Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
POLR3KAY01602339110
POLR3KBC0119329606C11    RPC11    hRPC11    RPC10   
POLR3KNM_0163109606C11    RPC10    RPC11    hRPC11   
POLR3KNT_0378879606

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

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Text2Knowledge ... Yong Huang 2002