Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-DRB1*1207AH0103309606HLA-DRB1   
HLA-DRB1*1207AF3158259606HLA-DRB1   
HLA-DRB1*1207AF3166199606HLA-DRB1   

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

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Text2Knowledge ... Yong Huang 2002