Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mRBP31NM_0090901009033kDa    Rpo2-3    Polr2c   
mRBP31BC0020231009033kDa    Polr2c   

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

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Text2Knowledge ... Yong Huang 2002