Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
U1APBC0003429606RNPU1Z    RPU1    U1RNP    U170K    SNRP70   
U1APBC0013159606RNPU1Z    RPU1    U1RNP    U170K    SNRP70   
U1APNM_0030899606RPU1    U170K    U1RNP    RNPU1Z    SNRP70   

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

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Text2Knowledge ... Yong Huang 2002