Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Kcnh1NM_01060010090M-eag    603305
Kcnh1NW_04740310116
Kcnh1NM_03174210116
KCNH1NM_0022389606EAG    EAG1    h-eag    Kv10.1    603305
KCNH1NM_1723629606EAG    EAG1    h-eag    Kv10.1    603305
KCNH1NM_1743729913
Kcnh1NT_03919010090603305
KCNH1NT_0218779606603305

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

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