Association of IGF1R polymorphisms with kidney function-related traits

Area of Science:

• Genetics
• Nephrology
• Human Physiology

Background:

• Kidney function is crucial for maintaining bodily homeostasis.
• A genome-wide association study in Japanese individuals identified the IGF1R gene as associated with kidney function traits.
• This prior research satisfied Bonferroni significance levels for all three kidney functions studied.

Purpose of the Study:

• To investigate the association between IGF1R gene variants and kidney function in the Korean population.
• To determine if the findings from Japanese populations are replicable in Koreans.

Main Methods:

• Replication of three specific SNPs (rs28657002, rs10794486, rs4966025) within the IGF1R gene.
• Linear regression analysis of 46 SNPs in the IGF1R gene against three kidney function traits: blood urea nitrogen (BUN), creatinine, and estimated glomerular filtration rate (eGFR).
• Analysis conducted on a Korean cohort.

Main Results:

• Significant correlation found between IGF1R gene variants and kidney function traits in Koreans.
• Replication of three SNPs (rs28657002 for BUN, rs10794486 for creatinine, rs4966025 for eGFR) with high statistical significance.
• Five SNPs (rs28657002, rs10794486, rs4966025, rs12439557, rs11247372) demonstrated common significance across all three kidney function traits.
• Two SNPs (rs11857366, rs28657002) indicated a potential influence on IGF1R gene expression.

Conclusions:

• Genetic polymorphisms in the IGF1R gene are confirmed to be associated with kidney function in the Korean population.
• These findings support and extend previous research on the genetic underpinnings of kidney function.
• The study contributes to a better understanding of how individual genetic variations impact kidney function-related traits.