A Phase 3 interventional study of Lunsekimig in Chronic Obstructive Pulmonary Disease, sponsored by Sanofi. Enrolling by invitation at 8 sites in 3 countries. Open to participants aged 40 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-10-21.
Sponsored by Sanofi · Phase 3, Interventional, and Treatment
This is an open-label, Phase 3, long-term safety extension study including participants of previous lunsekimig clinical trials with inadequately controlled chronic obstructive pulmonary disease (COPD ) characterized by an eosinophilic phenotype.
The purpose of the LTS 18211 study is to characterize the long-term safety and efficacy of lunsekimig in adults with COPD who completed studies EFC18243 or EFC18244 in the main study, and to assess the impact of inhaled corticosteroids (ICS ) withdrawal in the ICS withdrawal sub-study.
The study duration will be up to 100 weeks, including the following components:
5,520 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 856 are open to participants now.
This study's planned enrollment of 1,508 is above the median of 62 across 3,839 interventional studies indexed under Pulmonary Disease, Chronic Obstructive.
Browse Pulmonary Disease, Chronic Obstructive studies →Sanofi is the lead sponsor of 1,557 studies on the registry; 91 are open to participants now.
Of its 205 completed or terminated interventional studies of FDA-regulated products, 123 (60%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
for male and female participants during the study intervention period and during 8 weeks following the last administration of study intervention. And:
Female participants: not pregnant or breastfeeding, and one of the following conditions applies:
ICS-withdrawal sub-study only:
Exclusion Criteria:
The exclusion criteria are identical for LTS18211 and ICS withdrawal sub-study:
The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
COPD
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Excipients
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Subcutaneous (SC) administration of lunsekimig for up to 96 weeks, with the same inhaled controller medication as in the parent study (LABA + LAMA + ICS or LABA + LAMA)
Drug: Lunsekimig
ICS withdrawal sub-study: SC administration of lunsekimig for up to 96 weeks, with the inhaled controller medication LABA + LAMA + ICS in the run-in period followed by randomization to maintain the same inhaled regimen
Drug: Lunsekimig
ICS withdrawal sub-study: SC administration of lunsekimig for up to 96 weeks, with the inhaled controller medication LABA + LAMA + ICS in the run-in period followed by randomization to withdraw ICS
Drug: Lunsekimig
* Pharmaceutical form: Solution for injection in prefilled syringe * Route of administration: Subcutaneous injection
Also known as: SAR443765
Exposure-adjusted incidence rate of treatment-emergent adverse events (TEAE), including adverse events of special interest (AESI ) and serious adverse events (SAE)
Exposure-adjusted incidence rate is defined as the number of patients with at least one specific treatment emergent adverse event in question per 100 patients taking the treatment for 1 year.
Time frame: Study baseline to Week 100
ICS withdrawal sub-study: Change from Week 12 (end of run-in period) to Week 36 in pre-Bronchodilator Forced Expiratory Volume in 1 second (pre-BD FEV1)
Time frame: From Week 12 to Week 36
Annualized rate of moderate-to-severe COPD exacerbations
Time frame: Study baseline to Week 96
Change from parent study baseline in post-Bronchodilator Forced Expiratory Volume in 1 second (post-BD FEV1)
Time frame: Parent study baseline to Weeks 48 and 96
Change from parent study baseline in pre-BD FEV1
Time frame: Parent study baseline to Weeks 48 and 96
Change from parent study baseline in SGRQ-C total score
The St. George's Respiratory Questionnaire (SGRQ) is a patient reported outcome measure designed to measure and quantify health status in adult patients with chronic airflow limitation. The SGRQ-C is a shorter (40 items) version derived from the original version using COPD data only. A global score ranges from 0 to 100 with lower scores indicating better quality-of-life.
Time frame: Parent study baseline to Weeks 48 and 96
ICS withdrawal sub-study: Time to first moderate or severe AECOPD
AECOPD: acute exacerbation of chronic obstructive pulmonary disease
Time frame: From Week 12 to Week 96
ICS withdrawal sub-study: Change from Week 12 to Week 36 in SGRQ-C total score
The St. George's Respiratory Questionnaire (SGRQ) is a patient reported outcome measure designed to measure and quantify health status in adult patients with chronic airflow limitation. The SGRQ-C is a shorter (40 items) version derived from the original version using COPD data only. A global score ranges from 0 to 100 with lower scores indicating better quality-of-life.
Time frame: From Week 12 to Week 36
Plan to share: Yes — Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Studies of the drug tested here: Lunsekimig
Pulmonary Disease, Chronic Obstructive →