Clinical trial Recruiting at 167 sites Phase 2 Interventional Ages 18 to 75

Compare a new climate-friendly CHF5993 inhaler to standard inhalers for adults with mild to moderate asthma

Official title: A Phase II Multinational, Multicentre, Double-blind, Randomised, Active-controlled, 3-way Cross-over Study to Evaluate the Therapeutic Equivalence of CHF5993 pMDI 100/6/12.5 µg HFA-152a Versus CHF5993 pMDI 100/6/12.5 µg HFA-134a in Subjects With Mild to Moderate Asthma

Run by Chiesi Farmaceutici S.p.A. · NCT07301736 · Data updated 2026-11-12

This trial will see if a CHF5993 inhaler that uses a new climate-friendly propellant works the same and is as safe as standard inhalers for adults with mild to moderate asthma.

More Asthma trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment780 (estimated)
SponsorChiesi Farmaceutici S.p.A.
Industry-sponsored
Drugs / interventionsomalizumab, mepolizumab, reslizumab, benralizumab, dupilumab, tezepelumab
Locations167 sites (Buenos Aires and 166 other locations)
StatusRecruiting
StartedDecember 17, 2025
Main results expectedJune 3, 2027
Study endsJune 3, 2027
Registry record updatedJune 25, 2026
Trial IDNCT07301736 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–75 with a diagnosis of asthma before age 50, stable on low or medium dose ICS (with or without LABA), controlled or partly controlled (ACQ‑7 <1.5), pre‑bronchodilator FEV1 between >40% and <90% predicted, and demonstrated bronchodilator reversibility (>12% and >200 mL).

Probably not a fit

People with severe or uncontrolled asthma, current heavy smokers, those outside the BMI range 18–35 kg/m2, or those who do not meet the lung function and reversibility criteria are unlikely to benefit from participating.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 2 randomized study compares CHF5993 pMDI using a low‑global‑warming propellant (HFA‑152a) with CHF5993 and CHF718 pMDIs using the existing HFA‑134a propellant. Approximately 468 adults (18–75 years) with mild to moderate, stable asthma and documented bronchodilator reversibility will be enrolled across sites in Europe, Latin America, Ukraine, South Africa and the UK. Participants will remain on stable low- or medium-dose ICS therapy (with or without LABA) and will be randomized to one of the inhaler formulations to measure lung function (FEV1), safety, tolerability and asthma control. The goal is to determine whether the HFA‑152a formulation provides equivalent clinical performance and safety to the current propellant formulations while offering lower environmental impact.

Why it matters

Potential benefit: If successful, patients could use an inhaler that delivers the same asthma control and safety while reducing the inhaler's global warming impact.

How similar studies have gone: Formulation-switch and propellant-equivalence studies for pMDIs have previously shown comparable clinical performance for other agents, but clinical data specifically for HFA‑152a are still limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male and female adults (18 ≤ age ≤ 75 years) with a diagnosis of Asthma for at least 6 months prior to screening and with diagnosis before the age of 50 years;
* Non-smokers, ex-smokers;
* Body mass index: within the range of 18.0 to 35.0 kg/m2 inclusive;
* Stable asthma therapy: a stable maintenance treatment for at least 4 weeks prior to screening with:

  1. low or medium doses of ICS (Inhaled Corticosteroids) alone; or
  2. low or medium doses of ICS + LABA (Long-acting β2-agonist) (fixed or free combination).
* Controlled or partly controlled based on an Asthma Control Questionnaire - 7 Items (ACQ-7) score \<1.5 at screening and at randomisation.
* Pre-BD (Bronchodilator) FEV1 \>40% and \<90% of the predicted normal value, after appropriate wash out from BDs, at the Screening Visit (V1).
* A demonstrated increase in either FEV1 or forced vital capacity of \>12% and \>200 mL from baseline within 30 minutes (min) after inhalation of 400 µg salbutamol (i.e. albuterol) pMDI at the Screening Visit (V1).

Exclusion Criteria:

* History of near fatal asthma or hospitalisation for asthma in intensive care unit, inpatient setting or emergency room access for asthma in the previous 6 months prior to screening, which in the judgement of the Investigator may place the subjects at undue risk;
* Recent asthma exacerbation requiring systemic corticosteroids (SCSs), or emergency room admission or hospitalisation within 3 months prior to screening and/or during the run-in period ;
* Non-persistent asthma: exercise-induced, seasonal asthma (as the only asthma-related diagnosis) not requiring daily asthma control medicine;
* Asthma subjects currently treated with any of the following :

  1. High dose ICS;
  2. Long-acting muscarinic antagonist (LAMA);
  3. Systemic, depot or slow-release corticosteroids within 12 weeks prior to screening;
  4. Any other asthma treatments (e.g. cromolyn sodium, nedocromil sodium, leukotriene modifiers) within 4 weeks prior to screening;
  5. Any biologic therapy (e.g. omalizumab, mepolizumab, reslizumab, benralizumab, dupilumab, tezepelumab) within 6 months prior to screening;
* Respiratory disorders other than asthma
* Lung resection;
* Lower respiratory tract infection;
* Lung cancer and history of lung cancer;
* Subjects with active cancer or a history of cancer (other than lungs) ;
* Patients who have clinically significant cardiovascular condition;
* Run-in compliance: e-Diary completion \<75% and run-in treatment compliance \<75% at randomisation;

Where it's running

  • Hospital Británico de Buenos Aires_Site n. 032029
    Buenos Aires, Argentina
    Recruiting
  • Centro Medico de Enfermedades Respiratorias_Site n. 032002
    Buenos Aires, Argentina
    Recruiting
  • Centro Medico Respire_Site n. 032014
    Buenos Aires, Argentina
    Recruiting
  • Asociación de Fomento y Sala de Primeros Auxilios "Alberto Mignaburu"_Site n. 032018
    Buenos Aires, Argentina
    Recruiting
  • Centro de Investigaciones Médicas Mar del Plata_Site n. 032019
    Buenos Aires, Argentina
    Recruiting
  • Fundacion CIDEA_Site n. 032009
    Buenos Aires, Argentina
    Recruiting
Show 44 more locations
  • Centro Medico Arsema_Site n. 032003
    Buenos Aires, Argentina
    Recruiting
  • Centro de Investigaciones Metabólicas (CINME)_Site n. 032025
    Ciudad Autonoma de Buenos Aire, Argentina
    Recruiting
  • Centro de Medicina Respiratoria - Concepcion del Uruguay_Site n. 032015
    Ciudad Autonoma de Buenos Aire, Argentina
    Recruiting
  • CARE - Centro de Alergia y Enfermedades Respiratorias_Site n. 032028
    Ciudad Autonoma de Buenos Aire, Argentina
    Recruiting
  • Consultorio Medico Dra. Rivera_Site n. 032012
    Ciudad Autonoma de Buenos Aire, Argentina
    Recruiting
  • Fundación Respirar Salud_Site n. 032004
    Ciudad Autonoma de Buenos Aire, Argentina
    Recruiting
  • Instituto de Medicina Respiratoria (IMER) - Cordoba_Site n. 032023
    Córdoba, Argentina
    Recruiting
  • CePIR_Site n. 032021
    La Plata, Argentina
    Recruiting
  • Fundacion Scherbovsky_Site n. 032013
    Mendoza, Argentina
    Recruiting
  • Instituto Medico INSARES SA_Site n. 032005
    Mendoza, Argentina
    Recruiting
  • Cimro Consultorios Medicos - Centro de Investigacion_Site n. 032006
    Mendoza, Argentina
    Recruiting
  • Centro Respiratorio Quilmes_Site n. 032007
    Quilmes, Argentina
    Recruiting
  • Fundacion Innovaciencia_Site n. 032017
    Rosario, Argentina
    Recruiting
  • Instituto de Especialidades de la Salud Rosario_Site n. 032020
    Rosario, Argentina
    Recruiting
  • Instituto Medico de la Fundacion de Estudios Clínicos_Site n. 032001
    Rosario, Argentina
    Recruiting
  • Fundacion Grupo Colaborativo Rosario_Site n. 032010
    Rosario, Argentina
    Recruiting
  • Instituto De Enfermedades Respiratorias E Investigacion Medica (IERIM)_Site n. 032011
    San Juan Bautista, Argentina
    Recruiting
  • Centro Modelo de Cardiologia SRL_Site n. 032016
    San Miguel de Tucumán, Argentina
    Recruiting
  • Clinica Mayo de UMCB SRL_Site n. 032026
    San Miguel de Tucumán, Argentina
    Recruiting
  • Investigaciones en Patologias Respiratorias_Site n. 032022
    San Miguel de Tucumán, Argentina
    Recruiting
  • IBAMEDICA_Site n. 032008
    Santa Fe, Argentina
    Recruiting
  • University Clinical Centre of the Republic of Srpska - Paprikovac_Site n. 070004
    Banja Luka, Bosnia and Herzegovina
    Recruiting
  • Sveti apostol Luka Doboj_Site n. 070005
    Doboj, Bosnia and Herzegovina
    Recruiting
  • Dr. Abdulah Nakas General Hospital_Site n. 070007
    Sarajevo, Bosnia and Herzegovina
    Recruiting
  • Dr. Abdulah Nakas General Hospital_Site n. 070009
    Sarajevo, Bosnia and Herzegovina
    Recruiting
  • Organizational unit Novi Grad_Site n. 070003
    Sarajevo, Bosnia and Herzegovina
    Recruiting
  • University Clinical Hospital Mostar_Site n. 07001
    Siroki Brijeg, Bosnia and Herzegovina
    Recruiting
  • Opca Bolnica Tesanj_Site n. 070006
    Tešanj, Bosnia and Herzegovina
    Recruiting
  • Dr. Mustafa Sehovic Public Medical Center_Site n. 070008
    Tuzla, Bosnia and Herzegovina
    Recruiting
  • University Clinical Centre Tuzla_Site n. 070002
    Tuzla, Bosnia and Herzegovina
    Recruiting
  • MHAT Sv. Ivan Rilski - Gorna Oryahovitsa_Site n.100017
    Gorna Oryahovitsa, Bulgaria
    Recruiting
  • Medical Center Pulmo - 2018_Site n. 100007
    Haskovo, Bulgaria
    Recruiting
  • MC ZDRAVE 1 - Kozloduy_Site n. 100009
    Kozloduy, Bulgaria
    Recruiting
  • Medical Centre Pratia Clinic EOOD - Lovech_Site n. 100012
    Lovech, Bulgaria
    Recruiting
  • Specialized Hospital for Active Treatment of Pulmonary Diseases - Pernik EOOD_Site n. 100020
    Pernik, Bulgaria
    Recruiting
  • Multiprofile Hospital for Active Treatment "Heart and Brain" EAD_Site n. 100019
    Pleven, Bulgaria
    Recruiting
  • Medical Centre ''Unimed'' EOOD_Site n. 100003
    Plovdiv, Bulgaria
    Recruiting
  • MHAT "St. Ivan Rilski "- Razgrad_Site 100013
    Razgrad, Bulgaria
    Recruiting
  • Outpatient Practice for Specialized Medical Care in Allergology- Dr. Talyat Sali Cholak EOOD_Site 100002
    Razgrad, Bulgaria
    Recruiting
  • Re Spiro Medical Center_Site n. 100018
    Razgrad, Bulgaria
    Recruiting
  • Medical Center Hermes Ruse_Site n. 100011
    Rousse, Bulgaria
    Recruiting
  • SHATPPD "Dr. Dimitar Gramatikov" Ruse EOOD_Site n. 100004
    Rousse, Bulgaria
    Recruiting
  • Multiprofile Hospital for Active Treatment "Dr. Ivan Seliminski" - Sliven AD_Site n.100014
    Sliven, Bulgaria
    Recruiting
  • Medical Center Hera EOOD_Site n. 100006
    Sofia, Bulgaria
    Recruiting

+117 more sites. See ClinicalTrials.gov for the full list.

Study contacts

  • Principal investigator: Piotr KUNA, MD — Barlicki University Hospital Medical University of Lodz, Poland
  • Study coordinator: Chiesi Clinical Trial Info Chiesi Clinical Trials
  • Email: clinicaltrials_info@chiesi.com
  • Phone: +39 0521 2791

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.