Gene editing to durably control genital herpes (HSV-2)

Meganuclease-mediated gene editing for durable control of HSV-2 infection

NIH-funded research Caladan Therapeutics, INC. · NIH-11161579

This project uses a harmless AAV virus to deliver specialized gene-cutting enzymes aimed at removing latent HSV-2 from nerve cells in adults with genital herpes.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionCaladan Therapeutics, INC. NIH-funded
Lab location1 site (Vestavia Hills, United States)
Project IDNIH-11161579 on NIH RePORTER

What this research studies

I have genital herpes and this project tries to remove the virus hiding in nerve cells using engineered enzymes called meganucleases delivered by adeno-associated virus (AAV). Researchers will pick and optimize an HSV-2-specific meganuclease in lab tests and evaluate delivery and activity in preclinical models. The team builds on earlier work that removed most latent HSV-1 in animals and will adapt and test the approach for HSV-2. This Phase I STTR focuses on designing a safe, specific AAV-based gene-editing therapy as a step toward future human trials.

Who could benefit from this research

Good fit: Ideal candidates would be adults (21+) with recurrent genital HSV-2 infection who are interested in a potential one-time gene-based approach to reduce recurrence and transmission.

Not a fit: People who only have HSV-1, are under 21, are pregnant, or have contraindications to viral-vector gene therapies may not benefit from or be eligible for this work.

Why it matters

Potential benefit: If successful, this approach could substantially reduce or eliminate latent HSV-2 in nerve cells, lowering outbreaks and the risk of transmission.

How similar studies have performed: Related AAV-delivered meganuclease work eliminated up to 97% of latent HSV-1 DNA in animal models, but applying this gene-editing approach to HSV-2 and to humans is novel and untested.

Where this research is happening

Vestavia Hills, 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.