A recent study from the Karolinska Institutet has unveiled a promising web-based tool designed to aid in the early detection and prevention of chronic kidney disease (CKD). Published in Kidney International, the research highlights the significance of subtle variations in kidney function, even within normal ranges, in identifying individuals at risk of developing this condition. Chronic kidney disease currently affects approximately 10–15% of adults globally and is projected to rank among the top five causes of years of life lost by 2040.
The challenge in addressing CKD lies in the late diagnoses many patients receive, often only after losing more than half of their kidney function. To bridge this gap, researchers have created population-based distributions for estimated glomerular filtration rate (eGFR), the most recognized measure of kidney function. This initiative aims to empower healthcare professionals to recognize individuals at risk and take preventive measures early.
Innovative Approach to Kidney Health
The study’s first author, Yuanhang Yang, a postdoctoral researcher at the Department of Clinical Science and Education at Södersjukhuset, explained their inspiration drawn from pediatric growth and weight charts. These charts effectively help clinicians identify children at risk of obesity or undergrowth. The team has made their eGFR distribution charts publicly accessible to healthcare professionals, complemented by a web-based calculator developed by Ph.D. student Antoine Creon. This tool allows for straightforward comparisons of a patient’s eGFR with population norms based on age.
The extensive study examined over 1.1 million adults in the Stockholm region, encompassing roughly 80% of the population aged between 40 and 100 years. Nearly seven million eGFR tests conducted from 2006 to 2021 were utilized to construct age- and sex-specific distributions. The findings reveal that deviations from the median eGFR for a person’s age and sex correlate with poorer health outcomes. Individuals with an eGFR below the 25th percentile face a significantly higher risk of requiring dialysis or kidney transplantation.
Addressing Awareness Gaps in Healthcare
The study also highlights a concerning lack of awareness within the healthcare sector. Among patients who exhibited a seemingly normal eGFR above 60 ml/min/1.73 m² but fell below the 25th percentile, only a quarter had undergone further testing for urinary albumin. This test is crucial for identifying early kidney damage.
Professor Juan Jesús Carrero from the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet emphasized the missed opportunities for intervention. For instance, a 55-year-old woman with an eGFR of 80 might not raise any alarms among clinicians despite her score being in the 10th percentile for her age group. This indicates a threefold increased risk of requiring dialysis in the future.
The population-based eGFR distributions and their associated health outcomes present a vital opportunity for the early identification and primary prevention of chronic kidney disease. With this innovative approach, healthcare providers may significantly improve patient outcomes and reduce the burden of CKD in the coming years.
