Human Papillomavirus Type 31 L1 Protein Vaccine
The L1 Protein, Human Papillomavirus Type 31 Vaccine is a prophylactic vaccine designed to prevent infection by HPV type 31, a high-risk strain associated with cervical, anal, and oropharyngeal cancers. It contains virus-like particles (VLPs) composed of the HPV L1 capsid protein to stimulate immune protection against the targeted HPV type. This vaccine would be used as part of a comprehensive HPV prevention strategy.
A vaccine targeting HPV type 31 using L1 protein virus-like particles to prevent associated cancers.
Key facts at a glance
- RxNorm
- 1596930
- Generic
- L1 Protein, Human Papillomavirus Type 31 Vaccine
- Class
- unclassified
- Brands
- Gardasil 9
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- prefilled syringe, injection
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Prevention of infection and related diseases caused by Human Papillomavirus type 31, including cervical dysplasia, cervical cancer, and other HPV-31-associated malignancies. May be used alongside other HPV type-specific vaccines for broader protection.
The vaccine contains recombinant L1 capsid proteins that self-assemble into virus-like particles (VLPs). These non-infectious VLPs stimulate the immune system to produce neutralizing antibodies against HPV type 31, providing protection before potential exposure to the virus.
Like other HPV vaccines, this is a prophylactic vaccine and does not treat existing infections or lesions. Vaccination is most effective when administered before sexual debut and exposure to HPV. Standard HPV vaccination schedules typically involve 2-3 doses. As a monovalent or component vaccine, it would typically be combined with other HPV type antigens in practice.
Official drug label
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 29, 2026. · Read our editorial policy