Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HOX12NM_0025869606G17    PBX2MHC    PBX2    176311
Hox12AH0095947739
Hox12AF2768137739
Hox12AF2768147739
HOX12D287699606176311
hox12AY55403439946

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

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Text2Knowledge ... Yong Huang 2002