The c.3576G>A (p.K1192=) was the most common homozygous pathogenic ATM variant (33.33%) that was associated with milder phenotype of ataxia telangiectasia (AT) with the onset of age of 3.
Compared with 51 patients with classic A-T from the Dutch cohort, patients with <i>ATM</i> c.3576G>A had a longer survival and were less likely to develop cancer, respiratory disease or immunodeficiency.