Volume 28, Issue 2 pp. 82-88
Research Article

Dynamic change of T315I BCR-ABL kinase domain mutation in Korean chronic myeloid leukaemia patients during treatment with Abl tyrosine kinase inhibitors

Wan-Seok Kim

Wan-Seok Kim

Molecular Genetic Research Institute, The Catholic University of Korea, Seoul, Korea

These authors contributed equally to this work.

Search for more papers by this author
Dongho Kim

Dongho Kim

Molecular Genetic Research Institute, The Catholic University of Korea, Seoul, Korea

These authors contributed equally to this work.

Search for more papers by this author
Dong-Wook Kim

Corresponding Author

Dong-Wook Kim

Molecular Genetic Research Institute, The Catholic University of Korea, Seoul, Korea

Division of Hematology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea

Division of Hematology, Seoul St. Mary's Hospital, The Catholic University of Korea, 505 Banpo-dong, Seocho gu, Seoul, Korea.Search for more papers by this author
Il-Young Kweon

Il-Young Kweon

Division of Hematology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea

Search for more papers by this author
Soo-Hyun Kim

Soo-Hyun Kim

Molecular Genetic Research Institute, The Catholic University of Korea, Seoul, Korea

Search for more papers by this author
Hyun-Gyung Goh

Hyun-Gyung Goh

Molecular Genetic Research Institute, The Catholic University of Korea, Seoul, Korea

Search for more papers by this author
Sa-Hee Park

Sa-Hee Park

Division of Hematology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea

Search for more papers by this author
Jeong Lee

Jeong Lee

Molecular Genetic Research Institute, The Catholic University of Korea, Seoul, Korea

Search for more papers by this author
First published: 18 September 2009
Citations: 10

Abstract

We analysed the dynamic change of imatinib-resistant mutations in BCR-ABL kinase domain focusing on T315I mutation during dasatinib or nilotinib therapy. Fifty-five imatinib-resistant chronic myeloid leukaemia patients (32 patients with imatinib-resistant mutations and 23 patients without mutation) in different disease phases were treated with dasatinib (median 17.3 months) or nilotinib (median 6.8 months). Among the 32 patients with baseline mutation, mutations including M244V, G250E, E255K, M351T, H396R, S417Y, E450K and E459K disappeared in 8 patients and new mutations were detected in 9 patients, all of which were T315I. Among the 23 patients without baseline mutation, 4 patients showed newly developed mutations including T315I, T315I + E459K, M244V and F359V. The T315I was the most frequently detected mutation in imatinib therapy (16%, 9 of 55) as well as in dasatinib or nilotinib therapy (24%, 11 of 44). Patients with imatinib resistant baseline mutations had a higher rate of mutation development during dasatinib or nilotinib treatment compared to patients without baseline mutations (28% vs. 17%). Copyright © 2009 John Wiley & Sons, Ltd.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.