Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RENT2NM_0805999606HUPF2    KIAA1408    DKFZP434D222    UPF2    605529
RENT2NM_0155429606HUPF2    KIAA1408    DKFZP434D222    UPF2    605529
RENT2AF3010139606605529

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

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Text2Knowledge ... Yong Huang 2002