Ellen McDonagh Added comment: Comment on mode of inheritance: For Focal dermal hypoplasia, heterozygous females are affected. Confirmed with the Genomics England Clinical Team prior to revision from biallelic in females.
Ellen McDonagh Mode of inheritance for gene: PORCN was changed from X-LINKED: hemizygous mutation in males, biallelic mutations in females to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)