To identify a common target for B-cell lymphoma in treatment, we analyzed a CD19+ B-cell transcriptomic dataset from the Gene Expression Omnibus (GEO) database, which consists of samples from normal participants (N = 6), chronic lymphocytic leukemia (CLL, N = 5), follicular lymphoma (FL, N = 10), and diffuse large B-cell lymphoma patients (DLBCL, N = 8). Here, CD19 is linked to B-cell chronic lymphocytic leukemia.