ClinicalTrials.gg
CompletedNCT01536405Updated Oct 31, 2018Results posted

Safety, Tolerability, and Immunogenicity of Measles, Mumps, Rubella, and Varicella (MMRV) Vaccine Made With an Alternative Manufacturing Process (AMP)(V221-027)

A Phase 3 interventional study of MMRV (AMP) and MMRV (2006 process) in Measles, Mumps and Rubella, sponsored by Merck Sharp & Dohme LLC. Completed. Open to participants aged 12 Months to 23 Months, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-10-31.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
1,412
Allocation
Randomized
Ages
12 Months to 23 Months
Sex
All
01

Study summary

This study will compare the safety, tolerability, and immunogenicity of measles, mumps, rubella, and varicella (MMRV) vaccine made with an alternative manufacturing process with those of the 2006 process

02

Conditions studied

  • Measles
  • Mumps
  • Rubella
  • Varicella
03

In context

Measles

134 studies on the registry are indexed under Measles; 17 are open to participants now.

This study's enrollment of 1,412 is above the median of 852 across 105 interventional studies indexed under Measles.

Browse Measles studies →

Lead sponsor

Merck Sharp & Dohme LLC is the lead sponsor of 2,166 studies on the registry; 132 are open to participants now.

Of its 501 completed or terminated interventional studies of FDA-regulated products, 370 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Months to 23 Months
Sexes eligible
All
Accepts healthy volunteers
Yes

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.

Inclusion criteria

  • Negative clinical history for measles, mumps, rubella, varicella, and zoster

Exclusion criteria

Exclusion Criteria:

  • Received any measles, mumps, rubella, or varicella vaccine, either alone or in any combination at any time prior to the study, or is anticipated to receive any of these vaccines outside of study protocol, either alone or in any combination, during the study
  • Received immune globulin, a blood transfusion or blood-derived products (does not include autologous blood/blood products) within 5 months (150 days) prior to any dose of the study vaccines or plans to receive these products while enrolled in this study
  • Exposed to measles, mumps, rubella, varicella, or zoster within 4 weeks prior to the study vaccination
  • Any congenital or acquired immune deficiency, neoplastic disease, or depressed immunity, including that resulting from use or other therapy
  • Received 1) systemic immunomodulatory steroids [greater than the

equivalent of 2 mg/kg total daily dose of prednisone] within 3 months prior to

entering the study, or 2) any dose of systemic immunomodulatory steroids within

7 days prior to entering study, or 3) is expected to require systemic immunomodulatory steroids through the course of the study

  • History of allergy or anaphylactoid reaction to gelatin, sorbitol, neomycin, egg proteins (eggs or egg products), chicken proteins, or any component of the study vaccines
  • Received salicylates (eg, aspirin or aspirin-containing products) within 14 days prior to study vaccination
  • Diagnosis of an active neurological disorder. Enrollment may be considered

when the disease process has been stabilized

  • History of seizure disorder, including single febrile seizure
  • Diagnosis of active untreated tuberculosis
  • History of thrombocytopenia
  • Born to a (HIV) infected mother
Terms in these criteria, in plain language(3)

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.

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.

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.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
1,412 participants (actual)

Study arms

  • Experimental
    MMRV (AMP)

    Participants received two 0.5 mL subcutaneous injections of Mumps, Measles, Rubella, Varicella (MMRV) vaccine made with an alternative manufacturing process (AMP)

    Biological: MMRV (AMP)

  • Active comparator
    MMRV (2006 process)

    Participants received two 0.5 mL subcutaneous injections of MMRV vaccine made with the 2006 manufacturing process

    Biological: MMRV (2006 process)

Interventions

  • BiologicalMMRV (AMP)

    Measles, mumps, rubella, and VZV vaccine made with an alternative manufacturing process. Participants will receive two 0.5 mL subcutaneous injections.

  • Measles, mumps, rubella, and VZV vaccine made with the 2006 manufacturing process. Participants will receive two 0.5 mL subcutaneous injections.

    Also known as: ProQuad™

06

What researchers measure

Primary outcomes

  1. Percentage of Participants With Varicella Zoster Virus (VZV) Antibody Levels >=5 gpELISA Units/mL

    Sera were tested for VZV Immunoglobulin (IgG) antibody levels by a glycoprotein enzyme-linked immunosorbent assay (gpELISA)

    Time frame: Six weeks after vaccination 1

  2. Percentage of Participants With Measles Virus Antibody Levels >=255 mIU/mL

    Sera were tested for measles virus IgG antibody levels by an ELISA

    Time frame: Six weeks after vaccination 1

  3. Percentage of Participants With Mumps Virus Antibody Levels >=10 Units/mL

    Sera were tested for mumps virus IgG antibody levels by an enzyme-linked immunosorbent assay (ELISA)

    Time frame: Six weeks after vaccination 1

  4. Percentage of Participants With Rubella Virus Antibody Levels >=10 International Units/mL (IU/mL)

    Sera were tested for rubella virus IgG antibody levels by an ELISA

    Time frame: Six weeks after vaccination 1

  5. Geometric Mean Titer (GMT) of VZV Antibodies

    Sera were tested for VZV IgG antibody levels by gpELISA

    Time frame: Six weeks after vaccination 1

  6. Geometric Mean Titer (GMT) of Measles Virus Antibodies

    Sera were tested for measles virus IgG antibody levels by ELISA

    Time frame: Six weeks after vaccination 1

  7. Geometric Mean Titer (GMT) of Mumps Virus Antibodies

    Sera were tested for mumps virus IgG antibody levels by ELISA

    Time frame: Six weeks after vaccination 1

  8. Geometric Mean Titer (GMT) of Rubella Virus Antibodies

    Sera were tested for rubella virus IgG antibody levels by ELISA

    Time frame: Six weeks after vaccination 1

  9. Percentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)

    Time frame: Up to 5 days after vaccination 1

Secondary outcomes

  1. Percentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)

    Time frame: Up to 42 days after each vaccination

  2. Percentage of Participants With Zoster-like Rash

    Time frame: Up to 42 days after each vaccination

  3. Percentage of Participants With Mumps-like Symptoms

    Time frame: Up to 42 days after each vaccination

  4. Percentage of Participants With Measles-like Rash

    Time frame: Up to 42 days after each vaccination

  5. Percentage of Participants With Rubella-like Rash

    Time frame: Up to 42 days after each vaccination

  6. Percentage of Participants With Varicella-like Rash

    Time frame: Up to 42 days after each vaccination

  7. Percentage of Participants With an Injection-site Adverse Event

    An adverse event (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study vaccine, whether or not considered related to the use of the product. Any worsening of a preexisting condition which is temporally associated with the use of the study vaccine is also an AE. Injection-site AEs reported were solicited with a Vaccine Report Card.

    Time frame: Up to 5 days after each vaccination

07

Results

Posted Jul 2, 2014

Participant flow

Randomization to Visit 1 (Vaccination 1)
Participant flow — Randomization to Visit 1 (Vaccination 1)
MilestoneMMRV (AMP)MMRV (2006 Process)
Started706706
Completed698702
Not completed84
Withdrew: Not vaccinated84
Visit 1 (Vaccination 1) to Visit 2
Participant flow — Visit 1 (Vaccination 1) to Visit 2
MilestoneMMRV (AMP)MMRV (2006 Process)
Started698702
Received vaccination 1698702
Completed666662
Not completed3240
Withdrew: Withdrawal by subject1218
Withdrew: Lost to follow-up2022
Visit 2 to Visit 3 (Vaccination 2)
Participant flow — Visit 2 to Visit 3 (Vaccination 2)
MilestoneMMRV (AMP)MMRV (2006 Process)
Started666662
Completed635634
Not completed3128
Withdrew: Withdrawal by subject1713
Withdrew: Adverse event33
Withdrew: Lost to follow-up910
Withdrew: Protocol violation22
Visit 3 (Vaccination 2) to Visit 4
Participant flow — Visit 3 (Vaccination 2) to Visit 4
MilestoneMMRV (AMP)MMRV (2006 Process)
Started635634
Received vaccination 2634632
Completed615618
Not completed2016
Withdrew: Withdrawal by subject32
Withdrew: Adverse event10
Withdrew: Lost to follow-up1614
Visit 4 to Extended Study Follow-up
Participant flow — Visit 4 to Extended Study Follow-up
MilestoneMMRV (AMP)MMRV (2006 Process)
Started615618
Completed595595
Not completed2023
Withdrew: Withdrawal by subject02
Withdrew: Adverse event01
Withdrew: Lost to follow-up2020

Outcome measures

PrimaryPercentage of Participants With Varicella Zoster Virus (VZV) Antibody Levels >=5 gpELISA Units/mL

Sera were tested for VZV Immunoglobulin (IgG) antibody levels by a glycoprotein enzyme-linked immunosorbent assay (gpELISA)

Time frame:
Six weeks after vaccination 1
Reported as:
Number · Percentage of participants
Percentage of Participants With Varicella Zoster Virus (VZV) Antibody Levels >=5 gpELISA Units/mL
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Percentage of Participants With Varicella Zoster Virus (VZV) Antibody Levels >=5 gpELISA Units/mL97.3 (95.6 to 98.4)93.0 (90.7 to 95.0)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · Miettinen and Nurminen · p = <0.001 · Risk difference (rd): 4.2 · 95% CI 1.8 to 6.8RD = MMRV (AMP) - MMRV (2006 process)
  • MMRV (AMP) · One-sample binomial · p = <0.001 · Response rate: 97.3 · 95% CI 95.6 to 98.4
PrimaryPercentage of Participants With Measles Virus Antibody Levels >=255 mIU/mL

Sera were tested for measles virus IgG antibody levels by an ELISA

Time frame:
Six weeks after vaccination 1
Reported as:
Number · Percentage of participants
Percentage of Participants With Measles Virus Antibody Levels >=255 mIU/mL
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Percentage of Participants With Measles Virus Antibody Levels >=255 mIU/mL96.7 (94.9 to 97.9)98.9 (97.7 to 99.5)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · Miettinen and Nurminen · p = 0.003 · Risk difference (rd): -2.2 · 95% CI -4.0 to -0.6RD = MMRV (AMP) - MMRV (2006 process)
  • MMRV (AMP) · One-sample binomial · p = <0.001 · Response rate: 96.7 · 95% CI 94.9 to 97.9
PrimaryPercentage of Participants With Mumps Virus Antibody Levels >=10 Units/mL

Sera were tested for mumps virus IgG antibody levels by an enzyme-linked immunosorbent assay (ELISA)

Time frame:
Six weeks after vaccination 1
Reported as:
Number · Percentage of participants
Percentage of Participants With Mumps Virus Antibody Levels >=10 Units/mL
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Percentage of Participants With Mumps Virus Antibody Levels >=10 Units/mL98.2 (96.8 to 99.1)97.2 (95.6 to 98.4)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · Miettinen and Nurminen · p = <0.001 · Risk difference (rd): 1.0 · 95% CI -0.7 to 2.8RD = MMRV (AMP) - MMRV (2006 process)
  • MMRV (AMP) · One-sample binomial · p = <0.001 · Response rate: 98.2 · 95% CI 96.8 to 99.1
PrimaryPercentage of Participants With Rubella Virus Antibody Levels >=10 International Units/mL (IU/mL)

Sera were tested for rubella virus IgG antibody levels by an ELISA

Time frame:
Six weeks after vaccination 1
Reported as:
Number · Percentage of participants
Percentage of Participants With Rubella Virus Antibody Levels >=10 International Units/mL (IU/mL)
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Percentage of Participants With Rubella Virus Antibody Levels >=10 International Units/mL (IU/mL)98.8 (97.6 to 99.5)99.3 (98.3 to 99.8)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · Miettinen and Nurminen · p = <0.001 · Risk difference (rd): -0.5 · 95% CI -1.8 to 0.7RD = MMRV (AMP) - MMRV (2006 process)
  • MMRV (AMP) · One-sample binomial · p = <0.001 · Response rate: 98.8 · 95% CI 97.6 to 99.5
PrimaryGeometric Mean Titer (GMT) of VZV Antibodies

Sera were tested for VZV IgG antibody levels by gpELISA

Time frame:
Six weeks after vaccination 1
Reported as:
Geometric mean · ELISA units/mL
Geometric Mean Titer (GMT) of VZV Antibodies
ELISA units/mLMMRV (AMP)MMRV (2006 Process)
Geometric Mean Titer (GMT) of VZV Antibodies17.3 (16.4 to 18.3)14.4 (13.6 to 15.2)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · t-test, 2 sided · p = <0.001 · Gmt ratio: 1.2 · 95% CI 1.1 to 1.3GMT ratio = MMRV (AMP) / MMRV (2006 process)
PrimaryGeometric Mean Titer (GMT) of Measles Virus Antibodies

Sera were tested for measles virus IgG antibody levels by ELISA

Time frame:
Six weeks after vaccination 1
Reported as:
Geometric mean · mIU/mL
Geometric Mean Titer (GMT) of Measles Virus Antibodies
mIU/mLMMRV (AMP)MMRV (2006 Process)
Geometric Mean Titer (GMT) of Measles Virus Antibodies3426.5 (3162.5 to 3712.4)3719.5 (3506.0 to 3946.0)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · t-test, 2 sided · p = <0.001 · Gmt ratio: 0.9 · 95% CI 0.8 to 1.0GMT ratio = MMRV (AMP) / MMRV (2006 process)
PrimaryGeometric Mean Titer (GMT) of Mumps Virus Antibodies

Sera were tested for mumps virus IgG antibody levels by ELISA

Time frame:
Six weeks after vaccination 1
Reported as:
Geometric mean · Mumps Ab units/mL
Geometric Mean Titer (GMT) of Mumps Virus Antibodies
Mumps Ab units/mLMMRV (AMP)MMRV (2006 Process)
Geometric Mean Titer (GMT) of Mumps Virus Antibodies112.1 (104.1 to 120.7)114.0 (105.8 to 122.8)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · t-test, 2 sided · p = <0.001 · Gmt ratio: 1.0 · 95% CI 0.9 to 1.1GMT ratio = MMRV (AMP) / MMRV (2006 process)
PrimaryGeometric Mean Titer (GMT) of Rubella Virus Antibodies

Sera were tested for rubella virus IgG antibody levels by ELISA

Time frame:
Six weeks after vaccination 1
Reported as:
Geometric mean · IU/mL
Geometric Mean Titer (GMT) of Rubella Virus Antibodies
IU/mLMMRV (AMP)MMRV (2006 Process)
Geometric Mean Titer (GMT) of Rubella Virus Antibodies81.8 (76.8 to 87.2)80.7 (76.4 to 85.2)
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · t-test, 2 sided · p = <0.001 · Gmt ratio: 1.0 · 95% CI 0.9 to 1.1GMT ratio = MMRV (AMP) / MMRV (2006 process)
PrimaryPercentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)
Time frame:
Up to 5 days after vaccination 1
Reported as:
Number · Percentage of participants
Percentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Percentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)0.90.8
Statistical analysis
  • MMRV (AMP) vs MMRV (2006 Process) · Miettinen and Nurminen · p = <0.001 · Risk difference (rd): 0.2 · 95% CI -1.0 to 1.3RD = MMRV (AMP) - MMRV (2006 process)
SecondaryPercentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)
Time frame:
Up to 42 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With Fever (>=102.2°F [39.0°C] or Oral Equivalent)
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=650, n=64910.010.6
Vaccination 2; n=592, n=5975.78.4
SecondaryPercentage of Participants With Zoster-like Rash
Time frame:
Up to 42 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With Zoster-like Rash
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=682, n=6820.00.0
Vaccination 2; n=634, n=6320.00.0
SecondaryPercentage of Participants With Mumps-like Symptoms
Time frame:
Up to 42 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With Mumps-like Symptoms
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=682, n=6820.00.0
Vaccination 2; n=634, n=6320.00.0
SecondaryPercentage of Participants With Measles-like Rash
Time frame:
Up to 42 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With Measles-like Rash
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=682, n=6820.10.3
Vaccination 2; n=634, n=6320.20.0
SecondaryPercentage of Participants With Rubella-like Rash
Time frame:
Up to 42 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With Rubella-like Rash
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=682, n=6820.00.0
Vaccination 2; n=634, n=6320.00.0
SecondaryPercentage of Participants With Varicella-like Rash
Time frame:
Up to 42 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With Varicella-like Rash
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=682, n=6820.60.0
Vaccination 2; n=634, n=6320.00.0
SecondaryPercentage of Participants With an Injection-site Adverse Event

An adverse event (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study vaccine, whether or not considered related to the use of the product. Any worsening of a preexisting condition which is temporally associated with the use of the study vaccine is also an AE. Injection-site AEs reported were solicited with a Vaccine Report Card.

Time frame:
Up to 5 days after each vaccination
Reported as:
Number · Percentage of participants
Percentage of Participants With an Injection-site Adverse Event
Percentage of participantsMMRV (AMP)MMRV (2006 Process)
Vaccination 1; n=682, n=68236.429.8
Vaccination 2; n=634, n=63235.529.6

Adverse events

Collected over Up to 6 months (180 days) after vaccination 2. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
MMRV (AMP)—21/682 (3.1%)574/682 (84.2%)
MMRV (2006 Process)—18/683 (2.6%)572/683 (83.7%)
Most frequent serious events
Showing 10 of 36
Most frequent serious events
EventMMRV (AMP)MMRV (2006 Process)
Febrile convulsionNervous system disorders4/6821/683
AsthmaRespiratory, thoracic and mediastinal disorders1/6823/683
GastroenteritisInfections and infestations2/6820/683
DehydrationMetabolism and nutrition disorders2/6820/683
BronchiolitisInfections and infestations1/6822/683
Croup infectiousInfections and infestations1/6822/683
Pneumonia viralInfections and infestations0/6822/683
Otitis mediaInfections and infestations1/6820/683
PneumoniaInfections and infestations1/6820/683
Respiratory syncytial virus bronchiolitisInfections and infestations1/6820/683
Most frequent other events
Showing 10 of 18
Most frequent other events
EventMMRV (AMP)MMRV (2006 Process)
Injection site erythemaGeneral disorders254/682199/683
PyrexiaGeneral disorders225/682235/683
Injection site painGeneral disorders208/682187/683
Upper respiratory tract infectionInfections and infestations159/682163/683
Injection site swellingGeneral disorders156/682123/683
Otitis mediaInfections and infestations128/682128/683
CoughRespiratory, thoracic and mediastinal disorders87/682101/683
DiarrhoeaGastrointestinal disorders77/68291/683
Dermatitis diaperSkin and subcutaneous tissue disorders62/68277/683
NasopharyngitisInfections and infestations55/68266/683

Baseline characteristics

Age, Continuous
Age, Continuous(Months)MMRV (AMP)MMRV (2006 Process)Total
Mean13.4 ± 2.213.6 ± 2.513.5 ± 2.3
Sex: Female, Male
Sex: Female, Male(Participants)MMRV (AMP)MMRV (2006 Process)Total
Female344324668
Male362382744
08

Study locations

No study locations are listed for this record.

09

References and documents

Publications

  • Marshall GS, Senders SD, Shepard J, Twiggs JD, Gardner J, Hille D, Hartzel J, Valenzuela R, Stek JE, Helmond FA. A double blind, randomized, active controlled study to assess the safety, tolerability and immunogenicity of measles, mumps rubella, and varicella vaccine (MMRV) manufactured using an alternative process. Hum Vaccin Immunother. 2016 Aug 2;12(8):2188-2196. doi: 10.1080/21645515.2016.1165374. Epub 2016 May 5. PubMed 27149048 ↗

Individual participant data

Plan to share: Yes — https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf

Data sharing details ↗ · engagezone.msd.com

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jun 2012 to primary completion in Jul 2013, 12 months.

Results were first posted in Jul 2014, 1 year after primary completion.

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 12 months is close to that.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 16, 2012
First posted
Feb 22, 2012
StartActual
Jun 5, 2012
Primary completionActual
Jul 2, 2013
CompletionActual
Jan 27, 2014
Results first posted
Jul 2, 2014
Last update
Oct 31, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 31, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01536405
Responsible party
Sponsor
First posted
Feb 22, 2012
Start date
Jun 5, 2012
Primary completion
Jul 2, 2013
Completion
Jan 27, 2014
Results posted
Jul 2, 2014
Last update
Oct 31, 2018

Study contacts

Medical Director
study director · Merck Sharp & Dohme LLC

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Adenosine Monophosphate

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