Glomerular Hyperfiltration and Cancer: A Nationwide Population-Based Study.

BACKGROUND

Glomerular hyperfiltration is associated with all-cause mortality. Herein, we evaluated the association between glomerular hyperfiltration and the development of cancer, the most common cause of death, in an Asian population.

METHODS

We retrospectively reviewed the National Health Insurance Service database of Korea for people who received national health screenings from 2012 to 2013. Glomerular hyperfiltration was defined as the 95th percentile and greater after stratification by sex and age decile. We performed a multivariate Cox regression analysis using glomerular hyperfiltration at the first health screening as the exposure variable and cancer development as the outcome variable to evaluate the impact of glomerular hyperfiltration on the development of cancer.

RESULTS

A total of 1,953,123 examinations for patients with a median follow-up time of 4.4 years were included in this study. Among the 8 different site-specific cancer categories, digestive organs showed significant associations between glomerular hyperfiltration and cancer. The population with glomerular hyperfiltration showed an increased risk for stomach cancer [adjusted hazard ratio (aHR) = 1.22], colorectal cancer (aHR = 1.16), and liver or intrahepatic malignancy (aHR = 1.35).

CONCLUSIONS

Glomerular hyperfiltration was associated with an increased risk for the development of cancer in specific organs, such as the stomach, colorectum, and liver and intrahepatic organ.

IMPACT

Glomerular hyperfiltration needs to be considered a significant sign of the need to evaluate the possibility of hidden adverse health conditions, including malignancies.