Table 1

A novel variant in ATM gene causes ataxia telangiectasia revealed by whole-exome sequencing.

DatesRelevant past medical history and intervention
16.05.20178 years old boy who is a product of full term pregnancy, referred to the immunology clinic to role out any associated with primary immunodeficiency. Patient with history wide ataxic and failure to thrive.
DateSummaries initial and follow-up visitsDiagnostic testing (including dates)Interventions
2015-2016During the whole years of 2016 patient have 6-7 episodes of upper respiratory tract infectionNo exact date or specific test or other investigation that parent can recall (patient from outside Riyadh).None
2016History of diarrhea on and off in year 2016No exact or specific test or other investigation that parent can recall (patient from outside RiyadhNone
26.04.2017History wide ataxic gaitMRI Brain shows mild atrophic changes within the hemispheresNone (follow-up in the clinic)
16.05.2017Because of history of recurrent URTI as past medical historyBlood sent for FBC and differential which showed normal WBCs count and normal diff Serum immunoglobulin level: IgM=1.26g/l, IgG=10.2g/l l and Ig A=<0.25g/lNone
14.06.2017For the above history ataxia telangiectasia need to rolled outBlood sent or molecular genetics study which showed premature stop codon variant (c.5944C>T, p Gln1982*)Genetic counseling for the parents
  • MRI - magnetic resonance imaging, FBC - Full Blood Count, IgA - immunoglobulin A, IgG - immunoglobulin G, IgM - immunoglobulin M, URTI - upper respiratory tract infection, WBC - White Blood Cell