The association of CD36 variants with polypoidal choroidal vasculopathy compared to typical neovascular age-related
Hiroaki Bessho1, Shigeru Honda, Naoshi Kondo
1Department of Surgery, Division of Ophthalmology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan.
Insights
Genetic variations in the cluster of differentiation 36 (CD36) region show differences between polypoidal choroidal vasculopathy (PCV) and typical age-related macular degeneration (tAMD). These CD36 variants may influence genetic susceptibility to these distinct forms of AMD.
Area of Science:
- Ophthalmology
- Genetics
- Molecular Biology
Background:
- Age-related macular degeneration (AMD) is a leading cause of vision loss.
- Polypoidal choroidal vasculopathy (PCV) and typical neovascular AMD (tAMD) are distinct subtypes with different underlying pathologies.
- Understanding the genetic factors differentiating PCV and tAMD is crucial for targeted therapies.
Purpose of the Study:
- To investigate the association of cluster of differentiation 36 (CD36) gene variants with PCV.
- To compare the genetic associations of CD36 variants between PCV and tAMD patients.
- To identify potential genetic markers differentiating PCV from tAMD.
Main Methods:
- Genotyping of four tag single-nucleotide polymorphisms (SNPs) in the CD36 region (rs10499862, rs3173798, rs3211883, rs3173800) in 349 Japanese AMD patients (210 PCV, 139 tAMD) and 198 controls.
- Analysis of allelic, genotypic, and haplotype frequencies of the selected SNPs.
- Comparison of SNP frequencies between PCV, tAMD, and control groups.
Main Results:
- No significant association was found between the tested CD36 SNPs and PCV alone.
- Significant differences in allelic and genotypic frequencies of rs3173798 and rs3173800 were observed between PCV and tAMD patients.
- Haplotype analysis revealed significant differences in the major haplotype (T-T-T-T) association between PCV and tAMD.
Conclusions:
- The CD36 gene region may play a role in the differential genetic susceptibility between PCV and tAMD.
- Specific CD36 variants are associated with the distinction between PCV and tAMD, suggesting different genetic underpinnings.
- Further research into CD36's role could lead to improved diagnostic or therapeutic strategies for AMD subtypes.
Purpose:
To clarify the association of cluster of differentiation 36 (CD36) variants with polypoidal choroidal vasculopathy (PCV) and compare them with those in typical neovascular age-related macular degeneration (tAMD).
Methods:
We included 349 Japanese AMD patients (210 PCV, 139 tAMD) and 198 age-matched controls. Four tag single-nucleotide polymorphisms (SNPs)-rs10499862, rs3173798, rs3211883, and rs3173800-in the CD36 region were genotyped using the TaqMan assay. Allelic and genotypic frequencies of the SNPs were tested.
Results:
Although none of the SNPs tested were associated with PCV, the allelic frequencies of rs3173798 and rs3173800 were significantly different between PCV and tAMD patients. Genotype association analysis demonstrated different associations of these two SNPs between PCV and tAMD in the genotype model. Haplotype analysis revealed that the association of the major haplotype (T-T-T-T) at four selected SNPs in CD36 differed significantly between PCV and tAMD patients.
Conclusions:
The CD36 region may be associated with the difference in genetic susceptibility for PCV and tAMD.
