Reporting the response to anti-tumour necrosis factor treatment.

The author comments on the article "Therapeutic drug monitoring of patients with psoriasis during tumour necrosis factor (TNF)-α antagonist treatment using a novel interleukin-8 reporter cell line," by Y. Kimura and colleagues. Topics discussed include the link of tumour necrosis factor (TNF) with psoriasis, the importance of biopharmaceuticals for dermatology, and the impact of antidrug antibodies (ADAs) development for biologic therapy.