Molecular profiling of immunoglobulin heavy-chain gene rearrangements unveils new potential prognostic markers for multiple myeloma patients

Multiple myeloma is a heterogeneous disease whose pathogenesis has not been completely elucidated. Although B-cell receptors play a crucial role in myeloma pathogenesis, the impact of clonal immunoglobulin heavy-chain features in the outcome has not been extensively explored. Here we present the cha...

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Veröffentlicht in:Blood cancer journal (New York) 2020-02, Vol.10 (2), p.14-14, Article 14
Hauptverfasser: Medina, Alejandro, Jiménez, Cristina, Sarasquete, M. Eugenia, González, Marcos, Chillón, M. Carmen, Balanzategui, Ana, Prieto-Conde, Isabel, García-Álvarez, María, Puig, Noemí, González-Calle, Verónica, Alcoceba, Miguel, Cuenca, Isabel, Barrio, Santiago, Escalante, Fernando, Gutiérrez, Norma C., Gironella, Mercedes, Hernández, Miguel T., Sureda, Anna, Oriol, Albert, Bladé, Joan, Lahuerta, Juan-José, San Miguel, Jesús F., Mateos, María-Victoria, Martínez-López, Joaquín, Calasanz, María-José, García-Sanz, Ramón
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container_issue 2
container_start_page 14
container_title Blood cancer journal (New York)
container_volume 10
creator Medina, Alejandro
Jiménez, Cristina
Sarasquete, M. Eugenia
González, Marcos
Chillón, M. Carmen
Balanzategui, Ana
Prieto-Conde, Isabel
García-Álvarez, María
Puig, Noemí
González-Calle, Verónica
Alcoceba, Miguel
Cuenca, Isabel
Barrio, Santiago
Escalante, Fernando
Gutiérrez, Norma C.
Gironella, Mercedes
Hernández, Miguel T.
Sureda, Anna
Oriol, Albert
Bladé, Joan
Lahuerta, Juan-José
San Miguel, Jesús F.
Mateos, María-Victoria
Martínez-López, Joaquín
Calasanz, María-José
García-Sanz, Ramón
description Multiple myeloma is a heterogeneous disease whose pathogenesis has not been completely elucidated. Although B-cell receptors play a crucial role in myeloma pathogenesis, the impact of clonal immunoglobulin heavy-chain features in the outcome has not been extensively explored. Here we present the characterization of complete heavy-chain gene rearrangements in 413 myeloma patients treated in Spanish trials, including 113 patients characterized by next-generation sequencing. Compared to the normal B-cell repertoire, gene selection was biased in myeloma, with significant overrepresentation of IGHV3 , IGHD2 and IGHD3 , as well as IGHJ4 gene groups. Hypermutation was high in our patients (median: 8.8%). Interestingly, regarding patients who are not candidates for transplantation, a high hypermutation rate (≥7%) and the use of IGHD2 and IGHD3 groups were associated with improved prognostic features and longer survival rates in the univariate analyses. Multivariate analysis revealed prolonged progression-free survival rates for patients using IGHD2/IGHD3 groups (HR: 0.552, 95% CI: 0.361−0.845, p  = 0.006), as well as prolonged overall survival rates for patients with hypermutation ≥7% (HR: 0.291, 95% CI: 0.137−0.618, p  = 0.001). Our results provide new insights into the molecular characterization of multiple myeloma, highlighting the need to evaluate some of these clonal rearrangement characteristics as new potential prognostic markers.
doi_str_mv 10.1038/s41408-020-0283-8
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Although B-cell receptors play a crucial role in myeloma pathogenesis, the impact of clonal immunoglobulin heavy-chain features in the outcome has not been extensively explored. Here we present the characterization of complete heavy-chain gene rearrangements in 413 myeloma patients treated in Spanish trials, including 113 patients characterized by next-generation sequencing. Compared to the normal B-cell repertoire, gene selection was biased in myeloma, with significant overrepresentation of IGHV3 , IGHD2 and IGHD3 , as well as IGHJ4 gene groups. Hypermutation was high in our patients (median: 8.8%). Interestingly, regarding patients who are not candidates for transplantation, a high hypermutation rate (≥7%) and the use of IGHD2 and IGHD3 groups were associated with improved prognostic features and longer survival rates in the univariate analyses. Multivariate analysis revealed prolonged progression-free survival rates for patients using IGHD2/IGHD3 groups (HR: 0.552, 95% CI: 0.361−0.845, p  = 0.006), as well as prolonged overall survival rates for patients with hypermutation ≥7% (HR: 0.291, 95% CI: 0.137−0.618, p  = 0.001). Our results provide new insights into the molecular characterization of multiple myeloma, highlighting the need to evaluate some of these clonal rearrangement characteristics as new potential prognostic markers.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>32029700</pmid><doi>10.1038/s41408-020-0283-8</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-0374-3008</orcidid><orcidid>https://orcid.org/0000-0003-4120-2787</orcidid><orcidid>https://orcid.org/0000-0002-2510-8355</orcidid><orcidid>https://orcid.org/0000-0002-3819-4846</orcidid><orcidid>https://orcid.org/0000-0003-2390-1218</orcidid><orcidid>https://orcid.org/0000-0001-5609-2969</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 2044-5385
ispartof Blood cancer journal (New York), 2020-02, Vol.10 (2), p.14-14, Article 14
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2044-5385
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subjects 45/23
45/77
631/67/1990/804
692/308/2056
Adult
Aged
Aged, 80 and over
Biomarkers, Tumor - genetics
Biomedical and Life Sciences
Biomedicine
Cancer Research
Female
Follow-Up Studies
Gene Expression Profiling
Gene Expression Regulation, Neoplastic
Gene Rearrangement
Hematology
Humans
Immunoglobulin Heavy Chains - genetics
Immunoglobulin Variable Region - genetics
Immunoglobulins
Male
Middle Aged
Multigene Family
Multiple myeloma
Multiple Myeloma - genetics
Multiple Myeloma - immunology
Multiple Myeloma - pathology
Oncology
Pathogenesis
Prognosis
title Molecular profiling of immunoglobulin heavy-chain gene rearrangements unveils new potential prognostic markers for multiple myeloma patients
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