Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HOX2CBC0153459606HOX2    HHO.C1    Hox-2.3    HOXB7    142962
HOX2CNM_0045029606HOX2    HHO.C1    Hox-2.3    HOXB7    142962

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

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Text2Knowledge ... Yong Huang 2002