“…We did not observe any correlations between the response to ETN and age or gender. Only two of the 12 patients who switched from other TNF inhibitors, such as infliximab or adalimumab, responded to ETN (3,13,16,18,19,23,24,28,29,31,32), suggesting that physicians should avoid the use of ETN in patients with an inadequate response to other TNF inhibitors. Three patients requiring discontinuation of ETN due to infection have been reported (3,12,30).…”