Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
COPN2BC0536589606MGC16924    CPN2    CPNE2   
COPN2NM_1527279606CPN2    MGC16924    CPNE2   

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

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Text2Knowledge ... Yong Huang 2002