Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
SYNDECABC06183410116HSPG    Synd1    Sdc1   
SYNDECANM_01302610116HSPG    Synd1    Syndecan    Sdc1   

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

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Text2Knowledge ... Yong Huang 2002