Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
U1-95.2NR_0020777227K5    U1    CR32866    U1snRNA    U1a-95Cb    snRNA:U1    snRNA:U1:95Cb   
U1-95.2NT_0337777227K5    U1    CR32866    U1snRNA    U1a-95Cb    snRNA:U1    snRNA:U1:95Cb   
U1-95.2X535447227

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

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Text2Knowledge ... Yong Huang 2002