Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
ArixNM_00888710090Pmx2    Phox2    Pmx2a    Phox2a    602753
ARIXBC0415649606PMX2A    NCAM2    CFEOM2    FEOM2    PHOX2A    602753
ARIXNM_0051699606FEOM2    NCAM2    PMX2A    CFEOM2    MGC52227    PHOX2A    602753
ArixNW_04756210116
ARIXAH0056139606602753
ARIXAF0227229606602753
ARIXAF0227239606602753
ARIXAF0227249606602753
ARIXAF3648189606PHOX2A    602753
ArixNM_05386910116

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

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Text2Knowledge ... Yong Huang 2002