Genome-wide association study for rotator cuff tears identifies two significant single-nucleotide polymorphisms

Area of Science:

• Genetics
• Orthopedics
• Molecular Biology

Background:

• The exact cause of rotator cuff disease remains unclear, but genetic predisposition is suspected.
• Limited research exists on specific genes linked to rotator cuff tears.
• This study aimed to identify genetic variants associated with rotator cuff tearing.

Purpose of the Study:

• To conduct a genome-wide association study (GWAS) to identify genes associated with rotator cuff tearing.
• To analyze a dataset of rotator cuff tear cases and population controls.

Main Methods:

• Utilized a GWAS approach with 311 full-thickness rotator cuff tear cases and 2641 controls.
• Genotyping was performed using the Illumina 5M single-nucleotide polymorphism (SNP) platform.
• Statistical analysis identified significant SNPs using GEMMA software and Bonferroni correction.

Main Results:

• Two significantly associated SNPs were identified: rs820218 in SAP30BP (chromosome 17q25) and rs12527089 in SASH1 (chromosome 6q24).
• The association with SAP30BP had a P-value of 3.8E-9, and with SASH1 had a P-value of 1.9E-7.

Conclusions:

• This GWAS is the first to use a dense SNP set to identify genetic factors in rotator cuff tearing.
• SAP30BP and SASH1 genes, implicated in apoptosis, are significantly associated with rotator cuff tears.
• Identifying these genetic variants may help predict individuals at risk for developing rotator cuff disease.