Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
p21-ArcNM_0057199606ARC21    ARPC3   
p21-ArcBC0677479606ARC21    ARPC3   
p21-ArcAB03824310090

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

Google

Text2Knowledge ... Yong Huang 2002