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Chemoprophylactic Activity of M5717 in PfSPZ Challenge Model

A Phase Ib, Randomized, Double-Blind, Placebo Controlled, Sequential Study of Single Oral Doses of M5717 to Explore the Chemoprophylactic Activity of M5717 in a Controlled PISPZ Challenge Model in Healthy Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04250363
Enrollment
39
Registered
2020-01-31
Start date
2020-02-17
Completion date
2021-08-18
Last updated
2024-05-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

Healthy Participants, M5717, Malaria, Plasmodium falciparum

Brief summary

The main purpose of this study was to assess the chemoprophylactic activity and dose-exposure-response relationship of single oral dose of M5717 administered after direct intravenous inoculation (DVI) of Plasmodium falciparum sporozoite (PfSPZ) challenge in healthy participants.

Interventions

BIOLOGICALPfSPZ Challenge

Participants received 3200 units of Plasmodium falciparum sporozoites by DVI on Day 1.

Participants received single oral dose of placebo matched to M5717 capsule on Day 1.

DRUGM5717 30 mg

Participants received 30 mg single oral dose of M5717 capsule on Day 1.

Participants received 60 mg single oral dose of M5717 capsule on Day 1.

DRUGM5717 80 mg

Participants received 80 mg single oral dose of M5717 capsule on Day 1.

DRUGM5717 100 mg

Participants received 100 mg single oral dose of M5717 capsule on Day 1.

Participants received 200 mg single oral dose of M5717 capsule on Day 1.

DRUGPlacebo

Participants received single oral dose of placebo matched to M5717 capsule on Day 5.

Sponsors

Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Participants who are overtly healthy as determined by medical evaluation, including no clinically significant abnormality identified on physical examination or laboratory evaluation and no active clinically significant disorder, condition, infection or disease that would pose a risk to participant safety or interfere with the study evaluation, procedures or completion * Participants who have a body weight within 50 to 100 kilograms (kg) and body mass index within the range 19.0 to 29.9 kilograms per meter square (kg/m2) (inclusive) * Male participants, during the study intervention period and for at least 120 days after the day of the study intervention dose (covering a full sperm cycle of 90 days starting after 5 half lives of last dose of study intervention: - refrain from donating sperm plus, either - abstain from intercourse with a woman of childbearing potential (WOCBP) or - use a male condom, when having sexual intercourse with a WOCBP, who is not currently pregnant, and advise her to use a highly effective contraceptive method with a failure rate of less than (\<) 1 percent (%) per year, since a condom may break or leak * Female participants who are: - not a WOCBP; - at least 1 year post-menopausal (amenorrhea greater than or equal to \[\>=\] 12 months and follicle-stimulating hormone \[FSH\] \>= 40 milli-international units per milliliter \[mIU/mL\]) at screening; - surgically sterile (bilateral oophorectomy, hysterectomy or bilateral salpingectomy; tubal ligation alone is not sufficient) * Participants who are capable of giving signed informed consent, which includes compliance with the requirements (including mandatory intake of rescue medication to participants who have been administered the investigational Plasmodium falciparum sporozoite challenge) and restrictions listed in the informed consent form (ICF) and this protocol * Other protocol defined inclusion criteria could apply

Exclusion criteria

* Participants with 12-Lead electrocardiogram (ECG) outside normal range (QTcF greater than \[\>\] 450 milli seconds \[ms\], pulse rate \[PR\] \> 215 ms, or QRS \> 120 ms) and deemed clinically relevant by the Investigator * Supine systolic blood pressure \> 140 or \< 90 millimeter of mercury (mmHg), diastolic blood pressure \> 90 or \< 50 mmHg, and pulse rate \> 90 or \< 50 beats per minute (min) at screening and at admission on Day -1 (any abnormal blood pressure or pulse rate results may be repeated once and if the repeat result is within the normal range, it is not considered to have met the exclusion criterion) * Seropositive for human immunodeficiency virus (HIV) I and II antibody or antigen), hepatitis B virus (HBV; hepatitis B surface antigen \[HBsAg\]), or hepatitis C virus (HCV; antibody) tests * Liver function tests above the upper limit of normal (ULN) (\> 3 x ULN) the day before DVI / study intervention administration (Day -1) * History or presence of diagnosed food or known drug allergies (including but not limited to allergy to any of the antimalarial rescue medications to be used in the study), or history of anaphylaxis or other severe allergic reactions * Participant with a whole blood donation or loss of \> 450 mL within 60 days before administration of study drug or unwilling to defer blood donations for 6 months * Other protocol defined

Design outcomes

Primary

MeasureTime frameDescription
Early Liver Stage: Number of Participants Over Time With Positive ParasitemiaEarly Liver Stage: From Day 1 up to Day 28Number of participants with positive parasitemia defined as first positive quantitative polymerase chain reaction (qPCR) outcome equal or greater than 100 asexual parasites per milliliter (mL) of blood within 28 days of PfSPZ challenge.
Late Liver Stage: Number of Participants Over Time With Positive ParasitemiaLate Liver Stage: From Day 5 up to Day 32Number of participants with positive parasitemia defined as first positive quantitative polymerase chain reaction (qPCR) outcome equal or greater than 100 asexual parasites per milliliter (mL) of blood within 28 days of PfSPZ challenge.
Early Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)Early Liver Stage: From Day 1 up to Day 28Time to first positive parasitemia was defined as the time (i.e., number of days) from the PfSPZ DVI (i.e., date of DVI PfSPZ) to the first qPCR outcome greater than or equal to (\>=) 100 asexual parasites per milliliter (mL) of blood.
Late Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)Late Liver Stage: From Day 5 up to Day 32Time to first positive parasitemia was defined as the time (i.e., number of days) from the PfSPZ DVI (i.e., date of DVI PfSPZ) to the first qPCR outcome greater than or equal to (\>=) 100 asexual parasites per milliliter (mL) of blood.
Early Liver Stage: Number of Participants With Documented Blood Stage Parasite GrowthEarly Liver Stage: From Day 1 up to Day 28Documented blood stage parasite growth was defined as an increase of qPCR measured asexual parasites per mL compared to the first parasitemia measurement, within 28 days of PfSPZ DVI.
Late Liver Stage: Number of Participants With Documented Blood Stage Parasite GrowthLate Liver Stage: From Day 5 up to Day 32Documented blood stage parasite growth was defined as an increase of qPCR measured asexual parasites per mL compared to the first parasitemia measurement, within 28 days of PfSPZ DVI.
Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreEarly Liver Stage: At Day 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26 and 28The malaria clinical score consisted of 14 signs/symptoms frequently associated with malaria and graded using a 4-point scale (absent: 0; mild: 1; moderate: 2; severe: 3) and summed to generate a total malaria clinical score (maximum score possible is 42): headache, myalgia (muscle ache), arthralgia (joint ache), fatigue/lethargy, malaise (general discomfort/uneasiness), chills/shivering/rigors, sweating/hot spells, anorexia, nausea, vomiting, abdominal discomfort, fever, tachycardia and hypotension. The minimum score was 0 (no symptoms) and the maximum score was 42 (maximum symptoms). Total scores are reported here.
Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreLate Liver Stage: At Day 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 28, 30 and 32The malaria clinical score consisted of 14 signs/symptoms frequently associated with malaria and graded using a 4-point scale (absent: 0; mild: 1; moderate: 2; severe: 3) and summed to generate a total malaria clinical score (maximum score possible is 42): headache, myalgia (muscle ache), arthralgia (joint ache), fatigue/lethargy, malaise (general discomfort/uneasiness), chills/shivering/rigors, sweating/hot spells, anorexia, nausea, vomiting, abdominal discomfort, fever, tachycardia and hypotension. The minimum score was 0 (no symptoms) and the maximum score was 42 (maximum symptoms). Total scores are reported here.
Dose Exposure Response Relationship of M5717 Assessed by Logistic Regression ModelFrom Day 5 up to Day 32Exposure efficacy relationship was analyzed using logistic regression model. Different exposure matrices (AUC0-24, AUC0-168, AUC0-inf, C24 and C168) were analyzed using logistic regression model.

Secondary

MeasureTime frameDescription
Maximum Observed Blood Concentration (Cmax) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseCmax was obtained directly from the concentration versus time curve.
Blood Concentration at 24 Hours (C24) of M5717At 24 hours post-doseBlood samples for PK analysis of C24 of M5717 was reported.
Blood Concentration at 168 Hours (C168) of M5717At 168 hours post-doseC168 is the calculated blood concentration at 168 hours post-dose at which the measured blood concentration is at or above the Lower Limit of quantification (LLQ).
Time to Reach Maximum Blood Concentration (Tmax) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseTime to reach the maximum blood concentration (Tmax) was obtained directly from the concentration versus time curve.
Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsEarly Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36An adverse event (AE) was defined as any untoward medical occurrence in a participant administered with study drug which does not necessarily had a causal relationship with the treatment. An AE was any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with use of a medicinal product, whether or not considered related to the medicinal product. A serious adverse event (SAE) was an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAE was defined as AEs starting or worsening after the first intake of the study drug. TEAEs included both serious TEAEs and non-serious TEAEs. Treatment-related TEAEs: reasonably related to study intervention.
Elimination Rate Constant (Lambda z) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseElimination rate constant determined from the terminal slope of the log-transformed concentration curve using linear regression on terminal data points of the curve.
Apparent Total Body Clearance From Blood (CL/f) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseClearance of a drug was a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Apparent body clearance of the drug from blood, CL= Dose/AUC0-inf
Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseThe Vz/f was defined as the theoretical volume in which the total amount of required to uniformly distribute to produce the desired plasma concentration. Apparent volume of distribution after oral dose (Vz/F) was influenced by the fraction absorbed. The Vz/f was calculated by dividing the dose with area under the concentration time curve from time zero to infinity multiplied with terminal elimination rate constant Lambda(z). Vz/f=Dose/AUC(0-inf) multiply Lambda(z).
Apparent Terminal Half-life (t1/2) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseTerminal half-life is the time measured for the concentration to decrease by one half. Terminal half-life calculated by natural log 2 divided by lambda z.
Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityEarly Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36Severity of adverse events (AE) were assessed by the investigator per the Qualitative Toxicity Scale. Grade 1= Mild, Grade 2=Moderate, Grade 3=Severe. The number of participants that experienced at least one solicited local TEAE were summarized by grade. The term TEAE is defined as AEs starting or worsening after the first intake of the study drug. TEAEs include both Serious TEAEs and non-serious TEAEs. Number of participants with Grade=1, Grade=2 and 3 were reported.
Number of Participants With Clinically Significant Change From Baseline in Laboratory ValuesEarly Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36Laboratory assessments included hematology, biochemistry, urinalysis, and coagulation. Number of participants with clinically significant changes from baseline in laboratory values which were deemed clinically significant by the investigator were reported.
Number of Participants With Clinically Significant Change From Baseline in Vital SignsEarly Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36Vital signs included oral body temperature, height, weight, systolic blood pressure, diastolic blood pressure, and pulse rate. Number of participants with clinically significant changes from baseline in Vital signs which were deemed clinically significant by the investigator were reported.
Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) FindingsEarly Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36Single 12-lead ECG was obtained as outlined using an ECG machine that automatically calculates the heart rate and measures PR, QRS, and QT intervals. Number of participants with clinically significant changes from baseline in ECG which were deemed clinically significant by the investigator were reported.
Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseAUC0-inf was calculated by combining AUC0-t and AUCextra. AUC extra represents an extrapolated value obtained by Clast/ λz, where Clast is the calculated blood concentration at the last sampling time point at which the measured blood concentration is at or above the Lower Limit of quantification (LLQ) and λz is the apparent terminal rate constant determined by log-linear regression analysis of the measured blood concentrations of the terminal log-linear phase.
Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-doseArea under the blood concentration vs time curve from time zero to the last sampling time t at which the concentration was at or above the lower limit of quantification (LLQ). AUC0-t was to be calculated according to the mixed log-linear trapezoidal rule.
Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12 and 24 hours post-doseAUC from time zero to 24 hours post dose, calculated using the mixed log linear trapezoidal rule (linear up, log down) using the nominal dosing interval.
Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M5717Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120 and 168 hours post-doseAUC from time zero to 168 hours post dose. Calculated using the mixed log linear trapezoidal rule (linear up, log down) using the nominal dosing interval.

Countries

Netherlands

Participant flow

Pre-assignment details

A total of 39 participants (27 participants in early liver stage group and 12 participants in late liver stage group) were enrolled and randomized for treatment at single site in Netherlands.

Participants by arm

ArmCount
Early Liver Stage: Pooled Placebo
Participants received single dose of placebo matched to M5717 capsule on Day 1 after 2 hours of Plasmodium falciparum Sporozoite (PfSPZ) (3200 sporozoites per injection) intravenous (IV) inoculation administration on Day 1.
6
Early Liver Stage: 30 mg M5717
Participants received single dose of M5717 30 mg capsule on Day 1 after 2 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Early Liver Stage: 60 mg M5717
Participants received single dose of M5717 60 mg capsule on Day 1 after 2 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
6
Early Liver Stage: 80 mg M5717
Participants received single dose of M5717 80 mg capsule on Day 1 after 2 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
6
Early Liver Stage: 100 mg M5717
Participants received single dose of M5717 100 mg capsule on Day 1 after 2 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Early Liver Stage: 200 mg M5717
Participants received single dose of M5717 200 mg capsule on Day 1 after 2 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Late Liver Stage: Pooled Placebo
Participants received single dose of placebo matched to M5717 capsule on Day 5 after 96 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Late Liver Stage: 60 mg M5717
Participants received single dose of M5717 60 mg capsule on Day 5 after 96 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Late Liver Stage: 100 mg M5717
Participants received single dose of M5717 100 mg capsule on Day 5 after 96 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Late Liver Stage: 200 mg M5717
Participants received single dose of M5717 200 mg capsule on Day 5 after 96 hours of PfSPZ (3200 sporozoites per injection) IV inoculation administration on Day 1.
3
Total39

Baseline characteristics

CharacteristicLate Liver Stage: 60 mg M5717Late Liver Stage: 100 mg M5717Late Liver Stage: 200 mg M5717TotalEarly Liver Stage: Pooled PlaceboEarly Liver Stage: 30 mg M5717Early Liver Stage: 60 mg M5717Early Liver Stage: 80 mg M5717Early Liver Stage: 100 mg M5717Early Liver Stage: 200 mg M5717Late Liver Stage: Pooled Placebo
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
3 Participants3 Participants3 Participants39 Participants6 Participants3 Participants6 Participants6 Participants3 Participants3 Participants3 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants3 Participants3 Participants38 Participants6 Participants3 Participants5 Participants6 Participants3 Participants3 Participants3 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants0 Participants0 Participants2 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants3 Participants3 Participants35 Participants5 Participants3 Participants6 Participants5 Participants3 Participants2 Participants3 Participants
Sex: Female, Male
Female
1 Participants2 Participants1 Participants11 Participants0 Participants0 Participants2 Participants3 Participants0 Participants0 Participants2 Participants
Sex: Female, Male
Male
2 Participants1 Participants2 Participants28 Participants6 Participants3 Participants4 Participants3 Participants3 Participants3 Participants1 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 30 / 60 / 60 / 30 / 30 / 30 / 30 / 30 / 3
other
Total, other adverse events
5 / 63 / 36 / 66 / 63 / 33 / 33 / 33 / 32 / 32 / 3
serious
Total, serious adverse events
0 / 60 / 30 / 60 / 60 / 30 / 30 / 30 / 30 / 30 / 3

Outcome results

Primary

Dose Exposure Response Relationship of M5717 Assessed by Logistic Regression Model

Exposure efficacy relationship was analyzed using logistic regression model. Different exposure matrices (AUC0-24, AUC0-168, AUC0-inf, C24 and C168) were analyzed using logistic regression model.

Time frame: From Day 5 up to Day 32

Population: PP analysis set included all SAF participants who comply with protocol and meet no criteria that could impact proper evaluation of key objectives of study. This data was analyzed together jointly across cohorts and hence model parameter were based on complete data set as opposed to cohort by cohort.

ArmMeasureValue (NUMBER)
Early Liver Stage: Pooled PlaceboDose Exposure Response Relationship of M5717 Assessed by Logistic Regression Model1.27 slope
Early Liver Stage: 30 mg M5717Dose Exposure Response Relationship of M5717 Assessed by Logistic Regression Model1.43 slope
Early Liver Stage: 60 mg M5717Dose Exposure Response Relationship of M5717 Assessed by Logistic Regression Model1.44 slope
Early Liver Stage: 80 mg M5717Dose Exposure Response Relationship of M5717 Assessed by Logistic Regression Model0.800 slope
Early Liver Stage: 100 mg M5717Dose Exposure Response Relationship of M5717 Assessed by Logistic Regression Model2.45 slope
p-value: 0.0028495% CI: [1.85, 10.6]Regression, Logistic
p-value: 0.0036795% CI: [2, 14.8]Regression, Logistic
p-value: 0.013795% CI: [1.9, 23.7]Regression, Logistic
p-value: 0.0034995% CI: [1.47, 4.48]Regression, Logistic
p-value: 0.0059495% CI: [3.19, 129]Regression, Logistic
Primary

Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical Score

The malaria clinical score consisted of 14 signs/symptoms frequently associated with malaria and graded using a 4-point scale (absent: 0; mild: 1; moderate: 2; severe: 3) and summed to generate a total malaria clinical score (maximum score possible is 42): headache, myalgia (muscle ache), arthralgia (joint ache), fatigue/lethargy, malaise (general discomfort/uneasiness), chills/shivering/rigors, sweating/hot spells, anorexia, nausea, vomiting, abdominal discomfort, fever, tachycardia and hypotension. The minimum score was 0 (no symptoms) and the maximum score was 42 (maximum symptoms). Total scores are reported here.

Time frame: Early Liver Stage: At Day 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26 and 28

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study. Here, Number analyzed signifies those participants who were evaluable for this outcome at specified timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 131.7 score on a ScaleStandard Deviation 1.86
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 151.5 score on a ScaleStandard Deviation 2.07
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.0 score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 144.5 score on a ScaleStandard Deviation 3
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.5 score on a ScaleStandard Deviation 0.71
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 162.0 score on a ScaleStandard Deviation 1.41
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.0 score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 181.0 score on a ScaleStandard Deviation 1.41
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 182.3 score on a ScaleStandard Deviation 4.04
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.7 score on a ScaleStandard Deviation 1.15
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 201.0 score on a ScaleStandard Deviation 1.73
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.7 score on a ScaleStandard Deviation 1.15
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 172.0 score on a ScaleStandard Deviation 3.46
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.3 score on a ScaleStandard Deviation 0.52
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 80 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.2 score on a ScaleStandard Deviation 0.41
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 100 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.3 score on a ScaleStandard Deviation 0.58
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.1 score on a ScaleStandard Deviation 0.3
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.0 score on a ScaleStandard Deviation 0
Early Liver Stage: 200 mg M5717Early Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 score on a ScaleStandard Deviation 0
Primary

Early Liver Stage: Number of Participants Over Time With Positive Parasitemia

Number of participants with positive parasitemia defined as first positive quantitative polymerase chain reaction (qPCR) outcome equal or greater than 100 asexual parasites per milliliter (mL) of blood within 28 days of PfSPZ challenge.

Time frame: Early Liver Stage: From Day 1 up to Day 28

Population: Per-protocol (PP) analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Number of Participants Over Time With Positive Parasitemia6 Participants
Early Liver Stage: 30 mg M5717Early Liver Stage: Number of Participants Over Time With Positive Parasitemia3 Participants
Early Liver Stage: 60 mg M5717Early Liver Stage: Number of Participants Over Time With Positive Parasitemia2 Participants
Early Liver Stage: 80 mg M5717Early Liver Stage: Number of Participants Over Time With Positive Parasitemia1 Participants
Early Liver Stage: 100 mg M5717Early Liver Stage: Number of Participants Over Time With Positive Parasitemia0 Participants
Early Liver Stage: 200 mg M5717Early Liver Stage: Number of Participants Over Time With Positive Parasitemia0 Participants
Primary

Early Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth

Documented blood stage parasite growth was defined as an increase of qPCR measured asexual parasites per mL compared to the first parasitemia measurement, within 28 days of PfSPZ DVI.

Time frame: Early Liver Stage: From Day 1 up to Day 28

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth5 Participants
Early Liver Stage: 30 mg M5717Early Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth2 Participants
Early Liver Stage: 60 mg M5717Early Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth2 Participants
Early Liver Stage: 80 mg M5717Early Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth1 Participants
Early Liver Stage: 100 mg M5717Early Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth0 Participants
Early Liver Stage: 200 mg M5717Early Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth0 Participants
Primary

Early Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)

Time to first positive parasitemia was defined as the time (i.e., number of days) from the PfSPZ DVI (i.e., date of DVI PfSPZ) to the first qPCR outcome greater than or equal to (\>=) 100 asexual parasites per milliliter (mL) of blood.

Time frame: Early Liver Stage: From Day 1 up to Day 28

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study. Here, Overall Number of Participants Analyzed signifies those participants who had positive parasitemia.

ArmMeasureValue (MEDIAN)
Early Liver Stage: Pooled PlaceboEarly Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)10.0 Days
Early Liver Stage: 30 mg M5717Early Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)15.0 Days
Early Liver Stage: 60 mg M5717Early Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)22.0 Days
Early Liver Stage: 80 mg M5717Early Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)24.0 Days
Primary

Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical Score

The malaria clinical score consisted of 14 signs/symptoms frequently associated with malaria and graded using a 4-point scale (absent: 0; mild: 1; moderate: 2; severe: 3) and summed to generate a total malaria clinical score (maximum score possible is 42): headache, myalgia (muscle ache), arthralgia (joint ache), fatigue/lethargy, malaise (general discomfort/uneasiness), chills/shivering/rigors, sweating/hot spells, anorexia, nausea, vomiting, abdominal discomfort, fever, tachycardia and hypotension. The minimum score was 0 (no symptoms) and the maximum score was 42 (maximum symptoms). Total scores are reported here.

Time frame: Late Liver Stage: At Day 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 28, 30 and 32

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study. Here, Number analyzed signifies those participants who were evaluable for this outcome at specified timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 320.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 171.0 Score on a Scale
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 161.5 Score on a ScaleStandard Deviation 2.12
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 151.5 Score on a ScaleStandard Deviation 2.12
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: Pooled PlaceboLate Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 300.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 230.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 300.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 320.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 30 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 210.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 230.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 320.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 300.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 210.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 60 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 320.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 170.7 Score on a ScaleStandard Deviation 1.15
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 200.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 240.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 60.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 70.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 80.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 90.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 100.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 110.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 120.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 130.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 140.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 150.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 160.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 180.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 190.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 210.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 220.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 230.3 Score on a ScaleStandard Deviation 0.58
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 260.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 280.0 Score on a ScaleStandard Deviation 0
Early Liver Stage: 80 mg M5717Late Liver Stage: Clinical Symptoms of Malaria Assessed Using Malaria Clinical ScoreAt Day 300.00 Score on a ScaleStandard Deviation 0
Primary

Late Liver Stage: Number of Participants Over Time With Positive Parasitemia

Number of participants with positive parasitemia defined as first positive quantitative polymerase chain reaction (qPCR) outcome equal or greater than 100 asexual parasites per milliliter (mL) of blood within 28 days of PfSPZ challenge.

Time frame: Late Liver Stage: From Day 5 up to Day 32

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboLate Liver Stage: Number of Participants Over Time With Positive Parasitemia3 Participants
Early Liver Stage: 30 mg M5717Late Liver Stage: Number of Participants Over Time With Positive Parasitemia0 Participants
Early Liver Stage: 60 mg M5717Late Liver Stage: Number of Participants Over Time With Positive Parasitemia0 Participants
Early Liver Stage: 80 mg M5717Late Liver Stage: Number of Participants Over Time With Positive Parasitemia0 Participants
Primary

Late Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth

Documented blood stage parasite growth was defined as an increase of qPCR measured asexual parasites per mL compared to the first parasitemia measurement, within 28 days of PfSPZ DVI.

Time frame: Late Liver Stage: From Day 5 up to Day 32

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboLate Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth3 Participants
Early Liver Stage: 30 mg M5717Late Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth0 Participants
Early Liver Stage: 60 mg M5717Late Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth0 Participants
Early Liver Stage: 80 mg M5717Late Liver Stage: Number of Participants With Documented Blood Stage Parasite Growth0 Participants
Primary

Late Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)

Time to first positive parasitemia was defined as the time (i.e., number of days) from the PfSPZ DVI (i.e., date of DVI PfSPZ) to the first qPCR outcome greater than or equal to (\>=) 100 asexual parasites per milliliter (mL) of blood.

Time frame: Late Liver Stage: From Day 5 up to Day 32

Population: PP analysis set included all SAF participants who comply with the protocol and meet no criteria that could impact the proper evaluation of key objectives of the study. Here, Overall Number of Participants Analyzed signifies those participants who had positive parasitemia.

ArmMeasureValue (MEDIAN)
Early Liver Stage: Pooled PlaceboLate Liver Stage: Time to First Positive Parasitemia Based on Quantitative Polymerase Chain Reaction (qPCR)10.0 Days
Secondary

Apparent Terminal Half-life (t1/2) of M5717

Terminal half-life is the time measured for the concentration to decrease by one half. Terminal half-life calculated by natural log 2 divided by lambda z.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: PK analysis set included all participants, who received 1 dose of M5717, had no clinically important protocol deviations/important events affecting PK, \& provide at least 1 measurable post-dose concentration. Data was not available for 'Early liver stage: 30 mg M5717' arm as no participants were considered evaluable because of limited number of samples collected to characterize the elimination rate constant (lambda z) needed for calculation of t1/2.

ArmMeasureValue (MEDIAN)
Early Liver Stage: 30 mg M5717Apparent Terminal Half-life (t1/2) of M5717121 Hours
Early Liver Stage: 60 mg M5717Apparent Terminal Half-life (t1/2) of M5717121 Hours
Early Liver Stage: 80 mg M5717Apparent Terminal Half-life (t1/2) of M571766.9 Hours
Early Liver Stage: 100 mg M5717Apparent Terminal Half-life (t1/2) of M5717494 Hours
Early Liver Stage: 200 mg M5717Apparent Terminal Half-life (t1/2) of M571794.1 Hours
Late Liver Stage: Pooled PlaceboApparent Terminal Half-life (t1/2) of M571795.4 Hours
Late Liver Stage: 60 mg M5717Apparent Terminal Half-life (t1/2) of M5717136 Hours
Secondary

Apparent Total Body Clearance From Blood (CL/f) of M5717

Clearance of a drug was a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Apparent body clearance of the drug from blood, CL= Dose/AUC0-inf

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: PK analysis set included all participants, who received 1 dose of M5717, had no clinically important protocol deviations/important events affecting PK, \& provide at least 1 measurable post-dose concentration. Data was not available for 'Early liver stage: 30 mg M5717' arm as no participants were considered evaluable because of limited number of samples collected to characterize the elimination rate constant (lambda z) needed for calculation of CL/f.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: 30 mg M5717Apparent Total Body Clearance From Blood (CL/f) of M571746.9 Liter per Hours (L/h)Geometric Coefficient of Variation 31.81
Early Liver Stage: 60 mg M5717Apparent Total Body Clearance From Blood (CL/f) of M571740.3 Liter per Hours (L/h)Geometric Coefficient of Variation 25.24
Early Liver Stage: 80 mg M5717Apparent Total Body Clearance From Blood (CL/f) of M571752.9 Liter per Hours (L/h)Geometric Coefficient of Variation 12.52
Early Liver Stage: 100 mg M5717Apparent Total Body Clearance From Blood (CL/f) of M571720.3 Liter per Hours (L/h)Geometric Coefficient of Variation 37.44
Early Liver Stage: 200 mg M5717Apparent Total Body Clearance From Blood (CL/f) of M571754.8 Liter per Hours (L/h)Geometric Coefficient of Variation 71.03
Late Liver Stage: Pooled PlaceboApparent Total Body Clearance From Blood (CL/f) of M571743.0 Liter per Hours (L/h)Geometric Coefficient of Variation 4.7
Late Liver Stage: 60 mg M5717Apparent Total Body Clearance From Blood (CL/f) of M571741.4 Liter per Hours (L/h)Geometric Coefficient of Variation 53.73
Secondary

Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M5717

The Vz/f was defined as the theoretical volume in which the total amount of required to uniformly distribute to produce the desired plasma concentration. Apparent volume of distribution after oral dose (Vz/F) was influenced by the fraction absorbed. The Vz/f was calculated by dividing the dose with area under the concentration time curve from time zero to infinity multiplied with terminal elimination rate constant Lambda(z). Vz/f=Dose/AUC(0-inf) multiply Lambda(z).

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: PK analysis set included all participants, who received 1 dose of M5717, had no clinically important protocol deviations/important events affecting PK, \& provide at least 1 measurable post-dose concentration. Data was not available for 'Early liver stage: 30 mg M5717' arm as no participants were considered evaluable because of limited number of samples collected to characterize the elimination rate constant (lambda z) needed for calculation of Vz/F.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: 30 mg M5717Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M57177850 LiterGeometric Coefficient of Variation 42.71
Early Liver Stage: 60 mg M5717Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M57177600 LiterGeometric Coefficient of Variation 10.87
Early Liver Stage: 80 mg M5717Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M57175980 LiterGeometric Coefficient of Variation 15.57
Early Liver Stage: 100 mg M5717Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M571711200 LiterGeometric Coefficient of Variation 60.47
Early Liver Stage: 200 mg M5717Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M57178130 LiterGeometric Coefficient of Variation 35.29
Late Liver Stage: Pooled PlaceboApparent Volume of Distribution (Vz/F) During the Terminal Phase of M57175490 LiterGeometric Coefficient of Variation 15.71
Late Liver Stage: 60 mg M5717Apparent Volume of Distribution (Vz/F) During the Terminal Phase of M571727.59 LiterGeometric Coefficient of Variation 8340
Secondary

Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M5717

AUC0-inf was calculated by combining AUC0-t and AUCextra. AUC extra represents an extrapolated value obtained by Clast/ λz, where Clast is the calculated blood concentration at the last sampling time point at which the measured blood concentration is at or above the Lower Limit of quantification (LLQ) and λz is the apparent terminal rate constant determined by log-linear regression analysis of the measured blood concentrations of the terminal log-linear phase.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: PK analysis set included all participants, who received 1 dose of M5717, had no clinically important protocol deviations/important events affecting PK, \& provide at least 1 measurable post-dose concentration. Data was not available for 'Early liver stage: 30 mg M5717' arm as no participants were considered evaluable because of limited number of samples collected to characterize the elimination rate constant (lambda z) needed for calculation of AUC0-inf.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: 30 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57171280 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 31.81
Early Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57171990 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 25.24
Early Liver Stage: 80 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57171890 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 12.52
Early Liver Stage: 100 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57179840 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 37.44
Early Liver Stage: 200 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57171100 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 71.03
Late Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57172330 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 4.7
Late Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M57174830 hour*nanogram per milliliter(hour*ng/mL)Geometric Coefficient of Variation 53.73
Secondary

Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M5717

AUC from time zero to 168 hours post dose. Calculated using the mixed log linear trapezoidal rule (linear up, log down) using the nominal dosing interval.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120 and 168 hours post-dose

Population: Pharmacokinetic analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, and provide at least one measurable post-dose concentration.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M571750.4 h*ng/mLGeometric Coefficient of Variation 2325.31
Early Liver Stage: 30 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M5717805 h*ng/mLGeometric Coefficient of Variation 35.22
Early Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M57171190 h*ng/mLGeometric Coefficient of Variation 14.35
Early Liver Stage: 80 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M57171390 h*ng/mLGeometric Coefficient of Variation 5.34
Early Liver Stage: 100 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M57173680 h*ng/mLGeometric Coefficient of Variation 29.33
Early Liver Stage: 200 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M5717692 h*ng/mLGeometric Coefficient of Variation 53.24
Late Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M57171710 h*ng/mLGeometric Coefficient of Variation 8.67
Late Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 168 Hours Post-dose (AUC 0-168) of M57173190 h*ng/mLGeometric Coefficient of Variation 43.4
Secondary

Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717

AUC from time zero to 24 hours post dose, calculated using the mixed log linear trapezoidal rule (linear up, log down) using the nominal dosing interval.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12 and 24 hours post-dose

Population: Pharmacokinetic analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, and provide at least one measurable post-dose concentration.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M571725.8 h*ng/mLGeometric Coefficient of Variation 639.59
Early Liver Stage: 30 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717198 h*ng/mLGeometric Coefficient of Variation 40.21
Early Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717280 h*ng/mLGeometric Coefficient of Variation 18.23
Early Liver Stage: 80 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717290 h*ng/mLGeometric Coefficient of Variation 39.8
Early Liver Stage: 100 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717975 h*ng/mLGeometric Coefficient of Variation 33.02
Early Liver Stage: 200 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717160 h*ng/mLGeometric Coefficient of Variation 44.63
Late Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M5717445 h*ng/mLGeometric Coefficient of Variation 8.6
Late Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to 24 Hours Post-dose (AUC 0-24) of M57171020 h*ng/mLGeometric Coefficient of Variation 45.85
Secondary

Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M5717

Area under the blood concentration vs time curve from time zero to the last sampling time t at which the concentration was at or above the lower limit of quantification (LLQ). AUC0-t was to be calculated according to the mixed log-linear trapezoidal rule.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: Pharmacokinetic analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, and provide at least one measurable post-dose concentration.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M571721.9 hour*ng/mLGeometric Coefficient of Variation 1160.32
Early Liver Stage: 30 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M5717852 hour*ng/mLGeometric Coefficient of Variation 36.35
Early Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M57171270 hour*ng/mLGeometric Coefficient of Variation 14.08
Early Liver Stage: 80 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M57171470 hour*ng/mLGeometric Coefficient of Variation 4.65
Early Liver Stage: 100 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M57177330 hour*ng/mLGeometric Coefficient of Variation 42.8
Early Liver Stage: 200 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M5717657 hour*ng/mLGeometric Coefficient of Variation 67.17
Late Liver Stage: Pooled PlaceboArea Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M57171810 hour*ng/mLGeometric Coefficient of Variation 8.09
Late Liver Stage: 60 mg M5717Area Under the Blood Concentration-Time Curve From Time Zero to the Last Sampling Time (AUC 0-tlast) of M57173820 hour*ng/mLGeometric Coefficient of Variation 70.38
Secondary

Blood Concentration at 168 Hours (C168) of M5717

C168 is the calculated blood concentration at 168 hours post-dose at which the measured blood concentration is at or above the Lower Limit of quantification (LLQ).

Time frame: At 168 hours post-dose

Population: PK analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, \& provide at least one measurable post-dose concentration. Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: Pooled PlaceboBlood Concentration at 168 Hours (C168) of M5717NA ng/mL
Early Liver Stage: 30 mg M5717Blood Concentration at 168 Hours (C168) of M57172.89 ng/mLGeometric Coefficient of Variation 38.61
Early Liver Stage: 60 mg M5717Blood Concentration at 168 Hours (C168) of M57174.31 ng/mLGeometric Coefficient of Variation 13.43
Early Liver Stage: 80 mg M5717Blood Concentration at 168 Hours (C168) of M57174.16 ng/mLGeometric Coefficient of Variation 24.6
Early Liver Stage: 100 mg M5717Blood Concentration at 168 Hours (C168) of M571711.4 ng/mLGeometric Coefficient of Variation 40.64
Early Liver Stage: 200 mg M5717Blood Concentration at 168 Hours (C168) of M5717NA ng/mL
Late Liver Stage: Pooled PlaceboBlood Concentration at 168 Hours (C168) of M57174.88 ng/mLGeometric Coefficient of Variation 2.5
Late Liver Stage: 60 mg M5717Blood Concentration at 168 Hours (C168) of M57178.30 ng/mLGeometric Coefficient of Variation 45.6
Secondary

Blood Concentration at 24 Hours (C24) of M5717

Blood samples for PK analysis of C24 of M5717 was reported.

Time frame: At 24 hours post-dose

Population: Pharmacokinetic analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, and provide at least one measurable post-dose concentration. Here, Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: Pooled PlaceboBlood Concentration at 24 Hours (C24) of M5717NA ng/mL
Early Liver Stage: 30 mg M5717Blood Concentration at 24 Hours (C24) of M57176.77 ng/mLGeometric Coefficient of Variation 45.35
Early Liver Stage: 60 mg M5717Blood Concentration at 24 Hours (C24) of M57179.42 ng/mLGeometric Coefficient of Variation 28.12
Early Liver Stage: 80 mg M5717Blood Concentration at 24 Hours (C24) of M571711.3 ng/mLGeometric Coefficient of Variation 31.42
Early Liver Stage: 100 mg M5717Blood Concentration at 24 Hours (C24) of M571730.6 ng/mLGeometric Coefficient of Variation 24.91
Early Liver Stage: 200 mg M5717Blood Concentration at 24 Hours (C24) of M57176.06 ng/mLGeometric Coefficient of Variation 37.89
Late Liver Stage: Pooled PlaceboBlood Concentration at 24 Hours (C24) of M571714.9 ng/mLGeometric Coefficient of Variation 14.56
Late Liver Stage: 60 mg M5717Blood Concentration at 24 Hours (C24) of M571726.7 ng/mLGeometric Coefficient of Variation 37.88
Secondary

Elimination Rate Constant (Lambda z) of M5717

Elimination rate constant determined from the terminal slope of the log-transformed concentration curve using linear regression on terminal data points of the curve.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: PK analysis set included all participants, who received 1 dose of M5717, had no clinically important protocol deviations/important events affecting PK, \& provide at least 1 measurable post-dose concentration. Data was not available for 'Early liver stage: 30 mg M5717' arm as no participants were considered evaluable because of limited number of samples collected to characterize the elimination rate constant (lambda z).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: 30 mg M5717Elimination Rate Constant (Lambda z) of M57170.00597 One per Hours (1/h)Geometric Coefficient of Variation 22.93
Early Liver Stage: 60 mg M5717Elimination Rate Constant (Lambda z) of M57170.00529 One per Hours (1/h)Geometric Coefficient of Variation 30.44
Early Liver Stage: 80 mg M5717Elimination Rate Constant (Lambda z) of M57170.00885 One per Hours (1/h)Geometric Coefficient of Variation 28.59
Early Liver Stage: 100 mg M5717Elimination Rate Constant (Lambda z) of M57170.00182 One per Hours (1/h)Geometric Coefficient of Variation 55.45
Early Liver Stage: 200 mg M5717Elimination Rate Constant (Lambda z) of M57170.00677 One per Hours (1/h)Geometric Coefficient of Variation 38.43
Late Liver Stage: Pooled PlaceboElimination Rate Constant (Lambda z) of M57170.00786 One per Hours (1/h)Geometric Coefficient of Variation 12.78
Late Liver Stage: 60 mg M5717Elimination Rate Constant (Lambda z) of M57170.00511 One per Hours (1/h)Geometric Coefficient of Variation 30.5
Secondary

Maximum Observed Blood Concentration (Cmax) of M5717

Cmax was obtained directly from the concentration versus time curve.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: Pharmacokinetic analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, and provide at least one measurable post-dose concentration.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Early Liver Stage: Pooled PlaceboMaximum Observed Blood Concentration (Cmax) of M57173.56 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 39.9
Early Liver Stage: 30 mg M5717Maximum Observed Blood Concentration (Cmax) of M571711.7 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 36.93
Early Liver Stage: 60 mg M5717Maximum Observed Blood Concentration (Cmax) of M571716.6 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 33.7
Early Liver Stage: 80 mg M5717Maximum Observed Blood Concentration (Cmax) of M571717.2 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 44.12
Early Liver Stage: 100 mg M5717Maximum Observed Blood Concentration (Cmax) of M571757.2 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 38.08
Early Liver Stage: 200 mg M5717Maximum Observed Blood Concentration (Cmax) of M57179.38 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 82.5
Late Liver Stage: Pooled PlaceboMaximum Observed Blood Concentration (Cmax) of M571727.6 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 22.19
Late Liver Stage: 60 mg M5717Maximum Observed Blood Concentration (Cmax) of M571764.4 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 46.26
Secondary

Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings

Single 12-lead ECG was obtained as outlined using an ECG machine that automatically calculates the heart rate and measures PR, QRS, and QT intervals. Number of participants with clinically significant changes from baseline in ECG which were deemed clinically significant by the investigator were reported.

Time frame: Early Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36

Population: SAF included all ITT participants, who have been inoculated using a DVI of PfSPZ and who were administered one dose of study intervention (M5717 or placebo)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboNumber of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Clinically Significant Change From Baseline in 12-lead Electrocardiogram (ECG) Findings0 Participants
Secondary

Number of Participants With Clinically Significant Change From Baseline in Laboratory Values

Laboratory assessments included hematology, biochemistry, urinalysis, and coagulation. Number of participants with clinically significant changes from baseline in laboratory values which were deemed clinically significant by the investigator were reported.

Time frame: Early Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36

Population: SAF included all ITT participants, who have been inoculated using a DVI of PfSPZ and who were administered one dose of study intervention (M5717 or placebo).

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboNumber of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Clinically Significant Change From Baseline in Laboratory Values0 Participants
Secondary

Number of Participants With Clinically Significant Change From Baseline in Vital Signs

Vital signs included oral body temperature, height, weight, systolic blood pressure, diastolic blood pressure, and pulse rate. Number of participants with clinically significant changes from baseline in Vital signs which were deemed clinically significant by the investigator were reported.

Time frame: Early Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36

Population: SAF included all ITT participants, who have been inoculated using a DVI of PfSPZ and who were administered one dose of study intervention (M5717 or placebo).

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboNumber of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Secondary

Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on Severity

Severity of adverse events (AE) were assessed by the investigator per the Qualitative Toxicity Scale. Grade 1= Mild, Grade 2=Moderate, Grade 3=Severe. The number of participants that experienced at least one solicited local TEAE were summarized by grade. The term TEAE is defined as AEs starting or worsening after the first intake of the study drug. TEAEs include both Serious TEAEs and non-serious TEAEs. Number of participants with Grade=1, Grade=2 and 3 were reported.

Time frame: Early Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36

Population: SAF included all ITT participants, who have been inoculated using a Direct Intravenous Inoculation (DVI) of PfSPZ and who were administered one dose of study intervention (M5717 or placebo).

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Early Liver Stage: Pooled PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)3 Participants
Early Liver Stage: Pooled PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)5 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)2 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)3 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)2 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)6 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)1 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)6 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)1 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)3 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)0 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)3 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)1 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)2 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)3 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)3 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)0 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)2 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)1 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 1 (Mild)2 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 2 (Moderate)0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Treatment Emergent Adverse Events (TEAEs) Based on SeverityGrade 3 (Severe)0 Participants
Secondary

Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEs

An adverse event (AE) was defined as any untoward medical occurrence in a participant administered with study drug which does not necessarily had a causal relationship with the treatment. An AE was any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with use of a medicinal product, whether or not considered related to the medicinal product. A serious adverse event (SAE) was an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAE was defined as AEs starting or worsening after the first intake of the study drug. TEAEs included both serious TEAEs and non-serious TEAEs. Treatment-related TEAEs: reasonably related to study intervention.

Time frame: Early Liver Stage: From Day 1 up to Day 33; Late Liver Stage: From Day 1 up to Day 36

Population: SAF included all ITT participants, who have been inoculated using a Direct Intravenous Inoculation (DVI) of PfSPZ and who were administered one dose of study intervention (M5717 or placebo).

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Early Liver Stage: Pooled PlaceboNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs5 Participants
Early Liver Stage: Pooled PlaceboNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs2 Participants
Early Liver Stage: Pooled PlaceboNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs0 Participants
Early Liver Stage: 30 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs3 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs6 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs2 Participants
Early Liver Stage: 60 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs6 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs2 Participants
Early Liver Stage: 80 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs3 Participants
Early Liver Stage: 100 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs1 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs3 Participants
Early Liver Stage: 200 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs3 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs3 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs0 Participants
Late Liver Stage: Pooled PlaceboNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs1 Participants
Late Liver Stage: 60 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs3 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs2 Participants
Late Liver Stage: 100 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Serious TEAEs0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with Treatment-related TEAEs0 Participants
Late Liver Stage: 200 mg M5717Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs and Treatment-related TEAEsParticipants with TEAEs2 Participants
Secondary

Time to Reach Maximum Blood Concentration (Tmax) of M5717

Time to reach the maximum blood concentration (Tmax) was obtained directly from the concentration versus time curve.

Time frame: Pre-dose, 0.5, 1, 2, 3, 6, 12, 24, 120, 168, 192, 600, and 768 hours post-dose

Population: Pharmacokinetic analysis set included all participants, who received one dose of M5717, have no clinically important protocol deviations or important events affecting PK, and provide at least one measurable post-dose concentration.

ArmMeasureValue (MEDIAN)
Early Liver Stage: Pooled PlaceboTime to Reach Maximum Blood Concentration (Tmax) of M57176.00 Hours
Early Liver Stage: 30 mg M5717Time to Reach Maximum Blood Concentration (Tmax) of M57171.00 Hours
Early Liver Stage: 60 mg M5717Time to Reach Maximum Blood Concentration (Tmax) of M57173.25 Hours
Early Liver Stage: 80 mg M5717Time to Reach Maximum Blood Concentration (Tmax) of M57176.00 Hours
Early Liver Stage: 100 mg M5717Time to Reach Maximum Blood Concentration (Tmax) of M57171.00 Hours
Early Liver Stage: 200 mg M5717Time to Reach Maximum Blood Concentration (Tmax) of M57171.00 Hours
Late Liver Stage: Pooled PlaceboTime to Reach Maximum Blood Concentration (Tmax) of M57172.00 Hours
Late Liver Stage: 60 mg M5717Time to Reach Maximum Blood Concentration (Tmax) of M57172.00 Hours

Source: ClinicalTrials.gov · Data processed: Feb 10, 2026