RESUMEN
BACKGROUND: With programmed death-1 (PD-1) inhibitors becoming the standard treatment for lung cancer, PD-1-related adverse reactions and treatment have gradually become prominent. CASE SUMMARY: First reported case of tislelizumab-related enteritis successfully treated with adalimumab 40mg every 2 wk for 3 times in an advanced lung cancer patient who received first-line tislelizumab/pemetrexed/carboplatin for 4 cycles. The patient continued receiving the treatment of pemetrexed/carboplatin after symptoms, abdominal computed tomography and colonoscopy improved, significant diarrhea was not occurred. CONCLUSION: Adalimumab can be an effective treatment option for patients with PD-1 antibody related enteritis if they do not respond well to glucocorticoid treatment.