Clinical trials

The goal of this study is to evaluate the safety, tolerability and pharmacokinetics (PK) profiles of single ascending oral doses(SAD) of PG-033 by directly comparing it with placebo. Meanwhile, the impact of a high-fat meal on the pharmacokinetics of PG-033 will also be evaluated. The research will also explore the potential metabolites and metabolic pathways of PG-033 within the human body，as well as investigate the effect of PG-033 on the QTc interval.

The goal of this study is to evaluate the safety, tolerability and pharmacokinetics (PK) profiles of multiple ascending oral doses(MAD) of PG-033 by directly comparing it with placebo.

The study is a multicenter, randomized, double-blind, placebo-controlled seamless and adaptive-designed phase IIb/III study encompassing a phase IIb and a phase III component, phase IIb is a dose-ranging part and has been done, and phase III is a pivotal study part which is registered this time. The goal of this phase III study is to evaluate the efficacy, safety, and pharmacokinetics of PG-011 nasal spray for treating adults with moderate to severe seasonal allergic rhinitis (SAR). Investigators will compare PG-011 nasal spray to a placebo (a look-alike substance that contains no drug) to see if PG-011 nasal spray works to treat moderate to severe seasonal allergic rhinitis

This is a Multicenter, Randomized, Double-blind, Placebo-controlled seamless and adaptive-designed phase IIb/III study to Assess the Efficacy and Safety of topical use of PG-011 Gel in adolescents and Adults With Atopic Dermatitis. It consists of phase IIb and phase III parts, phase IIb is a dose-ranging part and has been done, and phase III is a pivotal study part which is registered this time. The goal of this phase III clinical trial is to learn if PG-011gel works to treat mild to moderate Atopic Dermatitis in adolescents and adults by topical use. It will also learn about the safety of PG-011gel. Investigators will compare PG-011gel to a placebo (a look-alike substance that contains no drug) to see if PG-011gel works to treat mild to moderate Atopic Dermatitis. Participants will: * Use PG-011gel or a placebo twice daily for initial 8 weeks, and followed by using PG-011 gel for all of the participants till 52-week. * Visit the clinic at weeks 1, 2, 4 and 8 for checkups and tests, and followed by visiting the clinic every 4 weeks till 52-week. * Keep a diary of their symptoms.