Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Kcna4NM_02127510090Kv1.4    176266
Kcna4NW_04765710116
KCNA4AY4129719606176266
KCNA4AY4129729598
KCNA4AY41297310090176266
KCNA4NM_0022339606HK1    HBK4    PCN2    HPCN2    HUKII    KCNA8    KV1.4    KCNA4L    176266
KCNA4NM_1743719913
Kcna4NT_03920910090176266
KCNA4AH00539210090176266
KCNA4U0372210090176266
KCNA4U0372310090176266
Kcna4NM_01297110116Kv4    RK3    RHK1    KCHAN    Kv1.4   
KCNA4NT_0092379606176266

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

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Text2Knowledge ... Yong Huang 2002