A Study of Gene Therapy for Classic Congenital Adrenal Hyperplasia (CAH)

NCT ID: NCT04783181

Last Updated: 2025-12-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

8 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-07-01

Study Completion Date

2029-02-28

Brief Summary

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This study is designed to evaluate the safety, tolerability, and efficacy of AAV5 based BBP-631 in adult participants diagnosed with classic congenital adrenal hyperplasia.

Detailed Description

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Participants will receive a single dose of AAV5 based intravenous (IV) BBP-631 and will be followed for safety and efficacy for at least 5 years after the date of treatment with BBP-631.

Conditions

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Congenital Adrenal Hyperplasia

Keywords

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CAH Gene therapy AAV AAV5

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Participants will be assigned sequentially to one of 4 dose levels depending on the date of determination of eligibility.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Dose Level 1

BBP-631 lowest dose, administered once, intravenously (IV)

Group Type EXPERIMENTAL

AAV BBP-631

Intervention Type BIOLOGICAL

intravenous

Dose Level 2

BBP-631 middle dose, administered once, IV

Group Type EXPERIMENTAL

AAV BBP-631

Intervention Type BIOLOGICAL

intravenous

Dose Level 3

BBP-631, high dose, administered once, IV

Group Type EXPERIMENTAL

AAV BBP-631

Intervention Type BIOLOGICAL

intravenous

Dose Level 4

BBP-631, highest dose, administered once, IV

Group Type EXPERIMENTAL

AAV BBP-631

Intervention Type BIOLOGICAL

intravenous

Interventions

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AAV BBP-631

intravenous

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Adult male and non-pregnant females with classic CAH (simple virilizing or salt-wasting) due to 21-OHD
2. Screening/baseline 17-OHP levels \> 5-10 × ULN and \< 40 × ULN (upper limit of normal)
3. Stable oral hydrocortisone (HC) regimen as the only glucocorticoid (GC) maintenance therapy
4. Naïve to prior gene therapy or AAV-mediated therapy

Exclusion Criteria

1. Positive for anti-AAV5 (Adeno-Associated Virus Type 5) antibodies
2. History of adrenalectomy and/or significant liver disease
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Adrenas Therapeutics Inc

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Ann and Robert H. Lurie Children's Hospital of Chicago

Chicago, Illinois, United States

Site Status

National Institutes of Health Clinical Center

Bethesda, Maryland, United States

Site Status

University of Minnesota

Minneapolis, Minnesota, United States

Site Status

Lucas Research, Inc.

Morehead City, North Carolina, United States

Site Status

Children's Hospital of Philadelphia

Philadelphia, Pennsylvania, United States

Site Status

Countries

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Australia United States

Related Links

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https://cahgenetherapy.com

CAH Gene Therapy Website

https://adrenastx.com

Adrenas Therapeutics Website

Other Identifiers

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CAH-301

Identifier Type: -

Identifier Source: org_study_id