Serum tryptase levels in patients with psoriasis: a pilot study for a possible useful biomarker.

In psoriasis, biomarkers for disease prognosis and response to treatment may help clinicians to improve patient management. Hence, we decided to evaluate the role of serum tryptase (ST) in a sample of patients with psoriasis. We found higher levels of ST in patients with scalp psoriasis than in those without (6.1 vs. 4.6 ng/mL), in those with palmoplantar psoriasis than in those without (5.3 vs. 5 ng/mL) and, with less significance, in those with psoriatic arthritis than in those without (6.1 vs. 5.1 ng/mL).