New asthma drug passes first safety hurdle in small trial
NCT ID NCT05366764
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This early-stage trial tested the safety and tolerability of a new drug called SAR443765 in 36 people, including healthy volunteers and those with mild-to-moderate asthma. Participants received either the drug or a placebo, and researchers monitored for side effects and how the drug moved through the body. The goal was to see if the drug is safe enough for further testing, not to measure its effectiveness against asthma.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- SAR443765 (an injectable drug)
- What this could lead to
- If successful, this could point toward a new treatment option for asthma that helps control symptoms.
- What could go wrong
- This is a very early Phase 1 trial with only 36 participants, focused on safety, not effectiveness. The drug may not work or could have side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
-
36 people
The number who actually took part.
- Started
-
Jun 2022
- Finished
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Feb 2023
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 60 years
- Sex
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Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Diagnosis of asthma for at least 12 months and confirmed at screening based on the Global Initiative for Asthma (GINA) 2020 Guidelines * Controlled asthma defined as no more than 1 canister of rescue inhaler per month over the last 3 months prior to baseline * Elevated FeNO level defined as ≥25 ppb * Participants, using as-needed SABA, ICS-naïve or with existing stable treatment (at least for 3 months prior to screening) with low to medium daily dose ICS (≤500 mcg of fluticasone propionate or comparable ICS daily dosage) potentially in combination with a LABA and/or LAMA as second controller, and/or with stable daily leukotriene receptor antagonist, leukotriene synthesis inhibitor and/or chromones * Prebronchodilator forced expiratory volume in 1 second (FEV1) ≥60% of predicted normal * Reversibility of at least 12% and 200 mL in FEV1 or forced vital capacity (FVC) after administration of 4 puffs (400 mcg) of albuterol/salbutamol or levalbuterol/levosalbutamol during screening or documented history of a reversibility test that meets this criteria within 5 years prior to screening or documented positive response to methacholine challenge (a decrease in FEV1 by 20% \[PC20\] of \<8 mg/mL) within 5 years prior to screening visit * Body weight between 50.0 and 105.0 kg, inclusive, if male, and between 40.0 and 95.0 kg, inclusive, if female, body mass index between 18.0 and 32.0 kg/m2 * Male participants are eligible to participate if they use condom during study period * A female participant is eligible to participate if she is not pregnant or breastfeeding, and one of the following conditions applies: Is a woman of non-childbearing potential (WONCBP) OR Is a woman of childbearing potential (WOCBP) and agrees to use a contraceptive method that is highly effective * A WOCBP must have a negative highly sensitive pregnancy test within 36 hours before the first administration of study intervention Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply: * Any clinically relevant abnormal findings in medical history, physical examination, vital signs, 12-lead ECG. * Chronic lung disease, or another diagnosed pulmonary or systemic disease associated with elevated peripheral eosinophil counts. * History of life-threatening asthma, asthma exacerbation or use of systemic steroid within 3 months prior to screening visit * Worsening of asthma or respiratory infection within the last 6 weeks prior screening visit. * Symptomatic postural hypotension,history or presence of drug or alcohol abuse, current smoker or previous smoker with a smoking history \>10 pack-years. * Excessive consumption of beverages containing xanthine bases (more than 4 cups or glasses per day). NOTE: Other Inclusion/Exclusion criteria may apply. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.
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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
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Investigational Site Number : 2760001
Berlin, Germany
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Investigational Site Number : 8260001
Belfast, BT9 6AD, United Kingdom
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