Prophylactic HPV vaccination in HPV-related gynecologic cancers: European Society of Gynecological Oncology (ESGO) prevention committee opinion.

Many clinicians recommend that patients diagnosed with HPV-related gynecologic cancers receive prophylactic HPV vaccination at the time of cancer diagnosis or after cancer treatment. In view of the large use of such practice, we aimed to assess the literature evidence supporting the use of prophylactic HPV vaccines after diagnosis or treatment of HPV-related gynecologic cancers. Women who develop HPV-related cervical, vaginal, and vulvar cancers represent a subgroup of patients who may be particularly sensitive to HPV infection and re-acquire infections. The rationale that the use of prophylactic HPV vaccination at the time or after treatment for cervical, vaginal, and vulvar cancers might reduce the risk of future HPV-related diseases might be explained by the data coming from the use of HPV vaccination after treatment of pre-invasive disease; however, the evidence on the use of HPV vaccination in the setting of HPV-related gynecologic cancers is currently absent. In this context, observational and experimental studies document an important drop in effectiveness of HPV vaccination by age. Physicians should be aware of catch-up programs in their countries and should be ready to counsel patients about prophylactic HPV vaccine efficacy according to their age. In general, no evidence exists supporting the use of prophylactic HPV vaccine in patients diagnosed with HPV-related gynecologic cancers; therefore, the European Society of Gynecological Oncology (ESGO) prevention committee opinion is to counsel these patients as any HPV-related non-gynecologic cancer (such as anal or oropharyngeal cancer) and non-cancer patient, suggesting vaccination according to patient's age and prognosis, knowing there is a decrease of efficacy with increasing age. Studies on the use of prophylactic HPV vaccine in patients diagnosed with HPV-related gynecologic cancers are strongly needed.