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Title: Molecular profiling of immunoglobulin heavy-chain gene rearrangements unveils new potential prognostic markers for multiple myeloma patients
Author: 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, J. (Joan)
Lahuerta, Juan José
San Miguel, Jesús F.
Mateos, María Victoria
Martínez López, Joaquín
Calasanz, María José
García Sanz, Ramón
Keywords: Mieloma múltiple
Cèl·lules B
Multiple myeloma
B cells
Issue Date: 6-Feb-2020
Publisher: Springer Nature
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Blood Cancer Journal, 2020, vol. 10, num. 14
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ISSN: 2044-5385
Appears in Collections:Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)
Articles publicats en revistes (Ciències Clíniques)

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