Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PrhxNM_00824510090Hex    Prh    Hhex    604420
PRHXBC0143369606PRH    HEX    HMPH    HOX11L-PEN    HHEX    604420
PRHXBC0151109606PRH    HEX    HMPH    HOX11L-PEN    HHEX    604420
PRHXBC0506389606PRH    HEX    HMPH    HOX11L-PEN    HHEX    604420
PRHXNM_0027299606HEX    PRH    HMPH    HOX11L-PEN    HHEX    604420

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

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Text2Knowledge ... Yong Huang 2002