Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mPer1NM_01106510090Per    m-rigui    Per1   
mPer1BC03976810090Per    m-rigui    Per1   
mPER1AF0449119940
mper1AB03081810090

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

Google

Text2Knowledge ... Yong Huang 2002