Researchers looked back at the medical records of 259 Hispanic/Latinx adults with a confirmed diagnosis of IgA nephropathy (IgAN), a type of kidney disease. The patients were part of the Kaiser Permanente Southern California health system. The study aimed to describe how their kidney function changed over time.
At diagnosis, the median kidney function (eGFR) was 56 ml/min, and the median level of protein in urine was 1.8 g/g. Over a follow-up period, the average annual decline in kidney function was -4.5 ml/min. About 31% of patients experienced a rapid decline, defined as losing more than 5 ml/min of function per year. The study also reported that the median time to a major kidney problem, like a 50% drop in function or kidney failure, was 2.8 years.
This was a retrospective study, meaning it analyzed past data. It describes what happened in this specific group but cannot explain why it happened or prove what caused the decline. It did not compare these patients to people of other ethnicities or backgrounds, so we don't know if these rates are higher or lower. The results provide a snapshot of disease progression in this community, which can help inform future research and clinical awareness.