Detection of a novel mutation in the GAA gene in an Iranian child with glycogen storage disease type II
Archives of Iranian Medicine. 2013; 16 (2): 126-128
in English
| IMEMR
| ID: emr-140313
ABSTRACT
Glycogen storage disease II [GSDII or Pompe disease, OMIM # 232300] is an autosomal recessive hereditary lysosomal disorder. Mutations in the GAA gene usually lead to reduced acid alpha-glucosidase [acid maltase, GAA, OMIM [asterisk] 606800, EC 3.1.26.2] activity, which results in impaired degradation and subsequent accumulation of glycogen within lysosomes. We present an Iranian boy, who was diagnosed with GSDII based upon clinical and biochemical findings. A single adenine insertion [insA] was detected at codon 693 that leads to a predicted premature stop codon at codon 736 in the GAA gene. The parents were heterozygous for the same change. According to the human genome mutation database [www.hgmd.org] and lecture reviews, the detected change is a novel mutation. We suppose that the discovered insertion in the GAA gene might lead to a reduced activity of the gene product. This assumption is in agreement with biochemical and clinical signs in the patient
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Child
/
Alpha-Glucosidases
/
Mutation
Type of study:
Case report
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Arch. Iran. Med.
Year:
2013
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