Abstract
Lowe syndrome is an x-linked disorder characterized by congenital cataracts, nervous system abnormalities and renal tubular dysfunction. With the rising number of reported cases, more patients are found to suffer from endocrine abnormalities. Hereby, three Chinese patients with typical symptoms and extremely short stature were described. The OCRL gene was analyzed. A combination of blood biochemistry and radiological examinations were performed. Growth hormone provocation test was taken in one patient. Nucleotide sequence analysis revealed a de novo novel hemizygous mutation (c.2290_2291delinsCT) in exon 21 in an adolescent boy. As indicated by the growth hormone provocation test, the boy had growth hormone deficiency. The other two patients were brothers with extremely short stature, and manifested the same hemizygous mutation (c.2581G > A) in exon 23. It was speculated that the mutation of OCRL gene could lead to deficiency of growth hormone, for which an early growth hormone intervention may be beneficial.
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