POLR1C and Branchio-otic syndrome: No epigenetic deregulations were also found by inspecting our deregulation lists for the presence of genes causing other syndromes in differential diagnosis with OAVS such as TCOF1, POLR1C, POLR1D (Treacher–Collins) [39,40], CHD7 and SEMA3E (Charge) [41,42], SALL1 (Townes–Brocks) [43] and EYA1, SIX1, and SIX5 (Branchiootic syndrome 1) [44,45].