Your Query returns 34 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Kcnh2NM_01356910090LQT    ERG1    Lqt2    M-erg    Merg1    152427
Kcnh2NW_04768710116
KCNH2BC0043119606HERG    LQT2    Kv11.1    HERG1    ERG1    152427
KCNH2AY3800449606HERG    152427
KCNH2AY3800459606HERG    152427
KCNH2AY3800469606HERG    152427
KCNH2AY3800479606HERG    152427
KCNH2AY3800489606HERG    152427
KCNH2AY3800509606HERG    152427
KCNH2AY3800519606HERG    152427
KCNH2AY3800529606HERG    152427
KCNH2AY3800539606HERG    152427
KCNH2AY3800549606HERG    152427
KCNH2AY3800559606HERG    152427
KCNH2AY3800569606HERG    152427
KCNH2AY3800499606HERG    152427
KCNH2AC0112349606152427
KCNH2AY4074339606152427
KCNH2AY4074349598
KCNH2AY40743510090152427
KCNH2AF3636369606HERG    152427
KCNH2AJ6096149606152427
KCNH2NM_0002389606ERG1    HERG    LQT2    HERG1    Kv11.1    152427
KCNH2NM_1720569606ERG1    HERG    LQT2    HERG1    Kv11.1    152427
KCNH2NM_1720579606ERG1    HERG    LQT2    HERG1    Kv11.1    152427
Kcnh2NT_03929910090152427
Kcnh2BC05101610090M-erg    Merg1    LQT    ERG1    152427
Kcnh2AY37442410090152427
Kcnh2BC05123310090M-erg    Merg1    LQT    ERG1    152427
KCNH2NT_0079149606152427
KCNH2NT_0795969606152427
Kcnh2NM_05394910116ERG1   
KCNH2AY5208389606152427
KCNH2BC0019149606HERG    LQT2    Kv11.1    HERG1    ERG1    152427

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

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Text2Knowledge ... Yong Huang 2002