Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous group of large lymphoid B cell malignancy with distinct clinical and genetic features. Recently, mutations were identified in DLBCL cases by Next-generation sequencing (NGS), but the clinical features and prognostic impact were not systematically studied. Here, genes in 161 DLBCL samples were sequenced by NGS. The prognostic value of mutations was assessed in the context of clinical and laboratory factors, such as international prognostic index (IPI), cell-of-origin classification, double expression of BCL2 and c-MYC. The combined data from three Western cohorts were used to validate these results. As a result, mutations were found in 17(10.6%) patients, and three patients had a hotspot mutation of c.7541_7542delCT. The presence of mutations was significantly associated with poor complete response and progression free survival(PFS), which was independent of established clinical and laboratory parameters. In addition, 30 (1.92%) of 1562 patients treated with R-CHOP regimen in those combined Western cohorts had mutations. Meta-analysis of the Western cohorts confirmed that mutations were also associated with poor PFS and OS. In conclusion, DLBCL patients with the mutations have worse PFS and OS, and the mutations can be used as an independent predictor for patients with DLBCL.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8695434 | PMC |
| http://dx.doi.org/10.3389/fonc.2021.746577 | DOI Listing |
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