Successful treatment after toxic epidermal necrolysis induced by AZD-9291 in a patient with non-small cell lung cancer:A case report

BACKGROUND Toxic epidermal necrolysis and Stevens-Johnson syndrome are acute lifethreatening skin reactions.AZD9291 has been developed as a third-generation epidermal growth factor receptor(EGFR)-tyrosine kinase inhibitor(TKI)with activity against T790M mutation.CASE SUMMARY Herein we report a 68-year-old woman who developed a large area of skin necrosis and was diagnosed with toxic epidermal necrolysis after AZD-9291 ingestion.To the best of our knowledge,this is the first case reported in patients with EGFR T790M mutation in non-small cell lung cancer(NSCLC).Cabozantinib combined with erlotinib had clinically meaningful effectiveness,with additional toxicity that was generally manageable.CONCLUSION Treatment with AZD-9261 is effective in regressing the growth of the NSCLC and can bring some hope to despairing patients.We hope that more research will be carried out on the association between severe rashes and EGFR-TKIs,and more safe and effective drugs can be developed.