Short-Term Anticoagulation versus Antiplatelet Therapy for Preventing Device Thrombosis Following Left Atrial Appendage Closure. The ANDES study.

2025-520954-12-00 Protocol 5072018 Therapeutic use (Phase IV) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 7 sites · Protocol 5072018

Overview

Sponsor-declared trial summary

Phase Therapeutic use (Phase IV)
Status Authorised, recruitment pending
Participants planned 500
Countries 1
Sites 7

Atrial Fibrillation Device thrombosis post-Left Atrial Appendage Closure

To compare the incidence of device thrombosis following LAAC between patients receiving short-term (8 weeks) anticoagulation therapy (DOAC) vs. antiplatelet therapy

Key facts

Sponsor
Centre Hospitalier Universite De Laval
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Cardiovascular Diseases [C14]
Decision date (initial)
2025-02-03
Transition trial
Yes
Low-intervention
Yes
Rare-disease indication
No
Vulnerable population
No

External identifiers

EU CT number
2025-520954-12-00
EudraCT number
2018-003621-28
WHO UTN
U0000-0000-0000
ClinicalTrials.gov
NCT03568890
ISRCTN
ISRCTN00000000

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Safety, Efficacy

To compare the incidence of device thrombosis following LAAC between patients receiving short-term (8 weeks) anticoagulation therapy (DOAC) vs. antiplatelet therapy

Conditions and MedDRA coding

Atrial Fibrillation Device thrombosis post-Left Atrial Appendage Closure

VersionLevelCodeTermSystem organ class
27.1 PT 10003658 Atrial fibrillation 100000004849

Study design 1 period

#TitleAllocationBlindingRoles blindedArms
1 ANDES
Short-Term Anticoagulation versus Antiplatelet Therapy for Preventing Device Thrombosis Following Left Atrial Appendage Closure
Randomised Controlled None DOAC therapy: DOAC therapy (any approved DOAC agent) for 60 days (for a maximum of 74 days) following LAAC
Antiplatelet therapy: Antiplatelet therapy (aspirin + clopidogrel) for 60 days (for a maximum of 74 days) following LAAC

Regulatory references

Scientific advice from competent authorities
Spanish Agency Of Medicines And Medical Devices
Plan to share IPD
No

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 2

  1. Patients undergoing successful LAAC with any approved device
  2. Age≥18 years old

Exclusion criteria 8

  1. Absolute contraindications for AC therapy
  2. Absolute contraindications for antiplatelet therapy
  3. End-stage renal disease (CrCl <15 ml/min)
  4. Recent percutaneous revascularization with drug-eluting stents necessitating dual antiplatelet therapy
  5. Prior intracranial hemorrhage
  6. Contraindications for TEE
  7. Severe pericardial effusion within the first 24 hrs following LAAC
  8. Major/life-threatening bleeding within the first 24 hrs following LAAC

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 2

  1. Primary Efficacy Endpoint: Device thrombosis as evaluated by TEE 60 days after LAAC and analyzed in a central echo core lab (as-treated analysis)
  2. Primary Safety Endpoint :Adverse clinical events including all-cause mortality, stroke, bleeding, or device thrombosis* within 60 days after LAAC (intention-to-treat analysis) * As clinically evaluated and diagnosed by the center investigators and determining a treatment change

Secondary endpoints 3

  1. Device thrombosis as evaluated by TEE or computed tomography 12 months after LAAC
  2. Ischemic events (stroke, TIA) at 2-months and 1-, 2-, 3-, 4-, 5-year follow-up
  3. Bleeding events at 2-months and 1-, 2-, 3-, 4-, 5-year follow-up

Investigational products

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

Test 6

Clopidogrel Viatris 75 mg film-coated tablets

PRD10095739 · Product

Active substance
Clopidogrel
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
75 mg milligram(s)
Max total dose
75 mg milligram(s)
Max treatment duration
8 Week(s)
Authorisation status
Authorised
ATC code
B01AC04 — CLOPIDOGREL
Marketing authorisation
EU/1/09/568/013
MA holder
VIATRIS LIMITED
MA country
Liechtenstein
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

ASPIRINE ARROW 75 mg, comprimé gastro-résistant

PRD10712012 · Product

Active substance
Acetylsalicylic Acid
Substance synonyms
ASPIRIN, ACETYLSALICYLIC ACID (ASA), ACIDUM ACETYLSALICYLICUM
Pharmaceutical form
GASTRO-RESISTANT TABLET
Route of administration
ORAL USE
Max daily dose
125 mg milligram(s)
Max total dose
125 mg milligram(s)
Max treatment duration
8 Week(s)
Authorisation status
Authorised
ATC code
B01AC06 — ACETYLSALICYLIC ACID
Marketing authorisation
66598317
MA holder
ARROW GENERIQUES
MA country
France
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Rivaroxaban Kéri 20 mg filmtabletta

PRD10009684 · Product

Active substance
Rivaroxaban
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
20 mg milligram(s)
Max total dose
20 mg milligram(s)
Max treatment duration
8 Week(s)
Authorisation status
Authorised
ATC code
B01AF01 — -
Marketing authorisation
OGYI-T-24130/28
MA holder
KÉRI PHARMA HUNGARY KFT
MA country
Hungary
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Apixaban Teva GmbH 5 mg filmdragerade tabletter

PRD10008715 · Product

Active substance
Apixaban
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
5 mg milligram(s)
Max total dose
5 mg milligram(s)
Max treatment duration
8 Week(s)
Authorisation status
Authorised
ATC code
B01AF02 — -
Marketing authorisation
63542
MA holder
TEVA GMBH
MA country
Sweden
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Dabigatran Etexilate GLN 150 mg hard capsules

PRD10078480 · Product

Active substance
Dabigatran Etexilate
Pharmaceutical form
CAPSULE, HARD
Route of administration
ORAL USE
Max daily dose
150 mg milligram(s)
Max total dose
150 mg milligram(s)
Max treatment duration
8 Week(s)
Authorisation status
Authorised
ATC code
B01AE07 — -
Marketing authorisation
MA255/05903
MA holder
GALENICUM HEALTH, S.L.
MA country
Malta
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Edoxaban TAD 60 mg apvalkotās tabletes

PRD11540880 · Product

Active substance
Edoxaban
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
60 mg milligram(s)
Max total dose
60 mg milligram(s)
Max treatment duration
8 Week(s)
Authorisation status
Authorised
ATC code
B01AF03 — -
Marketing authorisation
24-0230
MA holder
TAD PHARMA GMBH
MA country
Latvia
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Centre Hospitalier Universite De Laval

Sponsor organisation
Centre Hospitalier Universite De Laval
Address
Ste-Foy, 2705 Laurier Blvd Bureau 1839 2705 Laurier Blvd Bureau 1839
City
Quebec
Postcode
G1V 4G2
Country
Canada

Scientific contact point

Organisation
Centre Hospitalier Universite De Laval
Contact name
Josep Rodés Cabau

Public contact point

Organisation
Centre Hospitalier Universite De Laval
Contact name
Mélanie Côté

Locations

1 EU/EEA country · 7 investigational sites

By country

CountryMS statusPlanned subjectsSites
Spain Authorised, recruitment pending 250 7
Rest of world
Canada
250

Investigational sites

Spain

7 sites · Authorised, recruitment pending
Hospital Clinico San Carlos
Cardiology, Calle Del Profesor Martín Lagos S/n, 28040, Madrid
Area De Salud De Salamanca
Cardiology, Paseo De San Vicente 55-182, 37007, Salamanca
Hospital Alvaro Cunqueiro
Cardiology, Estrada Clara Campoamor No 341, 36312, Vigo
Hospital Clinic De Barcelona
Cardiology, Calle Villarroel 170, 08036, Barcelona
Hospital De La Santa Creu I Sant Pau
Cardiology, Calle De San Antonio Maria Claret 167, 08025, Barcelona
Bellvitge University Hospital
Cardiology, Carrer De La Feixa Llarga S/N, 08907, L'Hospitalet De Llobregat
Instituto Bernabeu Palma De Mallorca S.L.
Cardiology, Calle De Aragon 8, 07006, Palma

Results and documents

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

Documents 5 files

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

TypeTitleVersion
Protocol (for publication) ANDES PROTOCOL July 30 2023 3.0
Recruitment arrangements (for publication) Recruitment arrangements 1
Subject information and informed consent form (for publication) ANDES_ICF_english 1
Summary of Product Characteristics (SmPC) (for publication) Summary of product characteristics_ASA_Clopidogrel 1
Synopsis of the protocol (for publication) ANDES PROTOCOL Summary 3.0

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-01-31 Spain Acceptable with conditions
2025-02-03
2025-02-03