Enriched in anal sphincter muscle; germ line; germline precursor cell; and head mesodermal cell based on tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including eat-2; elt-2; and sir-2.1 based on microarray and RNA-seq studies. Is affected by eight chemicals including manganese chloride; bisphenol S; and allantoin based on RNA-seq and microarray studies.