PGRNAlso known as granulin‐epithelin precursor, proepithelin, acrogranin, and GP88/PC cell–derived growth factorAutocrine growth factor with 593 amino acidsContains 7.5 repeats of a cysteine‐rich motifInvolved in embryogenesis, wound healing, countering inflammation, host defense, acting as neurotrophic factorHigh levels associated with several human cancers. This evidence concerns the gene GRN and cancer.