Enriched in amphid sheath cell; germ line; pharyngeal cell; pharyngeal-intestinal valve; and in male based on tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including cyc-1; numr-2; and numr-1 based on microarray and RNA-seq studies. Is affected by nineteen chemicals including ethanol; methylmercuric chloride; and rotenone based on RNA-seq and microarray studies.