Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
U2AF1-RS2BC0504519606U2AF1RS2    U2AF1L2   
U2AF1-RS2NM_0050899606U2AF1RS2    U2AF1L2   
U2af1-rs2NM_1787941009035kDa    5031411E02Rik   
U2af1-rs2NM_0094531009035kDa    5031411E02Rik   
U2AF1-RS2D496779606
U2af1-rs2NT_03972610090
U2AF1-RS2AH00767131033
U2AF1-RS2AF14668731033

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

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Text2Knowledge ... Yong Huang 2002