Although the other prognostic genes were not enriched by DAVID, we speculated that they (except NIPAL2) may be involved in ALL similar to the enriched genes because all these genes belonged to the same (turquoise) module as REN and RIMS2 and the functions of green and turquoise modules were shown to be similar in userListEnchment analysis (Table 1). This evidence concerns the gene NIPAL2 and acute lymphoblastic leukemia.