Co-immunoprecipitation and gene knockout studies have shown that Pin1 interacts with multiple AUBPs (AUF1, HuR, and KSRP,) and RNA-binding protein (SLBP) in tumor and immune cells [30,31,36] (Table 1) although the interaction may depend on cell type and environmental stimuli. The gene discussed is KHSRP; the disease is neoplasm.