Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
COPN1BC0011429606CPN1    MGC1142    CPNE1   
COPN1NM_0039159606CPN1    MGC1142    CPNE1   
COPN1NM_1529259606CPN1    MGC1142    CPNE1   
COPN1NM_1529269606CPN1    MGC1142    CPNE1   
COPN1NM_1529279606CPN1    MGC1142    CPNE1   
COPN1NM_1529289606CPN1    MGC1142    CPNE1   
COPN1NM_1529299606CPN1    MGC1142    CPNE1   
COPN1NM_1529309606CPN1    MGC1142    CPNE1   
COPN1NM_1529319606CPN1    MGC1142    CPNE1   

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

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Text2Knowledge ... Yong Huang 2002