TNF and rheumatoid arthritis: Moreover, a more recent study by the same Swedish group suggested no increase in lymphoma risk for patients with RA starting a first bDMARD (TNF inhibitor or non-TNF-inhibitor drug; n = 16,392) compared with bDMARD-naïve patients (n = 55,253) and no signals of different risk with any particular TNF inhibitor agent [162].