objective(s) despite the enormous heterogeneity of genetic hearing loss, most non-syndromic hearing losses are caused by mutations in the gjb2 gene. we aimed to characterize the mutation profiles of 100 iranian deaf patients that were under 10 years old. materials and methods patients were tested with direct sequencing of entire coding region of the gjb2 gene. results eight known mutations plus...

Objective(s): Targeted next-generation sequencing (NGS) provides a consequential opportunity to elucidate genetic factors in known diseases, particularly in profoundly heterogeneous disorders such as non-syndromic hearing loss (NSHL). Hearing impairments could be classified into syndromic and non-syndromic types. This study intended to assess the significance of mutations in these genes to the ...

as a result of higher distributed consanguinity in the mediterranean region and the middle east, autosomal-recessive forms of charcot-marie-tooth (arcmt) are more common in these areas. cmt disease caused by mutations in the ganglioside-induced differentiation-associated protein 1 (gdap1) gene is a severe autosomal recessive neuropathy resulting in either demyelinating cmt4a neuropathy or axona...

Bartter syndrome (BS) is a group of uncommon genetic disorders of reabsorption of salt in the cortical thick ascending limb (TAL) of the Henle's loop, typically distinguished by metabolic alkalosis, salt loss, hypokalemia, hyperreninemic hyperaldosteronism and normal blood pressure. Bartter syndrome type 3, recognized as a classic BS (CBS), occurs because of mutations in CLCNKB gene. We enroll...

BACKGROUND Phenylalanine hydroxylase (PAH) gene is the well-known causative gene for classic Phenylketonuria (PKU) (OMIM#261600) disease, with more than 500 reported mutations. Through this study, a novel mutation in the PAH gene in an Iranian pedigree with phenylketonuria was introduced. METHODS A consanguineous family with a 10-year old affected girl was referred for genetic analysis. Mutat...

OBJECTIVE Nephropatic Cystinosis (NC) is a rare metabolic disorder due to mutation in the CTNS gene in which more than 90 different mutations have already been reported so far. This study was performed to investigate mutations of the CTNS gene and its promoter in a number of Iranian patients with NC. METHODS Polymerase chain reaction and direct sequencing were performed for molecular characte...

BACKGROUND Cystic fibrosis (CF) is a common autosomal recessive disorder that affects many body systems and is produced by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. CF is also the most frequently inherited disorder in the West. The aim of this study was to detect the mutations in the CFTR gene in two Iranian families with CF. METHODS After DNA extractio...

Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED), also named as autoimmune polyglandular syndrome (APS) type 1, is a rare autosomal recessive disorder caused by mutations in autoimmune regulator (AIRE) gene. It is distinguished by an immune-mediated damage of endocrine tissues, chronic candidiasis, and ectodermal disorder. APECED has been shown to be frequent in some popu...

Mucopolysaccharidosis type IIIC (MPSIIIC) is a rare subtype of mucopolysaccharidosis disorder family caused by mutations in heparan-alpha-glucosaminide N-acetyltransferase (HGSNAT) gene. MPSIIIC is subdivided into four subtypes which have overlapping features, and are indistinguishable at clinical level. In populations with high consanguineous marriage rate, homozygosity mapping can be a good c...