mRNA vaccine to prevent and treat genital herpes

Nucleoside-modified mRNA vaccine for prevention and treatment of genital herpes

NIH-funded research University of Pennsylvania · NIH-11099981

An mRNA vaccine that aims to prevent genital herpes and help control outbreaks in people who are already infected.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Pennsylvania NIH-funded
Lab location1 site (Philadelphia, United States)
Project IDNIH-11099981 on NIH RePORTER

What this research studies

This project is developing an mRNA vaccine that teaches the immune system to recognize three HSV-2 proteins (gC2, gD2, gE2). The team is moving the vaccine into early human testing and is analyzing antibody responses from earlier animal studies to learn what immune responses protect against infection. They use advanced lab tools and panels of antibodies to see whether vaccine-induced antibodies block viral tricks that evade immunity, such as complement binding and Fc-mediated interference. The researchers also plan to develop the mRNA approach as a therapy to reduce outbreaks in people with existing genital herpes.

Who could benefit from this research

Good fit: Adults at risk for HSV-2 infection or adults with recurrent genital herpes who meet early-phase trial eligibility would be the main candidates for participation.

Not a fit: People with long-standing latent HSV-2 that cannot be reached by immune responses or those with severe immune suppression may not get direct benefit from the vaccine's therapeutic goals.

Why it matters

Potential benefit: If successful, the vaccine could prevent new genital herpes infections and reduce the frequency or severity of outbreaks in people already infected.

How similar studies have performed: mRNA vaccines have worked very well for other viruses like SARS-CoV-2, but developing an effective vaccine for herpes has been challenging, so this mRNA application to HSV is promising but relatively unproven.

Where this research is happening

Philadelphia, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.