hearing loss (hl) is the most frequent sensory defect present in 1 of every 500 newborns. in developed countries, at least 50% of cases are caused genetic factors, most often resulting in nonsyndromic hl (70%), which is usually autosomal recessive (80%). to date, fifty genes associated with autosomal recessive non-syndromic hearing loss (arnshl) have been reported.  the aim of this study was to...

AIMS Mutations in the GJB2 gene-encoding connexin 26 protein are the main cause for autosomal recessive nonsyndromic hearing loss worldwide. In this study, we assessed the contributions made by GJB2 and del(GJB6-D13S1830) mutations to the autosomal recessive nonsyndromic deafness genetic load in Iranian Azeri Turkish patients. RESULTS Probands from 209 different nuclear families were investig...

Dysfunctional gap junctions caused by GJB2 (CX26) and GJB6 (CX30) mutations are implicated in nearly half of nonsyndromic hearing loss cases. A recent study identified a heterozygous mutation, c.119C>T (p.A40V), in the GJB6 gene of patients with nonsyndromic hearing loss. However, the functional role of the mutation in hearing loss remains unclear. In this study, analyses of cell biology indica...

Nonsyndromic hearing loss is a paradigm of genetic heterogeneity with 85 loci and 39 nuclear disease genes reported so far. Mutations of BSND have been shown to cause Bartter syndrome type IV, characterized by significant renal abnormalities and deafness and nonsyndromic nearing loss. We studied a Pakistani consanguineous family. Clinical examinations of affected individuals did not reveal the ...

Hereditary nonsyndromic hearing loss is extremely heterogeneous. Mutations in the transmembrane channel-like gene1 (TMC1) are known to cause autosomal dominant and recessive forms of nonsyndromic hearing loss linked to the loci of DFNA36 and DFNB7/11, respectively. We characterized a six-generation Chinese family (5315) with progressive, postlingual autosomal dominant nonsyndromic hearing loss ...

OBJECTIVE To compare three-dimensionally the midfacial hard- and soft-tissue asymmetries between the affected and the unaffected sides and determine the relationship between the hard tissue and the overlying soft tissue in patients with nonsyndromic complete unilateral cleft lip and palate (UCLP) by cone-beam computed tomography (CBCT) analysis. METHODS The maxillofacial regions of 26 adults ...

BACKGROUND Bladder-exstrophy-epispadias complex (BEEC) is a severe congenital anomaly that represents a spectrum of urological abnormalities where parts or all of the distal urinary tract fail to close during development. Multiple lines of evidence strongly suggested p63 as a plausible candidate gene. We conducted a candidate gene association study to further investigate the role of p63 in huma...

GATA binding protein 6 (GATA6) encodes a zinc‑finger transcription factor that is essential for normal heart development. Mutations in this gene lead to conotruncal heart defects associated with cyanotic congenital heart disease; however, it remains unclear whether the mutations in GATA6 are also responsible for the development of the nonsyndromic conotruncal heart defects. The coding region exo...

Hearing loss is a common birth defect worldwide. The GJB2, SLC26A4, MT-RNR1 and MT-TS1 genes have been reported as major pathogenic genes in nonsyndromic hearing loss. Early genetic screening is recommended to minimize the incidence of hearing loss. We hereby described a multicolor melting curve analysis (MMCA)-based assay for simultaneous detection of 12 prevalent nonsyndromic hearing loss-rel...