hrp0095p1-201 | Adrenals and HPA Axis | ESPE2022

Gene Chimeras Involving CYP21A2 and TNXB Genes in Spanish Patients with Congenital Adrenal Hyperplasia (CAH)

Martínez Figueras Laura , Escribano Muñoz Arancha , Carcavilla Atilano , Berthold Laura , Llorente Martín Elena , Arriba Domènech María , Ezquieta Zubicaray Begoña

Background-Aim: Gene rearrangements between CYP21A2, TNXB and their homologous pseudogenes (CYP21A1P,TNXA) result in chimeric genes, responsible for the CAHX syndrome. CAHX patients show CAH and Ehlers-Danlos syndrome (EDS) symptoms. Three CAHX chimeras with different clinical severity are described: CH1 (including 120bp deletion in exon 35), CH2 and CH3. The small size and few series reported so far warrant further studies ...