81 Participants NeededMy employer runs this trial

THB335 for Hives

Recruiting at 14 trial locations
CT
Overseen ByClinical Trials Monitor
Age: 18+
Sex: Any
Trial Phase: Phase 2
Sponsor: Calixis Inc.
Prior Safety DataThis treatment has passed at least one previous human trial

What You Need to Know Before You Apply

What is the purpose of this trial?

THB335-201 is a Phase 2, randomized, double-blind, placebo-controlled, parallel-group, multicenter study in adults with CSU who remain symptomatic despite standard-of-care treatment. The study includes a Screening Period of up to 4 weeks, a 12-week Treatment Period, and a 4-week Follow-Up Period, for a total participant duration of approximately 20 weeks.

Are You a Good Fit for This Trial?

This trial is for adults aged 18–85 who have had chronic hives (CSU) for at least 6 months and still have symptoms despite taking standard antihistamines. Participants must meet certain activity score levels, fall within specific weight and BMI ranges, and be willing to follow study procedures.

Inclusion Criteria

I am between 18 and 85 years old.
I have had chronic hives for at least 6 months.
I still have chronic hives even after taking a second-generation antihistamine.
See 4 more

Exclusion Criteria

Positive urine drug screen at Screening
Any medical or psychiatric condition that could place participant at increased risk, interfere with study assessments, or affect ability to complete study as judged by investigator
Pregnancy or breastfeeding
See 9 more

What Are the Treatments Tested in This Trial?

Interventions

  • THB335 Higher Dose
  • THB335 Lower Dose

Trial Overview

The study tests two different doses of a new drug called THB335 compared to a placebo in people with CSU. Participants are randomly assigned to one of the groups without knowing which treatment they receive. The trial lasts about 20 weeks including screening, treatment, and follow-up.

How Is the Trial Designed?

3

Treatment groups

Experimental Treatment

Placebo Group

Group I: THB335 Lower DoseExperimental Treatment1 Intervention
Group II: THB335 Higher DoseExperimental Treatment1 Intervention
Group III: PlaceboPlacebo Group1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

Calixis Inc.

Lead Sponsor