Pathway-based association analyses identified TRAIL pathway for osteoporotic fractures

Area of Science:

• Genetics
• Bone Metabolism
• Molecular Biology

Background:

• Hip Osteoporosis (OF) is a significant cause of morbidity and mortality.
• Previous research suggests a link between the Tumor Necrosis Factor (TNF)-Related Apoptosis-Inducing Ligand (TRAIL) pathway and bone metabolism.
• The specific role of the TRAIL pathway in hip OF pathogenesis requires further investigation.

Purpose of the Study:

• To investigate the potential association between the TRAIL pathway and hip OF.
• To identify specific genes within the TRAIL pathway that may contribute to hip OF risk.

Main Methods:

• Genome-wide genotype data from Affymetrix 500K SNP arrays were analyzed.
• Pathway-based association analyses were conducted.
• The study included 700 elderly Chinese Han subjects (350 with hip OF and 350 controls).

Main Results:

• The TRAIL pathway showed a significant association with hip OF (p=0.01).
• Seven genes within the pathway were nominally associated with hip OF, with TNFSF10 (TRAIL) being the most significant (p=1.70×10(-4)).
• Specific SNPs in genes like TNFSF10 and TNFRSF10B were associated with increased hip OF risk, while others in CFLAR, NFKB1, TNFSF11, TNFRSF11A, and TRAF3 showed protective effects.

Conclusions:

• The TRAIL pathway plays a potential role in the pathogenesis of hip OF within the Chinese Han population.
• Further functional studies are warranted to elucidate the precise mechanisms by which the TRAIL pathway influences hip OF risk.