ClinicalTrials.gg
CompletedNCT03699124Updated May 27, 2021Results posted

Freeze-Dried MVA-BN® Lot Consistency Smallpox Trial

A Phase 3 interventional study of FD MVA-BN in Smallpox, sponsored by Bavarian Nordic. Completed at 12 sites in United States. Open to participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-05-27.

Sponsored by Bavarian Nordic · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
1,129
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

This is a Phase 3 multicenter trial to evaluate safety and immune response of three consecutive production lots of freeze-dried (FD) MVA-BN smallpox vaccine. The vaccine will be given to healthy subjects who do not have a smallpox scar.

Approximately 1110 subjects will be randomly enrolled into one of three groups:

Group 1 will include 370 subjects, who will receive two separate injections (shot) with a short needle, given below the skin of the upper arm with 0.5 mL FD MVA-BN (Lot 1).

Group 2 will include 370 subjects, who will receive two separate injections (shot) with a short needle, given below the skin of the upper arm with 0.5 mL FD MVA-BN (Lot 2).

Group 3 will include 370 subjects, who will receive two separate injections (shot) with a short needle, given below the skin of the upper arm with 0.5 mL FD MVA-BN (Lot 3).

The primary objective of the trial is to show that the immune response elicited (produced) by three consecutively produced MVA-BN lots are statistically (numerically) comparable.

02

Conditions studied

  • Smallpox

Browse trials for

03

In context

Smallpox

73 studies on the registry are indexed under Smallpox; 5 are open to participants now.

This study's enrollment of 1,129 is above the median of 150 across 61 interventional studies indexed under Smallpox.

Browse Smallpox studies →

Lead sponsor

Bavarian Nordic is the lead sponsor of 58 studies on the registry; 2 are open to participants now.

Of its 16 completed or terminated interventional studies of FDA-regulated products, 12 (75%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 45 Years
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

  • The subject has read, signed and dated the ICF
  • ≥ 18.5 and \< 35
  • Women of (WOCBP) must have used an acceptable method of for 30 days prior to the first vaccination, must agree to use an acceptable method of contraception during the trial, and must avoid becoming pregnant for at least 28 days after the last vaccination. A woman is considered of childbearing potential unless (defined as ≥ 12 months without a menstrual period) or surgically sterilized. Acceptable contraception methods are restricted to abstinence, barrier contraceptives, intrauterine contraceptive devices or licensed hormonal products).
  • WOCBP must have a negative serum pregnancy test at screening (please note: a negative urine pregnancy test is required within 24 hours prior to each vaccination)
  • White blood cells ≥ 2500/mm3 \< (Upper Limit of Normal)
  • (ANC) within normal limits
  • within normal limits
  • within normal limits
  • Adequate renal function defined as a calculated (CrCl) > 60 mL/min as estimated by the Cockcroft-Gault equation: (140 - age in years) x (body weight in kg) ÷ (serum creatinine in mg/dL x 72) = CrCl (mL/min). For women the result, calculated with the above formula, has to be multiplied by 0.85 = CrCl (mL/min)
  • Adequate hepatic function defined as: Total ≤ 1.5 x ULN in the absence of other evidence of significant liver disease (AST), alanine aminotransferase (ALT) and alkaline phosphatase ≤ 1.5 x ULN
  • (ECG) without findings (e.g. any kind of atrioventricular or intraventricular conditions or blocks such as complete left or right bundle branch block, AV node block, or PR prolongation, premature atrial contractions or other atrial arrhythmia, sustained ventricular arrhythmia, two premature ventricular contractions in a row, ST elevation consistent with ischemia).

Exclusion criteria

Exclusion Criteria:

  • Typical vaccinia scar
  • Known or suspected history of smallpox vaccination
  • History of vaccination with any poxvirus-based vaccine
  • US Military service prior to 1991 or after January 2003
  • Pregnant or breast-feeding women
  • Uncontrolled serious infection, i.e. not responding to antimicrobial therapy
  • History of any serious medical condition, which in the opinion of the investigator would compromise the safety of the subject or would limit the subject's ability to complete the trial
  • History of or active disease, persons with vitiligo or thyroid disease taking thyroid replacement are not excluded
  • Known or suspected impairment of immunologic function including, but not limited to, (HIV) Infection, liver disease (including chronic active Virus (HBV) or Virus (HCV) infection), diabetes mellitus
  • History of other than squamous cell or basal cell skin cancer, unless there has been surgical excision that is considered to have achieved cure. Subjects with history of skin cancer must not be vaccinated at the previous tumor site.
  • History or clinical manifestation of clinically significant and severe hematological, pulmonary, central nervous, cardiovascular or gastrointestinal disorders
  • Clinically significant mental disorder not adequately controlled by medical treatment
  • History of coronary heart disease, myocardial infarction, angina pectoris, congestive heart failure, cardiomyopathy, stroke or , uncontrolled high blood pressure, or any other heart condition under the care of a doctor
  • Abnormal Troponin I level >
  • Known history of an immediate family member (father, mother, brother, or sister) who has had onset of ischemic heart disease before age 50 years
  • Active or history of chronic alcohol abuse and/or intravenous and/or nasal drug abuse (within the past 6 months)
  • Known allergy to MVA-BN vaccine or any of its constituents, e.g. tris (hydroxymethyl)-amino methane, including known allergy to egg or aminoglycosides
  • History of anaphylaxis or severe allergic reaction to any vaccine
  • Acute disease (illness with or without a fever) at the time enrollment
  • Body temperature ≥ 100.4°F (≥ 38.0°C) at the time of enrollment
  • Having received any vaccinations or planned vaccinations with a within 30 days prior to or after trial vaccination
  • Having received any vaccinations or planned vaccinations with a killed/inactivated vaccine within 14 days prior to or after trial vaccination
  • Chronic systemic administration (defined as more than 14 days) of > 5 mg prednisone (or equivalent)/day or any other immune-modifying drugs during a period starting from three months prior to administration of the vaccine and ending at last physical trial visit (Visit 5)
  • Post organ transplant subjects whether or not receiving chronic therapy
  • Administration or planned administration of immunoglobulins and/or any blood products during a period starting from three months prior to administration of the vaccine and ending at last physical trial visit (Visit 5)
  • Use of any or non-registered product within 30 days preceding the first dose of the trial vaccine, or planned administration of such a drug during the trial period
  • Trial personnel
Terms in these criteria, in plain language(23)

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.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

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.

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.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

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.

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.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
1,129 participants (actual)

Study arms

  • Active comparator
    GP 1: two doses of FD MVA-BN--Lot 1

    Healthy, vaccinia-naïve subjects receiving two subcutaneous (SC) vaccinations, four weeks apart with freeze-dried (FD) MVA-BN® - Lot 1

    Biological: FD MVA-BN

  • Active comparator
    GP 2: two doses of FD MVA-BN--Lot 2

    Healthy, vaccinia-naïve subjects receiving two subcutaneous (SC) vaccinations, four weeks apart with freeze-dried (FD) MVA-BN® - Lot 2

    Biological: FD MVA-BN

  • Active comparator
    GP 3: two doses of FD MVA-BN--Lot 3

    Healthy, vaccinia-naïve subjects receiving two subcutaneous (SC) vaccinations, four weeks apart with freeze-dried (FD) MVA-BN® - Lot 3

    Biological: FD MVA-BN

Interventions

  • BiologicalFD MVA-BN

    Vaccinations with a 0.5 mL dose of vaccine containing at least 0.5 x 10E8 Infectious Units (Inf.U)

06

What researchers measure

Primary outcomes

  1. Vaccinia-Specific Neutralizing Antibodies Measured by Plaque Reduction Neutralization Test (PRNT)

    Vaccinia-specific neutralizing antibody titers below the lower limit of quantitation are given a value 10, i.e., half of the PRNT lower limit of quantitation of 20.

    Time frame: Two weeks post second vaccination; approximately Week 6.

Secondary outcomes

  1. Vaccinia-Specific Total Antibodies Measured by Enzyme-Linked Immunosorbant Assay (ELISA)

    Vaccinia-specific total antibody titers below the lower limit of quantitation are given a value 100, i.e., half of the ELISA lower limit of quantitation of 200.

    Time frame: Two weeks post second vaccination; approximately Week 6.

  2. Seroconversion Rates for Vaccinia-Specific Neutralizing Antibodies by PRNT

    Seroconversion is defined as either the appearance of antibody titers \>= LLOQ for subjects with a titer below LLOQ at baseline, or a doubling (or more) of the antibody titer compared to the baseline titer for subjects with a titer equal or above the LLOQ at baseline. The LLOQ for PRNT is 20.

    Time frame: Two weeks post second vaccination; approximately Week 6.

  3. Seroconversion Rates for Vaccinia-Specific Total Antibodies by ELISA

    Seroconversion is defined as either the appearance of antibody titers \>= LLOQ for subjects with a titer below LLOQ at baseline, or a doubling (or more) of the antibody titer compared to the baseline titer for subjects with a titer equal or above the LLOQ at baseline. The LLOQ for ELISA is 200.

    Time frame: Two weeks post second vaccination; approximately Week 6.

  4. Pearson Correlation Coefficient Between the log10 Transformed PRNT Titers and the log10 Transformed ELISA Titers

    Pearson correlation coefficient calculated on the log10 PRNT vs. ELISA titers at 2 weeks post second vaccination.

    Time frame: Two weeks post second vaccination; approximately Week 6.

  5. Occurrence, Relationship and Intensity of Any Serious Adverse Event (SAE) at Any Time During the Trial

    Occurrence is defined as the number of participants who experienced an SAE. Related SAEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where \>= Grade 3 is either Severe or Potentially Life Threatening.

    Time frame: Overall study, ie from first vaccination at Visit 1 through the Follow-up Visit approximately 32 weeks post first vaccination.

  6. Occurrence, Relationship and Intensity of Any Cardiac Sign or Symptom Indicating a Case of Myo-/Pericarditis at Any Time During the Trial.

    Occurrence is defined as the number of participants who experienced an event falling in the system organ class of "Cardiac disorders" per MedDRA version 22.0. Related cardiac signs and symptoms are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where \>= Grade 3 is either Severe or Potentially Life Threatening.

    Time frame: Overall study, ie from first vaccination at Visit 1 through the Follow-up Visit approximately 32 weeks post first vaccination.

  7. Occurrence of Any Grade 3 or 4 Unsolicited AEs Probably, Possibly or Definitely Related to the Trial Vaccine

    Related AEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where Grade 3 is Severe and Grade 4 is Potentially Life Threatening.

    Time frame: Within 28 days (and up to 35 days) after each vaccination, ie, from Visit 1 to Visit 3 for the first vaccination and from Visit 3 to Visit 5 for the second vaccination based on the protocol scheduled visits.

  8. Occurrence, Relationship and Intensity of Unsolicited AEs

    Occurrence is defined as the number of participants who experienced an unsolicited AE. Related unsolicited AEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where \>= Grade 3 is either Severe or Potentially Life Threatening.

    Time frame: Within 28 days (and up to 35 days) after each vaccination, ie, from Visit 1 to Visit 3 for the first vaccination and from Visit 3 to Visit 5 for the second vaccination based on the protocol scheduled visits.

  9. Occurrence and Intensity of Solicited Local AEs (Redness, Swelling, Induration, Pruritus and Pain).

    Occurrence is defined as the number of participants who experienced a solicited local AE. Intensity is defined per the protocol for each local event type. For injection site erythema, swelling, and induration the intensity is graded based on the maximum diameter as Grade 1: \< 30mm, Grade 2: \>= 30 - \< 100mm, Grade 3: \>= 100mm. Intensity for pruritis is defined as Grade 1: mild, Grade 2: moderate, Grade 3: severe. Intensity for injection site pain is defined as Grade 1: Painful on touch, Grade 2: Painful when moving the limb, Grade 3: Spontaneously painful/prevents normal activity. If a participant experienced the local event after both vaccinations, the maximum intensity is presented.

    Time frame: During the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits.

  10. Duration of Solicited Local AEs (Redness, Swelling, Induration, Pruritus and Pain).

    Number of days from the start of the local event to resolution. If a participant experienced the local event after both vaccinations, the longer duration is presented. Subjects who had a missing resolution date for the event are not included in the analysis.

    Time frame: Starting during the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie, Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits, through resolution.

  11. Occurrence, Relationship, and Intensity of Solicited General AEs (Pyrexia, Headache, Myalgia, Nausea, Fatigue and Chills).

    Occurrence is defined as the number of participants who experienced a solicited general AE. Related solicited general AEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the protocol for each general event type. For pyrexia (increased body temperature) grading is defined as Grade 1: ≥ 99.5 - \< 100.4°F (≥ 37.5 - \< 38.0°C), Grade 2:≥ 100.4 - \< 102.2°F (≥ 38.0 - \< 39.0°C), Grade 3:≥ 102.2 - \< 104°F (≥ 39.0 - \< 40.0°C), and Grade 4: ≥ 104°F (≥ 40.0°C). Intensity for headache, myalgia, nausea, fatigue and chills is defined as Grade 1: mild, Grade 2: moderate, Grade 3: severe. If a participant experienced the general event after both vaccinations, the maximum intensity is presented.

    Time frame: During the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits.

  12. Duration of Solicited General AEs (Pyrexia [Body Temperature Increase], Headache, Myalgia, Nausea, Fatigue and Chills)

    Number of days from the start of the general event to resolution. If a participant experienced the general event after both vaccinations, the longer duration is presented. Subjects who had a missing resolution date for the event are not included in the analysis.

    Time frame: Starting during the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie, Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits, through resolution.

07

Results

Posted May 27, 2021
Limitations and caveats
There were no limitations on the trial.

Participant flow

Participant flow — Overall Study
MilestoneGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Started377375377
Completed332335337
Not completed454040
Withdrew: Adverse event652
Withdrew: Death020
Withdrew: Lost to follow-up201615
Withdrew: Protocol violation100
Withdrew: Withdrawal by subject131413
Withdrew: Other reasons5310

Outcome measures

PrimaryVaccinia-Specific Neutralizing Antibodies Measured by Plaque Reduction Neutralization Test (PRNT)

Vaccinia-specific neutralizing antibody titers below the lower limit of quantitation are given a value 10, i.e., half of the PRNT lower limit of quantitation of 20.

Time frame:
Two weeks post second vaccination; approximately Week 6.
Reported as:
Geometric mean · Titer
Vaccinia-Specific Neutralizing Antibodies Measured by Plaque Reduction Neutralization Test (PRNT)
TiterGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Vaccinia-Specific Neutralizing Antibodies Measured by Plaque Reduction Neutralization Test (PRNT)252.7 (231.3 to 276.0)269.9 (243.2 to 299.7)242.0 (219.5 to 266.8)
Statistical analysis
  • GP 1: Two Doses of FD MVA-BN--Lot 1 vs GP 2: Two Doses of FD MVA-BN--Lot 2 · Gmt ratio: 0.936 · 95% CI 0.816 to 1.073
  • GP 2: Two Doses of FD MVA-BN--Lot 2 vs GP 3: Two Doses of FD MVA-BN--Lot 3 · Gmt ratio: 1.115 · 95% CI 0.967 to 1.287
  • GP 1: Two Doses of FD MVA-BN--Lot 1 vs GP 3: Two Doses of FD MVA-BN--Lot 3 · Gmt ratio: 1.044 · 95% CI 0.915 to 1.191
SecondaryVaccinia-Specific Total Antibodies Measured by Enzyme-Linked Immunosorbant Assay (ELISA)

Vaccinia-specific total antibody titers below the lower limit of quantitation are given a value 100, i.e., half of the ELISA lower limit of quantitation of 200.

Time frame:
Two weeks post second vaccination; approximately Week 6.
Reported as:
Geometric mean · Titer
Vaccinia-Specific Total Antibodies Measured by Enzyme-Linked Immunosorbant Assay (ELISA)
TiterGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Vaccinia-Specific Total Antibodies Measured by Enzyme-Linked Immunosorbant Assay (ELISA)1222 (1123.3 to 1329.4)1311 (1195.7 to 1437.5)1226.1 (1118.1 to 1344.6)
SecondarySeroconversion Rates for Vaccinia-Specific Neutralizing Antibodies by PRNT

Seroconversion is defined as either the appearance of antibody titers \>= LLOQ for subjects with a titer below LLOQ at baseline, or a doubling (or more) of the antibody titer compared to the baseline titer for subjects with a titer equal or above the LLOQ at baseline. The LLOQ for PRNT is 20.

Time frame:
Two weeks post second vaccination; approximately Week 6.
Reported as:
Count of participants · Participants
Seroconversion Rates for Vaccinia-Specific Neutralizing Antibodies by PRNT
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Seroconversion Rates for Vaccinia-Specific Neutralizing Antibodies by PRNT325328327
SecondarySeroconversion Rates for Vaccinia-Specific Total Antibodies by ELISA

Seroconversion is defined as either the appearance of antibody titers \>= LLOQ for subjects with a titer below LLOQ at baseline, or a doubling (or more) of the antibody titer compared to the baseline titer for subjects with a titer equal or above the LLOQ at baseline. The LLOQ for ELISA is 200.

Time frame:
Two weeks post second vaccination; approximately Week 6.
Reported as:
Count of participants · Participants
Seroconversion Rates for Vaccinia-Specific Total Antibodies by ELISA
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Seroconversion Rates for Vaccinia-Specific Total Antibodies by ELISA323325326
SecondaryPearson Correlation Coefficient Between the log10 Transformed PRNT Titers and the log10 Transformed ELISA Titers

Pearson correlation coefficient calculated on the log10 PRNT vs. ELISA titers at 2 weeks post second vaccination.

Time frame:
Two weeks post second vaccination; approximately Week 6.
Reported as:
Number · Correlation Coefficient
Pearson Correlation Coefficient Between the log10 Transformed PRNT Titers and the log10 Transformed ELISA Titers
Correlation CoefficientGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Pearson Correlation Coefficient Between the log10 Transformed PRNT Titers and the log10 Transformed ELISA Titers0.657 (0.5901 to 0.7142)0.657 (0.5910 to 0.7142)0.656 (0.5893 to 0.7131)
SecondaryOccurrence, Relationship and Intensity of Any Serious Adverse Event (SAE) at Any Time During the Trial

Occurrence is defined as the number of participants who experienced an SAE. Related SAEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where \>= Grade 3 is either Severe or Potentially Life Threatening.

Time frame:
Overall study, ie from first vaccination at Visit 1 through the Follow-up Visit approximately 32 weeks post first vaccination.
Reported as:
Count of participants · Participants
Occurrence, Relationship and Intensity of Any Serious Adverse Event (SAE) at Any Time During the Trial
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Any Serious Adverse Event171
Related Serious Adverse Event000
Serious Adverse Event >= Grade 3051
SecondaryOccurrence, Relationship and Intensity of Any Cardiac Sign or Symptom Indicating a Case of Myo-/Pericarditis at Any Time During the Trial.

Occurrence is defined as the number of participants who experienced an event falling in the system organ class of "Cardiac disorders" per MedDRA version 22.0. Related cardiac signs and symptoms are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where \>= Grade 3 is either Severe or Potentially Life Threatening.

Time frame:
Overall study, ie from first vaccination at Visit 1 through the Follow-up Visit approximately 32 weeks post first vaccination.
Reported as:
Count of participants · Participants
Occurrence, Relationship and Intensity of Any Cardiac Sign or Symptom Indicating a Case of Myo-/Pericarditis at Any Time During the Trial.
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Any Cardiac Sign or Symptom121
Any Related Cardiac Sign or Symptom000
Any Cardiac Sign or Symptom >=Grade 3000
SecondaryOccurrence of Any Grade 3 or 4 Unsolicited AEs Probably, Possibly or Definitely Related to the Trial Vaccine

Related AEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where Grade 3 is Severe and Grade 4 is Potentially Life Threatening.

Time frame:
Within 28 days (and up to 35 days) after each vaccination, ie, from Visit 1 to Visit 3 for the first vaccination and from Visit 3 to Visit 5 for the second vaccination based on the protocol scheduled visits.
Reported as:
Count of participants · Participants
Occurrence of Any Grade 3 or 4 Unsolicited AEs Probably, Possibly or Definitely Related to the Trial Vaccine
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Occurrence of Any Grade 3 or 4 Unsolicited AEs Probably, Possibly or Definitely Related to the Trial Vaccine201
SecondaryOccurrence, Relationship and Intensity of Unsolicited AEs

Occurrence is defined as the number of participants who experienced an unsolicited AE. Related unsolicited AEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, published September 2007, where \>= Grade 3 is either Severe or Potentially Life Threatening.

Time frame:
Within 28 days (and up to 35 days) after each vaccination, ie, from Visit 1 to Visit 3 for the first vaccination and from Visit 3 to Visit 5 for the second vaccination based on the protocol scheduled visits.
Reported as:
Count of participants · Participants
Occurrence, Relationship and Intensity of Unsolicited AEs
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Any Unsolicited AE8811098
Any Related Unsolicited AE333837
Any Unsolicited AE >= Grade 3687
SecondaryOccurrence and Intensity of Solicited Local AEs (Redness, Swelling, Induration, Pruritus and Pain).

Occurrence is defined as the number of participants who experienced a solicited local AE. Intensity is defined per the protocol for each local event type. For injection site erythema, swelling, and induration the intensity is graded based on the maximum diameter as Grade 1: \< 30mm, Grade 2: \>= 30 - \< 100mm, Grade 3: \>= 100mm. Intensity for pruritis is defined as Grade 1: mild, Grade 2: moderate, Grade 3: severe. Intensity for injection site pain is defined as Grade 1: Painful on touch, Grade 2: Painful when moving the limb, Grade 3: Spontaneously painful/prevents normal activity. If a participant experienced the local event after both vaccinations, the maximum intensity is presented.

Time frame:
During the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits.
Reported as:
Count of participants · Participants
Occurrence and Intensity of Solicited Local AEs (Redness, Swelling, Induration, Pruritus and Pain).
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Any Solicited Local AEs338348344
Any Redness271283272
Redness Grade 18411087
Redness Grade 2143131156
Redness Grade 3444229
Any Swelling215233236
Swelling Grade 188121118
Swelling Grade 211087106
Swelling Grade 3172512
Any Induration215226229
Induration Grade 198126123
Induration Grade 210692100
Induration Grade 31186
Any Pruritis210230198
Pruritis Grade 1160181159
Pruritis Grade 2404229
Pruritis Grade 310710
Any Injection Site Pain325330329
Injection Site Pain Grade 1118112124
Injection Site Pain Grade 2161173162
Injection Site Pain Grade 3464543
SecondaryDuration of Solicited Local AEs (Redness, Swelling, Induration, Pruritus and Pain).

Number of days from the start of the local event to resolution. If a participant experienced the local event after both vaccinations, the longer duration is presented. Subjects who had a missing resolution date for the event are not included in the analysis.

Time frame:
Starting during the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie, Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits, through resolution.
Reported as:
Mean · Days
Duration of Solicited Local AEs (Redness, Swelling, Induration, Pruritus and Pain).
DaysGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Redness7.1 ± 6.536.5 ± 5.066.6 ± 5.39
Swelling6.7 ± 6.476 ± 5.045.9 ± 4.52
Induration18 ± 24.0413.9 ± 13.1215 ± 15.01
Pruritis5 ± 5.74.4 ± 3.244.4 ± 3.87
Pain6.9 ± 4.417.1 ± 4.446.7 ± 3.64
SecondaryOccurrence, Relationship, and Intensity of Solicited General AEs (Pyrexia, Headache, Myalgia, Nausea, Fatigue and Chills).

Occurrence is defined as the number of participants who experienced a solicited general AE. Related solicited general AEs are defined as those for which causality to trial vaccine was considered possible, probable, definite, or was missing. Intensity is defined per the protocol for each general event type. For pyrexia (increased body temperature) grading is defined as Grade 1: ≥ 99.5 - \< 100.4°F (≥ 37.5 - \< 38.0°C), Grade 2:≥ 100.4 - \< 102.2°F (≥ 38.0 - \< 39.0°C), Grade 3:≥ 102.2 - \< 104°F (≥ 39.0 - \< 40.0°C), and Grade 4: ≥ 104°F (≥ 40.0°C). Intensity for headache, myalgia, nausea, fatigue and chills is defined as Grade 1: mild, Grade 2: moderate, Grade 3: severe. If a participant experienced the general event after both vaccinations, the maximum intensity is presented.

Time frame:
During the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits.
Reported as:
Count of participants · Participants
Occurrence, Relationship, and Intensity of Solicited General AEs (Pyrexia, Headache, Myalgia, Nausea, Fatigue and Chills).
ParticipantsGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Any Solicited General AEs253267266
Any Related Solicited General AEs246256252
Any Pyrexia476063
Pyrexia Grade 1394849
Pyrexia Grade 27813
Pyrexia Grade 3141
Pyrexia Grade 4000
Any Related Pyrexia475755
Any Headache146157155
Headache Grade 196102120
Headache Grade 2364425
Headache Grade 3141110
Any Related Headache140145145
Any Myalgia166173175
Myalgia Grade 1115116116
Myalgia Grade 2384739
Myalgia Grade 3131020
Any Related Myalgia159167167
Any Nausea758178
Nausea Grade 1535654
Nausea Grade 2161918
Nausea Grade 3666
Any Related Nausea737367
Any Fatigue140171171
Fatigue Grade 18211199
Fatigue Grade 2434758
Fatigue Grade 3151314
Any Related Fatigue135163161
Any Chills585457
Chills Grade 1432838
Chills Grade 2102213
Chills Grade 3546
Any Related Chills555053
SecondaryDuration of Solicited General AEs (Pyrexia [Body Temperature Increase], Headache, Myalgia, Nausea, Fatigue and Chills)

Number of days from the start of the general event to resolution. If a participant experienced the general event after both vaccinations, the longer duration is presented. Subjects who had a missing resolution date for the event are not included in the analysis.

Time frame:
Starting during the 8 day period (day of vaccination and the following 7 days) after each vaccination, ie, Days 1-8 for the first vaccination and Days 28-35 for the second vaccination based on the protocol scheduled visits, through resolution.
Reported as:
Mean · Days
Duration of Solicited General AEs (Pyrexia [Body Temperature Increase], Headache, Myalgia, Nausea, Fatigue and Chills)
DaysGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Pyrexia2.3 ± 1.871.9 ± 1.911.9 ± 1.92
Headache3.2 ± 2.853.1 ± 2.493.2 ± 3.59
Myalgia4.1 ± 2.84 ± 3.274.1 ± 3.3
Nausea2.6 ± 2.982.7 ± 2.762.7 ± 2.5
Fatigue3.9 ± 5.163.1 ± 2.73.6 ± 3.57
Chills2.3 ± 2.012.3 ± 2.712.3 ± 2.19

Adverse events

Collected over Overall study, ie, from first vaccination at Visit 1 through the Follow-up Visit approximately 32 weeks post first vaccination.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
GP 1: Two Doses of FD MVA-BN--Lot 10/377 (0%)1/377 (0.3%)347/377 (92%)
GP 2: Two Doses of FD MVA-BN--Lot 22/375 (0.5%)7/375 (1.9%)353/375 (94.1%)
GP 3: Two Doses of FD MVA-BN--Lot 30/377 (0%)1/377 (0.3%)349/377 (92.6%)
Most frequent serious events
Most frequent serious events
EventGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
DeathGeneral disorders0/3772/3750/377
ColitisGastrointestinal disorders0/3771/3750/377
Foot deformityMusculoskeletal and connective tissue disorders0/3771/3750/377
Groin abscessInfections and infestations0/3771/3750/377
Abortion spontaneousPregnancy, puerperium and perinatal conditions0/3771/3750/377
Panic attackPsychiatric disorders0/3771/3750/377
Alcoholic pancreatitisGastrointestinal disorders0/3770/3751/377
DepressionPsychiatric disorders1/3770/3750/377
Most frequent other events
Showing 10 of 12
Most frequent other events
EventGP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3
Injection site painGeneral disorders325/377330/375329/377
Injection site erythemaGeneral disorders271/377283/375272/377
Injection site swellingGeneral disorders215/377233/375236/377
Injection site pruritisGeneral disorders210/377230/375198/377
Injection site indurationGeneral disorders215/377226/375229/377
MyalgiaMusculoskeletal and connective tissue disorders166/377173/375175/377
FatigueGeneral disorders140/377171/375171/377
HeadacheNervous system disorders146/377157/375155/377
NauseaGastrointestinal disorders75/37781/37578/377
PyrexiaGeneral disorders47/37760/37563/377

Baseline characteristics

The Full Analysis Set includes all subjects who were randomized and received at least one dose of trial vaccine, regardless of the occurrence of protocol deviations.

Age, Categorical
Age, Categorical(Participants)GP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3Total
<=18 years0000
Between 18 and 65 years3773753771129
>=65 years0000
Age, Continuous
Age, Continuous(years)GP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3Total
Mean30.7 ± 7.3130.6 ± 7.2930.7 ± 7.5030.7 ± 7.36
Sex: Female, Male
Sex: Female, Male(Participants)GP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3Total
Female210213207630
Male167162170499
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)GP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3Total
Hispanic or Latino28202573
Not Hispanic or Latino3483543491051
Unknown or Not Reported1135
Race (NIH/OMB)
Race (NIH/OMB)(Participants)GP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3Total
American Indian or Alaska Native2248
Asian17131343
Native Hawaiian or Other Pacific Islander1102
Black or African American585559172
White292295293880
More than one race0000
Unknown or Not Reported79824
Region of Enrollment
Region of Enrollment(participants)GP 1: Two Doses of FD MVA-BN--Lot 1GP 2: Two Doses of FD MVA-BN--Lot 2GP 3: Two Doses of FD MVA-BN--Lot 3Total
United States3773753771129
08

Study locations

12 sites
  • University of Alabama at Birmingham
    Birmingham, Alabama 35294, United States
  • Optimal Research, LLC (Synexus)
    Melbourne, Florida 32934, United States
  • Optimal Research, LLC (Synexus)
    Peoria, Illinois 61614, United States
  • University of Iowa
    Iowa City, Iowa 52242, United States
  • University of Kentucky Healthcare Chandler Hospital
    Lexington, Kentucky 40536, United States
  • Optimal Research, LLC (Synexus)
    Rockville, Maryland 20850, United States
  • Saint Louis University
    Saint Louis, Missouri 63104, United States
  • Washington University School of Medicine
    Saint Louis, Missouri 63110, United States
  • Rochester Clinical Research, Inc.
    Rochester, New York 14609, United States
  • M3 Wake Research, Inc.
    Raleigh, North Carolina 27612, United States
  • Lynn Health Science Institute
    Oklahoma City, Oklahoma 73112, United States
  • Omega Medical Research
    Warwick, Rhode Island 02886, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jun 2019 to primary completion in Jan 2020, 6 months.

Results were first posted in May 2021, 1 year 4 months after primary completion.

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

Registered
Oct 5, 2018
First posted
Oct 9, 2018
StartActual
Jun 19, 2019
Primary completionActual
Jan 6, 2020
CompletionActual
Jun 22, 2020
Results first posted
May 27, 2021
Last update
May 27, 2021
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 May 27, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03699124
Lead sponsor
Bavarian Nordic
Collaborators
Biomedical Advanced Research and Development Authority
Responsible party
Sponsor
First posted
Oct 9, 2018
Start date
Jun 19, 2019
Primary completion
Jan 6, 2020
Completion
Jun 22, 2020
Results posted
May 27, 2021
Last update
May 27, 2021

Study contacts

Edgar T Overton, MD
principal investigator · University of Alabama at Birmingham

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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