Genome-wide association studies (GWAS) have implicated single nucleotide polymorphisms (SNPs) on chromosomes 2p15, 6q25, 7p15.2, 7q21, 8q24, 10q11, 10q26, 11q13, 17q12, 17q24, 19q13, and Xp11, with prostate cancer (PCa) susceptibility and/or tumour aggressiveness, in populations of African, European, and Asian ancestry.
The objective of this study was to confirm these associations in South African Mixed Ancestry and White men. We evaluated 17 prioritised GWAS SNPs in South African cases (331 Mixed Ancestry and 155 White) and controls (178 Mixed Ancestry and 145 White). The replicated SNP associations for the different South African ethnic groups were rs7008482 (8q24) (p = 2. 45 × 10(-5)), rs6983267 (8q24) (p = 4. 48 × 10(-7)), and rs10993994 (10q11) (p = 1. 40 × 10(-3)) in Mixed Ancestry men and rs10993994 (p = 1. 56 × 10(-9)) in White men. No significant associations were observed for the analyses stratified by disease aggressiveness in the individual and the combined population group analysis. The present study demonstrates that a number of known PCa susceptibility variants may contribute to disease susceptibility in South African men. Larger genetic investigations extended to other South African population groups are warranted to confirm the role of these and other SNPs in disease susceptibility.
Prostate cancer. 2015 Aug 12 [Epub]
Pedro Fernandez, Muneeb Salie, Danielle du Toit, Andre van der Merwe
Division of Urology and Tygerberg Hospital, Stellenbosch University, P. O. Box 241, Cape Town 8000, South Africa. , SA MRC Centre for TB Research and DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Stellenbosch University, P. O. Box 241, Cape Town 8000, South Africa. , Unistel Medical Laboratories, P. O. Box 241, Cape Town 8000, South Africa. , Division of Urology and Tygerberg Hospital, Stellenbosch University, P. O. Box 241, Cape Town 8000, South Africa.