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Villanueva A, Poon KS, Gallardo CA, Chai CN, Chiu L, Yan B, Ding CSL, Yong KJ, Zhou J, Lee J, Tan K, Ong KH. A novel JAK2 R564* variant in a patient with thrombocytosis. Int J Lab Hematol 2019; 42:e38-e41. [PMID: 31441587 DOI: 10.1111/ijlh.13090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/19/2019] [Accepted: 07/22/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Andre Villanueva
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Kok Siong Poon
- Molecular Diagnosis Centre, Department of Laboratory Medicine, National University Health System, Singapore
| | | | - Chean Nee Chai
- Molecular Diagnosis Centre, Department of Laboratory Medicine, National University Health System, Singapore
| | - Lily Chiu
- Molecular Diagnosis Centre, Department of Laboratory Medicine, National University Health System, Singapore
| | - Benedict Yan
- Molecular Diagnosis Centre, Department of Laboratory Medicine, National University Health System, Singapore
| | - Cristine S L Ding
- Department of Pathology, Tan Tock Seng Hospital, National Healthcare Group, Singapore
| | - Kol Jia Yong
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Jianbiao Zhou
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Joanne Lee
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Karen Tan
- Molecular Diagnosis Centre, Department of Laboratory Medicine, National University Health System, Singapore
| | - Kiat Hoe Ong
- Department of Haematology, Tan Tock Seng Hospital, National Healthcare Group, Singapore
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Léon C, Dupuis A, Gachet C, Lanza F. The contribution of mouse models to the understanding of constitutional thrombocytopenia. Haematologica 2017; 101:896-908. [PMID: 27478199 DOI: 10.3324/haematol.2015.139394] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/04/2016] [Indexed: 11/09/2022] Open
Abstract
Constitutional thrombocytopenias result from platelet production abnormalities of hereditary origin. Long misdiagnosed and poorly studied, knowledge about these rare diseases has increased considerably over the last twenty years due to improved technology for the identification of mutations, as well as an improvement in obtaining megakaryocyte culture from patient hematopoietic stem cells. Simultaneously, the manipulation of mouse genes (transgenesis, total or conditional inactivation, introduction of point mutations, random chemical mutagenesis) have helped to generate disease models that have contributed greatly to deciphering patient clinical and laboratory features. Most of the thrombocytopenias for which the mutated genes have been identified now have a murine model counterpart. This review focuses on the contribution that these mouse models have brought to the understanding of hereditary thrombocytopenias with respect to what was known in humans. Animal models have either i) provided novel information on the molecular and cellular pathways that were missing from the patient studies; ii) improved our understanding of the mechanisms of thrombocytopoiesis; iii) been instrumental in structure-function studies of the mutated gene products; and iv) been an invaluable tool as preclinical models to test new drugs or develop gene therapies. At present, the genetic determinants of thrombocytopenia remain unknown in almost half of all cases. Currently available high-speed sequencing techniques will identify new candidate genes, which will in turn allow the generation of murine models to confirm and further study the abnormal phenotype. In a complementary manner, programs of random mutagenesis in mice should also identify new candidate genes involved in thrombocytopenia.
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Affiliation(s)
- Catherine Léon
- UMR_S949, INSERM, Strasbourg, France Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France Université de Strasbourg, France Fédération de Médecine Translationnelle de Strasbourg (FMTS), France
| | - Arnaud Dupuis
- UMR_S949, INSERM, Strasbourg, France Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France Université de Strasbourg, France Fédération de Médecine Translationnelle de Strasbourg (FMTS), France
| | - Christian Gachet
- UMR_S949, INSERM, Strasbourg, France Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France Université de Strasbourg, France Fédération de Médecine Translationnelle de Strasbourg (FMTS), France
| | - François Lanza
- UMR_S949, INSERM, Strasbourg, France Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France Université de Strasbourg, France Fédération de Médecine Translationnelle de Strasbourg (FMTS), France
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