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Hepatocellular carcinomas along with several testicular seminomas, gliomas and melanomas showed moderate cytoplasmic immunoreactivity. Cancers in general were weakly stained or negative.
The protein encoded by this gene is a member of the Sprouty family of proteins and is phosphorylated by tyrosine kinase in response to several growth factors. The encoded protein can act as a homodimer or as a heterodimer with SPRED2 to regulate activation of the MAP kinase cascade. Defects in this gene are a cause of neurofibromatosis type 1-like syndrome (NFLS). [provided by RefSeq, Jul 2008]