Enriched in hypodermis; sensory neurons; and ventral cord blast cell based on microarray; tiling array; RNA-seq; and single-cell RNA-seq 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 twenty-nine chemicals including hydrogen sulfide; methylmercury hydroxide; and 1-methylnicotinamide based on microarray and RNA-seq studies. Is predicted to encode a protein with the following domains: Thrombospondin type-1 (TSP1) repeat superfamily; PAN domain; and PAN/Apple domain.