Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
TOP3BC0517489606TOP3A   
TOP3NM_0046189606TOP3A   
TOP3NC_0043547227CG3458    top3[beta]    Top3beta   
TOP3NM_0785047227CG3458    top3[beta]    Top3beta   
TOP3AF0999097227
TOP3AF0570326239
top3AF1262874896
top3AL0235544896SPBC16G5.12c   
TOP3U190274932
TOP3U434319606
top3NC_0034234896SPBC16G5.12c   
TOP3NC_0011444932EDR1   

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

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Text2Knowledge ... Yong Huang 2002