ft15 allele is a gain-of-function mutation in sgk-1. sgk-1(ft15) mutants have normal body size and normalize the small body size of rict-1 loss-of-function mutants. Reference: Jones KT, et al. PLos Biol. 2009 Mar 3;7(3):e60. doi: 10.1371/journal.pbio.1000060. PMID: 19260765.