Long-term safety and efficacy evaluation of lunsekimig in adult participants with chronic rhinosinusitis with nasal polyps (CRSwNP) who completed a previous lunsekimig CRSwNP study

2024-515912-27-00 Protocol LTS18300 Therapeutic exploratory (Phase II) Ongoing, recruitment ended

Start 8 Dec 2025 · Status Ongoing, recruitment ended · 3 EU/EEA countries · 10 sites · Protocol LTS18300

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Ongoing, recruitment ended
Participants planned 74
Countries 3
Sites 10

Chronic rhinosinusitis with nasal polyps

To evaluate the long-term safety and tolerability of lunsekimig in adult participants with inadequately controlled CRSwNP

Key facts

Sponsor
Sanofi-Aventis Recherche & Developpement
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Respiratory Tract Diseases [C08]
Trial duration
8 Dec 2025 → ongoing
Decision date (initial)
2025-06-11
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes
Funding sources
Sanofi-Aventis Recherche & Developpement

External identifiers

EU CT number
2024-515912-27-00
WHO UTN
U1111-1308-9807
ClinicalTrials.gov
NCT06914908

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Pharmacokinetic, Efficacy, Safety, Others

To evaluate the long-term safety and tolerability of lunsekimig in adult participants with inadequately controlled CRSwNP

Secondary objectives 4

  1. To evaluate the long-term effect of lunsekimig on patient-reported outcomes
  2. To evaluate the long-term effect of lunsekimig on loss of smell
  3. To evaluate the pharmacokinetics (PK) of lunsekimig
  4. To evaluate the immunogenicity to lunsekimig

Conditions and MedDRA coding

Chronic rhinosinusitis with nasal polyps

VersionLevelCodeTermSystem organ class
27.0 PT 10080060 Chronic rhinosinusitis with nasal polyps 100000004855

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 3

  1. Participants who have completed the treatment period and the follow up period in CRSwNP lunsekimig parent study, including EOS visit, as per protocol
  2. Participants receiving therapy with intranasal mometasone furoate nasal spray (MFNS).
  3. Participants who are able and willing to participate in this extension study, and to comply with requested study visits and procedures.

Exclusion criteria 3

  1. Prior hypersensitivity reaction to lunsekimig or to any of the excipients used in the presentation or in preparation for administration of lunsekimig, or other allergy that, in the opinion of the Investigator, contraindicates participation in the study.
  2. Concurrent participation in any clinical study other than the parent study, including non-interventional studies.
  3. Participants who, during their participation in the parent study, developed an adverse event (AE) or a serious adverse event (SAE) deemed related to lunsekimig, which in the opinion of the Investigator could indicate that continued treatment with lunsekimig may present an unreasonable risk for the participant

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Incidence of participants with treatment-emergent adverse events (TEAEs) including adverse events of special interest (AESI), and serious adverse events (SAEs)

Secondary endpoints 5

  1. Change in SNOT-22 total score
  2. Change in rhinosinusitis visual analog scale (VAS)
  3. Change in University of Pennsylvania Smell Identification Test (UPSIT) score
  4. Serum lunsekimig concentrations
  5. Anti-drug antibodies (ADA) against lunsekimig

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

SAR443765 / Lunsekimig

PRD10508837 · Product

Active substance
Lunsekimig
Substance synonyms
SAR443765, Pentavalent nanobody consisting of two nanobody building blocks targeting TSLP, two nanobody building blocks targeting IL-13 and one nanobody building block targeting human albumin
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INJECTION
Max daily dose
00.00 mg milligram(s)
Max total dose
00.00 mg milligram(s)
Max treatment duration
52 Week(s)
Authorisation status
Not Authorised
MA holder
SANOFI AVENTIS RECHERCHE ET DEVELOPPEMENT (SAR)
Paediatric formulation
No
Orphan designation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Sanofi-Aventis Recherche & Developpement

Sponsor organisation
Sanofi-Aventis Recherche & Developpement
Address
82 Avenue Raspail
City
Gentilly
Postcode
94250
Country
France

Scientific contact point

Organisation
Sanofi-Aventis Recherche & Developpement
Contact name
Clinical Sciences and Operations

Public contact point

Organisation
Sanofi-Aventis Recherche & Developpement
Contact name
Clinical Sciences and Operations

Third parties 10

OrganisationCity, countryDuties
Centrala Farmaceutyczna Cefarm S.A.
ORG-100019105
Radomsko, Poland Code 14
Eresearchtechnology Inc.
ORG-100013039
Philadelphia, United States E-data capture
ESMS Global Limited
ORG-100023149
London, United Kingdom Other
Comac Medical Ltd.
ORG-100026829
Sofia, Bulgaria Code 12, Code 14, Code 5
Charles River Laboratories Montreal ULC
ORG-100041009
Laval, Canada Laboratory analysis
Suvoda LLC
ORG-100043523
Conshohocken, United States Interactive response technologies (IRT)
eResearchTechnology GmbH
ORG-100044103
Estenfeld, Germany E-data capture
Pharmaceutical Product Development LLC
ORG-100016999
Highland Heights, United States Laboratory analysis
Farmovs (Pty) Ltd
ORG-100044583
Bloemfontein, South Africa Laboratory analysis
Medidata Solutions Inc.
ORG-100016256
New York, United States E-data capture

Locations

3 EU/EEA countries · 10 investigational sites

By country

CountryMS statusPlanned subjectsSites
Belgium Ongoing, recruitment ended 4 2
Bulgaria Ongoing, recruitment ended 10 2
Poland Ongoing, recruitment ended 26 6
Rest of world
United States, United Kingdom, Argentina
34

Investigational sites

Belgium

2 sites · Ongoing, recruitment ended
UZ Leuven
Otorhinolaryngology, Herestraat 49, 3000, Leuven
Universitair Ziekenhuis Gent
Otorhinolaryngology, Corneel Heymanslaan 10, 9000, Gent

Bulgaria

2 sites · Ongoing, recruitment ended
Medical Center Comac Medical Ltd.
NAP, Ulitsa Sveti Georgi Sofiyski 3, 1606, Sofia
Medical Center Comac Medical Ltd.
NAP, Ulitsa Urvich 13, Krasno Selo District, Sofia

Poland

6 sites · Ongoing, recruitment ended
Centrum Medyczne All-Med Badania Kliniczne
Centrum Medyczne All-Med, ul. Henryka Sienkiewicza 23, 30-03, Ul. Henryka Sienkiewicza 23, 30-033, Cracow
Specjalistyczny Niepubliczny Zaklad Opieki Zdrowotnej Alergologia Plus Osrodek Diagnostyki I Terapii Uczulen
Specjalistyczny Niepubliczny Zaklad Opieki Zdrowotnej Alergologia Plus Osrodek Diagnostyki I Terapii, Ul. Tomasza Drobnika 49, 60-693, Poznan
Wojskowy Instytut Medyczny Panstwowy Instytut Badawczy
Klinika Otolaryngologii i Onkologii Laryngologicznej z Klinicznym Oddziałem Chirurgii Czaszkowo-Szcz, Ul. Szaserow 128, 04-141, Warsaw
Provita Sp. z o.o.
Centrum Medyczne Angelius Provita, Ul. Fabryczna 15b, 40-611, Katowice
Pracownia Badan Klinicznych Salus
Pracownia Badan Klinicznych Salus, ul. Jerzego Kukuczki 5/3, 50-570, Wrocław
Panstwowy Instytut Medyczny Ministerstwa Spraw Wewnetrznych I Administracji
Klinika Otorynolaryngologii, Ul. Woloska 137, 02-507, Warsaw

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Belgium 2026-01-19 2026-01-19 2026-04-23
Bulgaria 2025-12-09 2025-12-09 2026-04-23
Poland 2025-12-08 2025-12-08 2026-04-23

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 38 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) d1-rdct-protocol-en-2024-515912-27 0
Protocol (for publication) d4-patient-facing-material-RVAS-bg-2024-515912-27 1
Protocol (for publication) d4-patient-facing-material-RVAS-en-2024-515912-27 1
Protocol (for publication) d4-patient-facing-material-RVAS-fr-BE-2024-515912-27 1
Protocol (for publication) d4-patient-facing-material-RVAS-nl-2024-515912-27 1
Protocol (for publication) d4-patient-facing-material-RVAS-pl-2024-515912-27 1
Protocol (for publication) d4-rdct-patient-facing-material-copyrighted-en-2024-515912-27 1
Recruitment arrangements (for publication) K1-recruitment-arrangements-bg 1
Recruitment arrangements (for publication) K1-recruitment-arrangements-en 1.0
Recruitment arrangements (for publication) K1-recruitment-arrangements-pl 1.1
Recruitment arrangements (for publication) K2-recruitment-material-rollover-into-LTS18300-en 2
Recruitment arrangements (for publication) K2-recruitment-material-rollover-into-LTS18300-fr 2
Recruitment arrangements (for publication) K2-recruitment-material-rollover-into-LTS18300-nl 2
Recruitment arrangements (for publication) K2-recruitment-material-rollover-into-LTS18300-pl 2
Subject information and informed consent form (for publication) K2-recruitment material-brochure-bg 1
Subject information and informed consent form (for publication) K2-recruitment material-brochure-en 1
Subject information and informed consent form (for publication) K2-recruitment material-visit preparation-and-reminder card-bg_Redacted 1
Subject information and informed consent form (for publication) K2-recruitment material-visit preparation-and-reminder card-en_Redacted 1
Subject information and informed consent form (for publication) K2-redacted-recruitment material-patient welcome letter-bg_Redacted 1
Subject information and informed consent form (for publication) K2-redacted-recruitment material-patient welcome letter-en_Redacted 1
Subject information and informed consent form (for publication) L1_ICF Main country-version for BG_BG_Redacted 3.0
Subject information and informed consent form (for publication) L1-ICF Main country-version for bg-en-redacted 3.0
Subject information and informed consent form (for publication) L1-ICF PP country-version for bg-bg-redacted 1
Subject information and informed consent form (for publication) L1-ICF PP country-version for bg-en-redacted 1
Subject information and informed consent form (for publication) L1-redacted-sis-icf-main-en 3
Subject information and informed consent form (for publication) L1-redacted-sis-icf-main-fr 3
Subject information and informed consent form (for publication) L1-redacted-sis-icf-main-nl 3
Subject information and informed consent form (for publication) L1-redacted-sis-icf-partner-pregnancy-en 1.1
Subject information and informed consent form (for publication) L1-redacted-sis-icf-partner-pregnancy-fr 1.1
Subject information and informed consent form (for publication) L1-redacted-sis-icf-partner-pregnancy-nl 1.1
Subject information and informed consent form (for publication) L1-redacted-sis-icf-partner-pregnancy-pl 1.0
Subject information and informed consent form (for publication) L1-redacted-sis-icf-patient-pl 3
Synopsis of the protocol (for publication) d1-lay-protocol-synopsis-bg-2024-515912-27 1
Synopsis of the protocol (for publication) d1-lay-protocol-synopsis-de-BE-2024-515912-27 1
Synopsis of the protocol (for publication) d1-lay-protocol-synopsis-en-2024-515912-27 1
Synopsis of the protocol (for publication) d1-lay-protocol-synopsis-fr-BE-2024-515912-27 1
Synopsis of the protocol (for publication) d1-lay-protocol-synopsis-nl-BE-2024-515912-27 1
Synopsis of the protocol (for publication) d1-lay-protocol-synopsis-pl-2024-515912-27 1

Application history

5 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-02-17 Poland Acceptable
2025-06-09
2025-06-11
2 NON SUBSTANTIAL MODIFICATION NSM-1 2026-03-03 Poland Acceptable
2025-06-09
2026-03-03
3 SUBSTANTIAL MODIFICATION SM-1 2026-03-11 Acceptable 2026-04-17
4 SUBSTANTIAL MODIFICATION SM-2 2026-03-13 Poland Acceptable 2026-04-29
5 SUBSTANTIAL MODIFICATION SM-3 2026-03-26 Acceptable 2026-05-28