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A multicenter, randomized, blinded, placebo controlled, phase II study to evaluate the safety and efficacy of cell therapy based with artificially expanded CD4+CD25+CD127- regulatory lymphocytes and anti-CD20 antibody in pediatric patients with presymptomatic diabetes type 1 (stage 1)

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-505226-33-00
Acronym
PTG007DM1preTREG001
Enrollment
150
Registered
2024-07-22
Start date
2025-01-28
Completion date
Unknown
Last updated
2025-08-01

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

Conditions

Presymptomatic diabetes type 1 (stage 1)

Brief summary

Cumulative diabetes incidence [only the progression to stage 3 considered as diabetes incidence]. (The analysis will cover the percentage of participants in each group who are in stage 2 type 1 diabetes mellitus, i.e., presence of autoantibodies, dysglycemia or stage 3 at year 1 and every year thereafter after the first dose of Tregs/placebo), Number of adverse events reported 1 year, 2 years after the first dose of Tregs and at the end of the trial comparing to control arms

Detailed description

Pace of diabetes development. Total number of days from the date of diagnosis of stage 2 to the date of onset of full-blown type 1 diabetes mellitus (stage 3 of type 1 diabetes mellitus) in each group (normalized to the number of person/days in each group), C-peptide levels [fasting/post MMTT stimulation (AUC)] 1 year, 2 years after the first dose of Tregs and then annually until the end of the trial comparing to control arms, Daily average dose of insulin per kg body weight (DDI) 1 year, 2 years after the first dose of Tregs, and annually thereafter until the end of the trial in each arm of the study, Number of participants per arm in remission 1 year, 2 years after the first dose of Tregs, and annually thereafter until the end of the trial, [remission defined as daily insulin dose is less than 0.5U/kg/day with an HbA1c level less than 6.5%], Assessment of the incidence and severity of adverse events associated with the administration of Treg preparation or anti-CD20 antibody, primarily the effects of immunosuppression: incidence of infections of any etiology and de novo tumors detected, Percentage of participants in each group who are still in stage 1 type 1 diabetes mellitus, i.e., presence of autoantibodies and normoglycemia

Interventions

DRUGPARACETAMOL
DRUGDIPHENHYDRAMINE
DRUGRITUXIMAB
DRUGSALINE
DRUGTregs

Sponsors

Poltreg S.A.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
0 Years to 17 Years

Design outcomes

Primary

MeasureTime frame
Cumulative diabetes incidence [only the progression to stage 3 considered as diabetes incidence]. (The analysis will cover the percentage of participants in each group who are in stage 2 type 1 diabetes mellitus, i.e., presence of autoantibodies, dysglycemia or stage 3 at year 1 and every year thereafter after the first dose of Tregs/placebo), Number of adverse events reported 1 year, 2 years after the first dose of Tregs and at the end of the trial comparing to control arms

Secondary

MeasureTime frame
Pace of diabetes development. Total number of days from the date of diagnosis of stage 2 to the date of onset of full-blown type 1 diabetes mellitus (stage 3 of type 1 diabetes mellitus) in each group (normalized to the number of person/days in each group), C-peptide levels [fasting/post MMTT stimulation (AUC)] 1 year, 2 years after the first dose of Tregs and then annually until the end of the trial comparing to control arms, Daily average dose of insulin per kg body weight (DDI) 1 year, 2 years after the first dose of Tregs, and annually thereafter until the end of the trial in each arm of the study, Number of participants per arm in remission 1 year, 2 years after the first dose of Tregs, and annually thereafter until the end of the trial, [remission defined as daily insulin dose is less than 0.5U/kg/day with an HbA1c level less than 6.5%], Assessment of the incidence and severity of adverse events associated with the administration of Treg preparation or anti-CD20 antibody, primar

Countries

Poland

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026