High expression of ROR1 is typical for some B-cell lymphomas such as mantle cell lymphoma (MCL) (Barna et al., 2011) and chronic lymphocytic leukemia (CLL) (Baskar et al., 2008; DaneshManesh et al., 2008; Fukuda et al., 2008). Here, ROR1 is linked to B-cell chronic lymphocytic leukemia.