May participate in the nuclear signaling of EGFR and MAPK1/ERK2. May a have a role in metastasis. Mainly localized in the nucleus (PubMed:24735981). Highly expressed in testis. Protein kinase activity is reported (PubMed:24735981). However, no protein kinase domain is detected by any prediction method (PROSITE, Pfam). Its enzyme activity is therefore unsure. Extended N-terminus.