Genome‐wide linkage analysis and whole‐exome sequencing identifies an ITGA2B mutation in a family with thrombocytopenia. (23rd May 2019)

• Record Type: Journal Article
• Authors: Khoriaty, Rami; Ozel, Ayse B.; Ramdas, Shweta; Ross, Charles; Desch, Karl; Shavit, Jordan A.; Everett, Lesley; Siemieniak, David; Li, Jun Z.; Ginsburg, David
• Is Part Of: British journal of haematology. Volume 186:Number 4(2019)
• Page Start: 574
• Page End: 579
• Publication Date: 2019-05-23
• Subjects: hereditary thrombocytopenia -- linkage analysis -- whole exome sequencing -- ITGA2B -- autosomal dominant thrombocytopenia; Hematology -- Periodicals; Blood -- Diseases -- Periodicals; 616.15
• DOI: 10.1111/bjh.15961
• Languages: English
• ISSNs: 0007-1048

Abstract

Summary: Hereditary thrombocytopenias can be subclassified based on mode of inheritance and platelet size. Here we report a family with autosomal dominant (AD) thrombocytopenia with normal platelet size. Linkage analysis and whole exome sequencing identified the R1026W substitution in ITGA2B as the causative defect. The same mutation has been previously reported in 7 Japanese families/patients with AD thrombocytopenia, but all of these patients had macrothrombocytopenia. This is the first report of a family with AD thrombocytopenia with normal platelet size resulting from mutation in ITGA2B . ITGA2B mutations should therefore be included in the differential diagnosis of this latter disorder.