Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Kcna2NM_00841710090Mk-2    Kv1.2    Akr6a4    Kca1-2   
Kcna2NW_04762710116
KCNA2NM_0049749606HK4    MK2    HBK5    NGK1    RBK2    HUKIV    KV1.2   
Kcna2NT_03923910090
Kcna2NM_01297010116BK2    NGK1   
KCNA2NT_0192739606

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

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Text2Knowledge ... Yong Huang 2002