A novel online calculator based on clinical features and hematological parameters to predict total skin clearance in patients with moderate to severe psoriasis.

"Declarations Ethics approval and consent to participateThis study protocol was reviewed and approved by the Medical Ethical Committee of Shanghai Skin Disease Hospital (approval #2020-36). Consent to participateWritten informed consent was obtained from all participating patients. Consent for publicationNot applicable. Competing interestsThe authors have no competing interests to declare. Competing interests The authors have no competing interests to declare."

"Funding This work was sponsored by grants from National Natural Science Foundation of China (No. 81872522, 82073429, 82203913), Innovation Program of Shanghai Municipal Education Commission (No. 2019-01-07-00-07-E00046), Clinical Research Plan of SHDC (No. SHDC2020CR1014B), Program of Shanghai Academic Research Leader (No. 20XD1403300) and the Fundamental Research Funds for the Central Universities (No. 22120220602)."

"Trial registration A multi-center clinical study of systemic treatment strategies for psoriasis in Chinese population;ChiCTR2000036186; Registered 31 August 2020; https://www.chictr.org.cn/showproj.html?proj=58256 ."