A Study of Adeno-Associated Virus Serotype 8-Mediated Gene Transfer of Glucose-6-Phosphatase in P… (NCT05139316) | Clinical Trial Compass
CompletedPhase 3
A Study of Adeno-Associated Virus Serotype 8-Mediated Gene Transfer of Glucose-6-Phosphatase in Patients With Glycogen Storage Disease Type Ia (GSDIa)
United States, Brazil, Canada49 participantsStarted 2021-11-08
Plain-language summary
The primary objectives of this study are to evaluate the efficacy of DTX401 to reduce or eliminate dependence on exogenous glucose replacement therapy to maintain euglycemia and to maintain or improve the quality of glucose control.
Who can participate
Age range
8 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Key Inclusion Criteria:
* Documented GSDIa with confirmation by molecular testing or enzymatic activity on liver biopsy
* Currently receiving a therapeutic regimen of cornstarch (or equivalent), following international guidance/recommendations with stable nutrition, glycemic, and clinical status.
* Willing and able to complete the informed consent process and to comply with study procedures and visit schedule
* Females of childbearing potential and fertile males must consent to use highly effective contraception from the period following informed consent through the duration of the 144-week study and in cases of early withdrawal at least 48 weeks after the last dose of investigational product (IP). Female subjects must agree not to become pregnant. Male subjects must agree not to father a child or donate sperm
Key Exclusion Criteria:
* Detectable pre-existing antibodies to the AAV8 capsid
* History of liver transplant, including hepatocyte cell therapy/ transplant
* History of liver disease
* Presence of liver adenoma \>5 cm in size
* Presence of liver adenoma \>3 cm and ≤5 cm in size that has a documented annual growth rate of ≥0.5 cm per year
* Significant hepatic inflammation or cirrhosis as evidenced by imaging or any of the following laboratory abnormalities: alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \> upper limit of normal (ULN), total bilirubin \>1.5 × ULN, alkaline phosphatase \>2.5 × ULN
* Non-fasting triglycerides ≥1000 mg/dL
* Pregnant,…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Percent Change from Baseline to Week 48 in Daily Cornstarch Intake