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Ocadlikova D, Lussana F, Fracchiolla N, Bonifacio M, Santoro L, Delia M, Chiaretti S, Pasciolla C, Cignetti A, Forghieri F, Grimaldi F, Corradi G, Zannoni L, De Propris S, Borleri GM, Tanasi I, Vadakekolathu J, Rutella S, Guarini AR, Foà R, Curti A. Blinatumomab differentially modulates peripheral blood and bone marrow immune cell repertoire: A Campus ALL study. Br J Haematol 2023; 203:637-650. [PMID: 37700538 DOI: 10.1111/bjh.19104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 08/04/2023] [Accepted: 08/30/2023] [Indexed: 09/14/2023]
Abstract
Blinatumomab is the first bi-specific T-cell engager approved for relapsed or refractory B-cell precursor acute lymphoblastic leukaemia (B-ALL). Despite remarkable clinical results, the effects of blinatumomab on the host immune cell repertoire are not fully elucidated. In the present study, we characterized the peripheral blood (PB) and, for the first time, the bone marrow (BM) immune cell repertoire upon blinatumomab treatment. Twenty-nine patients with B-ALL received blinatumomab according to clinical practice. Deep multiparametric flow cytometry was used to characterize lymphoid subsets during the first treatment cycle. Blinatumomab induced a transient redistribution of PB effector T-cell subsets and Treg cells with a persistent increase in cytotoxic NK cells, which was associated with a transient upregulation of immune checkpoint receptors on PB CD4 and CD8 T-cell subpopulations and of CD39 expression on suppressive Treg cells. Of note, BM immune T-cell subsets showed a broader post-treatment subversion, including the modulation of markers associated with a T-cell-exhausted phenotype. In conclusion, our study indicates that blinatumomab differentially modulates the PB and BM immune cell repertoire, which may have relevant clinical implications in the therapeutic setting.
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Affiliation(s)
- Darina Ocadlikova
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - Federico Lussana
- Department of Oncology and Hematology, Università degli Studi di Milano, Milan, Italy
- Hematology and Bone Marrow Transplant Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Nicola Fracchiolla
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, UO Ematologia, Milan, Italy
| | - Massimiliano Bonifacio
- Dipartimento di Medicina, UOC Ematologia, Università di Verona and AOUI Verona, Verona, Italy
| | | | - Mario Delia
- UO Ematologia con Trapianto - Azienda Ospedaliero-Universitaria-Consorziale Policlinico di Bari, Bari, Italy
| | - Sabina Chiaretti
- Dipartimento di Medicina Traslazionale e di Precisione, Università "Sapienza", Roma, Italy
| | | | | | - Fabio Forghieri
- Dipartimento di Scienze Mediche e Chirurgiche Materno-Infantili e dell'Adulto, Università di Modena e Reggio Emilia, AOU di Modena, Modena, Italy
| | | | - Giulia Corradi
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - Letizia Zannoni
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - Stefania De Propris
- Dipartimento di Medicina Traslazionale e di Precisione, Università "Sapienza", Roma, Italy
| | - Gian Maria Borleri
- Department of Oncology and Hematology, Università degli Studi di Milano, Milan, Italy
- Hematology and Bone Marrow Transplant Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Ilaria Tanasi
- Dipartimento di Medicina, UOC Ematologia, Università di Verona and AOUI Verona, Verona, Italy
| | - Jayakumar Vadakekolathu
- John van Geest Cancer Research Centre, College of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Sergio Rutella
- John van Geest Cancer Research Centre, College of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Anna Rita Guarini
- Dipartimento di Medicina Molecolare, Università "Sapienza", Roma, Italy
| | - Robin Foà
- Dipartimento di Medicina Traslazionale e di Precisione, Università "Sapienza", Roma, Italy
| | - Antonio Curti
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia "Seràgnoli", Bologna, Italy
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