Your Query returns 6 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Rsk1NM_00909710090Rps6ka1    601684
RSK1BC0149669606HU-1    RSK    MAPKAPK1A    RPS6KA1    601684
RSK1NM_0029539606RSK    HU-1    MAPKAPK1A    RPS6KA1    601684
Rsk1BC04907610090Rps6ka1    601684
RSk1U557684530
rSK1AF00097310116

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002