کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3819376 | 1246424 | 2016 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Study of Met34Thr variant in nonsyndromic hearing loss in four Portuguese families Study of Met34Thr variant in nonsyndromic hearing loss in four Portuguese families](/preview/png/3819376.png)
ABSTRACTObjectiveThe purpose of this work was to characterize the Met34Thr variant in a group of patients with nonsyndromic hearing loss, in order to establish a genotype-phenotype correlation.Methods13 cases from 4 unrelated Portuguese families were selected, in which one or more hearing-impaired members had Met34Thr variant.ResultsMet34Thr variant was identified in 11/13 cases. Two cases have an additional mutation – Val153Ile and 35delG. Hearing loss was mild in 2 patients (Met34Thr/Val153Ile; Met34Thr/Met34Thr), moderate in 3(Met34Thr/WT; Met34Thr/35delG; Met34Thr/Met34Thr), severe in 2 (2 Met34Thr/WT) and profound in 1 (Met34Thr/WT). Three individuals with Met34Thr had normal hearing thresholds.ConclusionThe present data corroborate the hypothesis that the Met34Thr variant is associated with mild-to-severe forms of deafness and that this variant seems to segregate with a dominant hearing loss with incomplete penetrance and a variable expression of the phenotype. However, other factors are likely to also have a pathologic effect.
Journal: Porto Biomedical Journal - Volume 1, Issue 1, March–April 2016, Pages 32–35