In order to evaluate the contribution of CEP-1 function in a C. elegans tumor model, we compared single-mutant glp-1(ar202gf);bcls39[P(lim-7)ced-1::GFP + lin-15(+)] worms to double-mutant cep-1(gk138);glp-1(ar202gf);bcls39[P(lim-7)ced-1::GFP + lin-15(+)] worms. Here, IFT122 is linked to neoplasm.