Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HLA-B*440301 variantAH0131699606HLA-B   
HLA-B*440301 variantAY3512729606HLA-B   
HLA-B*440301 variantAY3512739606HLA-B   
HLA-B*440301 variantAH0133709606HLA-B   
HLA-B*440301 variantAY3303299606HLA-B   
HLA-B*440301 variantAY3303309606HLA-B   

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

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Text2Knowledge ... Yong Huang 2002