CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia

Essential thrombocythemia (ET) is a blood cancer defined by a strong increase of platelet numbers. A quarter of patients suffering from ET show mutations in the last exon of calreticulin (CALR) gene. Two variants named type 1 and type 2 represent 85% of these patients. However, a large number of oth...

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Main Authors: Nora El Jahrani, Gabriel Cretin, Alexandre G. de Brevern
Format: Article
Language:English
Published: Taylor & Francis Group 2022-01-01
Series:Platelets
Subjects:
Online Access:http://dx.doi.org/10.1080/09537104.2020.1869712
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author Nora El Jahrani
Gabriel Cretin
Alexandre G. de Brevern
author_facet Nora El Jahrani
Gabriel Cretin
Alexandre G. de Brevern
author_sort Nora El Jahrani
collection DOAJ
description Essential thrombocythemia (ET) is a blood cancer defined by a strong increase of platelet numbers. A quarter of patients suffering from ET show mutations in the last exon of calreticulin (CALR) gene. Two variants named type 1 and type 2 represent 85% of these patients. However, a large number of other variants have been determined. In this study, we have compiled variants taken from COSMIC database and literature leading to 155 different variants. This large number of variants allowed redefining 5 new classes extending the classification of type 1-like and type 2-like to a finer description. These analyses showed that last class, named E, corresponding to more than 10% of CALR variants seemed not attached to ET. Structural properties analyzed showed that CALR variants associated to ET have common features. All the compiled and refined information had been included into a freely dedicated database CALR-ETdb (https://www.dsimb.inserm.fr/CALR-ET).
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spelling doaj.art-1066e964cc1643249271e6f2467e7fc22023-09-15T10:38:09ZengTaylor & Francis GroupPlatelets0953-71041369-16352022-01-0133115716710.1080/09537104.2020.18697121869712CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemiaNora El Jahrani0Gabriel Cretin1Alexandre G. de Brevern2Université de Paris, UMR_S 1134, Université De La Réunion, Université Des AntillesUniversité de Paris, UMR_S 1134, Université De La Réunion, Université Des AntillesUniversité de Paris, UMR_S 1134, Université De La Réunion, Université Des AntillesEssential thrombocythemia (ET) is a blood cancer defined by a strong increase of platelet numbers. A quarter of patients suffering from ET show mutations in the last exon of calreticulin (CALR) gene. Two variants named type 1 and type 2 represent 85% of these patients. However, a large number of other variants have been determined. In this study, we have compiled variants taken from COSMIC database and literature leading to 155 different variants. This large number of variants allowed redefining 5 new classes extending the classification of type 1-like and type 2-like to a finer description. These analyses showed that last class, named E, corresponding to more than 10% of CALR variants seemed not attached to ET. Structural properties analyzed showed that CALR variants associated to ET have common features. All the compiled and refined information had been included into a freely dedicated database CALR-ETdb (https://www.dsimb.inserm.fr/CALR-ET).http://dx.doi.org/10.1080/09537104.2020.1869712classificationdatabasempnprotein structural modelssequence analyses
spellingShingle Nora El Jahrani
Gabriel Cretin
Alexandre G. de Brevern
CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia
Platelets
classification
database
mpn
protein structural models
sequence analyses
title CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia
title_full CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia
title_fullStr CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia
title_full_unstemmed CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia
title_short CALR-ETdb, the database of calreticulin variants diversity in essential thrombocythemia
title_sort calr etdb the database of calreticulin variants diversity in essential thrombocythemia
topic classification
database
mpn
protein structural models
sequence analyses
url http://dx.doi.org/10.1080/09537104.2020.1869712
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