Objective To assess the association of HLA DRB1 genes with pulmonary tuberculosis (PTB) and the correlation between HLA DRB1 alleles and clinical manifestations of patients with PTB.

目的探讨HLA DRB1基因多态性与肺结核（PTB）的遗传关联性及其与临床表现的关系。

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Patients with either of two genes associated with autoimmune disorders, HLA-DR2 and HLA-DR4, have gone five years without any progression of the disease.

FORBES: Two Steps Forward