Identification of compound heterozygous mutations in AP1B1 leading to the newly-described recessive keratitis-ichthyosis-deafness (KIDAR) syndrome.

Identification of compound heterozygous mutations in AP1B1 leading to the newly-described recessive keratitis-ichthyosis-deafness (KIDAR) syndrome. Br J Dermatol. 2021 Jan 16;: Authors: Vornweg J, Gläser S, Ahmad-Anwar M, Zimmer AD, Kuhn M, Hörer S, Korenke GC, Grothaus J, Ott H, Fischer J Abstract Recently, mutations in Adaptor Related Protein Complex 1 Subunit Beta 1 (AP1B1) have been identified as the cause of a new form of syndromic ichthyosis, which is characterized by neonatal onset of ichthyosis, erythroderma and deafness accompanied by failure to thrive and developmental delay.(1,2) In adulthood, keratitis has been diagnosed as well.(1) Based on the observed phenotype and the autosomal-recessive mode of inheritance, the disease has been classified as a keratitis-ichthyosis-deafness syndrome (KIDAR; OMIM:242150). In this letter, we describe an additional case of KIDAR caused by AP1B1 mutations including one novel missense mutation. We also show the molecular consequences of the mutations and define the main features of this new syndrome. PMID: 33452671 [PubMed - as supplied by publisher]
Source: The British Journal of Dermatology - Category: Dermatology Authors: Tags: Br J Dermatol Source Type: research