Malaria, Vivax
Conditions
Keywords
pharmacokinetic, pediatric, Tafenoquine, Plasmodium vivax Malaria, G6PD deficiency
Brief summary
This is a prospective, open-label, multicenter, non-comparative, single arm study of pediatric subjects with Plasmodium vivax (P. vivax) malaria, aged 6 months to \<16 years of age. A total of 60 subjects will be enrolled. Potential subjects who are slide-positive for P. vivax will be started by the site on chloroquine (CQ) per local/national guidelines. Sites will have up to 48 hours to obtain consent. Once full consent is provided, all subjects will be screened and, if eligible, receive Tafenoquine (TQ), given as a single dose on Day 1. All study medication should be taken with food. After the treatment period, subjects will attend up to 7 follow-up visits through Day 120 (Days 3, 8, 15, 29, 60, 90 and 120). The main cohort will consist of subjects aged \>=2 years to \<16 years with no restriction on gender. Subjects will be dosed according to four weight bands. Within the total of 60 enrolled pediatric subjects, a second cohort of up to 6 infants aged \>=6 months to \<2 years (weighing \>=5 kilogram \[kg\]) will be recruited following completion of a planned first interim analysis. An interim analysis will be conducted once sufficient data from 16 subjects is available to assess pharmacokinetic (PK) and safety parameters. If needed, a second interim analysis will be conducted after a total of 32 subjects have enrolled. The primary objective of this PK bridging study is to adequately characterize the systemic TQ exposure in the pediatric population in order to identify appropriate doses that achieve a similar exposure to that of the TQ adult dose of 300 milligram (mg).
Interventions
DRUGTafenoquine
Tafenoquine tablet is supplied as film-coated tablet (100 mg, 150 mg, 200 mg and 300 mg) and fast-dispersing film coated tablet (50 mg).
DRUGChloroquine
Subjects may receive chloroquine according to local/national treatment guidelines.
Sponsors
Medicines for Malaria Venture
GlaxoSmithKline
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
6 Months to 15 Years
Healthy volunteers
No
Inclusion criteria
* Subject is \>=2 years to \<16 years of age at the time of signing of the assent and/or informed consent. An additional cohort of subjects aged \>=6 months to \<2 years may be recruited following the first interim analysis. * The subject has a positive malarial smear for P. vivax. * The subject has a history of fever within 48 hours prior to enrollment. * The subject has a glucose 6-phosphate dehydrogenase (G6PD) value (measured by a quantitative spectrophotometric phenotype assay) \>=70% of the site median value for G6PD normal adult males. * The subject has a screening Hb value \>=8 gram per decilitre (g/dL). * The subject has a body weight \>=5 kg. * Males and females are eligible to enter the study. A female is eligible to enter and participate in this study if she is non-pregnant, non-lactating and if she is of: Non-childbearing potential (i.e., premenstrual); or Child-bearing potential, has a negative pregnancy test at screening, and agrees to comply with one of the following during the treatment stage of the study and for a period of 90 days after stopping study medication: Complete abstinence from intercourse for 2 weeks prior to administration of study medication, throughout the study and for a period of 90 days after stopping study medication; Use of combined oral contraceptive consisting of spermicide with either condom or diaphragm; Use of intrauterine device with a documented failure rate of \<1% per year; Use of depo provera injection; Male partner who is sterile prior to the female subject's entry into the study and is the sole sexual partner for that female. * The subject and/or the subject's parent(s)/legal guardian(s) agree to G6PD genotyping in the context of a subsequent hemolytic anemia AE. * The subject and parent(s)/legal guardian(s) are willing and able to comply with the study protocol. * In accordance with regional/local laws and regulations, the parent(s)/legal guardian(s) has given written informed, dated consent; and the subject has given written assent, if applicable, to participate in the study.
Exclusion criteria
* The subject has a mixed malaria infection (identified by a malarial smear or rapid diagnostic test). * The subject has a condition that may affect absorption of study medication, such as severe vomiting (no food or inability to take food during the previous 8 hours). * The subject has a liver alanine aminotransferase (ALT) \>2 time the upper limit of normal (ULN). * The subject has a clinically significant concurrent illness (for example; pneumonia, meningitis, septicaemia, coagulopathy, severe hemorrhage), pre-existing condition (e.g., renal disease, malignancy, malnutrition, known pre-existing human immunodeficiency virus \[HIV\]), febrile convulsions prior to consent, or clinical signs and symptoms of severe cardiovascular disease (for example; congenital heart disease). * The subject has a history of porphyria, psoriasis, or epilepsy. * The subject has taken anti-malarials (for example; artemisinin-based combination therapies, mefloquine, primaquine, or any other 4- or 8-aminoquinoline) or drugs with antimalarial activity within 30 days prior to study entry. * The subject has received treatment with any investigational drug within 30 days of study entry, or within 5 half-lives, whichever is longer. * The subject has taken or will likely require during the study the use of: histamine-2 blockers, antacids, anti-diabetic drugs of the biguanide class (i.e., phenformin, buformin), anti-arrhythmic agents dofetilide, procainamide, pilsicainide. * The subject has a serum creatinine above the ULN and is currently taking metformin. * The subject has a history of allergy or intolerance to chloroquine, mefloquine, tafenoquine, primaquine, or to any other 4- or 8-aminoquinoline. * The subject has previously enrolled in this study. * The subject has severe P. vivax malaria as defined by world health organization (WHO) criteria
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Area Under the Curve From Time 0 Extrapolated to Infinite Time (AUC[0-infinity]) of Tafenoquine by Weight Band in Participants Aged >=2 Years to <16 Years (Weighing >=5 kg) | Days 3, 15, 29 and 60 post dose | Blood samples were collected at indicated time points for pharmacokinetic analysis of tafenoquine. Pharmacokinetic parameters were determined using standard non-compartmental methods. AUC(0-infinity) of tafenoquine was evaluated for participants aged \>=2 years to \<16 years (weighing \>=5 kg). Pharmacokinetic (PK) population consisted of all participants with at least one PK sample taken at Days 3, 15, 29 and 60, with accurate dosing and sample time histories. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Number of Participants With Gastrointestinal Adverse Events | Up to Day 120 | Number of participants experiencing gastrointestinal adverse events including vomiting, abdominal pain, diarrhea, gastrointestinal disorder, epigastric discomfort and nausea were assessed. Number of participants with gastrointestinal adverse events for each treatment group have been presented. Safety Population consisted of all participants who received at least one dose of study medication (tafenoquine). |
| Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | Up to Day 120 | An adverse event (AE) is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporarily associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/ birth defect, other situations and is associated with liver injury. |
| Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Baseline (Day 1) and up to Day 8 | Blood samples were collected for analysis of eosinophils, lymphocytes, platelets and reticulocytes. PCI ranges were \>1.5\*10\^9 (high) cells per liter (cells/L) for eosinophils, \<0.5\*10\^9 cells/L (low) or \>4\*10\^9 cells/L (high) for lymphocytes, \<50\*10\^9 cells/L (low) for platelet count and \>1\*upper limit of normal (ULN) 10\^12 cells/L (high) for reticulocyte count. Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in To within Range or No Change category. Participants were counted twice if the participant has values that changed 'To Low' and 'To High', so the percentages may not add to 100%. Baseline value is the latest pre-tafenoquine dose assessment on Day 1. |
| Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | Baseline and up to Day 10 | Glucose-6-phosphate dehydrogenase (G6PD) deficiency is known to be a risk factor for hemolysis in participants treated with 8-aminoquinolines. Blood samples were collected for the evaluation of hemoglobin levels. Hemoglobin decrease of \>=30 percent (%) of \>30 grams per liter (g/L) from Baseline; or, an overall drop in hemoglobin below 60.0 g/L in the first 15 days of the study were considered as protocol defined serious adverse events (SAEs). Number of participants with hemoglobin decline from Baseline over first 10 days have been presented. Baseline was defined as the latest pre-tafenoquine dose assessment on Day 1. |
| Number of Participants With Relapse-Free Efficacy at 4 Months | 4 months | Relapse is defined as positive blood smear with or without vivax malaria symptoms. A participant was considered to have demonstrated relapse-free efficacy if: a) Participant is slide positive for Plasmodium vivax (P. vivax) at Baseline. b) Participant showed initial clearance of P. vivax parasitemia defined as a negative slide at or before the Day 29 visit. c) Participant is not slide-positive for P. vivax at any assessment. d) Participant did not take a concomitant medication with anti-malarial activity at any point between Study Day 1 and their last parasite assessment. e) Participant is parasite-free at 4 months defined as a negative asexual P. vivax parasite slide at the first parasite assessment performed during study. Microbiologic-Intent-To-Treat (mITT) Population consisted of all participants who received a dose of study treatment (tafenoquine) and had microscopically-confirmed vivax parasitemia at Baseline. |
| AUC(0-infinity) of Tafenoquine by Weight Band in Participants Aged >=6 Months to <2 Years (Weighing >=5 kg) | Days 3, 15, 29 and 60 post dose | Blood samples were planned to be collected at indicated time points for pharmacokinetic analysis of tafenoquine. |
| Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Baseline (Day 1) and up to Day 8 | Blood samples were collected for analysis of clinical chemistry parameters. PCI ranges were \>3\*ULN international units per liter (IU/L) (alanine aminotransferase \[ALT\]), \>2.5\*ULN IU/L (alkaline phosphatase), \>3\*ULN IU/L (aspartate aminotransferase \[AST\]), \>1.5\*ULN micromoles/L (mcmol/L) (bilirubin), \>5\*ULN IU/L (creatine kinase \[CK\]), 3\*ULN mcmol/L (creatinine), \>1.5\*ULN mcmol/L (indirect bilirubin), and \>11.067 millimoles/L (urea). Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in the To within Range or No Change category. Participants were counted twice if participant has values that changed To Low and To High, so the percentages may not add to 100%. Baseline value is the latest pre-Tafenoquine dose assessment on Day 1. |
Countries
Colombia, Vietnam
Participant flow
Recruitment details
This was an open label, Phase 2, multicenter study to assess the pharmacokinetics, safety and efficacy of tafenoquine in participants with Plasmodium Vivax Malaria.
Pre-assignment details
A total of 66 participants were screened, of which 6 participants failed screening. Hence, 60 participants were enrolled in this study. The cohort Tafenoquine 50mg was initiated, but study sites were unable to find any participants who met the inclusion/exclusion criteria for this cohort. Hence, no participants were enrolled in this cohort.
Participants by arm
| Arm | Count |
|---|---|
| Tafenoquine 50 mg Participants with weight band of \>=5 to \<=10 kilogram (kg) were planned to receive 50 milligram (mg) tafenoquine on Day 1. Participants were planned to receive Chloroquine according to local/national guidelines to treat the blood stage of Plasmodium vivax. | 0 |
| Tafenoquine 100 mg Participants with weight band of \>10 to \<=20 kg received 100 mg tafenoquine on Day 1. Participants received Chloroquine according to local/national guidelines to treat the blood stage of Plasmodium vivax. | 14 |
| Tafenoquine 150 mg Participants with weight band of \>10 to \<=20 kg received 150 mg tafenoquine on Day 1. Participants received Chloroquine according to local/national guidelines to treat the blood stage of Plasmodium vivax. | 5 |
| Tafenoquine 200 mg Participants with weight band of \>20 to \<=35 kg received 200 mg tafenoquine on Day 1. Participants received Chloroquine according to local/national guidelines to treat the blood stage of Plasmodium vivax. | 22 |
| Tafenoquine 300 mg Participants with weight band of \>35 kg received 300 mg tafenoquine on Day 1. Participants received Chloroquine according to local/national guidelines to treat the blood stage of Plasmodium vivax. | 19 |
| Total | 60 |
Baseline characteristics
| Characteristic | Tafenoquine 100 mg | Tafenoquine 150 mg | Tafenoquine 200 mg | Tafenoquine 300 mg | Total |
|---|---|---|---|---|---|
| Age, Continuous | 4.6 Years STANDARD_DEVIATION 1.99 | 4.8 Years STANDARD_DEVIATION 2.05 | 10.2 Years STANDARD_DEVIATION 1.82 | 12.8 Years STANDARD_DEVIATION 1.62 | 9.3 Years STANDARD_DEVIATION 3.8 |
| Race/Ethnicity, Customized American Indian or Alaskan Native | 9 Participants | 0 Participants | 11 Participants | 8 Participants | 28 Participants |
| Race/Ethnicity, Customized Asian: South East Asian Heritage | 5 Participants | 5 Participants | 11 Participants | 11 Participants | 32 Participants |
| Sex: Female, Male Female | 6 Participants | 3 Participants | 8 Participants | 7 Participants | 24 Participants |
| Sex: Female, Male Male | 8 Participants | 2 Participants | 14 Participants | 12 Participants | 36 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk | EG002 affected / at risk | EG003 affected / at risk | EG004 affected / at risk |
|---|---|---|---|---|---|
| deaths Total, all-cause mortality | 0 / 0 | 0 / 14 | 0 / 5 | 0 / 22 | 0 / 19 |
| other Total, other adverse events | 0 / 0 | 10 / 14 | 4 / 5 | 10 / 22 | 13 / 19 |
| serious Total, serious adverse events | 0 / 0 | 0 / 14 | 0 / 5 | 0 / 22 | 1 / 19 |
Outcome results
Primary
Area Under the Curve From Time 0 Extrapolated to Infinite Time (AUC[0-infinity]) of Tafenoquine by Weight Band in Participants Aged >=2 Years to <16 Years (Weighing >=5 kg)
Blood samples were collected at indicated time points for pharmacokinetic analysis of tafenoquine. Pharmacokinetic parameters were determined using standard non-compartmental methods. AUC(0-infinity) of tafenoquine was evaluated for participants aged \>=2 years to \<16 years (weighing \>=5 kg). Pharmacokinetic (PK) population consisted of all participants with at least one PK sample taken at Days 3, 15, 29 and 60, with accurate dosing and sample time histories.
Time frame: Days 3, 15, 29 and 60 post dose
Population: PK Population.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Tafenoquine 100 mg | Area Under the Curve From Time 0 Extrapolated to Infinite Time (AUC[0-infinity]) of Tafenoquine by Weight Band in Participants Aged >=2 Years to <16 Years (Weighing >=5 kg) | 85.1 Hours*microgram per milliliter |
| Tafenoquine 150 mg | Area Under the Curve From Time 0 Extrapolated to Infinite Time (AUC[0-infinity]) of Tafenoquine by Weight Band in Participants Aged >=2 Years to <16 Years (Weighing >=5 kg) | 154.7 Hours*microgram per milliliter |
| Tafenoquine 200 mg | Area Under the Curve From Time 0 Extrapolated to Infinite Time (AUC[0-infinity]) of Tafenoquine by Weight Band in Participants Aged >=2 Years to <16 Years (Weighing >=5 kg) | 111.4 Hours*microgram per milliliter |
| Tafenoquine 300 mg | Area Under the Curve From Time 0 Extrapolated to Infinite Time (AUC[0-infinity]) of Tafenoquine by Weight Band in Participants Aged >=2 Years to <16 Years (Weighing >=5 kg) | 120.8 Hours*microgram per milliliter |
Secondary
AUC(0-infinity) of Tafenoquine by Weight Band in Participants Aged >=6 Months to <2 Years (Weighing >=5 kg)
Blood samples were planned to be collected at indicated time points for pharmacokinetic analysis of tafenoquine.
Time frame: Days 3, 15, 29 and 60 post dose
Population: PK Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
Secondary
Number of Participants With Gastrointestinal Adverse Events
Number of participants experiencing gastrointestinal adverse events including vomiting, abdominal pain, diarrhea, gastrointestinal disorder, epigastric discomfort and nausea were assessed. Number of participants with gastrointestinal adverse events for each treatment group have been presented. Safety Population consisted of all participants who received at least one dose of study medication (tafenoquine).
Time frame: Up to Day 120
Population: Safety Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
| Arm | Measure | Group | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Tafenoquine 100 mg | Number of Participants With Gastrointestinal Adverse Events | Epigastric discomfort | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Gastrointestinal Adverse Events | Nausea | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Gastrointestinal Adverse Events | Abdominal pain | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Gastrointestinal Adverse Events | Vomiting | 2 Participants |
| Tafenoquine 100 mg | Number of Participants With Gastrointestinal Adverse Events | Diarrhea | 2 Participants |
| Tafenoquine 100 mg | Number of Participants With Gastrointestinal Adverse Events | Gastrointestinal disorder | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Gastrointestinal Adverse Events | Epigastric discomfort | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Gastrointestinal Adverse Events | Abdominal pain | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Gastrointestinal Adverse Events | Diarrhea | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Gastrointestinal Adverse Events | Vomiting | 3 Participants |
| Tafenoquine 150 mg | Number of Participants With Gastrointestinal Adverse Events | Nausea | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Gastrointestinal Adverse Events | Gastrointestinal disorder | 1 Participants |
| Tafenoquine 200 mg | Number of Participants With Gastrointestinal Adverse Events | Nausea | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Gastrointestinal Adverse Events | Epigastric discomfort | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Gastrointestinal Adverse Events | Gastrointestinal disorder | 1 Participants |
| Tafenoquine 200 mg | Number of Participants With Gastrointestinal Adverse Events | Vomiting | 1 Participants |
| Tafenoquine 200 mg | Number of Participants With Gastrointestinal Adverse Events | Abdominal pain | 3 Participants |
| Tafenoquine 200 mg | Number of Participants With Gastrointestinal Adverse Events | Diarrhea | 1 Participants |
| Tafenoquine 300 mg | Number of Participants With Gastrointestinal Adverse Events | Nausea | 1 Participants |
| Tafenoquine 300 mg | Number of Participants With Gastrointestinal Adverse Events | Vomiting | 6 Participants |
| Tafenoquine 300 mg | Number of Participants With Gastrointestinal Adverse Events | Abdominal pain | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Gastrointestinal Adverse Events | Diarrhea | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Gastrointestinal Adverse Events | Gastrointestinal disorder | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Gastrointestinal Adverse Events | Epigastric discomfort | 1 Participants |
Secondary
Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is known to be a risk factor for hemolysis in participants treated with 8-aminoquinolines. Blood samples were collected for the evaluation of hemoglobin levels. Hemoglobin decrease of \>=30 percent (%) of \>30 grams per liter (g/L) from Baseline; or, an overall drop in hemoglobin below 60.0 g/L in the first 15 days of the study were considered as protocol defined serious adverse events (SAEs). Number of participants with hemoglobin decline from Baseline over first 10 days have been presented. Baseline was defined as the latest pre-tafenoquine dose assessment on Day 1.
Time frame: Baseline and up to Day 10
Population: Safety Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
| Arm | Measure | Group | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Tafenoquine 100 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | <=20 g/L | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >30 g/L or >=30% | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >20 g/L to <=30 g/L | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | <=20 g/L | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >30 g/L or >=30% | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >20 g/L to <=30 g/L | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >20 g/L to <=30 g/L | 1 Participants |
| Tafenoquine 200 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | <=20 g/L | 21 Participants |
| Tafenoquine 200 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >30 g/L or >=30% | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | <=20 g/L | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >30 g/L or >=30% | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Hemoglobin Decline From Baseline Over First 10 Days | >20 g/L to <=30 g/L | 0 Participants |
Secondary
Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs)
An adverse event (AE) is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporarily associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/ birth defect, other situations and is associated with liver injury.
Time frame: Up to Day 120
Population: Safety Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
| Arm | Measure | Group | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Tafenoquine 100 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | Non-SAEs | 10 Participants |
| Tafenoquine 100 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | SAEs | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | SAEs | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | Non-SAEs | 4 Participants |
| Tafenoquine 200 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | Non-SAEs | 10 Participants |
| Tafenoquine 200 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | SAEs | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | Non-SAEs | 13 Participants |
| Tafenoquine 300 mg | Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) | SAEs | 1 Participants |
Secondary
Number of Participants With Relapse-Free Efficacy at 4 Months
Relapse is defined as positive blood smear with or without vivax malaria symptoms. A participant was considered to have demonstrated relapse-free efficacy if: a) Participant is slide positive for Plasmodium vivax (P. vivax) at Baseline. b) Participant showed initial clearance of P. vivax parasitemia defined as a negative slide at or before the Day 29 visit. c) Participant is not slide-positive for P. vivax at any assessment. d) Participant did not take a concomitant medication with anti-malarial activity at any point between Study Day 1 and their last parasite assessment. e) Participant is parasite-free at 4 months defined as a negative asexual P. vivax parasite slide at the first parasite assessment performed during study. Microbiologic-Intent-To-Treat (mITT) Population consisted of all participants who received a dose of study treatment (tafenoquine) and had microscopically-confirmed vivax parasitemia at Baseline.
Time frame: 4 months
Population: mITT Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Tafenoquine 100 mg | Number of Participants With Relapse-Free Efficacy at 4 Months | 12 Participants |
| Tafenoquine 150 mg | Number of Participants With Relapse-Free Efficacy at 4 Months | 4 Participants |
| Tafenoquine 200 mg | Number of Participants With Relapse-Free Efficacy at 4 Months | 20 Participants |
| Tafenoquine 300 mg | Number of Participants With Relapse-Free Efficacy at 4 Months | 17 Participants |
Secondary
Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline
Blood samples were collected for analysis of clinical chemistry parameters. PCI ranges were \>3\*ULN international units per liter (IU/L) (alanine aminotransferase \[ALT\]), \>2.5\*ULN IU/L (alkaline phosphatase), \>3\*ULN IU/L (aspartate aminotransferase \[AST\]), \>1.5\*ULN micromoles/L (mcmol/L) (bilirubin), \>5\*ULN IU/L (creatine kinase \[CK\]), 3\*ULN mcmol/L (creatinine), \>1.5\*ULN mcmol/L (indirect bilirubin), and \>11.067 millimoles/L (urea). Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in the To within Range or No Change category. Participants were counted twice if participant has values that changed To Low and To High, so the percentages may not add to 100%. Baseline value is the latest pre-Tafenoquine dose assessment on Day 1.
Time frame: Baseline (Day 1) and up to Day 8
Population: Safety Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
| Arm | Measure | Group | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To High | 1 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To within Range or No Change | 21 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Alkaline phosphatase: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Urea: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | AST: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | CK: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Bilirubin: To High | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Indirect bilirubin: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | Creatinine: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Clinical Chemistry Results Relative to PCI Criteria Post-Baseline Relative to Baseline | ALT: To High | 0 Participants |
Secondary
Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline
Blood samples were collected for analysis of eosinophils, lymphocytes, platelets and reticulocytes. PCI ranges were \>1.5\*10\^9 (high) cells per liter (cells/L) for eosinophils, \<0.5\*10\^9 cells/L (low) or \>4\*10\^9 cells/L (high) for lymphocytes, \<50\*10\^9 cells/L (low) for platelet count and \>1\*upper limit of normal (ULN) 10\^12 cells/L (high) for reticulocyte count. Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in To within Range or No Change category. Participants were counted twice if the participant has values that changed 'To Low' and 'To High', so the percentages may not add to 100%. Baseline value is the latest pre-tafenoquine dose assessment on Day 1.
Time frame: Baseline (Day 1) and up to Day 8
Population: Safety Population. Data is not presented for the cohort Tafenoquine 50 mg; as no participants were enrolled in this cohort.
| Arm | Measure | Group | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To High | 1 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To within Range or No Change | 14 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To High | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To High | 2 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To Low | 0 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To within Range or No Change | 12 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To within Range or No Change | 13 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To within Range or No Change | 9 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To High | 5 Participants |
| Tafenoquine 100 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To within Range or No Change | 4 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To within Range or No Change | 5 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To Low | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To High | 2 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To within Range or No Change | 3 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To High | 1 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To High | 0 Participants |
| Tafenoquine 150 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To within Range or No Change | 5 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To within Range or No Change | 22 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To within Range or No Change | 20 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To High | 2 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To within Range or No Change | 20 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To High | 2 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To High | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To Low | 0 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To within Range or No Change | 18 Participants |
| Tafenoquine 200 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To High | 4 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To High | 3 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To within Range or No Change | 16 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Lymphocytes: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To High | 1 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To High | 4 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Reticulocyte count: To within Range or No Change | 15 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To within Range or No Change | 19 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To Low | 0 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Eosinophils: To within Range or No Change | 18 Participants |
| Tafenoquine 300 mg | Number of Participants With Worst Case Hematology Results Relative to Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline | Platelet count: To High | 0 Participants |