Your Query returns 13 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*5401AH0127529606HLA-B   
HLA-B*5401AY2504629606HLA-B   
HLA-B*5401AY2504639606HLA-B   
HLA-B*5401AY2504649606HLA-B   
HLA-B*5401AY2504659606HLA-B   
HLA-B*5401AY2504669606HLA-B   
HLA-B*5401AY2504679606HLA-B   
HLA-B*5401AY2504689606HLA-B   
HLA-B*5401AY2504699606HLA-B   
HLA-B*5401AJ4959069606
HLA-B*5401AJ4959609606
HLA-B*5401AJ4960149606
HLA-B*5401AJ5499159606

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

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Text2Knowledge ... Yong Huang 2002