Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
BEC2NM_0122859606ELK1    Kv12.3    KCNH4   
Bec2NM_05363010116Kcnh4   

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

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Text2Knowledge ... Yong Huang 2002