Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC56157BC0642977955Rgs19ip1    zgc:56157   
MGC56157BC0459537955Rgs19ip1    zgc:56157   
MGC56157NM_2009307955Rgs19ip1    zgc:56157   

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

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Text2Knowledge ... Yong Huang 2002