Mutations in ACTRT1 and its enhancer RNA elements lead to aberrant activation of Hedgehog signaling in inherited and sporadic basal cell carcinomas

Nature Medicine 23, 1226 (2017). doi:10.1038/nm.4368 Authors: Elodie Bal, Hyun-Sook Park, Zakia Belaid-Choucair, Hülya Kayserili, Magali Naville, Marine Madrange, Elena Chiticariu, Smail Hadj-Rabia, Nicolas Cagnard, Francois Kuonen, Daniel Bachmann, Marcel Huber, Cindy Le Gall, Francine Côté, Sylvain Hanein, Rasim Özgür Rosti, Ayca Dilruba Aslanger, Quinten Waisfisz, Christine Bodemer, Olivier Hermine, Fanny Morice-Picard, Bruno Labeille, Frédéric Caux, Juliette Mazereeuw-Hautier, Nicole Philip, Nicolas Levy, Alain Taieb, Marie-Françoise Avril, Denis J Headon, Gabor Gyapay, Thierry Magnaldo, Sylvie Fraitag, Hugues Roest Crollius, Pierre Vabres, Daniel Hohl, Arnold Munnich & Asma Smahi Basal cell carcinoma (BCC), the most common human cancer, results from aberrant activation of the Hedgehog signaling pathway. Although most cases of BCC are sporadic, some forms are inherited, such as Bazex–Dupré–Christol syndrome (BDCS)—a cancer-prone genodermatosis with an X-linked, dominant inheritance pattern. We have identified mutations in the ACTRT1 gene, which encodes actin-related protein T1 (ARP-T1), in two of the six families with BDCS that were examined in this study. High-throughput sequencing in the four remaining families identified germline mutations in noncoding sequences surrounding ACTRT1. These mutations were located in transcribed sequences encoding enhancer RNAs (eRNAs) and were shown to impair enhan...
Source: Nature Medicine - Category: General Medicine Authors: Tags: Letter Source Type: research