This study leverages the global Dialysis Outcomes and Practice Patterns Study (DOPPS) database to generate real-world evidence on the burden of IgAN in patients who progress to kidney failure and require maintenance hemodialysis (HD). We will first aim to understand prevalence of IgAN in a global cohort of in-center HD patients. The second and third objectives aim to quantify the patient burden of IgAN using a two-step approach: first, a detailed single-arm evaluation of outcomes within the IgAN population; second, a matched comparison to the broader HD population.

Inclusion Criteria:

• Age ≥ 18 years at the time of enrollment
• Receiving in-center HD treatment at a participating dialysis facility
• Able to provide informed consent, if required by local regulations or ethics boards

Exclusion Criteria:

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This is a retrospective observational study using data from Phases 1 through 7 (1996-2023) of the DOPPS, a multinational, prospective cohort study of in-center HD patients across more than 20 countries. DOPPS collects standardized data on demographics, comorbidities, laboratory values, treatments, hospitalizations, and mortality, as well as many validated PROs. To ensure national representativeness and reduce selection bias, DOPPS uses a stratified random sampling approach to select dialysis facilities and patients within each participating country. Regional representation includes Europe, Japan, North America, China, Oceania, and the Gulf Cooperation Council (GCC).