Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC56372BC0493057955GRF2    zgc:56372   
MGC56372NM_2011267955GRF2    zgc:56372   

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

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Text2Knowledge ... Yong Huang 2002