The study aimed to determine the predictive capabilities of the Gastrointestinal Symptom Rating Scale (GSRS) for assessing the effectiveness of eradication therapy in Helicobacter pylori (HP) infected patients with type 2 diabetes mellitus. The study involved 60 patients of both sexes with a diagnosis of type 2 diabetes mellitus and chronic HP-associated gastritis, the average age of patients was 61.9 years, average duration of type 2 diabetes was 10.1 years. For statistical analysis of the data, we used the method of constructing ROC curves, which allowed us to identify prognostic factors (in this case, gastroenterological syndromes, such as abdominal pain, refl ux, indigestion, diarrhea and constipation) that influence the effectiveness of eradication therapy in patients with type 2 diabetes. It was found that high values of refl ux and indigestion syndromes scales of the GSRS are associated with the probability of low eradication therapy response in patients with type 2 diabetes, i.e. these syndromes can act as complicating factors for the elimination of Helicobacter pylori. The obtained data suggest the need for screening diagnostics of Helicobacter pylori, clinical manifestations of gastrointestinal pathology and subsequent etiological and pathogenetic treatment.