Your Query returns 29 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Sphk1NC_0043547227SK1    CG1747   
Sphk1NM_1324897227SK1    CG1747   
Sphk1NM_1672867227SK1    CG1747   
Sphk1AY1196527227
Sphk1NM_011451100901110006G24Rik    603730
Sphk1NM_025367100901110006G24Rik    603730
Sphk1NW_04734310116
SPHK1AH0128289606603730
SPHK1AY2785219606603730
SPHK1AY2785229606603730
SPHK1AY2785239606603730
SPHK1AY2785249606603730
SPHK1AY2785259606603730
SPHK1BC0080409606SPHK    603730
SPHK1BC0094199606SPHK    603730
SPHK1BC0041129606SPHK    603730
SPHK1BC0305539606SPHK    603730
SPHK1BC0144399606SPHK    603730
SPHK1AF2667569606603730
SPHK1AY4151289606603730
SPHK1AY4151299598
SPHK1AY41513010090603730
SPHK1NM_0219729606SPHK    603730
Sphk1NT_03952110090603730
Sphk1BC03771010090603730
SPHK1AY33556832630
SPHK1NM_1829659606SPHK    603730
SPHK1NT_0106419606603730
Sphk1NM_13338610116

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

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Text2Knowledge ... Yong Huang 2002