Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
TRIM21BC0108619606RO52    SSA    RNF81    SSA1   
TRIM21NM_0031419606SSA    RO52    RNF81    SSA1   
Trim21NM_00927710090Ro52    Ssa1   
Trim21NT_07852910090
Trim21BC01058010090Ro52   

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

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Text2Knowledge ... Yong Huang 2002