SORT1 and B-cell chronic lymphocytic leukemia: Figure 3 shows that sortilin is expressed in leukemic cells but not in healthy PBMC. MAb 2D8 also detected sortilin in CLL cell lines including 232-B4, WA-C3CD5+ and I83-E95 (Figure 3). Caov-4 ovarian carcinoma cell line was used as positive control 12.