A Study of Eloralintide (LY3841136) in Participants With Obesity, or Overweight Without Type 2 Diabetes ( ENLIGHTEN-1).

2025-523657-34-00 Protocol J3R-MC-YDAG Therapeutic confirmatory (Phase III) Ongoing, recruiting

Start 13 Apr 2026 · Status Ongoing, recruiting · 3 EU/EEA countries · 25 sites · Protocol J3R-MC-YDAG

Overview

Sponsor-declared trial summary

Phase Therapeutic confirmatory (Phase III)
Status Ongoing, recruiting
Participants planned 254
Countries 3
Sites 25

Obesity

To demonstrate that eloralintide is superior to placebo for change in body weight.

Key facts

Sponsor
Eli Lilly & Co.
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Nutritional and Metabolic Diseases [C18]
Trial duration
13 Apr 2026 → ongoing
Decision date (initial)
2026-03-31
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

External identifiers

EU CT number
2025-523657-34-00
WHO UTN
U1111-1331-0530

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Pharmacokinetic, Diagnosis, Efficacy, Therapy, Pharmacodynamic, Safety

To demonstrate that eloralintide is superior to placebo for change in body weight.

Conditions and MedDRA coding

Obesity

Regulatory references

Scientific advice from competent authorities
European Medicines Agency
Plan to share IPD
Yes

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 4

  1. Have obesity or overweight
  2. If overweight, must also have one of the following: high blood pressure, high cholesterol, obstructive sleep apnea or heart disease
  3. Have a stable body weight (<5% body weight change) for 90 days prior to screening
  4. Have at least one self-report of an unsuccessful dietary effort to lose weight

Exclusion criteria 4

  1. Have type 1 diabetes or type 2 diabetes
  2. Have had or are planning to have surgery, an endoscopic procedure, and/or device-based therapy for weight loss (with exceptions)
  3. Have had a serious heart condition within 90 days prior to screening
  4. Have taken medications or alternative remedies for weight loss within 90 days of screening

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Percent Change from Baseline in Body Weight [Time Frame: Baseline, Week 64

Investigational products

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

Test 4

Eloralintide

PRD13082123 · Product

Active substance
LY3841136 Sodium
Pharmaceutical form
SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE
Route of administration
SUBCUTANEOUS USE
Max daily dose
0 Other
Max total dose
0 Other
Max treatment duration
1 Day(s)
Authorisation status
Not Authorised
MA holder
ELI LILLY AND COMPANY LIMITED
Paediatric formulation
No
Orphan designation
No

Eloralintide

PRD13082122 · Product

Active substance
LY3841136 Sodium
Pharmaceutical form
SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE
Route of administration
SUBCUTANEOUS USE
Max daily dose
0 Other
Max total dose
0 Other
Max treatment duration
1 Day(s)
Authorisation status
Not Authorised
MA holder
ELI LILLY AND COMPANY LIMITED
Paediatric formulation
No
Orphan designation
No

Eloralintide

PRD13082120 · Product

Active substance
LY3841136 Sodium
Pharmaceutical form
SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE
Route of administration
SUBCUTANEOUS USE
Max daily dose
0 Other
Max total dose
0 Other
Max treatment duration
1 Day(s)
Authorisation status
Not Authorised
MA holder
ELI LILLY AND COMPANY LIMITED
Paediatric formulation
No
Orphan designation
No

Eloralintide

PRD13082121 · Product

Active substance
LY3841136 Sodium
Pharmaceutical form
SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE
Route of administration
SUBCUTANEOUS USE
Max daily dose
0 Other
Max total dose
0 Other
Max treatment duration
1 Day(s)
Authorisation status
Not Authorised
MA holder
ELI LILLY AND COMPANY LIMITED
Paediatric formulation
No
Orphan designation
No

Placebo 1

Placebo to match LY

N/A · Product

Other product name
N/A
Pharmaceutical form
N/A
ATC code
N/A — N/A
Marketing authorisation
N/A
MA holder
N/A
MA country
Iceland
Paediatric formulation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Eli Lilly & Co.

Sponsor organisation
Eli Lilly & Co.
Address
1 Lilly Corporate Center
City
Indianapolis
Postcode
46285-0001
Country
United States

Scientific contact point

Organisation
Eli Lilly & Co.
Contact name
Lilly Clinical Trials information desk

Public contact point

Organisation
Eli Lilly & Co.
Contact name
Lilly Clinical Trials information desk

Third parties 8

OrganisationCity, countryDuties
Labcorp Central Laboratory Services SARL
ORG-100011524
Meyrin, Switzerland Other
RWS Life Sciences Inc.
ORG-100042348
East Hartford, United States Data management
IQVIA Limited
ORG-100008655
Reading, United Kingdom On site monitoring
Trialbee AB
ORG-100051369
Malmo, Sweden Other
Care Access Research LLC
ORL-000015894
Boston, MA, United States Other
Iqvia Inc.
ORG-100010622
Durham, United States Other
RWS Life Sciences Inc.
ORG-100042348
East Hartford, United States Data management
Veeva Systems Inc.
ORG-100006053
Pleasanton, United States Data management

Locations

3 EU/EEA countries · 25 investigational sites

By country

CountryMS statusPlanned subjectsSites
Belgium Ongoing, recruiting 99 3
Germany Ongoing, recruiting 62 13
Poland Ongoing, recruiting 93 9
Rest of world 0

Investigational sites

Belgium

3 sites · Ongoing, recruiting
Anima
ANIMA Research Loc. 1, Alkerstraat 28, 3570, Alken
Kormont
Vercruysse, Kwaremontplein 45, 9690, Kluisbergen
Jessa Ziekenhuis
Cardiology Loc. 1, Stadsomvaart 11, 3500, Hasselt

Germany

13 sites · Ongoing, recruiting
Diabetes-Zentrum-Wilhelmsburg GbR
N/A, Krieterstrasse 30, Wilhelmsburg, Hamburg
InnoDiab Forschung GmbH
N/A, Eleonorastrasse 42, Ruettenscheid, Essen
Praxis Sauter & Vorbach
N/A, Herrenstrasse 22 - 24, 88239, Wangen im Allgäu
Ambenet GmbH Das Ambulante Behandlungsnetz
N/A, Wilhelm-Leuschner-Platz 12, Zentrum-Süd, Leipzig
Universitaetsklinikum Carl Gustav Carus, Technischen Universitaet Dresden
Universitätsstudienzentrum für Stoffwechselerkrankungen, 43 Blasewitzer Straße, EG, Dresden
Medizentrum Essen Borbeck
N/A, Huelsmannstrasse 6, Borbeck, Essen
CRS Clinical Research Services Management GmbH
N/A, Grenadierstrasse 1, Neckarstadt, Mannheim
Diabetologische Schwerpunktpraxis Dr. Staudenmeyer & Dr. Schiwietz
N/A, Am Wall Süd 20, 49808, Lingen
BAG Drs. Med. Quist PartG
N/A, Haifa-Allee 20, 1st Floor Clinical trial center, Mainz
Diabeteszentrum Hamburg West
N/A, Beselerstrasse 2a, 22607, Hamburg
Zentrum fur klinische Forschung - Köln
N/A, Berliner Strasse 895, 1. OG, Köln
R.E.D. Institut fuer medizinische Studien und Fortbildung GmbH
N/A, Markt 15, 23758, Oldenburg In Holstein
MVZ Hausaerzte Grossenbaum GmbH
N/A, Grossenbaumer Allee 113, Grossenbaum, Duisburg

Poland

9 sites · Ongoing, recruiting
Ekamed Sp. z o.o.
NA, Aleja Krasnicka 2j/u1, 20-718, Lublin
Centrum Zdrowia Metabolicznego Pawel Bogdanski
NA, ul. Nowina 14F, 60-589, Poznan
Nzoz Zdrowie Osteo-Medic
NA, ul. Wiejska 81, 15-351, Bialystok
Terpa Sp. z o.o. sp.k.
NA, Ul. Pogodna 34, 20-333, Lublin
Pracownia Badan Klinicznych SALUS
NA, ul. Ołtaszyńska 92c/3, 53-034, Wrocław
Medyczne Centrum Diabetologiczno-Endokrynologiczno-Metaboliczne Diab-Endo-Met Sp. z o.o.
NA, Ul. Rusznikarska 17, 31-261, Cracow
Legeartis Poradnie Specjalistyczne Sp. z o.o.
NA, Ul. Mlynowa 17, 15-404, Bialystok
Samodzielny Publiczny Szpital Kliniczny Nr 1 Im.Prof.Stanislawa Szyszko Slaskiego Uniwersytetu Medycznego W Katowicach
NA, Ul. 3 Maja 13/15, 41-800, Zabrze
Centrum Terapii Wspolczesnej J.M. Jasnorzewska S.K.A.
NA, Ul. Przedzalniana 66, 90-338, Lodz

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 2026-04-13 2026-04-21
Germany 2026-04-13 2026-04-14
Poland 2026-04-13 2026-04-13

Results and documents

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

Documents 100 files

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

TypeTitleVersion
Protocol (for publication) D1_Protocol 2025-523657-34-00 redacted a
Protocol (for publication) D1_Protocol addendum EU 2025-523657-34-00_Redacted 5
Protocol (for publication) D4_Patient Facing Document_Patient Documents Copyright 1
Recruitment arrangements (for publication) K1_Recruitment and Informed Consent Procedure 1.1
Recruitment arrangements (for publication) K1_Recruitment Arrangements 1
Recruitment arrangements (for publication) K1_Recruitment Arrangements_PL 1.0
Recruitment arrangements (for publication) K2_recruitment and retention_EP_Understanding-Randomization 1
Recruitment arrangements (for publication) K2_recruitment and retention_EP_What-Are-Clinical Trials 1
Recruitment arrangements (for publication) K2_recruitment and retention_EP_What-Is-A-Placebo 1
Recruitment arrangements (for publication) K2_Recruitment material_Brochure_BEDU_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Brochure_BEFR_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Brochure_English_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Brochure_Redacted 1
Recruitment arrangements (for publication) K2_Recruitment material_Clinical-Trial-Phases 1
Recruitment arrangements (for publication) K2_Recruitment Material_Flyer 1
Recruitment arrangements (for publication) K2_Recruitment material_Flyer_BEDU 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Flyer_BEFR 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Flyer_English 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Investigator Forst_CRS 1
Recruitment arrangements (for publication) K2_Recruitment Material_Landing Page_Investigator Forst_CRS 1
Recruitment arrangements (for publication) K2_Recruitment material_Letter_Doctor Referral_BEDU 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Letter_Doctor Referral_BEFR 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Letter_Doctor Referral_English 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Letter_Doctor to Patient_BEDU_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Letter_Doctor to Patient_BEFR_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Letter_Doctor to Patient_English_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Poster 1
Recruitment arrangements (for publication) K2_Recruitment material_Poster_BEDU 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Poster_BEFR 1.0
Recruitment arrangements (for publication) K2_Recruitment material_Poster_English 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Digital Marketing Content_PL 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Global Privacy Policy 1
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Global Privacy Policy_PL 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Landing Page_PL_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Landing Page_Redacted 1
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Marketing Content 1
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_OverviewSupplementaryInformation_PL 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Secondary Assessment_PL_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Secondary Assessment_Redacted 1
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Self Assessment_Redacted 1
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Self_Assessment_PL_Redacted 1.0
Recruitment arrangements (for publication) K2_Recruitment Material_Trialbee_Supplementary Information 1
Subject information and informed consent form (for publication) L1_ICF_Sponsor_Statement_Redacted 1.0
Subject information and informed consent form (for publication) L1_SIF and ICF_Main ICF_Redacted 1.2
Subject information and informed consent form (for publication) L1_SIS and ICF_Main ICF_Redacted_BEDU 1.1
Subject information and informed consent form (for publication) L1_SIS and ICF_Main ICF_Redacted_BEFR 1.1
Subject information and informed consent form (for publication) L1_SIS and ICF_Main ICF_Redacted_English 1.1
Subject information and informed consent form (for publication) L1_SIS and ICF_PL_Main ICF_YDAG_Redacted 2.1
Subject information and informed consent form (for publication) L1_SIS and ICF_Pregnant partner ICF 1
Subject information and informed consent form (for publication) L2_Other subject information material_Brochure_Master_PL_Redacted 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Compensation Information Sheet_BEDU_Redacted 1.1
Subject information and informed consent form (for publication) L2_Other subject information material_Compensation Information Sheet_BEFR_Redacted 1.1
Subject information and informed consent form (for publication) L2_Other subject information material_Compensation Information Sheet_English_Redacted 1.1
Subject information and informed consent form (for publication) L2_Other subject information material_CT_HbA1c-Brochure-OUS_Master_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Landing page_BEDU_Redacted 1.1
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Landing page_BEFR_Redacted 1.1
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Landing page_English_Redacted 1.1
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Participant Facing Screenshots_BEDU_Redacted 1.4
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Participant Facing Screenshots_BEFR_Redacted 1.4
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Participant Facing Screenshots_English_Redacted 1.4
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Privacy Policy_BEDU 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Privacy Policy_BEFR 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Privacy Policy_English 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Security and Privacy_BEDU_Redacted 1.5
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Security and Privacy_BEFR_Redacted 1.5
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Security and Privacy_Eng_Redacted 1.5
Subject information and informed consent form (for publication) L2_Other subject information material_eConsent_Submission Letter 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_EP_Clinical-Trial-Phases_Master_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_EP_Understanding-Randomization_Master_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_EP_What-Are-Clinical Trials_Master_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Flyer_Master_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_IFU_BEDU_Redacted 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_IFU_BEFR_Redacted 2.0
Subject information and informed consent form (for publication) L2_Other subject information material_IFU_English_Redacted 2.0
Subject information and informed consent form (for publication) L2_Other subject information material_Letter-Doctor-to-Patient_Master_PL_Redacted 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Polish_ZoomHealth_PrivacyStatement_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Polish_ZoomHealth_Screenshots_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Polish_ZoomHealth_TermsofService_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Poster_Master_PL 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_Zoom_Privacy Statement_English 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Privacy Statement_BEDU 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Privacy Statement_BEFR 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Screenshots_BEDU 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Screenshots_BEFR 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Screenshots_English 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Terms Of Service_BEDU 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Terms Of Service_BEFR 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_ZoomHealth_Terms Of Service_English 1.0
Subject information and informed consent form (for publication) L3_Info Re insurance Conditions for Patient_PL 1.0
Subject information and informed consent form (for publication) L3_ZoomHealth Screenshots 1
Subject information and informed consent form (for publication) L3_ZoomHealth_PrivacyStatement 1
Subject information and informed consent form (for publication) L3_ZoomHealth_RegulatorySubmission_CoverLetter 1
Subject information and informed consent form (for publication) L3_ZoomHealth_TermsofService 1
Subject information and informed consent form (for publication) L4_Informed consent and patient recruitment procedure_PL 2.0
Synopsis of the protocol (for publication) D1_Protocol synopsis BE_2025-523657-34-00_BEDE_Redacted 1.0
Synopsis of the protocol (for publication) D1_Protocol synopsis BE_2025-523657-34-00_BEDU_Redacted 1.0
Synopsis of the protocol (for publication) D1_Protocol synopsis BE_2025-523657-34-00_BEFR_Redacted 1.0
Synopsis of the protocol (for publication) D1_Protocol synopsis BE_2025-523657-34-00_English_Redacted 1.0
Synopsis of the protocol (for publication) D1_Protocol Synopsis_2025-523657-34-00_Redacted 1
Synopsis of the protocol (for publication) D1_Protocol synopsis_PL_Redacted 1.0

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-11-24 Germany Acceptable
2026-03-26
2026-03-27