Non-specific Effects of a Modified Measles Vaccination Schedule to Prevent Allergy and Unrelated Infection in Children

NCT ID: NCT05758532

Last Updated: 2024-05-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE4

Total Enrollment

500 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-17

Study Completion Date

2026-12-31

Brief Summary

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The goal of this clinical trial is to evaluate the off-target/non-specific effects of the measles-mumps-rubella (MMR) vaccine in children.

Detailed Description

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The overall objective of this project is to assess, in a randomised control trial (RCT), the effects of a "modified" MMR schedule in children, by an in-depth characterisation of both the clinical effects and the underlying immunomodulatory changes.

The current Swiss administration schedule of giving MMR at 9 and 12 months of age ("current schedule") will be compared with a "modified schedule". This is expected to maximise the beneficial non-specific effects of MMR by giving it at 6 and 13 months of age, separately from other vaccines ("modified schedule"). Factorial analysis will enable assessment of the benefit of the intervention on each of the two doses of MMR separately or in combination.

The clinical aims are to determine whether a modified schedule of MMR administration reduces both the risk and severity of: (i) infections with unrelated pathogens and (ii) atopic and allergic diseases.

The laboratory aims are to: (i) quantify and characterise the immunological non-specific effects of MMR, and (ii) identify the biological pathways and molecular mechanisms that are altered by MMR vaccination.

Conditions

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Respiratory Tract Infections Infections Allergy Eczema

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Phase IV, single-centre, 4-group, open-label, randomised controlled trial with a factorial design (primary outcome analysed as a 2-group trial)
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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C.C. : Both MMR doses given on current schedule (9 months and 12 months)

Measles-mumps-rubella (MMR) vaccine 0.5 ml injected intramuscularly, at:

* 9 months (= current Swiss schedule)
* 12 months, concomitant with other vaccines (= current Swiss schedule)

Group Type ACTIVE_COMPARATOR

Measles-Mumps-Rubella vaccine (MMR)

Intervention Type BIOLOGICAL

0.5 ml of MMR vaccine injected intramuscularly in the deltoid region or in the anterolateral area of the thigh

M.C. : 1st MMR on modified schedule (6 months) and 2nd MMR on current schedule (12 months)

Measles-mumps-rubella (MMR) vaccine 0.5 ml injected intramuscularly, at:

* 6 months (= modified schedule)
* 12 months, concomitant with other vaccines (= current Swiss schedule)

Group Type EXPERIMENTAL

Measles-Mumps-Rubella vaccine (MMR)

Intervention Type BIOLOGICAL

0.5 ml of MMR vaccine injected intramuscularly in the deltoid region or in the anterolateral area of the thigh

C. M. : 1st MMR on current schedule (9 months) and 2nd MMR on modified schedule (13 months)

Measles-mumps-rubella (MMR) vaccine 0.5 ml injected intramuscularly, at:

* 9 months (= current Swiss schedule)
* 13 months, distant from other vaccines (= modified schedule)

Group Type EXPERIMENTAL

Measles-Mumps-Rubella vaccine (MMR)

Intervention Type BIOLOGICAL

0.5 ml of MMR vaccine injected intramuscularly in the deltoid region or in the anterolateral area of the thigh

M.M. : Both MMR doses given on modified schedule (6 months and 13 months)

Measles-mumps-rubella (MMR) vaccine 0.5 ml injected intramuscularly, at:

* 6 months (= modified schedule)
* 13 months, distant from other vaccines (= modified schedule)

Group Type EXPERIMENTAL

Measles-Mumps-Rubella vaccine (MMR)

Intervention Type BIOLOGICAL

0.5 ml of MMR vaccine injected intramuscularly in the deltoid region or in the anterolateral area of the thigh

Interventions

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Measles-Mumps-Rubella vaccine (MMR)

0.5 ml of MMR vaccine injected intramuscularly in the deltoid region or in the anterolateral area of the thigh

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Informed Consent as documented by signature
2. 6-month-old children
3. In overall good health, without any clinically significant concomitant disease states (e.g., renal failure, hepatic dysfunction, cardiovascular disease, etc.) and no clinically significant abnormal finding on history and/or physical examination
4. Fully immunised for age according to the Swiss vaccination schedule

1. with at least 2 doses of DTP-containing vaccine
2. the last dose of vaccine received at least 2 weeks prior to enrolment

Exclusion Criteria

1. Contra-indications to MMR, including

1. immunosuppression (i.e. proven, suspected, or planned)
2. allergy to a component of the vaccine
3. receipt of a live-attenuated vaccine in the four weeks prior to inclusion
2. Vaccine refusal
3. Indication for an early MMR vaccination, including

1. Measles outbreak
2. Planned immunosuppression (indication to an accelerated schedule to be completed before starting an immunosuppressive treatment)
3. Travel to a region with a high risk of measles outbreak
4. Indication for vaccination with MMR-varicella (MMRV) instead of MMR, including

1. severe eczema
2. parental will
5. Parental inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, known/suspected non-compliance, substance abuse, etc.
6. Plan to move out of the country or have prolong absence during the trial
7. Other sibling included in the trial (in the case of multiple pregnancy, only one child can be randomised)
8. Any temporary contra-indication to MMR, including child being sick (active significant illness, inclusion can be delayed a few days until the illness resolves)
Minimum Eligible Age

6 Months

Maximum Eligible Age

6 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Laure Pittet, MD-PhD

OTHER

Sponsor Role lead

Responsible Party

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Laure Pittet, MD-PhD

Clinical Scientist

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Laure F Pittet, MD-PhD

Role: PRINCIPAL_INVESTIGATOR

University Hospitals of Geneva

Locations

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University Hospitals of Geneva

Geneva, , Switzerland

Site Status RECRUITING

Countries

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Switzerland

Central Contacts

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Laure F Pittet, MD-PhD

Role: CONTACT

+41 22 372 33 11

Facility Contacts

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Laure F Pittet, MD-PhD

Role: primary

Other Identifiers

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Ambizione n° PZ00P3_209050

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

STARTER-MD n° RS08-08

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

PRD n° 4-2022-I

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

2022-00616

Identifier Type: -

Identifier Source: org_study_id

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