In order to prevent infection for human papillomavirus (HPV), which is known as a major cause of cervical cancer development, 3 types of HPV vaccine such as quadri-valent, bi-valent, nona-valent HPV vaccines are currently marketed in Korea. Of these, ...
In order to prevent infection for human papillomavirus (HPV), which is known as a major cause of cervical cancer development, 3 types of HPV vaccine such as quadri-valent, bi-valent, nona-valent HPV vaccines are currently marketed in Korea. Of these, qHPV and bHPV vaccines have been included in the National Immunization Program (NIP) in Korea since June 2016, and free vaccination for adolescent girls aged above 12 has been supported[21]. Nevertheless, the proportion of first HPV vaccination was only 68.4% in 2018 [22], the necessity for research to establish safety for HPV vaccines is growing.
The purpose of this study is to contribute to the consolidation of the safety profile for qHPV and bHPV vaccine. In this study, the rationale for additional sudies on safety information are intended to be prepared by analyzing on times series, characteristic of adverse events, and signals and by comparing with Korean lebel for qHPV and bHPV vaccine using Korea Institute of Drug Safety KAERS Database (KIDS-KD).
The KIDS-KD of all vaccines reported through KAERS from 2007 to 2016 is utilized in this study. From this data, combinations of vaccine-adverse event are generated, and current state and report characteristics of adverse events for qHPV and bHPV vaccine are analyzed. Moreover, the signals are derived from data-mining method, and confirmed by comparing with the Korean label.
The number of report of adverse event for women are overwhelmingly high in both HPV vaccines (93.82%, 97.99% respectively; hereinafter qHPV and bHPV vaccine are specified in order), and the report of age group from 10 to 27 year are the highest (37.86%, 33.45% respectively) in all age group. In the case of qHPV vaccine, the Spontaneous report is the highest (1,996 cases, 74.31%); and in the case of bHPV vaccine, the rate of Research (PMS) is the highest (1,011 cases, 50.70%). In both HPV vaccines, the highest reporting is by Doctor (39.91%, 66.90%, respectively), and the highest reporting is by Manufacturer (importer) (89.13%, 93.53%, respectively).
The frequency of the adverse event corresponding to Application site disorders for both HPV vaccines is similarly the highest based on the WHOART SOC level, but is relatively higher in the bHPV vaccine (30.36%, 35.02%). According to the WHOART PT level of Application site disorders, Injection site pain, Injection site reaction, Injection site pruritus and Injection site rash are high in both HPV vaccines in order.
Only the cases meeting all the criteria of 3 indice of PRR, ROR, and IC are determined as signal. Of signals not included in Korean label, the following adverse events are reported that their causality falls under either Certain, Probable, or Possible: Oedema, Tremor, Hypotension, Circulatory failure, Vision abnormal, Coma, Hypotonia in the qHPV vaccine; Hypokinesia, Rash maculo-papular, Arthropathy, Temperature changed sensation, Depersonalization, Eye pain in the bHPV vaccine. The difference is considered to be caused by immune response induced from adjuvant contained each vaccine. Therefore, in-depth studies may be needed on the mechanism between the immune response by adjuvant from vaccine and adverse events.