The genes phr, Dmp8/TTDA, and mei‐9 are potential mutants involved in ultraviolet resistance, demonstrating strong photo‐repair activity in the Drosophila Trichothiodystrophy model (Boyd and Harris 1987; Yildiz et al. 2004; Aguilar‐Fuentes et al. 2008). Here, MYCBP2 is linked to trichothiodystrophy.