Novel Mutation in GJB4 Gene (Connexin 30.3) in a Family with Erythrokeratodermia Variabilis

Novel mutation in GJB4 gene (connexin 30.3) in a family with erythrokeratodermia variabilis.

© 2012 The Authors. doi: 10.2340/00015555-1436 Journal Compilation © 2012 Acta Dermato-Venereologica. ISSN 0001-5555 Erythrokeratodermia variabilis (EKV, MIM: 133200) is a rare autosomal dominant disorder characterized by the association of: (i) localized or generalized hyperkeratosis, and (ii) transient erythematous areas (1). Hyperkeratotic areas show well-demarcated, geographically outlined,...

A Novel Missense Mutation in CLCN1 Gene in a Family with Autosomal Recessive Congenital Myotonia

Congenital recessive myotonia is a rare genetic disorder caused by mutations in CLCN1, which codes for the main skeletal muscle chloride channel ClC-1. More than 120 mutations have been found in this gene. The main feature of this disorder is muscle membrane hyperexcitability. Here, we report a 59-year male patient suffering from congenital myotonia. He had transient generalized myotonia, which...

Identification of a Novel Mutation in CNNM4 Gene in an Iranian Family with Jalili Syndrome

Background and Objectives: Jalili syndrome is a rare autosomal recessive genetic disorder, which so far, only 33 families with this disorder have been reported worldwide. Patients with this disease simultaneously develop cone-rod retinal dystrophy (CRD) and amelogenesis imperfecta (AI). In this study, a mutation causing Jalili syndrome, was investigated in an Iranian family.   Case Report: The...

Identification of a Novel Splice Site Mutation in RUNX2 Gene in a Family with Rare Autosomal Dominant Cleidocranial Dysplasia

Introduction: Pathogenic variants of RUNX2, a gene that encodes an osteoblast-specific transcription factor, have been shown as the cause of CCD, which is a rare hereditary skeletal and dental disorder with dominant mode of inheritance and a broad range of clinical variability. Due to the relative lack of clinical complications resulting in CCD, the medical diagnosis of this disorder is challen...

An unusual missense mutation in the GJB3 gene resulting in severe erythrokeratodermia variabilis.