Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Bhlhb2lNM_02446910090DEC2    Sharp1    Bhlhb3   
Bhlhb2lBC03774210090DEC2    Sharp1    Bhlhb3   

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

Google

Text2Knowledge ... Yong Huang 2002