Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*07021-4b274AH0093969606HLA-B   
HLA-B*07021-4b274AF1488099606HLA-B   
HLA-B*07021-4b274AF1488109606HLA-B   

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

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Text2Knowledge ... Yong Huang 2002