Since a suppressive effect of CD4+CD39+FoxP3+ Treg cells was described in TB patients [12], we also analysed the frequency of CD39+FoxP3+ cells in PBMC but observed no differences between LL and TT/BT patients except for few LL skin lesions, in which macrophage-shaped CD39+ cells were observed. The gene discussed is ENTPD1; the disease is tuberculosis.