Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RhoGAP4NM_0016669606C1    KIAA0131    RGC1    ARHGAP4   
RhoGAP4BC0523039606C1    KIAA0131    RGC1    ARHGAP4   
RhoGAP4BC0236269606C1    KIAA0131    RGC1    ARHGAP4   

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

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Text2Knowledge ... Yong Huang 2002