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Balancing "bad" and "good" immune cells: testing a novel method for monitoring an immunosuppression strategy in people with Type 1 diabetes

Treg-sparing co-stimulation blockade: testing a novel method for monitoring an immunosuppression strategy in people with Type 1 diabetes

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN85031369
Enrollment
24
Registered
2025-03-07
Start date
2025-01-21
Completion date
Unknown
Last updated
2026-04-20

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

Conditions

Type 1 diabetes Nutritional, Metabolic, Endocrine

Interventions

Group 1: Abatacept at weeks 0, 2, 4 and 8 in combination with Interleukin-2 only for 16 weeks starting at week 0 Group 2: Abatacept only at week 0, 2, 4 and 8 Abatacept Participants will receive 10 m

Sponsors

Cardiff University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 50 Years

Inclusion criteria

Inclusion criteria: 1. Aged 18-50 years 2. Diagnosis of Type 1 diabetes in the last 5 years, but not earlier than 3 months 3. Written and witnessed informed consent to participate 4. Detectable non-fasting C-peptide in the blood at screening

Exclusion criteria

Exclusion criteria: 1. Females who are pregnant, breastfeeding, anticipating being pregnant within 14 weeks of the last study drug administration or not using adequate forms of contraception. Males whose partners are WOCBP and not using an adequate form of contraception. The following birth control methods should be used (considered highly effective with a failure rate of less than 1% per year when used consistently and correctly): 1.1. Combined (oestrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation: oral, transdermal 1.2. Progestogen-only hormonal contraception associated with inhibition of ovulation: oral, injectable, implantable 1.3. Intrauterine device (IUD) 1.4. Intrauterine hormone-releasing system (IUS) 1.5. Bilateral tubal occlusion 1.6. Vasectomised partner (provided that the partner is the sole sexual partner of the trial participant, and that medical assessment of azoospermia has been confirmed) 1.7. Sexual abstinence (defined as refraining from heterosexual intercourse during the duration of the trial) 2. Use of immunosuppressive or immunomodulatory therapies, including systemic steroids within 1 month prior to randomisation and any monoclonal antibody therapy given for any indication 3. Immunisations with live vaccines within 1 month from screening 4. Immunodeficient or have clinically significant lymphopaenia 5. Patients with White Blood Count (WBC) 90 mmol/mol measured in the last 3 months

Design outcomes

Primary

MeasureTime frame
The feasibility of detecting that the decrease in Treg frequency associated with abatacept treatment in T1D is inhibited by appropriately dosed IL-2 therapy, measured using flow cytometry at Week 20 in comparison to baseline.

Secondary

MeasureTime frame
There are no secondary outcome measures

Countries

England, United Kingdom, Wales

Contacts

Public ContactDanijela Tatovic
SMART@cardiff.ac.uk+44 (0)2920742182

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Apr 23, 2026