Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RHOGAP1BC0181189606CDC42GAP    RHOGAP    ARHGAP1   
RHOGAP1NM_0043089606RHOGAP    CDC42GAP    ARHGAP1   

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

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Text2Knowledge ... Yong Huang 2002