ABCA4 and B-cell chronic lymphocytic leukemia: Genes in Table 3 also corresponded to the 16 highest values of ABCR. Eleven genes showed an AUC < 0.5 and they were accordingly considered as under-expressed in FL, CLL in comparison with NBC, while the remaining 5 genes showed an AUC > 0.5 and were considered as over-expressed.