Enriched in head mesodermal cell based on tiling array; RNA-seq; single-cell RNA-seq; and microarray studies. Is affected by several genes including daf-16; daf-2; and skn-1 based on microarray; tiling array; and RNA-seq studies. Is affected by thirteen chemicals including 1-methylnicotinamide; bisphenol S; and stavudine based on RNA-seq and microarray studies.