A Phase 1/2 Study in Healthy Volunteers and Participants With Autosomal Dominant Retinitis Pigmentosa (RHO-adRP)

September 14, 2026 updated by: Octant, Inc.

A Phase 1/2, First-in-Human Study to Assess the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Efficacy of OCT-980 in Healthy Volunteers and Participants With Autosomal Dominant Retinitis Pigmentosa

This integrated Ph1/2 clinical study is to assess the safety, tolerability and pharmacokinetics (PK), pharmacodynamics (PD) and efficacy of OCT-980 in healthy volunteers and participants with RHO-adRP.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Octant, Inc. is evaluating OCT-980, an oral small molecule corrector for the treatment of patients with rhodopsin (RHO)-associated autosomal dominant retinitis pigmentosa (RHO-adRP). There is no known cure and no currently approved therapy for RHO-adRP, a disease of the retina characterized by progressive loss of vision.

This study is comprised of a Phase 1a in healthy volunteers, which was conducted in Australia and is now complete.

The phase 1b/2 study is an open-label, multi-center multiple ascending dose escalation (MAD) to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and efficacy of multiple-ascending doses of OCT-980 for up to 48 weeks, in participants with a genetic diagnosis of Rhodopsin-associated, autosomal dominant Retinitis Pigmentosa (RP).

RHO-adRP participants are currently being recruited for the phase 1b/2 study in the US.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
18

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Phase 1b/2 is active. Inclusion

Phase 1b/2 (Multiple Ascending Dose Escalation in RHO-adRP Patients) Inclusion:

  • Participants must have a diagnosis of Rhodopsin-associated, autosomal dominant Retinitis Pigmentosa confirmed by a genetic test that is implemented in accordance with the relevant national requirements
  • Male or female greater than or equal to age 18 (inclusive) at the time of signing the informed consent form
  • Have a body weight >50kg, with a body mass index (BMI) from 18.0 to 35.0 kg/m^2 (inclusive) at screening
  • Best Corrected Visual Acuity (BCVA) using the Early Treatment Diabetic Retinopathy Study (ETDRS) > 55
  • Other than their diagnosis of RHO-adRP, be in good general health, as determined by the Investigator
  • Have sufficient venous access to allow blood sampling for pharmacokinetic analysis and safety laboratory samples

Phase 1b/2 (Multiple Ascending Dose Escalation in RHO-adRP Patients) Exclusion:

  • Females who are pregnant or breastfeeding
  • Evidence of any other significant ocular (other than RHO-adRP) and non-ocular disease/ disorder
  • Lifetime history of ocular surgery
  • Any prior or current ophthalmologic gene therapy
  • Has a history of major surgery, severe trauma, or bone fracture within 12 weeks before the first dose of the investigational product or planned surgery within 4 weeks after the end of the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Phase 1b/2: OCT-980 Cohort 1
OCT-980 tablets administered orally once daily.
Drug: Phase 1b/2: Cohort 1 - OCT-980 Tablet
OCT-980 tablets administered orally once daily at dose levels specified in the protocol
Experimental: Phase 1b/2: OCT-980 Cohort 2
OCT-980 tablets administered orally once daily.
Drug: Phase 1b/2: Cohort 2 - OCT-980 Tablet
OCT-980 tablets administered orally once daily at dose levels specified in the protocol
Experimental: Phase 1b/2: OCT-980 Cohort 3
OCT-980 tablets administered orally once daily.
Drug: Phase 1b/2: Cohort 3 - OCT-980 Tablet
OCT-980 tablets administered orally once daily at dose levels specified in the protocol
Experimental: Phase 1b/2: OCT-980 Cohort 4
OCT-980 tablets administered orally once daily.
Drug: Phase 1b/2: Cohort 4 - OCT-980 Tablet
OCT-980 tablets administered orally once daily at dose levels specified in the protocol
Experimental: Phase 1b/2: OCT-980 Cohort 5
OCT-980 tablets administered orally once daily.
Drug: Phase 1b/2: Cohort 5 - OCT-980 Tablet
OCT-980 tablets administered orally once daily at dose levels specified in the protocol

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Safety and tolerability of multiple doses (Phase 1b/2) of OCT-980 in participants with a genetic diagnosis of RHO-adRP.
Time Frame: Time Frame: From Baseline to Week 60 (Ph 1b/2)
Time Frame: From Baseline to Week 60 (Ph 1b/2)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Octant, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 10, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 17, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 14, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • OCT-980-101

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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