A Pragmatic Randomized Trial to Evaluate the Effectiveness of High-Dose Quadrivalent Influenza Vaccine vs. Standard-Dose Quadrivalent Influenza Vaccine in Older Adults

2022-500657-17-00 Protocol DANFLU-2 Therapeutic use (Phase IV) Ended

Start 10 Sep 2022 · End 31 Aug 2025 · Status Ended · 1 EU/EEA countries · 2 sites · Protocol DANFLU-2

Overview

Sponsor-declared trial summary

Phase Therapeutic use (Phase IV)
Status Ended
Participants planned 339,700
Countries 1
Sites 2

Prevention of influenza infection in older adults

The primary objective of the study is to evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of hospitalization for influenza or pneumonia [composite endpoint] in older adults.

Key facts

Sponsor
Gentofte Hospital, Sanofi Pasteur
Participant type
Healthy volunteers, Patients
Age range
65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Virus Diseases [C02]
Trial duration
10 Sep 2022 → 31 Aug 2025
Decision date (initial)
2022-06-28
Transition trial
No
Low-intervention
Yes
Rare-disease indication
No
Vulnerable population
No
Funding sources
Sanofi

External identifiers

EU CT number
2022-500657-17-00
ClinicalTrials.gov
NCT05517174

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Safety, Efficacy, Prophylaxis

The primary objective of the study is to evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of hospitalization for influenza or pneumonia [composite endpoint] in older adults.

Secondary objectives 5

  1. To evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of hospitalization for any cardio-respiratory disease [composite endpoint] in older adults.
  2. To evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of all-cause hospitalization in older adults.
  3. To evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of all-cause mortality in older adults.
  4. To evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of hospitalization for influenza in older adults.
  5. To evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of hospitalization for pneumonia in older adults.

Conditions and MedDRA coding

Prevention of influenza infection in older adults

VersionLevelCodeTermSystem organ class
20.0 PT 10022000 Influenza 100000004862

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 1

  1. 1) Age 65 years and above (this inclusion criterion will be modified according to the Danish government’s official recommendations for the 2022/2023 and 2023/2024 influenza seasons – i.e. if the Danish government decides to offer QIV-HD to persons aged 80 and above, the trial will only recruit persons aged 65-79 years. If the Danish government does not offer QIV-HD to anyone, the trial will continue to recruit persons aged 65 and above with no upper limit to participation)

Exclusion criteria 1

  1. There are no specific exclusion criteria for this study.

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Hospitalization due to influenza or pneumonia [composite endpoint]

Secondary endpoints 1

  1. 1) Hospitalization for any cardio-respiratory disease [composite endpoint], 2) All-cause hospitalization, 3) All-cause mortality, 4) Hospitalization for influenza, 5) Hospitalization for pneumonia

Investigational products

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

Test 1

Efluelda, injektionsvæske, suspension i fyldt injektionssprøjte

PRD8034148 · Product

Active substance
BPHUKET30732013-LIKE Virus (BPHUKET30732013, Wild Type)
Pharmaceutical form
SUSPENSION FOR INJECTION
Route of administration
INTRAMUSCULAR INJECTION
Max daily dose
240 µg microgram(s)
Max total dose
240 µg microgram(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
J07BB02 — INFLUENZA, PURIFIED ANTIGEN
Marketing authorisation
62663
MA holder
SANOFI PASTEUR
MA country
Denmark
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Comparator 2

Vaxigriptetra, injektionsvæske, suspension i fyldt injektionssprøjte

PRD4465707 · Product

Active substance
BPHUKET30732013-LIKE Virus (BPHUKET30732013, Wild Type)
Pharmaceutical form
SUSPENSION FOR INJECTION
Route of administration
INTRAMUSCULAR
Max daily dose
60 µg microgram(s)
Max total dose
60 µg microgram(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
J07BB02 — INFLUENZA, PURIFIED ANTIGEN
Marketing authorisation
56583
MA holder
SANOFI PASTEUR EUROPE
MA country
Denmark
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Influvactetra, injektionsvæske, suspension i fyldt injektionssprøjte

PRD7189235 · Product

Active substance
BPHUKET30732013-LIKE Virus (BPHUKET30732013, Wild Type)
Substance synonyms
B/PHUKET/3073/2013-LIKE STRAIN (B/PHUKET/3073/2013, WILD TYPE), B/Phuket/3073/2013-like strain (B/Yamagata/16/88 lineage) (B/Phuket/3073/2013, wild type)
Pharmaceutical form
SUSPENSION FOR INJECTION
Route of administration
INTRAMUSCULAR
Max daily dose
60 µg microgram(s)
Max total dose
60 µg microgram(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
J07BB02 — INFLUENZA, PURIFIED ANTIGEN
Marketing authorisation
61929
MA holder
VIATRIS APS
MA country
Denmark
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Auxiliary 1

Elasomeran

SCP107973396 · ATC

Active substance
Elasomeran
Substance synonyms
mRNA-1273, CX-024414 (single-stranded, 5’-capped messenger RNA (mRNA) produced using a cell-free in vitro transcription from the corresponding DNA templates, encoding the viral spike (S) protein of SARS-CoV-2), CX-024414, COVID-19 mRNA vaccine Moderna (CX-024414)
Route of administration
INTRAMUSCULAR INJECTION
Max daily dose
50 µg microgram(s)
Max total dose
50 µg microgram(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
J07BN01 — COVID-19, RNA-BASED VACCINE
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Gentofte Hospital

Sponsor organisation
Gentofte Hospital
Address
Kildegaardsvej 28
City
Hellerup
Postcode
2900
Country
Denmark

Scientific contact point

Organisation
Gentofte Hospital
Contact name
Niklas Dyrby Johansen

Public contact point

Organisation
Gentofte Hospital
Contact name
Niklas Dyrby Johansen

Third parties 1

OrganisationCity, countryDuties
Frederiksberg Hospital
ORG-100028217
Frederiksberg, Denmark On site monitoring

Sanofi Pasteur

Sponsor organisation
Sanofi Pasteur
Address
14 Espace Henry Vallee
City
Lyon
Postcode
69007
Country
France

Sponsor responsibilities

Article 77 compliance
Gentofte Hospital
Contact point sponsor
Gentofte Hospital
Article 77 implementation
Gentofte Hospital

Locations

1 EU/EEA country · 2 investigational sites

By country

CountryMS statusPlanned subjectsSites
Denmark Ended 339,700 2
Rest of world 0

Investigational sites

Denmark

2 sites · Ended
Gentofte Hospital
Cardiovascular Non-Invasive Imaging Research Laboratory, Department of Cardiology, Kildegaardsvej 28, 2900, Hellerup
Danske Laegers Vaccinations Service
N/A, Gladsaxevej 376, 1., Soeborg

Country notifications

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

Country Trial startTrial end Recruitment startRecruitment end Early termination
Denmark 2022-09-10 2025-08-31 2022-09-22 2024-10-25

Results and documents

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

Documents 22 files

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

TypeTitleVersion
Protocol (for publication) DANFLU-2 protocol 4.7
Protocol (for publication) DANFLU-2 protocol tracked changes 4.7
Recruitment arrangements (for publication) Consent and recruitment procedure 3.0
Recruitment arrangements (for publication) Invitation letter 3.2
Recruitment arrangements (for publication) Video transcript 4.7
Recruitment arrangements (for publication) Video transcript tracked changes 4.7
Recruitment arrangements (for publication) Website advertisement 4.6
Recruitment arrangements (for publication) Website advertisement tracked changes 4.6
Subject information and informed consent form (for publication) Consent form 1
Subject information and informed consent form (for publication) EQ-5D-5L Danish 1
Subject information and informed consent form (for publication) HomeSwab-PRO consent form 1
Subject information and informed consent form (for publication) HomeSwab-PRO information sheet 1
Subject information and informed consent form (for publication) RiiQ_ENGLISH 1
Subject information and informed consent form (for publication) Subject information 4.7
Subject information and informed consent form (for publication) Subject information tracked changes 4.7
Subject information and informed consent form (for publication) Subject rights 1
Summary of Product Characteristics (SmPC) (for publication) French SmPC VaxigripTetra 1
Summary of Product Characteristics (SmPC) (for publication) SmPC Efluelda 1
Summary of Product Characteristics (SmPC) (for publication) SmPC Influvactetra 1
Summary of Product Characteristics (SmPC) (for publication) SmPC Vaxigriptetra 1
Synopsis of the protocol (for publication) Protocol synopsis 4.2
Synopsis of the protocol (for publication) Protocol synopsis tracked changes 4.2

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2022-04-26 Denmark Acceptable
2022-06-28
2022-06-28
2 SUBSTANTIAL MODIFICATION SM-4 2022-09-05 Denmark Acceptable
2022-09-06
2022-09-06
3 SUBSTANTIAL MODIFICATION SM-5 2022-09-06 Denmark Acceptable
2022-09-20
2022-09-20
4 SUBSTANTIAL MODIFICATION SM-6 2022-10-03 Denmark Acceptable 2022-10-14
5 SUBSTANTIAL MODIFICATION SM-7 2023-06-18 Denmark Acceptable
2023-07-07
2023-07-07
6 SUBSTANTIAL MODIFICATION SM-8 2023-08-23 Denmark Acceptable
2023-09-20
2023-09-20
7 SUBSTANTIAL MODIFICATION SM-9 2024-04-01 Denmark Acceptable with conditions
2024-06-04
2024-06-04
8 SUBSTANTIAL MODIFICATION SM-10 2024-06-18 Denmark Acceptable
2024-07-09
2024-07-10
9 SUBSTANTIAL MODIFICATION SM-11 2024-07-11 Denmark Acceptable
2024-08-26
2024-08-26
10 SUBSTANTIAL MODIFICATION SM-12 2024-09-02 Denmark Acceptable
2024-09-26
2024-09-27