Basic discovery and clinical trials in diabetic kidney disease (DKD) have continued to be reported in 2023 despite the disruption of research activity by COVID-19 in recent years. Advances in clinical trials and emerging ways to diagnose, monitor and treat DKD dominate the current literature.

Sex differences in immune cell function and immune responses affect the development and outcome of diverse diseases. Here, the authors review current understanding of sex differences in immunity. They describe the key mechanisms that mediate sex differences in immune responses and discuss the functional relevance of such differences for immune-related diseases.

Emerging evidence suggests that cells resident within organs — both immune and parenchymal — can facilitate the instigation and propagation of tissue injury. In this Review, the authors discuss findings that suggest that kidney parenchymal cells provide structural immunity to the kidney through the regulation of immune-relevant processes, with consequences for kidney inflammation and injury.

Improved understanding of kidney disease from a sex- and gender-specific perspective is needed to improve patient care. Here, the authors discuss differences in the epidemiology, management and outcomes of acute kidney injury, chronic kidney disease and kidney failure in men and women.