Skin test may personalize asthma care for kids

NCT ID NCT04699604

First seen Jun 27, 2026 · Last updated Jul 02, 2026 · Updated 2 times

Summary

This study tests whether a skin test that measures histamine response can help doctors decide if adding an antihistamine (Levocetirizine) to standard asthma treatment improves control in children aged 6-17 with allergic asthma. About 300 African American/Black and Caucasian/White children will be randomly assigned to receive either the antihistamine or a placebo for 6 weeks, then switch. The goal is to see if the skin test predicts who benefits most from antihistamine therapy.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Levocetirizine (Xyzal)
What this could lead to
If successful, this could provide a simple skin test to identify which children with allergic asthma would benefit from adding an antihistamine to their current treatment.
What could go wrong
This is a Phase 3 trial, but it is still testing a biomarker approach. The antihistamine may not improve asthma control for all children, and results may vary by race or phenotype.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Children's Mercy Hospital

    Kansas City, Missouri, 64108, United States

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