Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Smstr2NM_00921710090sst2    SSTR-2    Smstr-2    Sstr2   
Smstr2NM_01934810116Sstr2   

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

Google

Text2Knowledge ... Yong Huang 2002