The negative impact of CD200 on remission probability was maintained in multivariate analysis (p = 0.04), along with more conventional factors such as age (p = 0.002), type of leukemia (p = 0.002), CD34 positivity (p = 0.008) and unfavorable cytogenetic risk (p = 0.0025) (Table 3). The gene discussed is CD34; the disease is leukemia.