Your Query returns 15 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
gpsn2BC0532097955mg:db03b10    db03b10   
Gpsn2NM_13411810090SC2    D17Ertd178e    2410016D23Rik    A230102P12Rik   
GPSN2BC0138819606SC2    TER   
GPSN2BC0059529606SC2    TER   
GPSN2BC0024259606SC2    TER   
GPSN2BC0078019606SC2    TER   
GPSN2AY4135089606
GPSN2AY4135099598
GPSN2AY41351010090
GPSN2NM_1385019606SC2    TER   
GPSN2NM_0048689606SC2    TER   
Gpsn2NT_03946710090
Gpsn2BC01998410090SC2   
GPSN2NT_0112959606
gpsn2NM_2012997955cb250    db03b10    fj63b12    sb:cb250    mg:db03b10    wu:fj63b12   

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

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Text2Knowledge ... Yong Huang 2002