Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
U2AF1RS2BC0504519606U2AF1-RS2    U2AF1L2    300028
U2AF1RS2NM_0050899606U2AF1-RS2    U2AF1L2    300028

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

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Text2Knowledge ... Yong Huang 2002