Abstract
An identical nonsense mutation (E72X) in growth hormone releasing hormone receptor ( GHRHR) gene was identified in 17 patients with isolated GH deficiency belonging to one Muslim and four Hindu families residing in the Western part of India. Analysis of two dinucleotide repeat polymorphism, one at 6 kb downstream and the other at 13 kb downstream of GHRHR gene, revealed that all the patients shared the same homozygotic alleles at both loci. These results strongly indicate that the nonsense mutation occurred in a single ancestor and was subsequently transmitted to the descendants. This GHRHR mutation may be an important cause of familial IGHD in Western India and Sindh area of Pakistan as previous studies have also reported the same mutation.
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