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Association of megalin genetic polymorphisms with prostate cancer risk and prognosis.

ABSTRACT: Megalin, an endocytic receptor expressed by prostate epithelial cells, can internalize biologically active androgens bound to sex hormone binding globulin. Genetic variation within megalin could potentially influence levels of steroid hormone uptake.Forty haplotype-tagging single-nucleotide polymorphisms (htSNP) were analyzed in a population-based, case-control study of 553 Caucasian men who were diagnosed with prostate cancer between the ages of 40 and 64 years from the Seattle-Puget Sound region and 534 control men. Prostate cancer risk was estimated using adjusted unconditional logistic regression for both individual SNPs and haplotypes. Risks of disease recurrence/progression and prostate-specific cancer mortality were estimated using Cox proportional hazards regression.We found no strong evidence of altered risk of developing prostate cancer for any of the htSNPs when they were assessed individually or in haplotypes. However, three htSNPs were significantly associated with both disease recurrence/progression and mortality. Risk of recurrence/progression alone was also associated with five additional htSNPs, and six other htSNPS showed evidence of modification by primary androgen deprivation therapy. Two additional htSNPs were significantly associated with altered risk of death from prostate cancer.Preliminary results suggest that common genetic variation within the megalin gene could alter both risk of recurrence/progression and prostate-specific cancer mortality. In addition, androgen deprivation therapy effectiveness may be modified by the activity of this gene. To our knowledge, this is the first study that has examined polymorphisms within the megalin gene for associations with prostate cancer risk and outcomes.

SUBMITTER: Holt SK

PROVIDER: S-EPMC2675883 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature

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Association of megalin genetic polymorphisms with prostate cancer risk and prognosis.

Holt Sarah K SK Karyadi Danielle M DM Kwon Erika M EM Stanford Janet L JL Nelson Peter S PS Ostrander Elaine A EA

Clinical cancer research : an official journal of the American Association for Cancer Research 20080601 12

<h4>Purpose</h4>Megalin, an endocytic receptor expressed by prostate epithelial cells, can internalize biologically active androgens bound to sex hormone binding globulin. Genetic variation within megalin could potentially influence levels of steroid hormone uptake.<h4>Experimental design</h4>Forty haplotype-tagging single-nucleotide polymorphisms (htSNP) were analyzed in a population-based, case-control study of 553 Caucasian men who were diagnosed with prostate cancer between the ages of 40 an ...[more]

PMID: 18559602

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Project description:BackgroundTo investigate the correlation between growth arrest-specific transcript 5 (GAS5) gene polymorphism and the risk and prognosis of prostate cancer in Chinese Han population.MethodsSanger sequencing was used to analyze genotypes at the rs17359906 and rs1951625 loci of the GAS5 gene in 218 prostate cancer patients and 220 healthy controls. The follow-up period was from August 2016 to August 2019, and the relationships between GAS5 gene polymorphisms at the rs17359906 and rs1951625 loci and the recurrence-free survival rate of prostate cancer patients were analyzed.ResultsGAS5 A-allele carriers at the rs17359906 locus were 3.44 times more likely to develop prostate cancer than G-allele carriers (95% confidence interval (CI): 2.38-4.96, P < .001). Carriers of the GAS5 A allele at the rs1951625 locus had a 1.40-fold higher risk of prostate cancer than carriers of the G allele (95% CI: 1.05-1.86, P = .027). Plasma prostate-specific antigen (PSA), body mass index (BMI), and rs17359906 and rs1951625 loci were independent risk factors for prostate cancer. GAS5 AA genotype and A-allele carriers (GA + AA) at the rs1951625 locus were significantly correlated with Gleason scores ≤7 (P < .05). GAS5 genes rs17359906 G > A and rs1951625 G > A were associated with high plasma PSA levels. The recurrence-free survival rate of patients with prostate cancer with AA genotype at the rs17359906 locus of GAS5 (66.67%) was significantly lower than that of the GA genotype (76.47%), whereas the GG genotype was the highest (91.96%), and the difference was statistically significant (P = .002). The recurrence-free survival rate of patients with prostate cancer with the AA genotype at the rs1951625 locus of GAS5 (75.00%) was significantly lower than that of the GA genotype (81.82%), whereas the GG genotype was the highest (87.76%) with a statistically significant difference (P = .025).ConclusionGAS5 rs17359906 G > A and rs1951625 G > A are significantly associated with an increased risk of prostate cancer and a reduction in three-year relapse-free survival.

Dataset Information

Association of megalin genetic polymorphisms with prostate cancer risk and prognosis.

Publications

Association of megalin genetic polymorphisms with prostate cancer risk and prognosis.

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