Two Novel Homozygous Desmoplakin Mutations in Carvajal Syndrome.

Background: Mutations in various desmosomal proteins were shown to cause inherited forms of cardiomyopathy. Carvajal syndrome (Online Mendelian Inheritance in Man [OMIM] 605676) is characterized by the association of dilated cardiomyopathy, striate palmoplantar keratoderma, and woolly hair. It is caused by homozygous as well as heterozygous mutations in DSP, which encodes the desmosomal plaque protein desmoplakin.

IL36RN mutation causing generalized pustular psoriasis in a Palestinian patient.

Deficiency of interleukin-36 (IL-36) receptor antagonist (DITRA; OMIM 614204) is a rare autoinflammatory disorder characterized by periodic fever associated with a generalized erythematous and pustular skin rash. A 6-year-old Arab-Palestinian boy presented with a history of periodic fever and unremitting, erythematous, scaly skin rash accompanied by widespread pustules that had been present since the age of one month. The patient's skin lesions were compatible with generalized pustular psoriasis.

Mutation in KANK2, encoding a sequestering protein for steroid receptor coactivators, causes keratoderma and woolly hair.

Background: The combination of palmoplantar keratoderma and woolly hair is uncommon and reported as part of Naxos and Carvajal syndromes, both caused by mutations in desmosomal proteins and associated with cardiomyopathy. We describe two large consanguineous families with autosomal-recessive palmoplantar keratoderma and woolly hair, without cardiomyopathy and with no mutations in any known culprit gene. The aim of this study was to find the mutated gene in these families.

Ophthalmologic Findings in H Syndrome: A Unique Diagnostic Clue.

Background: H syndrome is an autosomal recessive histiocytosis with multisystemic involvement caused by mutations in the SLC29A3 gene. The term H syndrome was coined to denote the major clinical findings which include hyperpigmentation, hypertrichosis, hearing loss, hepatosplenomegaly, hypogonadism, hyperglycemia/diabetes mellitus and hallux valgus/flexion contractures. Almost 100 individuals affected with this disorder have been reported, however, a thorough evaluation of the ophthalmologic features of H syndrome has not yet been performed.

H syndrome: the first 79 patients.

Background: H syndrome is an autosomal recessive genodermatosis with multisystem involvement caused by mutations in SLC29A3.

Objective: We sought to investigate the clinical and molecular findings in 79 patients with this disorder.

Methods: A total of 79 patients were included, of which 13 are newly reported cases.

Mutations in proteasome subunit β type 8 cause chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature with evidence of genetic and phenotypic heterogeneity.

Objective: Chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature (CANDLE syndrome) is an autoinflammatory syndrome recently described in children. We undertook this study to investigate the clinical phenotype, genetic cause, and immune dysregulation in 9 CANDLE syndrome patients.

Methods: Genomic DNA from all patients was screened for mutations in PSMB8 (proteasome subunit β type 8).