Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CG8648AE0038057227Fen1   
CG8648NM_0790417227FEN1   
CG8648NT_0337787227FEN1   

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

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Text2Knowledge ... Yong Huang 2002