Investigating the effects of N-acetylcysteine on vision loss in retinitis pigmentosa

NAC Attack AOSLO Reading Center

NIH-funded research University of California, San Francisco · NIH-11043444

This study is looking at whether a supplement called N-acetylcysteine can help slow down vision loss in people with retinitis pigmentosa by protecting the eye from damage, and it’s open to patients who want to see if this treatment might improve their eyesight.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionUniversity of California, San Francisco NIH-funded
Lab location1 site (San Francisco, United States)
Project IDNIH-11043444 on NIH RePORTER

What this research studies

This research focuses on retinitis pigmentosa (RP), a condition that leads to progressive vision loss and blindness due to the degeneration of photoreceptors in the eye. The study aims to evaluate the effectiveness of N-acetylcysteine (NAC), an antioxidant therapy, in slowing the progression of RP by reducing oxidative stress that contributes to photoreceptor death. Patients will be enrolled in a multicenter, randomized, placebo-controlled trial to assess improvements in visual acuity and macular sensitivity. The findings could enhance our understanding of the mechanisms behind cone degeneration in RP and potentially lead to new treatment options.

Who could benefit from this research

Good fit: Ideal candidates for this research are individuals diagnosed with retinitis pigmentosa who are experiencing progressive vision loss.

Not a fit: Patients with other forms of vision loss unrelated to retinitis pigmentosa may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could provide a new therapeutic approach to slow vision loss in patients with retinitis pigmentosa.

How similar studies have performed: Previous studies, such as the FIGHT-RP trial, have shown promising results with NAC in improving visual function in RP patients, indicating potential for success in this multicenter trial.

Where this research is happening

San Francisco, 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 2026-06-10 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.