Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Merg1NM_01356910090LQT    ERG1    Lqt2    M-erg    Kcnh2   
Merg1BC05101610090M-erg    LQT    ERG1    Kcnh2   
Merg1BC05123310090M-erg    LQT    ERG1    Kcnh2   
Merg1AF01286810090
Merg1AF01286910090
Merg1AH00678810090
Merg1AF01287010090
Merg1AF01287110090

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

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Text2Knowledge ... Yong Huang 2002