CD84 and diffuse large B-cell lymphoma: Using single-cell RNA sequencing (scRNA-seq) and mass cytometry (CyTOF), Shi et al. (2022) identified a diagnostic biomarker panel comprising 12 biomarkers, including SLAMF5/CD84, that were overexpressed in 18 patients with relapsed/refractory DLBCL versus 5 healthy volunteers [60].