PMID- 23242861 OWN - NLM STAT- MEDLINE DCOM- 20130924 LR - 20211021 IS - 1573-0646 (Electronic) IS - 0167-6997 (Print) IS - 0167-6997 (Linking) VI - 31 IP - 2 DP - 2013 Apr TI - A Phase I, open-label, dose-escalation study of continuous once-daily oral treatment with afatinib in patients with advanced solid tumors. PG - 409-16 LID - 10.1007/s10637-012-9904-9 [doi] AB - BACKGROUND: This trial evaluated the safety, tolerability and maximum tolerated dose (MTD) of afatinib, a novel ErbB Family Blocker. METHODS: In this open-label, dose-escalation Phase I study, afatinib was administered continuously, orally, once-daily for 28 days to patients with advanced or metastatic solid tumors. Dose escalation was performed in a 3 + 3 design, with a starting dose of 10 mg/day (d); doses were doubled for each successive cohort until the MTD was defined. The MTD cohort was expanded to a total of 19 patients. Incidence and severity of adverse events (AEs), antitumor activity and pharmacokinetics were assessed. RESULTS: Thirty patients received at least one dose of afatinib. Twenty-nine patients were evaluable for response. Dose-limiting toxicities (DLTs) consisting of Grade 3 diarrhea were observed in two out of three patients treated at 60 mg/d. The MTD was determined at 40 mg/d. The most frequent treatment-related AEs were diarrhea and mucosal inflammation reported in 76.7% and 43.3% of patients respectively. Five patients had stable disease with a median progression-free survival of 111 days. No objective responses occurred. Pharmacokinetic data showed no deviation from dose-proportionality and steady-state was reached on Day 8 at the latest. CONCLUSIONS: Afatinib was well tolerated with manageable side effects when administered once-daily, continuously at a dose of 40 mg. FAU - Gordon, Michael S AU - Gordon MS AD - Pinnacle Oncology Hematology, 9055 E Del Camino, Suite 100, Scottsdale, AZ 85258, USA. mgordon@azpoh.com FAU - Mendelson, David S AU - Mendelson DS FAU - Gross, Mitchell AU - Gross M FAU - Uttenreuther-Fischer, Martina AU - Uttenreuther-Fischer M FAU - Ould-Kaci, Mahmoud AU - Ould-Kaci M FAU - Zhao, Yihua AU - Zhao Y FAU - Stopfer, Peter AU - Stopfer P FAU - Agus, David B AU - Agus DB LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20121215 PL - United States TA - Invest New Drugs JT - Investigational new drugs JID - 8309330 RN - 0 (Quinazolines) RN - 41UD74L59M (Afatinib) SB - IM MH - Administration, Oral MH - Adult MH - Afatinib MH - Aged MH - Aged, 80 and over MH - Cohort Studies MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Maximum Tolerated Dose MH - Middle Aged MH - Neoplasms/*drug therapy MH - Prognosis MH - Quinazolines/*pharmacokinetics/*therapeutic use MH - Tissue Distribution PMC - PMC3589633 EDAT- 2012/12/18 06:00 MHDA- 2013/09/26 06:00 PMCR- 2012/12/15 CRDT- 2012/12/18 06:00 PHST- 2012/10/22 00:00 [received] PHST- 2012/11/07 00:00 [accepted] PHST- 2012/12/18 06:00 [entrez] PHST- 2012/12/18 06:00 [pubmed] PHST- 2013/09/26 06:00 [medline] PHST- 2012/12/15 00:00 [pmc-release] AID - 9904 [pii] AID - 10.1007/s10637-012-9904-9 [doi] PST - ppublish SO - Invest New Drugs. 2013 Apr;31(2):409-16. doi: 10.1007/s10637-012-9904-9. Epub 2012 Dec 15.