TNFSF13B and ductal breast carcinoma in situ: BAFF was positive in all but one cases of cancer, with an H-score ranging from 30–288 (mean = 145, median 147), in all cases of DCIS (mean H-score = 163, median 184, range 44–200), in all assayed cases of ducts (range 145–300) and in all three assayed cases of normal lobules (H-score range 140–200).