After stimulation with ML2044, the supernatants of PB patients had a higher level of IL-4 (median 46 pg/ml) than those of HHCs (median 5.24 pg/ml, p = 0.0004), ECs (median 5.24 pg/ml, p = 0.0026), or TB patients (median 5.24 pg/ml, p = 0.0005). This evidence concerns the gene IL4 and tuberculosis.