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TBE vaccine

Phase 3

Tick-Borne Encephalitis | Monoclonal antibody | Infectious Disease |Pfizer, Inc.|Last Updated: Nov 22, 2023

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment165

FDA Designations

No designations recorded

Clinical trial landscape

TBE vaccine · 1 trial · 1 indication

Phase 3 1
NCT04648241Study to Evaluate the Immunogenicity, Safety, and Tolerability of a Tick-Borne Encephalitis (TBE) Vaccine in Healthy Japanese Participants 1 Year of Age and OlderTick-Borne Encephalitis
COMPLETED165 Analytics
PHASE3COMPLETED
Study to Evaluate the Immunogenicity, Safety, and Tolerability of a Tick-Borne Encephalitis (TBE) Vaccine in Healthy Japanese Participants 1 Year of Age and Older
Tick-Borne EncephalitisUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Seropositive Participants at 4 Weeks After Dose 3
4 weeks after Dose 3

Seropositivity rate based on the immune response was determined by neutralization test (NT). Participants who achieved tick-borne encephalitis virus (TBEV) NT titers \>=1: 10 were considered as seropositive. Exact 2-sided 95% confidence interval (CI) based on the Clopper and Pearson method was presented.

Percentage of Participants With Local Reactions (LR) Within 7 Days After Dose 1
Within 7 days after Dose 1

LR:participant or legally acceptable representative/parent/legal guardian using an electronic diary (e-diary). LR included redness, swelling and pain at injection site. Redness and swelling were measured using measuring device units. 1 measuring device unit =0.5 centimeter(cm). Redness and swelling were graded as: for participants \>=12 years of age, mild(greater than\[\>\] 2.0 to 5.0 cm), moderate(\>5.0 to 10.0 cm) and severe (\>10.0 cm); for participants less than (\<)12 years of age, mild(\>0 to 2.0 cm), moderate(\>2.0 to7.0 cm) and severe(\>7.0 cm). Pain at the injection site was graded as: for participants \>2 years of age, mild(does not interfere with activity), moderate(interferes with activity) and severe(prevents daily activity); for participants less than or equal to (\<=)2 years of age, mild(hurts if gently touched) moderate(hurts if gently touched with crying) and severe(causes limitation of limb movement). Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Local Reactions Within 7 Days After Dose 2
Within 7 days after Dose 2

Local reactions were collected by participant or legally acceptable representative/parent/legal guardian using an e-diary. Local reactions included redness, swelling and pain at the injection site. Redness and swelling were measured using measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as: for participants \>=12 years of age, mild (\> 2.0 to 5.0 cm), moderate (\>5.0 to 10.0 cm) and severe (\>10.0 cm); for participants \<12 years of age, mild (\>0 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at the injection site was graded as: for participants \>2 years of age, mild (does not interfere with activity), moderate (interferes with activity) and severe (prevents daily activity); for participants \<=2 years of age, mild (hurts if gently touched) moderate (hurts if gently touched with crying) and severe (causes limitation of limb movement). Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Local Reactions Within 7 Days After Dose 3
Within 7 days after Dose 3

Local reactions were collected by participant or legally acceptable representative/parent/legal guardian using an e-diary. Local reactions included redness, swelling and pain at the injection site. Redness and swelling were measured using measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as: for participants \>=12 years of age, mild (\> 2.0 to 5.0 cm), moderate (\>5.0 to 10.0 cm) and severe (\>10.0 cm); for participants \<12 years of age, mild (\>0 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at the injection site was graded as: for participants \>2 years of age, mild (does not interfere with activity), moderate (interferes with activity) and severe (prevents daily activity); for participants \<=2 years of age, mild (hurts if gently touched) moderate (hurts if gently touched with crying) and severe (causes limitation of limb movement). Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Systemic Events (SE) Within 7 Days After Dose 1
Within 7 days after Dose 1

SE:participants or legally acceptable representative/parent/legal guardian using e-diary \& included fever:temperature \>=37.5 degree Celsius(C)\&categorized as 37.5to38.4, 38.5 to 38.9,39.0 to 40.0,\>40.0 degree C.Fatigue, headache, muscle pain, joint pain: mild(didn't interfere with activity), moderate(some interference with activity), severe(prevented daily activity). Vomiting: mild(1-2 times in 24 hours\[hrs\]), moderate(\>2 times in 24hrs), severe(required intravenous hydration). Diarrhea: mild(2-3 loose stools in 24hrs), moderate(4-5 loose stools in 24hrs), severe(6 or more loose stools in 24hrs). Decreased appetite:mild(decreased interest in eating),moderate(decreased oral intake), severe(refusal to feed).Drowsiness: mild(Increased sleeping bouts),moderate(slightly subdued interfering with daily activity),severe(disabling not interested in usual daily activity).Irritability:mild(easily consolable), moderate(required increased attention),severe(inconsolable, crying can't be comforted).

Percentage of Participants With Systemic Events Within 7 Days After Dose 2
Within 7 days after Dose 2

SE:participants or a legally acceptable representative/parent/legal guardian using e-diary and included fever:temperature \>=37.5 degreeC \& categorized as 37.5 to 38.4,38.5 to 38.9,39.0 to 40.0,\>40.0 degreeC.Fatigue, headache, muscle pain, joint pain: mild(didn't interfere with activity),moderate(some interference with activity), severe(prevented daily activity). Vomiting: mild(1-2 times in 24 hours\[hrs\]), moderate(\>2 times in 24hrs),severe(required intravenous hydration).Diarrhea: mild(2-3 loose stools in 24hrs), moderate(4-5 loose stools in 24hrs), severe(6 or more loose stools in 24hrs). Decreased appetite: mild(decreased interest in eating), moderate(decreased oral intake), severe(refusal to feed). Drowsiness: mild(Increased sleeping bouts), moderate(slightly subdued interfering with daily activity), severe(disabling not interested in usual daily activity).Irritability: mild(easily consolable), moderate(required increased attention),severe(inconsolable, crying can't be comforted).

Percentage of Participants With Systemic Events Within 7 Days After Dose 3
Within 7 days after Dose 3

Systemic events collected by participant using e-diary and included fever defined as temperature \>=37.5 degree C and categorized as 37.5 to 38.4, 38.5 to 38.9, 39.0 to 40.0, \>40.0 degree C. Fatigue, headache, muscle pain, joint pain: mild(didn't interfere with activity), moderate(some interference with activity), severe(prevented daily activity). Vomiting: mild(1-2 times in 24 hours\[hrs\]), moderate(\>2 times in 24hrs), severe(required intravenous hydration). Diarrhea: mild(2-3 loose stools in 24hrs), moderate(4-5 loose stools in 24hrs), severe(6 or more loose stools in 24hrs). Decreased appetite: mild(decreased interest in eating), moderate(decreased oral intake), severe(refusal to feed). Drowsiness: mild(Increased sleeping bouts), moderate(slightly subdued interfering with daily activity), severe(disabling not interested in usual daily activity). Irritability: mild(easily consolable), moderate(required increased attention), severe(inconsolable, crying can't be comforted).

Percentage of Participants With Adverse Events (AEs) Within 1 Month After Dose 1
Within 1 month after Dose 1

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether considered related to the study intervention. Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Adverse Events (AEs) Within 1 Month After Dose 2
Within 1 month after Dose 2

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether considered related to the study intervention. Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Adverse Events (AEs) Within 1 Month After Dose 3
Within 1 month after Dose 3

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether considered related to the study intervention. Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Adverse Events (AEs) Within 1 Month After Any Dose
Within 1 month after any Dose

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether considered related to the study intervention. Exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Percentage of Participants With Serious Adverse Events (SAEs) Throughout the Study
From Day 1 up to end of study (up to approximately 13 months)

An SAE was defined as any untoward medical occurrence that, at any dose that resulted in death; was life-threatening (immediate risk of death); required inpatient hospitalization or prolongation of existing hospitalization; resulted in persistent disability/incapacity (substantial disruption of the ability to conduct normal life functions); resulted in congenital anomaly/birth defect or that is considered to be an important medical event. Percentage of participants with SAEs and the exact 2-sided 95% CI based on the Clopper and Pearson method was presented.

Secondary Endpoints

Percentage of Seropositive Participants at 4 Weeks After Dose 2
4 weeks after Dose 2
Geometric Mean Titers (GMTs) of TBEV Neutralizing Antibody Titers at 4 Weeks After Dose 2 and Dose 3
4 weeks after Dose 2 and Dose 3
Geometric Mean Fold Rise (GMFR) of TBEV Neutralizing Antibody Titers at 4 Weeks After Dose 2 as Compared to Baseline
From Baseline to 4 weeks after Dose 2
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
≥16 Years OldEXPERIMENTALTBE vaccine 0.5 mL (intramuscular injection).
1 to <16 Years OldEXPERIMENTALTBE vaccine 0.25mL (intramuscular injection).

Interventions

NameTypeDescription
TBE vaccine 0.5 mLBIOLOGICALTBE vaccine 0.5 mL (intramuscular injection).
TBE vaccine 0.25 mLBIOLOGICALTBE vaccine 0.25 mL (intramuscular injection).
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Eligibility Criteria

Age Range1 Year to N/A
SexALL
Healthy VolunteersYes
Study Sites6

Inclusion Criteria: * Japanese male or female participants ≥1 years old at Visit 1. * Participants and/or a legally acceptable representative/parent/legal guardian are willing and able to comply with all scheduled visits, vaccination plan, and other study procedures including completion of the e-di...

Countries:Japan
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Frequently asked questions about TBE vaccine

What is TBE vaccine used for?

TBE vaccine is used for the prevention of Tick-Borne Encephalitis, a viral infection transmitted by tick bites. It is being developed for use in healthy individuals, including children as young as 1 year of age, to stimulate an immune response against the TBE virus.

Who makes TBE vaccine?

TBE vaccine is being developed by Pfizer, Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker symbol PFE. The company is conducting clinical trials to evaluate the vaccine's immunogenicity, safety, and tolerability.

What phase is TBE vaccine in?

TBE vaccine is in Phase 3 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. The Phase 3 trial has been completed, and the vaccine remains under evaluation for its safety and immune response.

What clinical trials is TBE vaccine in?

TBE vaccine has one completed Phase 3 clinical trial, identified as NCT04648241. This study evaluated the immunogenicity, safety, and tolerability of the vaccine in healthy Japanese participants aged 1 year and older. The trial enrolled 165 participants and was conducted in Japan.

Is TBE vaccine a monoclonal antibody?

TBE vaccine is classified as a monoclonal antibody modality, though it is intended to function as a vaccine to prevent Tick-Borne Encephalitis. It is designed to elicit an immune response rather than to directly neutralize the virus as a therapeutic antibody would.