Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RPAC1BC0081189606RPA39    RPA40    RPA5    POLR1C   
RPAC1BC0088639606RPA39    RPA40    RPA5    POLR1C   
RPAC1NM_2032909606RPA5    RPA39    RPA40    POLR1C   
RPAC1NM_0048759606RPA5    RPA39    RPA40    POLR1C   

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

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Text2Knowledge ... Yong Huang 2002