Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Stag3NM_01696410090SA-2    608489
Stag3NW_04736910116
STAG3BC0011299606MGC2463    608489
STAG3AJ0077989606608489
Stag3NT_08089710090608489
stag3AJ00567810090608489
Stag3AY02788010116
STAG3NT_0079339606608489
STAG3NM_0240709606MGC2463    608489
STAG3NM_0124479606MGC2463    608489
Stag3NM_05373010116
STAG3NT_0795959606608489

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

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Text2Knowledge ... Yong Huang 2002