Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC63516BC0551307955ATP6V1A    zgc:63516   
MGC63516NM_2011357955ATP6V1A    zgc:63516   

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

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Text2Knowledge ... Yong Huang 2002