Increases the transcriptional activity of NFKB1 by facilitating its nuclear translocation, DNA-binding and associated apoptotic response, when overexpressed (PubMed:15735698). May sequester WWOX in lysosomal vesicles and thereby regulate WWOX role as tumor suppressor (PubMed:30285739). {ECO:0000269|PubMed:15735698, ECO:0000269|PubMed:30285739}. This is the function of VOPP1 (VOPP1 WW domain binding protein, Ensembl gene identifier ENSG00000154978).