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PLoS One. 2017 May 15;12(5):e0177775. doi: 10.1371/journal.pone.0177775. eCollection 2017.

Immuno-related polymorphisms and cervical cancer risk: The IARC multicentric case-control study.

PloS one

James McKay, Vanessa Tenet, Silvia Franceschi, Amélie Chabrier, Tarik Gheit, Valérie Gaborieau, Sandrine Chopin, Patrice H Avogbe, Massimo Tommasino, Michelle Ainouze, Uzma Hasan, Salvatore Vaccarella

Affiliations

  1. International Agency for Research on Cancer, Lyon, France.
  2. Centre International de Recherche en Infectiologie, International Center for Infectiology Research (CIRI), Lyon, France.
  3. Inserm, U1111, Lyon, France.
  4. Ecole Normale Supérieure de Lyon, Lyon, France.
  5. University Lyon 1, Lyon, France.
  6. CNRS, UMR5308, Lyon, France.
  7. Laboratoire d'Immunologie, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Lyon, France.

PMID: 28505207 PMCID: PMC5432183 DOI: 10.1371/journal.pone.0177775

Abstract

A small proportion of women who are exposed to infection with human-papillomavirus (HPV) develop cervical cancer (CC). Genetic factors may affect the risk of progression from HPV infection to cervical precancer and cancer. We used samples from the International Agency for Research on Cancer (IARC) multicentric case-control study to evaluate the association of selected genetic variants with CC. Overall, 790 CC cases and 717 controls from Algeria, Morocco, India and Thailand were included. Cervical exfoliated cells were obtained from control women and cervical exfoliated cells or biopsy specimens from cases. HPV-positivity was determined using a general primer GP5+/6+ mediated PCR. Unconditional logistic regression was used to estimate odds ratios (OR) and corresponding 95% confidence intervals (CI) of host genotypes with CC risk, using the homozygous wild type genotype as the referent category and adjusting by age and study centre. The association of polymorphisms with the risk of high-risk HPV-positivity among controls was also evaluated. A statistically significant association was observed between single nucleotide polymorphism (SNP) CHR6 rs2844511 and CC risk: the OR for carriers of the GA or GG genotypes was 0.70 (95% CI: 0.43-1.14) and 0.61 (95% CI: 0.38-0.98), respectively, relative to carriers of AA genotype (p-value for trend 0.03). We also observed associations of borderline significance with the TIPARP rs2665390 polymorphism, which was previously found to be associated with ovarian and breast cancer, and with the EXOC1 rs13117307 polymorphism, which has been linked to cervical cancer in a large study in a Chinese population. We confirmed the association between CC and the rs2844511 polymorphism previously identified in a GWAS study in a Swedish population. The major histocompatibility region of chromosome 6, or perhaps other SNPs in linkage disequilibrium, may be involved in CC onset.

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