ALKBH1 Gene rs6494 T>A Polymorphism Decreases Wilms Tumour Risk in Chinese Children

Area of Science:

• Oncology
• Genetics
• Molecular Biology

Background:

• Wilms tumour (WT) is the most common pediatric renal cancer.
• The genetic underpinnings of WT are still being elucidated.
• The demethylase ALKBH1's role in WT has not been previously investigated.

Purpose of the Study:

• To explore the association between genetic variants of the ALKBH1 gene and the risk of developing Wilms tumour in Chinese children.
• To identify specific ALKBH1 polymorphisms that may influence WT susceptibility.

Main Methods:

• A case-control study involving 414 WT patients and 1199 healthy controls from China.
• Genotyping of three ALKBH1 polymorphisms (rs1048147, rs6494, rs176942) using the TaqMan assay.
• Expression Quantitative Trait Loci (eQTL) analysis to assess gene expression changes.

Main Results:

• The rs6494 T>A polymorphism in ALKBH1 was significantly associated with a reduced risk of Wilms tumour.
• This protective effect was more pronounced in younger children (under 18 months), males, and those with advanced clinical stages (III and III-IV).
• eQTL analysis indicated that rs6494 T>A correlates with decreased ALKBH1 expression and increased SNW1 and ADCK1 expression.

Conclusions:

• The rs6494 T>A polymorphism of the ALKBH1 gene represents a novel susceptibility locus for Wilms tumour.
• This discovery provides valuable insights into the genetic etiology of Wilms tumour.
• Understanding these genetic factors could aid in risk assessment and personalized medicine approaches for WT.