Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mkp2AL0218134896cmk2    SPAC23A1.06c   
MKP2BC0145659606HVH2    MKP-2    TYP    DUSP4    602747
MKP2BC0026719606HVH2    MKP-2    TYP    DUSP4    602747
MKP2NM_0013949606TYP    HVH2    MKP-2    DUSP4    602747
MKP2NM_0571589606TYP    HVH2    MKP-2    DUSP4    602747
Mkp2NM_02219910116Mkp-2    Dusp4   
mkp2AF0775484754

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

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Text2Knowledge ... Yong Huang 2002