Clinical, Endocrine, and Molecular Genetic Analysis of a Large Cohort of Saudi Arabian Patients with Laron Syndrome.

Abstract:

BACKGROUND/AIMS:Laron syndrome (LS) is an autosomal recessive disease characterized by marked short stature and very low serum IGF-1 and IGFBP-3 levels. This study assessed the clinical and endocrine features alongside determining the growth hormone receptor gene (GHR) mutation in Saudi Arabian patients with LS in order to establish whether or not a genotype/phenotype correlation is evident in this large cohort. SUBJECTS AND METHODS:A total of 40 Saudi Arabian patients with a suspected diagnosis of LS were recruited and subjected to a full clinical and endocrine investigation together with direct sequencing of the coding regions of the GHR gene. RESULTS:GHR mutations were identified in 34 patients from 22 separate nuclear families. All 34 molecularly confirmed patients had the typical clinical and endocrinological manifestations of LS. Eleven different mutations (9 previously unreported) were detected in this cohort of patients, all inherited in an autosomal recessive homozygous form. No genotype/phenotype correlation was apparent. CONCLUSION:The identification of pathogenic mutations causing LS will be of tremendous use for the molecular diagnosis of patients in Saudi Arabia and the region in general, with respect to prevention of this disease in the forms of future carrier testing, prenatal testing, premarital screening and preimplantation genetic diagnosis.

journal_name

Horm Res Paediatr

authors

Al-Ashwal AA,Al-Sagheir A,Ramzan K,Al-Owain M,Allam R,Qari A,Al-Numair NS,Imtiaz F

doi

10.1159/000475991

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

119-126

issue

2

eissn

1663-2818

issn

1663-2826

pii

000475991

journal_volume

88

pub_type

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