Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Slc6a1NM_17870310090Gabt    Gat1    XT-1    Gabt1    Xtrp1    GABATR    GABATHG    A730043E01    137165
SLC6A1BC0339049606GABATR    GAT1    GABATHG    137165
SLC6A1AY4139319606137165
SLC6A1AY4139329598
SLC6A1AY41393310090137165
SLC6A1NM_0030429606GAT1    GABATR    GABATHG    137165
Slc6a1NT_03935310090137165
Slc6a1BC05908010090A730043E01    XT-1    Gat1    GABATR    GABATHG    137165
SLC6A1NT_0225179606137165

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

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Text2Knowledge ... Yong Huang 2002