Simple breath test could predict who benefits from asthma inhaler

NCT ID NCT06590740

First seen Nov 01, 2025 · Last updated May 02, 2026 · Updated 27 times

Summary

This study looked at 1000 adults with a long-term dry cough that might be cough-variant asthma. Researchers measured a breath marker called FeNO to see if it could predict who would feel better after 8 weeks of treatment with a common asthma inhaler (budesonide-formoterol). The goal was to find a cutoff value that helps doctors decide which patients are most likely to benefit from this medicine.

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Contacts and locations

Locations

  • Research Site

    Beijing, 100029, China

  • Research Site

    Beijing, 100034, China

  • Research Site

    Benxi, 117000, China

  • Research Site

    Chengdu, 610014, China

  • Research Site

    Chengdu, 610041, China

  • Research Site

    Chongqing, 400000, China

  • Research Site

    Dongguan, CN-523326, China

  • Research Site

    Fenyang, 032299, China

  • Research Site

    Fuzhou, 350005, China

  • Research Site

    Guangzhou, 510000, China

  • Research Site

    Guangzhou, 510163, China

  • Research Site

    Guangzhou, 510515, China

  • Research Site

    Guiyang, 550002, China

  • Research Site

    Heifei, 230011, China

  • Research Site

    Heze, 274400, China

  • Research Site

    Huizhou, 516002, China

  • Research Site

    Jiaxing, 314001, China

  • Research Site

    Jinhua, 321000, China

  • Research Site

    Liuzhou, 545006, China

  • Research Site

    Nanchang, 330006, China

  • Research Site

    Nanjing, 211100, China

  • Research Site

    Nanyang, 473000, China

  • Research Site

    Quanzhou, 362000, China

  • Research Site

    Shanghai, 201114, China

  • Research Site

    Shanghai, 310000, China

  • Research Site

    Shangqiu, 476100, China

  • Research Site

    Shenzhen, 518020, China

  • Research Site

    Shijiazhuang, 050001, China

  • Research Site

    Suzhou, 657299, China

  • Research Site

    Taiyuan, 030001, China

  • Research Site

    Taiyuan, 030032, China

  • Research Site

    Weifang, 261000, China

  • Research Site

    Wenzhou, 325000, China

  • Research Site

    Wenzhou, 325027, China

  • Research Site

    Xi'an, 710006, China

  • Research Site

    Xiangtan, 411228, China

  • Research Site

    Yantai, 264000, China

  • Research Site

    Zhengzhou, 450000, China

  • Research Site

    Zunyi, 563100, China

Conditions

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