Kidney biopsy revealed CD20+, CD23+, CD5−, CD10−, and BCL-2+ cells consistent with CLL origin, coexisting with CD3+/CD5+ T cells that formed nodular granulomas indicative of ATIN infiltrates, as in the patient reported by Kamat et al. [61]. The gene discussed is CD5; the disease is B-cell chronic lymphocytic leukemia.