PMP22 and syndromic recessive X-linked ichthyosis: The most common incidental CNVs in both groups were PMP22 (*6010979) deletions or duplications, leading to recurrent neuropathy with pressure palsies (MIM#162500) or Charcot–Marie–Tooth disease 1A (MIM#118220), respectively, and Xp22.31 deletions encompassing STS (MIM*300747), implied in X-linked ichthyosis (MIM#308100).