Gene therapy for patients with retinitis pigmentosa

Phase 1/2, Safety and Efficacy Trial of BS01, a Recombinant Adeno-Associated Virus Vector Expressing ChronosFP in Patients With Retinitis Pigmentosa

Phase1; Phase2 Interventional Bionic Sight LLC · NCT04278131

This study is testing a new gene therapy to see if it can help people with retinitis pigmentosa who can only see light in one eye.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years and up
SexAll
SponsorBionic Sight LLC Industry-sponsored
Locations1 site (Teaneck, New Jersey)
Trial IDNCT04278131 on ClinicalTrials.gov

What this trial studies

This is a non-randomized, open-label Phase 1/2 dose escalation study evaluating BS01, a recombinant adeno-associated virus vector designed to express an enhanced light-sensitive channelrhodopsin gene. The study aims to assess the safety and efficacy of BS01 in patients diagnosed with retinitis pigmentosa who have bare light perception in at least one eye. Participants will receive varying doses of the treatment to determine the optimal dosage for therapeutic effect.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals with a confirmed diagnosis of retinitis pigmentosa and bare light perception in at least one eye.

Not a fit: Patients who have previously received any AAV gene therapy product or have large amplitude nystagmus may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could restore vision or improve light sensitivity in patients with retinitis pigmentosa.

How similar studies have performed: While gene therapy for retinal conditions is an emerging field, this specific approach using BS01 is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Confirmed diagnosis of retinitis pigmentosa
* At least one eye with vision no better than 20/160 visual acuity on the EDTRS scale or, for patients with peripheral vision loss, a visual field no greater than 30°.

Exclusion Criteria:

* Prior receipt of any AAV gene therapy product
* Large amplitude nystagmus

Where this trial is running

Teaneck, New Jersey

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Retinitis Pigmentosa
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.