© 2002 by Oxford University Press
Journal of the National Cancer Institute, Vol. 94, No. 16, 1249-1253,
August 21, 2002
© 2002 Oxford University Press
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Association of Human Papillomavirus Type 58 Variant With the Risk of Cervical Cancer
Affiliations of authors: P. K. S. Chan, J. L. K. Cheung, A. F. Cheng (Department of Microbiology), C.-W. Lam (Department of Chemical Pathology), T.-H. Cheung, K. W. K. Lo (Department of Obstetrics and Gynaecology), The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China; W. W. H. Li, M. Y. M. Chan, Department of Obstetrics and Gynaecology, Queen Elizabeth Hospital, Hong Kong SAR, China.
Correspondence to: Paul K. S. Chan, MRC Path, Department of Microbiology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China (e-mail: paulkschan{at}cuhk.edu.hk).
ABSTRACT
Human papillomavirus (HPV) type 58 has been found to be prevalent among Chinese patients with cervical cancer. This study examined the oncogenic risk of HPV58 variants in Hong Kong, a southern part of China. Altogether, 1924 women were studied: 42.8% with a normal cervix, 16.2% with cervical intraepithelial neoplasia (CIN) I, 12.7% with CIN II, 20.8% with CIN III, and 7.6% with invasive cervical cancer (ICC). The overall prevalence of HPV58 was 11.4% (220) and increased statistically significantly with the severity of neoplasia (Ptrend<.001, 
2 test for trend). Among HPV58-positive women, the occurrence of E7 632C
T (T20I) and E7 760GA (G63S) variants (T20I/G63S) showed a positive trend of association with the severity of neoplasia (Ptrend<.001, 2 test for trend). HPV58 variants carrying these two substitutions showed an odds ratio (OR) for ICC of 26.79 (95% confidence interval = 10.14 to 74.72), and this OR was 6.9-fold higher than the ORs of variants without these substitutions. Patients with CIN III or ICC who were also infected with T20I/G63S variants had a statistically significant younger age at diagnosis than those infected with other variants (median age = 37 years versus 48 years; P = .038, two-sided Mann–Whitney U test). Thus, HPV58 variants carrying E7 T20I/G63S substitutions may be associated with an increased risk for cervical cancer.
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