Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
DRB1*0101AF0127169870DRB1   
DRB1*0101AF01272530532DRB1   
DRB1*0101AF0129309749MHC Dele-DRB1   
DRB1*0101S406159606DRB   

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

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Text2Knowledge ... Yong Huang 2002