When we compared the mean values of lung uptake of labelled anti-TNFα mAb in sarcoidosis patients and control subjects, we found significant differences at 6 h (4.28 ± 0.57 versus 3.2 ± 0.74; patients versus controls; P = 0.002) but not at 24 h (3.15 ± 0.45 versus 2.7 ± 0.65; patients versus controls; P = 0.057). This evidence concerns the gene TNF and sarcoidosis.