Your Query returns 27 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
gpx1AL0237964896SPBC32F12.03c   
gpx1AJ2982815691
GPX1L377626183
gpx1AJ49367731243
gpx1AB0123954896
GPX1AF5329279823
GPX1AJ0004693702
gpx1AJ5826782711
Gpx1AF32733734373
GPX1AY1006894530
Gpx1NM_00816010090Gpx    CGPx    GPx-1    GSHPx-1    138320
Gpx1NW_04748310116
Gpx1NM_03082610116
GPX1AY3278189606138320
GPX1BC0007429606GSHPX1    MGC14399    138320
GPX1AF0293179606138320
GPX1AY4083039606138320
GPX1AY4083049598
GPX1AY40830510090138320
GPX1M213049606138320
GPX1M830949606138320
GPX1NM_0005819606GSHPX1    138320
GPX1NM_1740769913
Gpx1NT_03947710090138320
gpx1NC_0034234896SPBC32F12.03c   
GPX1NT_0225179606138320
GPX1NC_0011434932

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

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Text2Knowledge ... Yong Huang 2002