Blandt patienter med reumatoid artrit, psoriasis artrit, ankyloserende spondylitis og plaque psoriasis i placebokontrollerede, aktivt- kontrollerede og åbne forsøg med Enbrel, indbefattede de rapporterede alvorlige bivirkninger maligniteter (se nedenfor), astma, infektioner (se nedenfor), hjerteinsufficiens, hjerteinfarkt, myocardial iskæmi, brystsmerte, besvimelsesanfald, cerebral iskæmi, hypertension, hypotension, galdeblærebetændelse, bugspytkirtelbetændelse, gastrointestinal blødning, bursitis, forvirring, depression, dyspnø, abnorm opheling, renal insufficiens, nyresten, dyb venetrombose, lungeemboli, membranøs glomerulonephropathi, polymyositis, thrombophlebitis, leverskade,
Among rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis and plaque psoriasis patients in placebo-controlled, active-controlled, and open-label trials of Enbrel, serious adverse events reported included malignancies (see below), asthma, infections (see below), heart failure, myocardial infarction, myocardial ischaemia, chest pain, syncope, cerebral ischaemia, hypertension, hypotension, cholecystitis, pancreatitis, gastrointestinal haemorrhage, bursitis, confusion, depression, dyspnoea, abnormal healing, renal insufficiency, kidney calculus, deep vein thrombosis, pulmonary embolism, membranous glomerulonephropathy, polymyositis, thrombophlebitis, liver damage, leucopenia, paresis, paresthesia, vertigo, allergic alveolitis, angioedema, scleritis, bone fracture, lymphadenopathy, ulcerative colitis, intestinal obstruction, eosinophilia, haematuria, and sarcoidosis.