A Phase 3 interventional study of MMRVNS vaccine and MMRV vaccine in Measles, Mumps and Rubella, sponsored by GlaxoSmithKline. Not yet recruiting at 62 sites in 6 countries. Open to participants aged 4 Years to 6 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-03.
Sponsored by GlaxoSmithKline · Phase 3, Interventional, and Prevention
The purpose of this study is to evaluate how consistently 3 different manufacturing lots of the GSK's investigational measles, mumps, rubella, and varicella (MMRVNS) vaccine will produce an immune response. It will also compare the overall immune response to the MMRVNS vaccine with that of the Merck licensed measles, mumps, rubella, and varicella (MMRV) vaccine.
The vaccines will be given as a second dose to children aged 4 to 6 years who have previously received a first dose of any combination of measles, mumps, rubella, and varicella-containing vaccine(s).
The study will also assess the immune response and safety of the MMRVNS and MMRV vaccines when given at the same time as a diphtheria, tetanus, acellular pertussis, and inactivated poliovirus (DTaP-IPV) vaccine. The DTaP-IPV vaccine used is licensed as Kinrix in the United States.
134 studies on the registry are indexed under Measles; 17 are open to participants now.
This study's planned enrollment of 1,860 is above the median of 852 across 105 interventional studies indexed under Measles.
Browse Measles studies →GlaxoSmithKline is the lead sponsor of 3,650 studies on the registry; 118 are open to participants now.
Of its 264 completed or terminated interventional studies of FDA-regulated products, 241 (91%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria (EXC):
EXC#14 Chronic administration of immune-modifying drugs (defined as more than 14 consecutive days in total) and/or planned use of long-acting immune modifying treatments at any time up to the end of the study.
Up to 90 days prior to the study interventions administration.
EXC#17 Occurrence of any of the following events after a previous administration of DTP vaccine:
Influenza vaccines:
Live attenuated influenza vaccine must not be administered during the period starting 30 days before the dose and ending 43 days after the dose of study intervention administration (Visit 2).
If emergency mass vaccination for an unforeseen public health threat (e.g., a pandemic) is recommended and/or organized by public health authorities outside the routine immunization program, the time period described above can be reduced, provided it is used according to the local governmental recommendations and sponsor is notified.
EXC#23 Participants with the following high-risk individuals in their household:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants will receive a single dose of the Lot 1 MMRVNS vaccine and a single dose of the DTaP-IPV vaccine on Day 1.
Biological: MMRVNS vaccine · Biological: DTaP-IPV vaccine
Participants will receive a single dose of the Lot 2 MMRVNS vaccine and a single dose of the DTaP-IPV vaccine on Day 1.
Biological: MMRVNS vaccine · Biological: DTaP-IPV vaccine
Participants will receive a single dose of the Lot 3 MMRVNS vaccine and a single dose of the DTaP-IPV vaccine on Day 1.
Biological: MMRVNS vaccine · Biological: DTaP-IPV vaccine
Participants will receive a single dose of MMRV vaccine and a single dose of DTaP-IPV vaccine on Day 1.
Biological: MMRV vaccine · Biological: DTaP-IPV vaccine
MMRVNS vaccine will be administered on Day 1.
MMRV vaccine will be administered on Day 1.
Also known as: ProQuad
DTaP-IPV vaccine will be administered on Day 1.
Also known as: Kinrix
Geometric mean concentrations (GMCs) of immunoglobulin G (IgG) antibodies against measles, mumps, rubella, and varicella zoster virus (VZV) glycoprotein E (gE) after MMRVNS vaccine administration
This outcome measure evaluates immunological consistency.
Time frame: At Day 43
Number of participants with seroresponse against measles, mumps, rubella, and VZV gE after MMRVNS or MMRV administration
This outcome measure evaluates immunological non-inferiority. Seroresponse is defined as post-vaccination IgG antibody concentrations equal to or above threshold values as follows: The seroresponse of a participant is: * zero (non-seroresponder) if the IgG concentration is below the seroresponse threshold of the assay, * One (seroresponder) if the IgG concentration is above or equal to the seroresponse threshold.
Time frame: At Day 43
GMCs of IgG concentrations against measles, mumps, rubella, and VZV gE after MMRVNS or MMRV administration
This outcome measure evaluates immunological non-inferiority.
Time frame: At Day 43
GMCs of IgG antibodies against diphtheria, tetanus, and pertussis antigens (Bordetella pertussis toxin, filamentous hemagglutinin, and outer membrane protein pertactin) after MMRVNS or MMRV administration in a subset of participants
This outcome measure evaluates immunological non-inferiority.
Time frame: At Day 43
Geometric mean titers (GMTs) of neutralizing antibodies against poliovirus 1, 2, and 3 after MMRVNS or MMRV administration in a subset of participants
This outcome measure evaluates immunological non-inferiority.
Time frame: At Day 43
Booster response of IgG concentrations against pertussis antigens (Bordetella pertussis toxin, filamentous hemagglutinin, and outer membrane pertactin) after DTaP-IPV co-administration with MMRVNS or MMRV in a subset of participants
The booster response of a participant is: One (responder) if: \- the pre-vaccination antibody concentration is below the assay cut-off, and the post-vaccination antibody concentration is \>=4 times the assay cut-off. or, - the pre-vaccination antibody concentration is between the assay cut-off and 4 times the assay cut-off, and the post-vaccination antibody concentration is \>=4 times the pre vaccination antibody concentration. or, \- the pre-vaccination antibody concentration is greater or equal to 4 times the assay cut-off, and the post vaccination antibody concentration is \>=2 times the pre-vaccination antibody concentration. Zero (non-responder) in all other cases.
Time frame: At Day 43
Number of participants with any solicited administration site events following MMRVNS or MMRV administration
Solicited administration site events are injection site redness, pain/tenderness, swelling, and injection site varicella-like rash.
Time frame: From Day 1 to Day 4 for injection site redness, pain/tenderness, and swelling; and from Day 1 to Day 43 for injection site varicella-like rash
Number of participants with any solicited systemic events following MMRVNS or MMRV administration
Solicited systemic events are somnolence (sleepiness/drowsiness), loss of appetite, fever, varicella-like rash (non-injection site), measles/rubella-like rash, and other rash that is not varicella-like or measles/rubella-like rash.
Time frame: From Day 1 to Day 15 for somnolence and loss of appetite; Day 1 to Day 22 for fever; Day 1 to Day 43 for varicella-like rash (non-injection site), measles/rubella-like rash, and other rash
Number of participants with any unsolicited adverse events (AEs) following MMRVNS or MMRV administration
An unsolicited AE is an AE that is either not included in the list of solicited events or could be included in the list of solicited events but with an onset outside the specified period of follow- up for solicited events.
Time frame: From Day 1 to Day 43
Number of participants with any medically attended adverse events (MAAEs) following MMRVNS or MMRV administration
MAAEs are solicited AEs and unsolicited nonserious AEs for which the participant received medical attention (an unscheduled visit to or from medical personnel for any reason, including emergency room visits).
Time frame: From Day 1 to Day 181
Number of participants with serious adverse events (SAEs), fatal SAEs, and related SAEs following MMRVNS or MMRV administration
An SAE is defined as any untoward medical occurrence that results in death, is life threatening, requires inpatient hospitalization or prolongs existing hospitalization, results in persistent or significant disability/incapacity, or other medically significant events.
Time frame: From Day 1 to Day 181
Plan to share: Yes — Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://www.gsk-studyregister.com/gsk-patient-level-data-sharing-july2025.pdf
Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report
Time frame: Anonymized IPD will be made available within 6 months of publication of primary, key secondary and safety results for studies in product with approved indication(s) or asset(s) with development terminated across all indications.
Access criteria: Anonymized IPD is shared with researchers whose proposals are approved by an Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months, but an extension may be granted, when justified, for up to 6 months.
Data sharing details ↗ · www.gsk-studyregister.com
No publications or documents are linked to this record.
Start is estimated for Aug 2026; primary completion for Jun 2028, 22 months later.
Of 16 phase 3 interventional studies under Measles, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 24. This study's planned 22 months is above that.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.
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