Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
dNicastrinNM_1430407227Nct    Nic    S5A    agro    CG7012    Nicastrin   
dNicastrinNM_2065687227Nct    Nic    S5A    agro    CG7012    Nicastrin   
dNicastrinNT_0337777227Nct    Nic    S5A    agro    CG7012    Nicastrin   

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

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Text2Knowledge ... Yong Huang 2002