Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Nkx-2.2NM_01091910090Nkx2.2    tinman    Nkx2-2   
Nkx-2.2U3156610090
Nkx-2.2S8325910095
Nkx-2.2AF1109949031

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

Google

Text2Knowledge ... Yong Huang 2002