Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations

© 2018 Informa UK Limited, trading as Taylor & Francis Group Objectives: The primary objective was to determine the prevalence of calreticulin (CALR) mutation in patients with non-JAK2V617F mutated essential thrombocythemia (ET). The secondary objectives were to evaluate the accuracy of CALR m...

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Main Authors: Ekarat Rattarittamrong, Adisak Tantiworawit, Noppamas Kumpunya, Ornkamon Wongtagan, Ratchanoo Tongphung, Arunee Phusua, Chatree Chai-Adisaksopha, Sasinee Hantrakool, Thanawat Rattanathammethee, Lalita Norasetthada, Pimlak Charoenkwan, Suree Lekawanvijit
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043317270&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48476
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spelling th-cmuir.6653943832-484762018-04-25T10:12:51Z Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations Ekarat Rattarittamrong Adisak Tantiworawit Noppamas Kumpunya Ornkamon Wongtagan Ratchanoo Tongphung Arunee Phusua Chatree Chai-Adisaksopha Sasinee Hantrakool Thanawat Rattanathammethee Lalita Norasetthada Pimlak Charoenkwan Suree Lekawanvijit © 2018 Informa UK Limited, trading as Taylor & Francis Group Objectives: The primary objective was to determine the prevalence of calreticulin (CALR) mutation in patients with non-JAK2V617F mutated essential thrombocythemia (ET). The secondary objectives were to evaluate the accuracy of CALR mutation analysis by high-resolution melting (HRM) analysis and real-time polymerase chain reaction (PCR) compared with DNA sequencing and to compare clinical characteristics of CALR mutated and JAK2V617F mutated ET. Methods: This was a prospective cohort study involving ET patients registered at Chiang Mai University in the period September 2015–September 2017 who were aged more than 2 years, and did not harbor JAK2V617F mutation. The presence of CALR mutation was established by DNA sequencing, HRM, and real-time PCR for type 1 and type 2 mutation. Clinical data were compared with that from ET patients with mutated JAK2V617F. Results: Twenty-eight patients were enrolled onto the study. CALR mutations were found in 10 patients (35.7%). Three patients had type 1 mutation, 5 patients had type 2 mutation, 1 patient had type 18 mutation, and 1 patients had novel mutations (c.1093 C–G, c.1098_1131 del, c.1135 G–A). HRM could differentiate between the types of mutation in complete agreement with DNA sequencing. Patients with a CALR mutation showed a significantly greater male predominance and had a higher platelet count when compared with 42 JAK2V617F patients. Discussion and Conclusions: The prevalence of CALR mutation in JAK2V617F-negative ET in this study is 35.7%. HRM is an effective method of detecting CALR mutation and is a more advantageous method of screening for CALR mutation. 2018-04-25T10:12:51Z 2018-04-25T10:12:51Z 2018-03-10 Journal 16078454 10245332 2-s2.0-85043317270 10.1080/10245332.2018.1448699 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043317270&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/48476
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2018 Informa UK Limited, trading as Taylor & Francis Group Objectives: The primary objective was to determine the prevalence of calreticulin (CALR) mutation in patients with non-JAK2V617F mutated essential thrombocythemia (ET). The secondary objectives were to evaluate the accuracy of CALR mutation analysis by high-resolution melting (HRM) analysis and real-time polymerase chain reaction (PCR) compared with DNA sequencing and to compare clinical characteristics of CALR mutated and JAK2V617F mutated ET. Methods: This was a prospective cohort study involving ET patients registered at Chiang Mai University in the period September 2015–September 2017 who were aged more than 2 years, and did not harbor JAK2V617F mutation. The presence of CALR mutation was established by DNA sequencing, HRM, and real-time PCR for type 1 and type 2 mutation. Clinical data were compared with that from ET patients with mutated JAK2V617F. Results: Twenty-eight patients were enrolled onto the study. CALR mutations were found in 10 patients (35.7%). Three patients had type 1 mutation, 5 patients had type 2 mutation, 1 patient had type 18 mutation, and 1 patients had novel mutations (c.1093 C–G, c.1098_1131 del, c.1135 G–A). HRM could differentiate between the types of mutation in complete agreement with DNA sequencing. Patients with a CALR mutation showed a significantly greater male predominance and had a higher platelet count when compared with 42 JAK2V617F patients. Discussion and Conclusions: The prevalence of CALR mutation in JAK2V617F-negative ET in this study is 35.7%. HRM is an effective method of detecting CALR mutation and is a more advantageous method of screening for CALR mutation.
format Journal
author Ekarat Rattarittamrong
Adisak Tantiworawit
Noppamas Kumpunya
Ornkamon Wongtagan
Ratchanoo Tongphung
Arunee Phusua
Chatree Chai-Adisaksopha
Sasinee Hantrakool
Thanawat Rattanathammethee
Lalita Norasetthada
Pimlak Charoenkwan
Suree Lekawanvijit
spellingShingle Ekarat Rattarittamrong
Adisak Tantiworawit
Noppamas Kumpunya
Ornkamon Wongtagan
Ratchanoo Tongphung
Arunee Phusua
Chatree Chai-Adisaksopha
Sasinee Hantrakool
Thanawat Rattanathammethee
Lalita Norasetthada
Pimlak Charoenkwan
Suree Lekawanvijit
Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations
author_facet Ekarat Rattarittamrong
Adisak Tantiworawit
Noppamas Kumpunya
Ornkamon Wongtagan
Ratchanoo Tongphung
Arunee Phusua
Chatree Chai-Adisaksopha
Sasinee Hantrakool
Thanawat Rattanathammethee
Lalita Norasetthada
Pimlak Charoenkwan
Suree Lekawanvijit
author_sort Ekarat Rattarittamrong
title Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations
title_short Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations
title_full Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations
title_fullStr Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations
title_full_unstemmed Calreticulin mutation analysis in non-mutated Janus kinase 2 essential thrombocythemia patients in Chiang Mai University: analysis of three methods and clinical correlations
title_sort calreticulin mutation analysis in non-mutated janus kinase 2 essential thrombocythemia patients in chiang mai university: analysis of three methods and clinical correlations
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043317270&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48476
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