On the evening of March 19, Chengda Bio issued an announcement that the recombinant 15-valent human papillomavirus vaccine (Escherichia coli) (hereinafter referred to as "this vaccine" or "15-valent HPV vaccine") jointly developed by the company and Beijing Kangle Guardian Biotechnology Co., Ltd. (hereinafter referred to as "Kangle Guardian") has completed Phase I clinical trials and will start Phase II clinical trials.

The 15-valent HPV vaccine jointly developed by Chengda Bio and Kangle Guardian is the highest-priced HPV vaccine that has been marketed or approved by IND worldwide so far. This vaccine covers all high-risk HPV types defined by IARC and can increase the protection rate of cervical cancer to more than 96%. This vaccine is used to prevent persistent infection caused by human papillomavirus (HPV) types 6, 11, 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59 and 68, and diseases such as CIN, VIN, VaIN, AIN, cervical cancer, vaginal cancer, vulvar cancer, anal cancer and genital warts (condyloma acuminatum) caused by infection with the above HPV types.

Chengda Bio reminds that given the long development cycle of vaccine products and the need to go through many complex approval procedures, it is very susceptible to various uncertain factors and there is a high risk.

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