New grass allergy shot shows promise in reducing hay fever symptoms

NCT ID NCT04687059

First seen Apr 30, 2026 · Last updated Apr 30, 2026

Summary

This study tested a treatment called PQ Grass 27600 SU for people with seasonal hay fever caused by grass pollen. The goal was to see if it could reduce symptoms and the need for allergy medication during peak pollen season. 119 adults took part, and the study compared the treatment to a placebo.

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Contacts and locations

Locations

  • Allergy Asthma & Sinus Center, S.C.

    Greenfield, Wisconsin, 53228, United States

  • Allergy Partners of Western North Carolina

    Asheville, North Carolina, 28801, United States

  • Allergy and Asthma Associates of Bluegrass

    Lexington, Kentucky, 40509, United States

  • Atlantic Research Center, LLC

    Ocean Township, New Jersey, 07712, United States

  • Bernstein Clinical Research Center, LLC

    Cincinnati, Ohio, 45231, United States

  • Chesapeake Clinical Research, Inc.

    White Marsh, Maryland, 21236, United States

  • Corning Center for Clinical Research

    Horseheads, New York, 14845, United States

  • ENT RESEARCH - Institut für klinische Studien

    Essen, Germany

  • Hamburger Institut für Therapieforschung GmbH

    Hamburg, Germany

  • Medaimun GmbH

    Frankfurt am Main, Germany

  • Smith Allergy & Asthma Specialists

    Cortland, New York, 13045, United States

  • Studienzentrum Dr. Sabine Laßmann

    Saalfeld, Germany

  • Universitatsmedizin Berlin - Charite Campus Mitte - Allergie Centrum Charite

    Berlin, Germany

  • Universitätsklinikum Carl Gustav Carus an der TU Dresden

    Dresden, Germany

Conditions

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