Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
ERC55BC0048929606E6BP    ERC-55    RCN2    602584
ERC55NM_0029029606E6BP    ERC-55    RCN2    602584

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

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Text2Knowledge ... Yong Huang 2002