Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
ngn1NM_1310417955ngr1    cb260    zNgn1    neurod3    chunp6899    neurogenin    neurog1   
ngn1NM_01089610090AKA    Math4C    Neurod3    neurogenin    Neurog1   
ngn1BC0086879606NEUROD3    AKA    Math4C    NEUROG1   
ngn1BC0282269606NEUROD3    AKA    Math4C    NEUROG1   
ngn1NM_0061619606AKA    Math4C    NEUROD3    NEUROG1   
ngn1AF0173017955
ngn1AY5183419031
ngn1AJ0126609031ath4c   

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

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Text2Knowledge ... Yong Huang 2002