The expression profiles of immune receptors 2B4 (CD244), CS1 (SLAMF7), LLT1 (CLEC2D), NKp46 (NCR1) and NKp30 (NCR3) were analyzed in the peripheral blood mononuclear cells of B-ALL and T-ALL subjects by single-cell RNA sequencing data obtained from the St. Here, CD244 is linked to acute lymphoblastic leukemia.