Subsequent mining of Oncomine and Gene Expression Omnibus databases revealed under-expression of NKAIN2 in human brain, central nerve system (http://www.oncomine.org/resource/login) and ovarian (http://www.ncbi.nlm.nih.gov/sites/GDSbrowser?acc=GDS3592) cancers compared to corresponding normal controls. This evidence concerns the gene NKAIN2 and cancer.