Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
GnRH1AF4672918128
Gnrh1NW_04745410116
GNRH1AY3994389606152760
GNRH1AY3994399598
GNRH1AY39944010090152760
GNRH1AY0835559544
GNRH1NM_0008259606GRH    GNRH    LHRH    LNRH    152760
GnRH1AF1105338022
GnRH1AF1109928022
GnRH1AB1048618128
Gnrh1AF0769618153
GNRH1NT_0236669606152760
Gnrh1NM_01276710116Gnrh    GNRHA    RGNRHG1   

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

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Text2Knowledge ... Yong Huang 2002