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Human Papillomavirus 16 E6 Antibodies in Individuals without Diagnosed Cancer: A Pooled Analysis

Lookup NU author(s): Dr Paul Brennan


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© 2015 AACR. Background: The increasing incidence of oropharyngeal cancer in many developed countries has been attributed to human papillomavirus type 16 (HPV16) infections. Recently, HPV16 E6 serology has been identified as a promising early marker for oropharyngeal cancer. Therefore, characterization of HPV16 E6 seropositivity among individuals without cancer is warranted. Methods: A total of 4,666 controls were pooled from several studies of cancer and HPV seropositivity, all tested within the same laboratory. HPV16 E6 seropositive controls were classified as having (i) moderate [mean fluorescent intensity (MFI) ≥ 484 and <1,000] or (ii) high seroreactivity (MFI ≥1,000). Associations of moderate and high HPV16 E6 seroreactivity with (i) demographic risk factors; and seropositivity for (ii) other HPV16 proteins (E1, E2, E4, E7, and L1), and (iii) E6 proteins from non-HPV16 types (HPV6, 11, 18, 31, 33, 45, and 52) were evaluated. Results: Thirty-two (0.7%)HPV16 E6 seropositive controls were identified; 17 (0.4%) with moderate and 15 (0.3%) with high seroreactivity. High HPV16 E6 seroreactivity was associated with former smoking [odds ratio (OR), 5.5; 95% confidence interval (CI), 1.2-51.8], and seropositivity againstHPV16 L1 (OR, 4.8; 95% CI, 1.3-15.4); E2 (OR, 7.7; 95% CI, 1.4-29.1); multiple HPV16 proteins (OR, 25.3; 95% CI, 2.6-119.6 for three HPV16 proteins beside E6) and HPV33 E6 (OR, 17.7; 95% CI, 1.9-81.8). No associations were observedwithmoderateHPV16 E6 seroreactivity. Conclusions: High HPV16 E6 seroreactivity is rare among individuals without diagnosed cancer and was not explained by demographic factors. Impact: Some HPV16 E6 seropositive individuals without diagnosedHPV-drivencancer,especiallythosewithseropositivityagainst other HPV16 proteins, may harbor a biologically relevant HPV16 infection. Cancer Epidemiol Biomarkers Prev; 24(4); 683-9.

Publication metadata

Author(s): Lang Kuhs KA, Anantharaman D, Waterboer T, Johansson M, Brennan P, Michel A, Willhauck-Fleckenstein M, Purdue MP, Holcatova I, Ahrens W, Lagiou P, Polesel J, Simonato L, Merletti F, Healy CM, Kjaerheim K, Conway DI, Macfarlane TV, Thomson P, Castellsague X, Znaor A, Black A, Huang W-Y, Krogh V, Trichopoulou A, Bueno-De-Mesquita HBAS, Clavel-Chapelon F, Weiderpass E, Ekstrom J, Riboli E, Tjonneland A, Sanchez M-J, Travis RC, Hildesheim A, Pawlita M, Kreimer AR

Publication type: Article

Publication status: Published

Journal: Cancer Epidemiology, Biomarkers and Prevention

Year: 2015

Volume: 24

Issue: 4

Pages: 683-689

Print publication date: 01/04/2015

Online publication date: 26/01/2015

Acceptance date: 01/01/1900

ISSN (print): 1055-9965

ISSN (electronic): 1538-7755

Publisher: American Association for Cancer Research Inc.


DOI: 10.1158/1055-9965.EPI-14-1217


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