Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
phox2aNM_1313847955arx   
PHOX2AAF3648189606ARIX    602753
phox2aAY3714968355
phox2aAY3714978355
Phox2aNM_00888710090Arix    Pmx2    Phox2    Pmx2a    602753
PHOX2ABC0415649606PMX2A    NCAM2    ARIX    CFEOM2    FEOM2    602753
PHOX2AAJ3202709606602753
Phox2aNT_07852910090602753
PHOX2ANT_0339279606602753
PHOX2ANM_0051699606ARIX    FEOM2    NCAM2    PMX2A    CFEOM2    MGC52227    602753

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

Google

Text2Knowledge ... Yong Huang 2002