Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Synd2NM_00830410090Hspg1    syndecan-2    Sdc2   
SYND2BC0498369606HSPG    HSPG1    SDC2   
SYND2BC0301339606HSPG    HSPG1    SDC2   
SYND2NM_0029989606HSPG    HSPG1    SDC2   

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

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Text2Knowledge ... Yong Huang 2002