Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RNR-1NM_01361310090NOT    HZF-3    Nurr1    TINOR    TINUR    Nr4a2   
rnr-1NC_0032816239T23G5.1    CELK00614   
rnr-1NM_0666386239T23G5.1    CELK00614   
RNR-1L0859510116
rnr-1Z191586239

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

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Text2Knowledge ... Yong Huang 2002