Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CD138NM_01151910090Synd    Synd1    syn-1    Sdc1   
CD138BC0087659606SDC    SYND1    SDC1   
CD138NM_0029979606SDC    SYND1    SDC1   
CD138BC01056010090syn-1    Sdc1   

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

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Text2Knowledge ... Yong Huang 2002