Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Gcn5l2NM_020004100901110051E14Rik    602301
GCN5L2BC0399079606GCN5    602301
GCN5L2BC0327439606GCN5    602301
GCN5L2AY4020039606602301
GCN5L2AY4020049598
GCN5L2AY40200510090602301
GCN5L2NM_0210789606GCN5    602301
Gcn5l2NT_03952110090602301
Gcn5l2BC06375210090602301
Gcn5l2BC00398310090602301
GCN5L2NT_0107559606602301
GCN5L2NM_2043299031

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

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Text2Knowledge ... Yong Huang 2002