Future oncology (London, England) · 2021
Prediction and characterization of diffuse large B-cell lymphoma cell-of-origin subtypes using targeted sequencing.
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Trabucco Sally E, Sokol Ethan S, Maund Sophia L, Moore Jay A, Frampton Garrett M, Albacker Lee A, Oestergaard Mikkel Z, Venstrom Jeffrey, Sehn Laurie H, Bolen Christopher R
Аннотация
The aim of the present study was to determine cell of origin (COO) from a platform using a DNA-based method, COO DNA classifier (COODC). A targeted exome-sequencing platform that applies the mutational profile of a sample was used to classify COO subtype. Two major mutational signatures associated with COO were identified: Catalogue of Somatic Mutations in Cancer (COSMIC) signature 23 enriched in activated B cell (ABC) and COSMIC signature 3, which suggested increased frequency in germinal center B cell (GCB). Differential mutation signatures linked oncogenesis to mutational processes during B-cell activation, confirming the putative origin of GCB and ABC subtypes. Integrating COO with comprehensive genomic profiling enabled identification of features associated with COO and demonstrated the feasibility of determining COO without RNA.