In a recent study by McElwee and coworkers (McElweeet al.,2003), the authors described an insulin-like peptide (ins-7
/zc334.2) which, when inhibited by RNAi, resulted in increased lifespan of the long-lived C. elegans mutant daf-2
. To preventconfusion, we would like to point out that this paper usedan older naming convention for the insulin-like peptides in C.elegans, and that zc334
.2 now corresponds to ins-30
(Pierceet al., 2001).