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Prognostic significance of serum antibodies to human papillomavirus-16 E4 and E7 peptides in cervical cancer

Prognostic significance of serum antibodies to human papillomavirus-16 E4 and E7 peptides in cervical cancer

Cancer 74(8): 2307-2313

Background: The objective of this study was to investigate the prognostic significance of serum antibodies to human papillomavirus (HPV)-16 peptides in patients with squamous cell cervical cancer. Methods: Pretreatment sera from 78 patients and 198 control women were tested by an enzyme-linked immunosorbent assay technique for reactivity with HPV-16 E4 (E401p) and E7 (E701p) synthetic peptides. The presence and serum level of these antibodies were correlated with tumor stage, histologic features. and prognostic parameters. Results: The median follow-up was 65 months (range, 6-97 months). Antibodies to E401p peptide were found in 5 of the 198 (3%) control subjects, 4 of the 43 (9%) patients with low tumor stage (International Federation of Gynecology and Obstetrics (FIGO) Ia, Ib, IIa), and 7 of the 35 (20%) patients with advanced tumor stage (FIGO IIb, III, IVa). Antibodies to E701p were found in 25 (13%), 11 (26%), and 11 (31%) women, respectively. The differences between patients and control subjects were significant (P lt 0.002). Seropositivity against these peptides showed no correlation with tumor stage. Antibody levels to both peptides were significantly higher in patients compared with control subjects (P lt 0.05). Furthermore, antibody levels to E401p were higher in patients with advanced tumor stage versus patients with low tumor stage (P = 0.0097). Such a relation was not found for anti-E701p antibodies. In the univariate analysis, a high level of anti-E701p antibodies was associated with a shorter disease free interval (P = 0.012) and poor survival (P = 0.049). However, this variable possessed no prognostic value after adjusting for FIGO stage and tumor size. Conclusions: The authors' findings indicate that the prognostic significance of serum antibodies to the HPV-16 E4 and E7 peptides used in this study of patients with cervical cancer is limited.

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Accession: 009254684

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PMID: 7922982

DOI: 10.1002/1097-0142(19941015)74:8<2307::aid-cncr2820740815>3.0.co;2-x

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