HPV Genotype Attribution and Disease Burden of Anal Cancer in China

Understanding the Human Papillomavirus Genotype Attribution and Disease Burden of Anal Cancer in China: A Multicenter Hospital-based Study

To demonstrate HPV prevalence and its genotype distributions in anal cancer in China and to describe demographic and clinical features of HPV-related anal cancer in China; To describe the epidemiological characteristics ,trends and of disease burden of anal cancer in China

Inclusion Criteria:

• (1) Patients diagnosed with anal cancers, (2) Patients without radiation or chemotherapy prior to specimen collection;

Exclusion Criteria:

• (1) Patients with HIV infection, (2) Patients with immunosuppression after solid organ transplantation, (3) Those who do not agree to specimen collection and testing, (4) For retrospective study cases, those who without specimen.