However, one aspect observed by Sweiss et al. that was not taken into account in our study was the absence of a difference in lymphocyte subpopulations in patients taking different classes of drugs for the treatment of sarcoidosis (such as methotrexate, azathioprine, leflunomide, mycophenolate mofetil, prednisone, or tumor necrosis factor-alpha inhibitors). This evidence concerns the gene TNF and sarcoidosis.