SLAMF7 and lymphopenia: The pooled RRs for neutropenia, anemia, thrombocytopenia, lymphopenia, pneumonia, diarrhea, and fatigue in the MAbs targeting SLAMF7 group vs control group were 0.77 (95%CI 0.64–0.92), 0.88 (95%CI 0.67–1.17), 0.97 (95%CI 0.73–1.28), 1.63 (95%CI 1.43–1.85), 1.32 (95%CI 0.88–1.98), 1.33 (95%CI 0.73–2.41), and 1.19 (95%CI 0.75–1.91), respectively (Fig. 7).