This observational study was designed as a prospective epidemiological screening study. Patients who applied to the centers participating in the study, bronchiectasis was detected on at least one computed tomography of the lungs; Immunoglobulin E height and/or were found to be lymphopenic on at least one examination will be included in the study. Up-to-date data will be collected from patients who have agreed to participate in the study, and a blood sample with DBS will be taken from patients. The blood taken will be subjected to analysis for ADA metabolites. For patients with a high metabolic test, the responsible researcher will advise on clarifying the diagnosis with a genetic test other than the study. In case of formation of new information for each patient, consultation will be provided by the responsible researcher. Thus, the prevalence of ADA enzyme deficiency disease in patients with bronchiectasis, Immunoglobulin E elevation and/or lymphopenia will be evaluated. In addition, with this study, it will be scientifically demonstrated whether lymphopenia and/or Immunoglobulin E height is a parameter that facilitates the early diagnosis of patients with late-onset ADA enzyme deficiency.
Age range
18 Years – 40 Years
Sex
ALL
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
It is the determination of the prevalence of ADA enzyme deficiency
Timeframe: 2 years