NCT03669861

Safety and Efficacy of Abatacept in IgG4-Related Disease

A Prospective, Open-label, Single Center Abatacept in IgG4-Related Disease 10-patient Proof-of-concept Study

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 10 (actual)
• Sponsor: Massachusetts General Hospital · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This is a Phase 2, single center, proof of concept clinical trial in subjects with active IgG4-Related Disease (IgG4-RD). Approximately 10 subjects with active IgG4-RD will be enrolled into this study. Subjects will receive weekly subcutaneous doses of abatacept (125mg) for 24 doses (24 weeks).

Detailed description

After obtaining informed consent, all screening procedures and tests establishing eligibility will be performed on the initial screening visit. Subjects determined to be eligible at screening will receive an initial subcutaneous dose of abatacept (125mg), which will be continued weekly for a total of up to 24 doses (24 weeks). Steroid therapy must be tapered off and discontinued over a 4 week period (taper must be completed no later than week 4). Should patients be deemed to have worsening disease or failing therapy at 4 weeks then a trial of steroids can be considered. Subjects will return on weeks 1, 2, 4, 8, 12, 16, 20, and 24 while on treatment for their injections, and for the scheduled safety and disease response assessments. Subjects will be allowed to self-administer their injections at home. The full treatment period is 24 doses given weekly for 24 weeks. Subjects who are not able to be tapered off corticosteroids or who require reinstitution of corticosteroid therapy at any time during the study will be counted as treatment failures, but may continue on study. Should the IgG4-RD responder index fail to improve by 8 weeks or should there be development of new organ failure at 4 weeks, patient's will be deemed treatment failure and can begin corticosteroid or alternative immunosuppressive therapy at the Investigator's discretion. Those who require rituximab or who require addition of other oral immunosuppressives will be counted as treatment failures and will terminate the study. All subjects completing the treatment period will have follow up visits off protocolized treatment at 28 and 36 weeks. All adverse events (including serious adverse events (AEs) and deaths) and use of concomitant medication information will be collected throughout the study from screening through study termination. Subjects developing treatment-emergent adverse events or clinically significant safety lab abnormalities will be followed until resolution or until stabilization of the adverse events/abnormalities.

Conditions

• IgG4-related Disease

Interventions

Type	Name	Description
DRUG	Abatacept	Subjects will receive weekly subcutaneous doses of abatacept (125mg) for 24 doses (24 weeks)

Timeline

• Start date: 2018-11-13
• Primary completion: 2020-04-10
• Completion: 2020-11-10
• First posted: 2018-09-13
• Last updated: 2021-08-24
• Results posted: 2021-08-24

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study