Phase I study of zoledronic acid combined with escalated doses of interleukine-2 for early in vivo generation of Vγ9Vδ2 T-cells after haploidentical stem cell transplant with posttransplant cyclophosphamide

© 2024 Wiley Periodicals LLC..

The presence of donor Vγ9Vδ2 T-cells after haploidentical hematopoietic stem cell transplant (h-HSCT) has been associated with improved disease-free survival. These cells kill tumor cells in a non-MHC restricted manner, do not induce graft-versus-host disease (GVHD), and can be generated by stimulation with zoledronic acid (ZA) in combination with interleukin-2 (IL-2). This monocentric phase I, open-label, dose-escalating study (ClinicalTrials.gov: NCT03862833) aimed at evaluating the safety and possibility to generate Vγ9Vδ2 T-cells early after h-HSCT. It applied a standard 3 + 3 protocol to determine the maximum tolerated dose (MTD) of increasing low-doses of IL-2 (5 days [d] per week, 4 weeks) in combination with a single dose of ZA, starting both the first Monday after d + 15 posttransplant. Vγ9Vδ2 T-cell monitoring was performed by multiparameter flow cytometry on blood samples and compared with a control cohort of h-HSCT recipients. Twenty-six patients were included between April 2019 and September 2022, 16 of whom being ultimately treated and seven being controls who received h-HSCT only. At the three dose levels tested, 1, 0, and 1 dose-limiting toxicities were observed. MTD was not reached. A significantly higher number of Vγ9Vδ2 T-cells was observed during IL-2 treatment compared with controls. In conclusion, early in vivo generation of Vγ9Vδ2 T-cells is feasible after h-HSCT by using a combination of ZA and repeated IL-2 infusions. This study paves the way to a future phase 2 study, with the hope to document lesser posttransplant relapse with this particular adaptive immunotherapy.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:99

Enthalten in:

American journal of hematology - 99(2024), 3 vom: 12. Feb., Seite 350-359

Sprache:

Englisch

Beteiligte Personen:

Jullien, Maxime [VerfasserIn]
Guillaume, Thierry [VerfasserIn]
Le Bourgeois, Amandine [VerfasserIn]
Peterlin, Pierre [VerfasserIn]
Garnier, Alice [VerfasserIn]
Eveillard, Marion [VerfasserIn]
Le Bris, Yannick [VerfasserIn]
Bouzy, Simon [VerfasserIn]
Tessoulin, Benoît [VerfasserIn]
Gastinne, Thomas [VerfasserIn]
Dubruille, Viviane [VerfasserIn]
Touzeau, Cyrille [VerfasserIn]
Mahé, Béatrice [VerfasserIn]
Blin, Nicolas [VerfasserIn]
Lok, Anne [VerfasserIn]
Vantyghem, Sophie [VerfasserIn]
Sortais, Clara [VerfasserIn]
Antier, Chloé [VerfasserIn]
Moreau, Philippe [VerfasserIn]
Scotet, Emmanuel [VerfasserIn]
Béné, Marie C [VerfasserIn]
Chevallier, Patrice [VerfasserIn]

Links:

Volltext

Themen:

6XC1PAD3KF
8N3DW7272P
Clinical Trial, Phase I
Cyclophosphamide
Interleukin-2
Journal Article
Zoledronic Acid

Anmerkungen:

Date Completed 14.02.2024

Date Revised 14.02.2024

published: Print-Electronic

ClinicalTrials.gov: NCT03862833

Citation Status MEDLINE

doi:

10.1002/ajh.27191

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM366556541