PEX11B and leukemia: In mice, the deletion of a single allele of PEX11B, involved in proliferation and fatty acid transport, was sufficient to cause oxidative stress and neuronal death (Ahlemeyer et al., 2012) Genome wide association studies revealed a relation of peroxisomal fatty oxidation genes with susceptibility for and treatment outcome of leukemia (Di Bernardo et al., 2008; Wade et al., 2011).