{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,5]],"date-time":"2026-09-05T01:36:36Z","timestamp":1788572196986,"version":"build-2803163510"},"reference-count":30,"publisher":"Wiley","issue":"22","license":[{"start":{"date-parts":[[2022,10,1]],"date-time":"2022-10-01T00:00:00Z","timestamp":1664582400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["acsjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cancer"],"published-print":{"date-parts":[[2022,11,15]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Imatinib treatment often produces various adverse reactions in patients with chronic myeloid leukemia (CML), and increasing patients are pursuing dose optimization. In this study, the authors aimed to explore imatinib dose optimization based on therapeutic drug monitoring (TDM) in CML patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The relationship between imatinib concentration and clinical response and adverse reactions was evaluated, then the dose\u2010reduction data in 110 Chinese CML patients was also explored.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Patients with a major molecular response (MMR) had higher imatinib plasma concentration compared with those not achieving MMR (1473.70\u00a0\u00b1\u00a0419.13 vs. 985.8\u00a0\u00b1\u00a0213.32\u00a0ng\/ml) when receiving 400\u00a0mg daily. Imatinib concentration &gt;1000\u00a0ng\/ml predicted improved event\u2010free survival and failure\u2010free survival. In addition, imatinib concentration was significantly correlated with leukopenia or neutropenia, diarrhea, edema, and rash. Patients receiving imatinib concentration &gt;1685\u00a0ng\/ml were more susceptible to diarrhea and those with levels &gt;1575\u00a0ng\/ml were more susceptible to periorbital and limb edema. Thirty\u2010nine (35.5%) patients underwent low\u2010dose therapy and seven (6.4%) patients received discontinuation therapy. Patients with a higher imatinib concentration were more likely to maintain MMR or deep molecular response after dose reduction. No significant difference in molecular relapse\u2010free survival rate was observed between the low\u2010dose and standard\u2010dose groups over 1\u00a0year and 2\u00a0years. Furthermore, most adverse reactions significantly improved after dose reduction.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Imatinib concentration was closely associated with clinical response and adverse reactions, suggesting that dose optimization based on TDM might achieve beneficial clinical outcomes. Dose reduction based on TDM is feasible and safe for patients exhibiting optimal response, which could improve adverse reactions.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cncr.34478","type":"journal-article","created":{"date-parts":[[2022,10,1]],"date-time":"2022-10-01T11:13:25Z","timestamp":1664622805000},"page":"3951-3958","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Imatinib dose optimization based on therapeutic drug monitoring in Chinese patients with chronic\u2010phase chronic myeloid leukemia"],"prefix":"10.1002","volume":"128","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2257-6847","authenticated-orcid":false,"given":"Fang","family":"Cheng","sequence":"first","affiliation":[{"name":"Department of Pharmacy Union Hospital Tongji Medical College Huazhong University of Science and Technology  Wuhan China"},{"name":"Hubei Province Clinical Research Center for Precision Medicine for Critical Illness  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