Multi-center, single-arm, phase II clinical trial evaluating efficacy and in-vivo homing of adoptively transferred autologous ex-vivo expanded regulatory T cells in adults with ulcerative colitis

2025-520628-11-00 Therapeutic exploratory (Phase II) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 2 sites

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Authorised, recruitment pending
Participants planned 30
Countries 1
Sites 2

Ulcerative colitis

The primary objective of this study is to evaluate the rate of clinical remission according to the modified Mayo (mMayo) score at week 12 compared to the day of screening (Mayo subscores of 0 for rectal bleeding, 0 or 1 for stool frequency, and 0 or 1 for endoscopy [modified excluding friability]).

Key facts

Sponsor
Universitaetsklinikum Erlangen AöR
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Digestive System Diseases [C06]
Decision date (initial)
2025-08-21
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Safety

The primary objective of this study is to evaluate the rate of clinical remission according to the modified Mayo (mMayo) score at week 12 compared to the day of screening (Mayo subscores of 0 for rectal bleeding, 0 or 1 for stool frequency, and 0 or 1 for endoscopy [modified excluding friability]).

Conditions and MedDRA coding

Ulcerative colitis

VersionLevelCodeTermSystem organ class
20.0 PT 10009900 Colitis ulcerative 100000004856

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 2

  1. Established diagnosis of active UC, with minimum time from diagnosis of ≥ 3 months and confirmed by endoscopy extending 15 cm or more above the anal verge, with a mMayo score of 5-9, including an endoscopic subscore of ≥ 2 (modified to exclude friability from grade 1), WHO performance status of 0, 1 or 2
  2. age ≥ 18 years

Exclusion criteria 4

  1. Seriously impaired hematological, hepatic or renal function, major serious illness, evidence for human immunodeficiency virus 1 (HIV-1), human immunodeficiency virus 2 (HIV-2, Treponema pallidum (TPHA), hepatitis B virus (HBV) or hepatitis C virus (HCV) infection, subjects who have spent a cumulative period of 1 year or more in the UK between the beginning of 1980 and the end of 1996, subjects who have a family history which places them at risk of developing Creutzfeldt-Jacob disease
  2. Subjects who have received a corneal or dura mater graft, or who have been treated in the past with medicines made from human pituitary glands, cancer, splenectomy or radiation therapy of the spleen, organ allografts
  3. suspicion of differential diagnosis including but not limited to Crohn’s enterocolitis, ischaemic colitis, radiation colitis, indeterminate colitis, infectious colitis, diverticular disease associated colitis, microscopic colitis
  4. UC limited to the rectum

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. The primary endpoint of this study is the proportion of subjects in clinical remission according to the modified Mayo score at week 12 compared to the day of screening (remission defined as the proportion of subjects with Mayo subscores of 0 for rectal bleeding, 0 or 1 for stool frequency, and 0 or 1 for endoscopy [modified excluding friability]).

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

Autologous Regulatory T-Cells with an Immunophenotype of CD4CD25HIFOXP3

PRD6421126 · Product

Active substance
Autologous Regulatory T-Cells with an Immunophenotype of CD4CD25HIFOXP3
Substance synonyms
ImmuReg
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS USE
Max daily dose
5000000 IU/kg international unit(s)/kilogram
Max total dose
10000000 IU/kg international unit(s)/kilogram
Max treatment duration
2 Week(s)
Authorisation status
Not Authorised
MA holder
UNIVERSITÄTSKLINIKUM ERLANGEN
Paediatric formulation
No
Orphan designation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Universitaetsklinikum Erlangen AöR

Sponsor organisation
Universitaetsklinikum Erlangen AöR
Address
Maximiliansplatz 2, Innenstadt Innenstadt
City
Erlangen
Postcode
91054
Country
Germany

Scientific contact point

Organisation
Universitaetsklinikum Erlangen AöR
Contact name
Prof. Dr. Caroline Voskens

Public contact point

Organisation
Universitaetsklinikum Erlangen AöR
Contact name
Prof. Dr. Caroline Voskens

Locations

1 EU/EEA country · 2 investigational sites

By country

CountryMS statusPlanned subjectsSites
Germany Authorised, recruitment pending 30 2
Rest of world 0

Investigational sites

Germany

2 sites · Authorised, recruitment pending
Universitaetsklinikum Erlangen AöR
Department of Gastroenterology, Pneumology and Endocrinology, Ulmenweg 18, Innenstadt, Erlangen
Charite Universitaetsmedizin Berlin KöR
Department of Gastroenterology, Infectious Diseases and Rheumatology, Hindenburgdamm 30, Lichterfelde, Berlin

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 4 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol_ER-TREG-02_redacted 1.2
Recruitment arrangements (for publication) K1_Recruitment_IC_Procedure 1.0
Subject information and informed consent form (for publication) L1_SIS_ICF_ER-TREG-02 1.1
Subject information and informed consent form (for publication) L2_Subject_Card_ER-TREG-02 1.0

Application history

2 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-05-22 Germany Acceptable
2025-08-20
2025-08-21
2 SUBSTANTIAL MODIFICATION SM-1 2025-09-24 Germany Acceptable 2025-11-05