Novel Single Base Pair Deletion in ATM Cause Ataxia Telangiectasia in an Iranian Proband

Ataxia-telangiectasia is a rare disorder with neurological manifestations, caused by mutations in atm gene. this gene produces a serine/threonine protein kinase, an activator of the dna damage response in the face of dna dsbs, which phosphorylates downstream substrates, integrating with dna repair procedure. most atm mutations are private mutations and, there are no mutational hotspots in the atm gene. this study tries to unveil a new mutation in this gene in an 8 years old a-t patient. this mutation led to fundamental alterations in atm protein structure and representation of at.