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Published on: August 24, 2013
Homozygous 6-bp deletion of IGFALS in a prepubertal boy with short stature
Hibiki Doi1,2, Ikuko Kageyama1, Yuko Katoh-Fukui1
1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.
Abstract:
Biallelic IGFALS variants lead to acid‒labile subunit (ALS) deficiency characterized by growth hormone resistance with or without delayed puberty. Here, we report a prepubertal boy with a homozygous 2-amino acid deletion within the fourth N-glycosylation motif (c.1103_1108del, p.N368_S370delinsT) associated with parental consanguinity. He showed short stature consistent with ALS deficiency. This case expands the mutation spectrum of IGFALS to include the elimination of only one N-glycosylation motif of ALS.
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