Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Brd4NM_02050810090Brd5    MCAP    HUNK1   
Brd4NM_19809410090Brd5    MCAP    HUNK1   
BRD4BC0301589606HUNKI    CAP    MCAP   
BRD4AY4180239606
BRD4AY4180249598
BRD4AY41802510090
BRD4AF3866499606
BRD4NM_0142999606CAP    MCAP    HUNKI   
BRD4NM_0582439606CAP    MCAP    HUNKI   
Brd4NT_03964910090
Brd4AF46139510090
Brd4AF46139610090
BRD4NT_0112959606

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

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Text2Knowledge ... Yong Huang 2002