Nayereh Nouri1, Narges Nouri2, Omid Aryani3, Behnam Kamalidehghan4, Maryam Sedghi1, Massoud Houshmand5. 1. Dept. of Genetics, National Institute for Genetic Engineering and Biotechnology, Tehran, Iran. 2. Genetic Counseling Center, Isfahan, Iran. 3. Dept. of Genetics, Special Medical Center, Tehran, Iran. 4. Dept. of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia. 5. Dept. of Genetics, National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran.
Abstract
BACKGROUND: Ataxia with oculomotor apraxia type 1 (AOA1) shows early onset with autosomal recessive inheritance and is caused by a mutation in the aprataxin (APTX) gene encoding for the APTX protein. METHODS: In this study, a 7-year-old girl born of a first-cousin consanguineous marriage was described with early-onset progressive ataxia and AOA, with increased cholesterol concentration and decreased albumin concentration in serum. PCR and direct DNA sequencing was performed after DNA extraction. RESULTS: Sequencing analysis revealed a novel homozygous deletion in c.643 and A>T single nucleotide polymorphism in c.641 in exon 6 of the APTX gene [ENST00000379825]. CONCLUSION: It seems that this region of exon 6 is probably a hot spot; however, no deletions have been reported in exon 6 yet.
BACKGROUND:Ataxia with oculomotor apraxia type 1 (AOA1) shows early onset with autosomal recessive inheritance and is caused by a mutation in the aprataxin (APTX) gene encoding for the APTX protein. METHODS: In this study, a 7-year-old girl born of a first-cousin consanguineous marriage was described with early-onset progressive ataxia and AOA, with increased cholesterol concentration and decreased albumin concentration in serum. PCR and direct DNA sequencing was performed after DNA extraction. RESULTS: Sequencing analysis revealed a novel homozygous deletion in c.643 and A>T single nucleotide polymorphism in c.641 in exon 6 of the APTX gene [ENST00000379825]. CONCLUSION: It seems that this region of exon 6 is probably a hot spot; however, no deletions have been reported in exon 6 yet.
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