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BNT165b1

Phase 1

Malaria | Monoclonal antibody | Infectious Disease |BioNTech SE|Last Updated: Sep 3, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment60

FDA Designations

No designations recorded

Clinical trial landscape

BNT165b1 · 1 trial · 1 indication

Phase 1 1
NCT05581641Safety and Immune Responses After Vaccination With an Investigational RNA-based Vaccine Against MalariaMalaria
COMPLETED60 Analytics
PHASE1COMPLETED
Safety and Immune Responses After Vaccination With an Investigational RNA-based Vaccine Against Malaria
MalariaUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants With Solicited Local Reactions
Up to 7 days post any vaccination, and up to 7 days post each vaccination dose (i.e., post Dose 1 [at Day 8], Dose 2 [at Day 64] and Dose 3 [at Day 190])

A solicited reaction was defined as an adverse reaction observed and reported under the conditions (symptom and onset) and pre-listed (that is, solicited) in the e-diary. Solicited local reactions included: pain at the injection site, erythema/redness, and induration/swelling. The intensity of AEs was graded by the investigator. Grades were defined as: Grade 1 - Mild; does not interfere with the trial participant's usual function; Grade 2 - Moderate; interferes to some extent with the trial participant's usual function; Grade 3 - Severe; interferes significantly with the trial participant's usual function and Grade 4 - Potentially life-threatening; life-threatening consequences, urgent intervention required. Participants may have been counted more than once if they reported multiple episodes of the event for the specified doses.

Number of Participants With Solicited Systemic Reactions
Up to 7 days post any vaccination, and up to 7 days post each vaccination dose (i.e., post Dose 1 [at Day 8], Dose 2 [at Day 64] and Dose 3 [at Day 190])

A solicited reaction was defined as an adverse reaction observed and reported under the conditions (symptom and onset) pre-listed (i.e., solicited) in the e-diary. Solicited systemic reactions included: vomiting, diarrhea, headache, fatigue, myalgia, arthralgia, chills, and fever. The intensity of AEs was graded by the investigator. Grades were defined as: Grade 1 - Mild; does not interfere with the trial participant's usual function; Grade 2 - Moderate; interferes to some extent with the trial participant's usual function; Grade 3 - Severe; interferes significantly with the trial participant's usual function and Grade 4 - Potentially life-threatening; life-threatening consequences, urgent intervention required. Participants may have been counted more than once if they reported multiple episodes of the event for the specified doses.

Number of Participants With Adverse Events (AEs)
Up to 28 days post any vaccination, and up to 28 days post each vaccination dose (i.e., post Dose 1 [at Day 29], Dose 2 [at Day 85] and Dose 3 [at Day 211])

An AE was defined as any untoward medical occurrence in a participant administered with a pharmaceutical product, and which did not necessarily have a causal relationship with this treatment. The intensity of AEs was graded by the investigator. Grades were defined as: Grade 1 - Mild; does not interfere with the trial participant's usual function; Grade 2 - Moderate; interferes to some extent with the trial participant's usual function; Grade 3 - Severe; interferes significantly with the trial participant's usual function and Grade 4 - Potentially life-threatening; life-threatening consequences, urgent intervention required. Participants may have been counted more than once if they reported multiple episodes of the event for the different doses.

Number of Participants With Serious Adverse Events (SAEs)
From Day 1 up to 24 weeks after Dose 3 (i.e., up to Day 351)

An SAE was defined as any untoward medical occurrence that, at any dose, resulted in death and was life-threatening. It also included any event requiring hospitalization or prolongation of existing hospitalization, resulted in persistent disability/incapacity, caused a congenital anomaly or birth defect, or any other event determined as SAE as per medical or scientific judgment.

Number of Participants With Medically Attended Adverse Events (MAAEs)
Up to 28 days post any vaccination, and up to 28 days post each vaccination dose (i.e., post Dose 1 [at Day 29], Dose 2 [at Day 85], Dose 3 [at Day 211])

MAAE was defined as an AE for which the participants received medical attention defined as hospitalization, or an otherwise unscheduled visit to or from medical personnel for any reason, including emergency room visits. Participants may have been counted more than once if they reported multiple episodes of the event for the different doses.

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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Cohort 1: BNT165b1: 3 Micrograms (mcg)EXPERIMENTALParticipants received 3 intramuscular injections of 3 mcg of BNT165b1 vaccine, one each at Days 1, 57 and 183, respectively.
Cohort 2: BNT165b1: 10 mcgEXPERIMENTALParticipants received 3 intramuscular injections of 10 mcg of BNT165b1 vaccine, one each at Days 1, 57 and 183, respectively.
Cohort 3: BNT165b1: 30 mcgEXPERIMENTALParticipants received 3 intramuscular injections of 30 mcg of BNT165b1 vaccine, one each at Days 1, 57 and 183, respectively.
PlaceboPLACEBO_COMPARATORParticipants received 3 intramuscular injections of matching placebo of BNT165b vaccine, one each at Days 1, 57 and 183, respectively.

Interventions

NameTypeDescription
BNT165b1BIOLOGICALRNA vaccine for active immunization against malaria administered as intramuscular injection.
PlaceboOTHERPlacebo matched to RNA vaccine administered as intramuscular injection.
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites5

Inclusion Criteria: * Had given informed consent by signing and dating the informed consent form (ICF) before initiation of any trial-specific procedures * Were willing and able to comply with scheduled visits, treatment schedule, laboratory tests, lifestyle restrictions (e.g., to follow good pract...

Countries:United States
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Competitive Landscape -Malaria 6 trials

Frequently asked questions about BNT165b1

What is BNT165b1 used for?

BNT165b1 is an investigational monoclonal antibody being developed for the prevention of malaria. It is currently in Phase 1 clinical development, meaning it has not yet been approved for use. The drug is being studied for its safety and ability to generate immune responses against malaria.

Who makes BNT165b1?

BNT165b1 is being developed by BioNTech SE, a biotechnology company publicly traded under the ticker symbol BNTX. The company is conducting clinical research to evaluate the drug's safety and immunogenicity in healthy volunteers.

What phase is BNT165b1 in?

BNT165b1 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The Phase 1 trial has been completed, and the drug remains in early-stage clinical research for malaria prevention.

What clinical trials is BNT165b1 in?

BNT165b1 has one completed clinical trial, NCT05581641, titled 'Safety and Immune Responses After Vaccination With an Investigational RNA-based Vaccine Against Malaria.' This Phase 1 study enrolled 60 participants in the United States and was a randomized, double-blind, placebo-controlled trial.

Is BNT165b1 the same as an RNA-based malaria vaccine?

BNT165b1 is described as a monoclonal antibody, while the clinical trial NCT05581641 evaluates an RNA-based vaccine against malaria. The trial title refers to an investigational RNA-based vaccine, and BNT165b1 is the drug being studied in that context.