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Safety and Efficacy of Intravenous GC801 Injection for the Elimination of Serum Anti-AAV9 Antibodies: A Single-Arm, Open-Label, Single-Center, Single-Dose Trial

Safety and Efficacy of Intravenous GC801 Injection for the Elimination of Serum Anti-AAV9 Antibodies: A Single-Arm, Open-Label, Single-Center, Single-Dose Trial

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600120964
Enrollment
Unknown
Registered
2026-03-23
Start date
2026-03-24
Completion date
Unknown
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pompe disease

Interventions

Experimental group:GC801 intravenous injection

Sponsors

The Seventh Medical Center of Chinese PLA General Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
No minimum to 8 Years

Inclusion criteria

Inclusion criteria: 1. Patients with Pompe disease aged <=8 years, regardless of gender; 2. Serum anti-AAV9 binding antibody titer: 1:1000 to 1:10000 (including the cutoff values); 3. Immunoglobulin G (IgG) level within the normal range at the time of treatment; 4. The subject’s guardian is able to understand and comply with the requirements and procedures of the study protocol, and voluntarily participates and provides written informed consent.

Exclusion criteria

Exclusion criteria: 1. History or family history of primary or secondary immunodeficiency. 2. Hypersensitivity to streptococcal or protease drugs, hypersensitivity to the active ingredient/excipients of the investigational product, or history of severe allergic reaction/anaphylactic shock. 3. Clinically significant abnormalities in hematology or serum biochemistry parameters at screening. 4. Severe infection (requiring systemic anti-infective treatment) or other clinically significant disease that has not fully resolved and may interfere with the assessment of the investigational product within 4 weeks prior to enrollment. 5. Vaccination within 2 weeks prior to enrollment. 6. Any other conditions deemed inappropriate by the investigator for participation in the study.

Design outcomes

Primary

MeasureTime frame
Adverse Events (AEs);Laboratory examination;Vital sign parameters (blood pressure, heart rate, respiratory rate, body temperature);Anti-AAV9 binding antibodies;

Secondary

MeasureTime frame
Serum total IgG;

Countries

China

Contacts

Public ContactZhichun Feng

The Seventh Medical Center of Chinese PLA General Hospital

zhjfengzc@126.com+86 10 8400 9079

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Apr 4, 2026