Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC2463BC0011299606STAG3   
MGC2463NM_0240709606STAG3   
MGC2463NM_0124479606STAG3   

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

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Text2Knowledge ... Yong Huang 2002