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A Study to Evaluate the Long-term Safety and Efficacy of Lunsekimig in Adult Participants With Chronic Obstructive Pulmonary Disease (COPD)

An Extension Study to Evaluate the Long-term Safety and Efficacy of Lunsekimig, Including Inhaled Corticosteroid Withdrawal, in Adults With Chronic Obstructive Pulmonary Disease (COPD) Who Completed Studies EFC18243 or EFC18244

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07793409
Acronym
COLOSSUS
Enrollment
1508
Registered
2026-08-28
Start date
2026-09-14
Completion date
2031-07-23
Last updated
2026-09-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Obstructive Pulmonary Disease

Brief summary

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: * Baseline Visit (Visit 1 / Week 0) will coincide with the End-of-Intervention visit from the parent study (EFC18243 or EFC18244) if possible * Treatment duration of up to 96 weeks * Safety follow-up period of approximately 4 weeks * The number of visits will be 26

Interventions

* Pharmaceutical form: Solution for injection in prefilled syringe * Route of administration: Subcutaneous injection

Sponsors

Sanofi
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
40 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Participants who completed the treatment period of EFC18243 or EFC18244 studies, including EOI visit * Contraception 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: * Is not a women of childbearing potential (WOCBP), OR * Is a WOCBP and agrees to follow the contraceptive guidance. The WOCBP should also agree not to donate or cryopreserve eggs (ova, oocytes) for the purpose of reproduction. * Male participants: No sperm donation or cryopreserving sperm ICS-withdrawal sub-study only: * Participants receiving triple controller therapy (LABA+LAMA+ICS) * Participants who were compliant with lunsekimig * ≤ 1 moderate exacerbation and no severe exacerbation of COPD during the parent study * No exacerbation during the run-in period

Exclusion criteria

The

Design outcomes

Primary

MeasureTime frameDescription
Exposure-adjusted incidence rate of treatment-emergent adverse events (TEAE), including adverse events of special interest (AESI ) and serious adverse events (SAE)Study baseline to Week 100Exposure-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.
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)From Week 12 to Week 36

Secondary

MeasureTime frameDescription
Annualized rate of moderate-to-severe COPD exacerbationsStudy baseline to Week 96
Change from parent study baseline in post-Bronchodilator Forced Expiratory Volume in 1 second (post-BD FEV1)Parent study baseline to Weeks 48 and 96
Change from parent study baseline in pre-BD FEV1Parent study baseline to Weeks 48 and 96
Change from parent study baseline in SGRQ-C total scoreParent study baseline to Weeks 48 and 96The 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.
ICS withdrawal sub-study: Time to first moderate or severe AECOPDFrom Week 12 to Week 96AECOPD: acute exacerbation of chronic obstructive pulmonary disease
ICS withdrawal sub-study: Change from Week 12 to Week 36 in SGRQ-C total scoreFrom Week 12 to Week 36The 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.

Contacts

CONTACTTrial Transparency email recommended (Toll free for US & Canada)
Contact-US@sanofi.com800-633-1610

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 5, 2026