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Open-label Clinical Trial to Investigate the Safety and Tolerability of Allogeneic B-cell Concentrates for Immune Reconstitution After Allogeneic Stem Cell Transplantation Measured as Response to a Antedated Single Vaccination

Prospective, Open-label, Multicentre Clinical Trial, Phase I/IIa, to Investigate the Safety and Tolerability of Allogeneic B-cell Concentrates CD3+-Depleted, CD19+-Enriched, Cryopreserved (Single Administration After Day 120 Following Allogeneic Stem Cell Transplantation (SCT), Donor-identical) in 4 Groups With Escalating Doses for Immune Response Enhancement, Measured as Response to a Antedated Single Vaccination

Status
UNKNOWN
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02007811
Acronym
B-cell therapy
Enrollment
15
Registered
2013-12-11
Start date
2013-11-30
Completion date
2015-12-31
Last updated
2014-03-26

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

Conditions

Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, Aplastic Anemia, Chronic Myeloid Leukemia, Hodgkin's Disease, Multiple Myeloma, Myelodysplastic Syndrome, Non Hodgkin's Lymphoma

Brief summary

The reconstitution of a functioning immune system after allogeneic stem cell transplantation takes months to years. Particularly memory B-lymphocytes reconstitute poorly with the current conditioning regimes. During the period of intense immune suppression the patients are extremely susceptible to bacterial, fungal and, most importantly, viral infections.The adoptive transfer of B-lymphocytes from the stem-cell donor might significantly enhance humoral immunity for the patient. Aim of the study is to evaluate a new cellular therapy with B-lymphocytes regarding safety. A booster vaccination after B-lymphocyte transfer will evaluate the functionality of the transferred B-lymphocytes in the patient.

Interventions

BIOLOGICALallogeneic donor derived B-lymphocytes

CD3+-depleted, CD19+-enriched, cryopreserved (single administration after day 120 following allogeneic stem cell transplantation, donor-identical) in 4 groups with escalating doses

Sponsors

University Hospital Regensburg
CollaboratorOTHER
Wuerzburg University Hospital
CollaboratorOTHER
University Hospital, Essen
CollaboratorOTHER
German Research Foundation
CollaboratorOTHER
University of Erlangen-Nürnberg Medical School
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. patients after allogeneic stem cell transplantation 2. Serostatus for EBV: R-/D- oder R+/D- oder R+/D+

Exclusion criteria

1. Serostatus for EBV: R-/D+ 2. Severe acute Graft versus Host Disease (GvHD) (Glucksberg grade III und IV) 3. Chronic GvHD in middle- or high-risk group according to NIH staging 4. Rituximab administration after SCT 5. \>10.000 EBV DNA copies/ml plasma 6. Recurrence of the haematological disorder needing therapeutic intervention 7. Secondary transplantation 8. SCT with transplant from a haploidentical donor 9. SCT with transplant from umbilical cord blood 10. CD34+-enriched transplant 11. in vitro T-cell depleted transplant 12. Pregnant or breast-feeding female

Design outcomes

Primary

MeasureTime frame
Number of participants with EBV DNA copies/ml plasma higher than 50,000for 120 days after administration of study medication
Number of participants with signs of a post-transplant lymphoproliferative disorder (PTLD)for 120 days after administration of study medication
Number of participants with adverse events (AEs), adverse reactions (ARs), serious adverse events (SAEs), serious adverse reactions (SARs) and suspected unexpected serious adverse reaction (SUSARs)for 120 days after administration of study medication

Secondary

MeasureTime frame
Change of antigen-specific antibody concentration in serum/plasma between dose groups1 day before and up to 120 days after administration of study medication
Number of patients with >5,000 CMV DNA copies/ml plasma or with signs of organ infestation by CMV between dose groups.up to 120 days after administration of study medication
Change of Cytomegalovirus (CMV) DNA copies/ml plasma between dose groups1 day before and up to 120 days after administration of study medication
Change in the frequency of antibody-producing cells between dose groupsbefore and 7 days after preponed single vaccination
Change of mean absolute number of B-lymphocytes, naïve B-lymphocytes and memory B-lymphocytes between dose groups.1 day before and up to 120 days after administration of study medication

Countries

Germany

Contacts

Primary ContactJulia Winkler, MD
julia.winkler@uk-erlangen.de+49 9131 85 43112
Backup ContactWolf Rösler, MD
wolf.roesler@uk-erlangen.de+49 9131 85 43115

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026