Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Gpcr5-1NM_02221610116P2Y4    Gpr20   
Gpcr5-1NW_04778010116

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

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Text2Knowledge ... Yong Huang 2002