PMID- 29577674 OWN - NLM STAT- MEDLINE DCOM- 20190906 LR - 20240314 IS - 2045-7634 (Electronic) IS - 2045-7634 (Linking) VI - 7 IP - 5 DP - 2018 May TI - A phase 4 study of nilotinib in Korean patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase: ENESTKorea. PG - 1814-1823 LID - 10.1002/cam4.1450 [doi] AB - Although nilotinib has improved efficacy compared to imatinib, suboptimal response and intolerable adverse events (AEs) limit its effectiveness in many patients with chronic myeloid leukemia in chronic phase (CML-CP). We investigated the 2-year efficacy and safety of nilotinib and their relationships with plasma nilotinib concentrations (PNCs). In this open-label, multi-institutional phase 4 study, 110 Philadelphia chromosome-positive CML-CP patients were treated with nilotinib at a starting dose of 300 mg twice daily. Molecular responses (MRs) and AEs were monitored for up to 24 months. The 24-month cumulative MR(4.5) rate was evaluated as the primary endpoint. Plasma samples were collected from 94 patients to determine PNCs, and the per-patient mean was used to categorize them into four mean PNC (MPNC) groups. Cumulative MR rates and safety were compared between groups. With a median follow-up of 22.2 months, the 24-month cumulative MR(4.5) rate was 56.2% (95% confidence interval, 44.0%-8.3%), and the median time to MR(4.5) was 23.3 months. There were no significant differences in the cumulative rates of major molecular response, MR(4) , and MR(4.5) between MPNC groups. One patient died due to acute viral hepatitis, and two developed hematological or cytogenetic relapse, while no progression to accelerated or blast phase was observed. Safety results were consistent with previous studies with no new safety signal identified. Across the MPNC groups, there was no significant linear trend in the frequency of AEs. Nilotinib is highly effective for the treatment of CML-CP with manageable AEs. The measurement of PNC has no predictive value for patient outcomes and is thus not found to be clinically useful. This study is registered with clinicaltrials.gov, Number NCT03332511. CI - (c) 2018 The Authors. Cancer Medicine published by John Wiley & Sons Ltd. FAU - Shin, Junghoon AU - Shin J AUID- ORCID: 0000-0002-6834-7217 AD - Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. FAU - Koh, Youngil AU - Koh Y AD - Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. FAU - Yoon, Seo Hyun AU - Yoon SH AD - Department of Clinical Pharmacology and Therapeutics, Seoul National University Hospital, Seoul, Korea. FAU - Cho, Joo-Youn AU - Cho JY AD - Department of Clinical Pharmacology and Therapeutics, Seoul National University Hospital, Seoul, Korea. FAU - Kim, Dae-Young AU - Kim DY AD - Department of Internal Medicine, Asan Medical Center, Seoul, Korea. FAU - Lee, Kyoo-Hyung AU - Lee KH AD - Department of Internal Medicine, Asan Medical Center, Seoul, Korea. FAU - Kim, Hyeong-Joon AU - Kim HJ AD - Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea. FAU - Ahn, Jae-Sook AU - Ahn JS AD - Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea. FAU - Kim, Yeo-Kyeoung AU - Kim YK AD - Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea. FAU - Park, Jinny AU - Park J AD - Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea. FAU - Sohn, Sang-Kyun AU - Sohn SK AD - Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea. FAU - Moon, Joon Ho AU - Moon JH AD - Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea. FAU - Lee, Yoo Jin AU - Lee YJ AD - Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea. FAU - Yoon, Seonghae AU - Yoon S AD - Clinical Trials Center, Seoul National University Bundang Hospital, Seongnam, Korea. FAU - Lee, Jeong-Ok AU - Lee JO AD - Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea. FAU - Cheong, June-Won AU - Cheong JW AD - Department of Internal Medicine, Severance Hospital, Seoul, Korea. FAU - Kim, Kyoung Ha AU - Kim KH AD - Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea. FAU - Kim, Sung-Hyun AU - Kim SH AD - Department of Internal Medicine, Dong-A University Hospital, Busan, Korea. FAU - Kim, Hoon-Gu AU - Kim HG AD - Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea. FAU - Kim, Hawk AU - Kim H AD - Department of Internal Medicine, Ulsan University Hospital, Ulsan, Korea. FAU - Nam, Seung-Hyun AU - Nam SH AD - Department of Internal Medicine, VHS Medical Center, Seoul, Korea. FAU - Do, Young Rok AU - Do YR AD - Department of Internal Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea. FAU - Park, Sang-Gon AU - Park SG AD - Department of Internal Medicine, Chosun University Hospital, Gwangju, Korea. FAU - Park, Seong Kyu AU - Park SK AD - Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea. FAU - Bae, Sung Hwa AU - Bae SH AD - Department of Internal Medicine, Daegu Catholic University Medical Center, Daegu, Korea. FAU - Song, Hun Ho AU - Song HH AD - Department of Internal Medicine, Kangdong Sacred Heart Hospital, Seoul, Korea. FAU - Shin, Dong-Yeop AU - Shin DY AUID- ORCID: 0000-0003-1753-8846 AD - Department of Internal Medicine, Korea Cancer Center Hospital, Seoul, Korea. FAU - Oh, Doyeun AU - Oh D AUID- ORCID: 0000-0002-6981-3144 AD - Department of Internal Medicine, CHA Bundang Medical Center, Seongnam, Korea. FAU - Kim, Min Kyoung AU - Kim MK AD - Department of Internal Medicine, Yeungnam University Medical Center, Daegu, Korea. FAU - Jung, Chul Won AU - Jung CW AD - Department of Internal Medicine, Samsung Medical Center, Seoul, Korea. FAU - Park, Seonyang AU - Park S AD - Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. FAU - Kim, Inho AU - Kim I AD - Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. LA - eng SI - ClinicalTrials.gov/NCT03332511 PT - Clinical Trial, Phase IV PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20180325 PL - United States TA - Cancer Med JT - Cancer medicine JID - 101595310 RN - 0 (Pyrimidines) RN - F41401512X (nilotinib) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Chromatography, Liquid MH - Drug Administration Schedule MH - Female MH - Humans MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/*drug therapy MH - Male MH - Middle Aged MH - Pyrimidines/*administration & dosage/adverse effects/*pharmacokinetics MH - Republic of Korea MH - Tandem Mass Spectrometry MH - Treatment Outcome PMC - PMC5943463 OTO - NOTNLM OT - CML OT - molecular response OT - nilotinib OT - prognosis EDAT- 2018/03/27 06:00 MHDA- 2019/09/07 06:00 PMCR- 2018/03/25 CRDT- 2018/03/27 06:00 PHST- 2017/11/06 00:00 [received] PHST- 2018/02/12 00:00 [revised] PHST- 2018/02/26 00:00 [accepted] PHST- 2018/03/27 06:00 [pubmed] PHST- 2019/09/07 06:00 [medline] PHST- 2018/03/27 06:00 [entrez] PHST- 2018/03/25 00:00 [pmc-release] AID - CAM41450 [pii] AID - 10.1002/cam4.1450 [doi] PST - ppublish SO - Cancer Med. 2018 May;7(5):1814-1823. doi: 10.1002/cam4.1450. Epub 2018 Mar 25.