Heterozygosity for bisphosphoglycerate mutase deficiency expressing clinically as congenital erythrocytosis: A case series and literature review.
Fiche publication
Date publication
septembre 2022
Journal
British journal of haematology
Auteurs
Membres identifiés du Cancéropôle Est :
Pr GIRODON François
Tous les auteurs :
van Dijk MJ, van Oirschot BA, Stam-Slob MC, Waanders E, van der Zwaag B, van Beers EJ, Jans JJM, van der Linden PW, Torregrosa Diaz JM, Gardie B, Girodon F, Schots R, Thielen N, van Wijk R
Lien Pubmed
Résumé
Erythrocytosis is associated with increased red blood cell mass and can be either congenital or acquired. Congenital secondary causes are rare and include germline variants increasing haemoglobin (Hb)-oxygen affinity (e.g., Hb or bisphosphoglycerate mutase (BPGM) variants) or affecting oxygen-sensing pathway proteins. Here, we describe five adults from three kindreds with erythrocytosis associated with heterozygosity for BPGM variants, including one novel. Functional analyses showed partial BPGM deficiency, reduced 2,3-bisphosphoglycerate levels and/or increased Hb-oxygen affinity. We also review currently known BPGM variants. This study contributes to raising awareness of BPGM variants, and in particular that heterozygosity for BPGM deficiency may already manifest clinically.
Référence
Br J Haematol. 2022 09 30;: