A novel variant in ATM gene causes ataxia telangiectasia revealed by whole-exome sequencing
Noufa A Alonazi1, Khalid J Hundallah, Amal M Al Hashem
1Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Kingdom of Saudi Arabia.
Abstract:
Ataxia-Telangiectasia (A-T) is an autosomal recessive disorder caused by variants in ATM gene and characterized by progressive neurologic impairment, cerebellar ataxia, and oculo-cutaneous telangiectasia. Immunodeficiency with a recurrent sinopulmonary infections are observed in patients with A-T. Here, we report a novel stop codon variant, c.5944 C>T (p.Gln1982*), revealed by whole-exome sequencing in a 9-year old boy. He presented with recurrent upper respiratory tract infections, failure to thrive, developmental delay, ataxic gait, and bulbar telangiectasia.
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