00 PHST- 2015/06/22 00:00 [received] PHST- 2015/07/09 00:00 [accepted] PHST- 2015/08/09 06:00 [entrez] PHST- 2015/08/09 06:00 [pubmed] PHST- 2015/12/19 06:00 [medline] AID - 10.1007/s00280-015-2826-4 [pii] AID - 10.1007/s00280-015-2826-4 [doi] PST - ppublish SO - Cancer Chemother Pharmacol. 2015 Oct;76(4):739-50. doi: 10.1007/s00280-015-2826-4. Epub 2015 Aug 8.