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X-linked ichthyosis (abbreviated XLI) is a skin condition caused by the hereditary deficiency of the steroid sulfatase (STS) enzyme that affects 1 in 2000 to 1 in 6000 males. [2] XLI manifests with dry, scaly skin [ 3 ] and is due to deletions [ 4 ] [ 5 ] or mutations [ 6 ] in the STS gene.
IP is inherited in an X-linked dominant manner. [4] [5] IP is lethal in most, but not all, males. A female with IP may have inherited the IKBKG mutation from either parent or have a new gene mutation. Parents may either be clinically affected or have germline mosaicism. Affected women have a 50% risk of transmitting the mutant IKBKG allele at ...
Most cases are caused by mutations in the EDA gene, which are inherited in an X-linked recessive pattern, called x-linked hypohidrotic ectodermal dysplasia (XLHED). A condition is considered X-linked if the mutated gene that causes the disorder is located on the X chromosome, one of the two sex chromosomes.
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Ichthyosis (also named fish scale disease) [1] is a family of genetic skin disorders characterized by dry, thickened, scaly skin. [2] The more than 20 types of ichthyosis range in severity of symptoms, outward appearance, underlying genetic cause and mode of inheritance (e.g., dominant, recessive, autosomal or X-linked). [3]
These plates fall off over several weeks. [3] Other complications can include premature birth, infection, problems with body temperature, and dehydration. [4] [5] The condition is the most severe form of ichthyosis (except for syndromes that include ichthyosis, for example, Neu–Laxova syndrome), a group of genetic disorders characterised by ...
Ichthyosis vulgaris (also known as "autosomal dominant ichthyosis" [1] and "Ichthyosis simplex" [1]) is a skin disorder causing dry, scaly skin. It is the most common form, and one of the mildest forms, of ichthyosis, [2] [3]: 486 affecting around 1 in 250 people. [4] For this reason it is known as common ichthyosis.
Keratosis linearis with ichthyosis congenita and sclerosing keratoderma syndrome (KLICK syndrome) is a rare cutaneous condition characterized by ichthyosis and keratoderma. [ 1 ] [ 2 ] It is an autosomal recessive disorder associated with a deletion in the transcription gene POMP , which codes proteasome maturation protein.