Mutations in the X-linked E{sub 1}{alpha} subunit of pyruvate dehydrogenase: Exon skipping, insertion of duplicate sequence, and missense mutations leading to the deficiency of the pyruvate dehydrogenase complex
- Univ. of Toronto (Canada)
- Univ. of Siena (Italy)
Human pyruvate dehydrogenase (PDH)-complex deficiency is an inborn error of metabolism that is extremely heterogeneous in its presentation and clinical course. In a study of 14 patients (7 females and 7 males), we have found a mutation in the coding region of the E{sub 1}{alpha} gene in all 14 patients. Two female patients had the same 7-bp deletion at nt 927; another female patient had a 3-bp deletion at nt 931. Another female patient was found to have a deletion of exon 6 in her cDNA. Two other female patients were found to have insertions, one of 13 bp at nt 981 and one of 46 bp at nucleotide 1078. Two male patients were found to have a 4-bp insertion at nucleotide 1163. The remaining six patients all had missense mutations. A male patient and a female patient both had an A1133G mutation. The other missense mutations were C214T, C615A, and C787G (two patients). Five of these mutations are novel mutations, five had been previously reported in other patients, and two were published observations in other patients in an E{sub 1}{alpha}-mutation summary. In the four cases where parent DNA was available, only one mother was found to be a carrier of the same mutation as her child. 61 refs., 5 figs., 2 tabs.
- OSTI ID:
- 70435
- Journal Information:
- American Journal of Human Genetics, Vol. 56, Issue 3; Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
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