Study Purpose

The reason for this study is to see if the study drug LY3454738 is safe and effective as treatment for participants with hives that are caused by chronic spontaneous urticaria (CSU) and that are not controlled with H1-antihistamines.

Time Commitment

The study will last about 39 weeks and may include up to 18 visits.

Key Participation Requirements Tool Tip Icon

All clinical trials have rules about who can participate. This section outlines some of those rules. Please contact a study center to discuss the full set of criteria

Gender

Male Female

Age

18 years
65 years

-Must agree to use appropriate birth control throughout the study

-Must have a diagnosis of CSU for at least 6 months

-Must have CSU symptoms for at least 8 consecutive weeks despite taking anti-histamines

-Must agree to take an anti-histamine every day during the trial

-Must be willing to enter information about symptoms in an electronic diary twice a day

-Must not have a cause, other than CSU, for itching, hives, and/or angioedema (swelling beneath the skin)

-Must not have a current or recent active infection requiring antibiotics

-Must not have a history of anaphylaxis (severe, life threatening allergic reaction)

-Must not have asthma requiring medications other than short acting beta agonists (albuterol, etc.)

-Must not have received prior treatment with omalizumab, ligelizumab, or other experimental biologic for CSU

Where to Participate

Where to Participate

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