Fiche publication
Date publication
août 2008
Auteurs
Membres identifiés du Cancéropôle Est :
Pr CHAMBON Pierre
,
Pr PHILIPPE Christophe
Tous les auteurs :
Beri-Dexheimer M, Latger-Cannard V, Philippe C, Bonnet C, Chambon P, Roth V, Gregoire MJ, Bordigoni P, Lecompte T, Leheup B, Jonveaux P
Lien Pubmed
Résumé
Germline RUNX1 mutations result in a rare autosomal dominant condition characterized by qualitative and quantitative platelet defects and predisposition to the development of myeloid malignancies (familial platelet disorder with propensity to acute myeloid leukaemia, FPD/AML). Only 13 pedigrees have previously been described so far. We report on two novel germline RUNX1 mutations: (1) an out-of-frame 8 bp heterozygous deletion (c.442_449del) in an FPD/AML pedigree and (2) a de novo 3.5 Mb deletion in the 21q22.11.21q22.12 region encompassing the RUNX1 gene in a mentally retarded female patient with short stature and thrombocytopenia. Interestingly, a similar de novo submicroscopic deletion has been recently reported in the literature in a mentally retarded patient. Mental retardation is one of the most common disorders and primary causes of thrombocytopenia are rare. When occurring together, these features should prompt to test for 21q22 deletion for comprehensive genetic counselling and clinical management.
Référence
Eur J Hum Genet. 2008 Aug;16(8):1014-8
