A Phase II, Open-Label, Single-Center, Single-Arm Pilot Study to Evaluate the Safety, Tolerability and Efficacy of Blinatumomab for Treatment of Patients with Autoimmune B-Cell driven Diseases including Systemic Lupus Erythematosus (SLE), Systemic Sclerosis (SSc) and Granulomatous Polyangiitis (GPA), BlinA-B trial

2025-523061-22-00 Protocol BlinA-B Therapeutic exploratory (Phase II) Ongoing, recruiting

Start 14 Nov 2025 · Status Ongoing, recruiting · 1 EU/EEA countries · 1 sites · Protocol BlinA-B

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Ongoing, recruiting
Participants planned 5
Countries 1
Sites 1

Granulomatous Polyangiitis

Safety and tolerability of blinatumomab as treatment regime in patients with SLE, SSc or GPA

Key facts

Sponsor
Universitaet Leipzig
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Immune System Diseases [C20]
Trial duration
14 Nov 2025 → ongoing
Decision date (initial)
2025-09-26
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Safety

Safety and tolerability of blinatumomab as treatment regime in patients with SLE, SSc or GPA

Secondary objectives 3

  1. Long term safety of blinatumomab as treatment regime in patients with SLE, SSc or GPA
  2. Evaluation of disease-related biomarkers such as: Anti ds-DNA antibodies in SLE, Pr3 antibodies in GPA, SCL-70 or RNAP III in diffuse cutaneous SSc
  3. Clinical efficacy

Conditions and MedDRA coding

Granulomatous Polyangiitis

VersionLevelCodeTermSystem organ class
21.1 LLT 10072580 Granulomatous polyangiitis 10047065
21.1 LLT 10025139 Lupus erythematosus systemic 10028395
28.0 LLT 10079544 Systemic sclerosis sine scleroderma 10028395

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 10

  1. GENERAL INCLUSION CRITERIA: Age over 18 years
  2. SLE patients: Diagnosis of SLE according to EULAR/ ACR criteria for more than six months
  3. SLE patients: Serologically active disease: Positivity for ANA (1:160) and anti dsDNA, defined as more than ULN and Hypocomplementemia of C3 or C4
  4. SLE patients: Prior treatment failure of at least two immunosuppressive agents
  5. SLE patients: Clinical active disease: SLEDAI2k activity score > 6 and at least two BILAG B and/ or one BILAG A manifestation
  6. SSc patients: Diagnosis of dcSSc (2013 ACR/EULAR criteria for systemic sclerosis and LeRoy criteria for dcSSc)
  7. SSc patients: Disease onset from the first non-Raynaud symptoms within 6 years prior to screening visit.
  8. GPA patients: Diagnosis of GPA according to the Chapel Hill Consensus Conference definitions
  9. GPA patients: Positive serum Pr3-ANCA at screening or in medical history
  10. GPA patients: Active or refractory disease

Exclusion criteria 4

  1. Prior treatment with cellular immunotherapy (CAR T) or T cell engaging Antibodies
  2. History of allogeneic stem cell transplant
  3. Known infectious comorbidities (HIV positivity, Hepatitis B/C)
  4. Severely impaired cardiac function

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Incidence of treatment-emergent adverse events (adverse events up to week 12)

Secondary endpoints 3

  1. Incidence of treatment-emergent adverse events (adverse events from week 13 up to week 52)
  2. Reduction of Titers of significant autoantibodies such as anti-ds DNA antibodies, SCL-70 antibodies or Pr3 antibodies
  3. Clinical efficacy (Selena SLEDAI in SLE patients, ACR-CRISS score in cutaneous SSc patients, BVAS Score in GPA patients)

Investigational products

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

Test 1

BLINCYTO 38.5 micrograms powder for concentrate and solution for solution for infusion.

PRD3418637 · Product

Active substance
Blinatumomab
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS
Max daily dose
28 µg microgram(s)
Max total dose
280 µg microgram(s)
Max treatment duration
10 Day(s)
Authorisation status
Authorised
ATC code
L01FX07 — -
Marketing authorisation
EU/1/15/1047/001
MA holder
AMGEN EUROPE B.V.
MA country
EU
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Universitaet Leipzig

Sponsor organisation
Universitaet Leipzig
Address
Ritterstrasse 26, Zentrum Zentrum
City
Leipzig
Postcode
04109
Country
Germany

Scientific contact point

Organisation
Universitaet Leipzig
Contact name
Susanne Melzer

Public contact point

Organisation
Universitaet Leipzig
Contact name
Susanne Melzer

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
Germany Ongoing, recruiting 5 1
Rest of world 0

Investigational sites

Germany

1 site · Ongoing, recruiting
Universitaet Leipzig
Early Clinical Trials Unit Leipzig, Liebigstrasse 22, Zentrum-Suedost, Leipzig

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Germany 2025-11-14 2025-11-20

Results and documents

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

Documents 6 files

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

TypeTitleVersion
Protocol (for publication) BlinA-B_trial protocol_p 4
Recruitment arrangements (for publication) BlinA-B_Recruitment arrangements 1
Subject information and informed consent form (for publication) BlinA-B_PIC data use_new 2
Subject information and informed consent form (for publication) BlinA-B_PIC trial_new 3
Summary of Product Characteristics (SmPC) (for publication) BlinA-B_SmPC 1
Summary of Product Characteristics (SmPC) (for publication) BLINCYTO_SmPC_Jun 2025 1

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-07-09 Germany Acceptable
2025-09-24
2025-09-26
2 NON SUBSTANTIAL MODIFICATION NSM-1 2025-11-18 Germany Acceptable
2025-09-24
2025-11-18
3 SUBSTANTIAL MODIFICATION SM-1 2026-02-20 Germany Acceptable
2026-03-17
2026-03-25