Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Kir2.1NM_00842510090IRK1    Kcnf1    Kcnj2    600681
KIR2.1NM_0008919606IRK1    LQT7    HHIRK1    HHBIRK1    KCNJ2    600681

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

Google

Text2Knowledge ... Yong Huang 2002