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Introduction: The genital infection by the human papillomavirus (HPV) can result in a sexually transmitted disease associated with precursor lesions for carcinogenesis in the genital tract. In recent years, evidence was accumulated defining HPV as the etiologic agent of cervical cancer; however, the etiology of penile cancer is still open and lacks studies. This study aims to contribute to the epidemiologic knowledge regarding the prevalence of this virus in malignant lesions of the male genital tract, using the DNA microarray assay, a technique that allows the simultaneous detection of up to 32 different HPV genotypes. Objective: The aim of this study was to investigate the presence of HPV in penile malignant lesions, to genotype HPV, when present, to correlate the HPV infection and its genotypes with the histopathological data. Methods: A total of 112 penile cancer samples was collected in a cross-sectional study. The detection methodology consisted of (1) detecting the presence of HPV DNA by the polymerase chain reaction (PCR) technique with generic primers, (2) genotyping the HPV using the DNA microarray assay, and (3) correlation of the histopathology, tumor invasiveness, and the dispersion of malignant cells by the lymph nodes with the presence of HPV. Results: The HPV prevalence was 57.1% (64). The most prevalent genotype was the HPV16 (32.8%), followed by HPV6 (23.4%); HPV18, HPV35, and HPV45 (12.5%); HPV31 (10.9%); and HPV70 (7.8%). Of the HPV-positive samples, 25% were mixed infections. Conclusion: The role of the HPV infection was significant within the multifactorial etiology of penile cancer. There was statistical significance between the lesion invasiveness and the presence of high-risk HPV infection. Thus, genotype surveillance can promote a better understanding of the role of HPV genotypes in male cancer development, and the DNA microarray assay proved to be an efficient tool for both the epidemiological study and the diagnostics of the HPV. |
