Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Nkx2.1NM_00938510090T/EBP    Ttf-1    Nkx2-1    tinman    Nkx-2.1    Titf1   
NKX2.1BC0062219606NKX2A    TTF-1    TTF1    TEBP    TITF1   
Nkx2.1BC05760710090T/EBP    Nkx-2.1    tinman    Titf1   
NKX2.1NM_0033179606BCH    BHC    TEBP    TTF1    NKX2A    TTF-1    TITF1   
NKx2.1AJ2236189031
Nkx2.1AF0743749555
NKX2.1NM_2046169031

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

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Text2Knowledge ... Yong Huang 2002