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Evaluate Azithromycin Plus Chloroquine And Sulfadoxine Plus Pyrimethamine Combinations For Intermittent Preventive Treatment Of Falciparum Malaria Infection In Pregnant Women In Africa

A Phase 3, Open Label, Randomized, Comparative Study To Evaluate Azithromycin Plus Chloroquine And Sulfadoxine Plus Pyrimethamine Combinations For Intermittent Preventive Treatment Of Falciparum Malaria Infection In Pregnant Women In Africa

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01103063
Enrollment
2891
Registered
2010-04-13
Start date
2010-10-31
Completion date
2013-11-30
Last updated
2015-06-16

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

Conditions

Intermittent Preventive Treatment In Pregnancy (IPTp)

Keywords

P. falciparum malaria, IPTp

Brief summary

The primary objective is to establish superiority of AZCQ over SP in protective efficacy for IPTp as measured by the proportion of subjects with sub-optimal pregnancy outcome.

Detailed description

After interim analysis of efficacy data by an External Data Monitoring Committee, this study was terminated. Investigators were notified on 22 Aug 2013. There were no safety concerns that led to this termination.

Interventions

combination tablet of 250mg azithromycin/155 chloroquine, Once daily PO for three days per treatment. There are total 3 treatments at 4-8 weeks intervals. The first treatment course will be administered during the second trimester (14-26 weeks of gestation as confirmed by ultrasound). The last treatment course should be given to subjects prior to or during 36 weeks of gestation.

DRUGsulfadoxine-pyrimethamine

Fansidar tablet (500 mg sulfadoxine /25 mg pyrimethamine), once daily, PO, single dose per treatment. There are total 3 treatments at 4-8 weeks intervals. The first treatment course will be administered during the second trimester (14-26 weeks of gestation as confirmed by ultrasound). The last treatment course should be given to subjects prior to or during 36 weeks of gestation.

Sponsors

London School of Hygiene and Tropical Medicine
CollaboratorOTHER
Medicines for Malaria Venture
CollaboratorOTHER
Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
16 Years to 35 Years
Healthy volunteers
Yes

Inclusion criteria

* Pregnant women (all gravidae) with ≥14 and ≤26 weeks of gestational age (by ultrasound). * Evidence of a personally signed and dated informed consent/assent document. Assent will be obtained from subjects \<18 years of age. * Subjects who are willing to and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures. * Subjects who are available for follow up at delivery and on 28 days post delivery.

Exclusion criteria

* Age \<16 years old or \>35 years old. * Multiple gestations as per the ultrasound at screening. * Clinical symptoms of malaria. * Hemoglobin \< 8 g/dL (at enrollment). * Any condition requiring hospitalization at enrollment. * History of convulsions, hypertension, diabetes or any other chronic illness that may adversely affect fetal growth and viability. * Inability to tolerate oral treatment in tablet form. * Known allergy to the study drugs (azithromycin, chloroquine, and sulfadoxine-pyrimethamine) or to any macrolides or sulphonamides. * Requirement to use medication during the study that might interfere with the evaluation of the study drug eg, trimethoprim-sulfamethoxazole use in subjects positive for HIV infection. * Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation. * Evidence of current obstetric complications that may adversely impact the pregnancy and/or fetal outcomes, including presence of congenital anomalies, placenta previa or abruption. * Known severe Sickle Cell (SS) disease or Sickle Hemoglobin C (SC) anemia. * Known family history of prolonged QT Syndrome, serious ventricular arrhythmia, or sudden cardiac death.

Design outcomes

Primary

MeasureTime frameDescription
Percentage Participants With Sub-optimal Pregnancy Outcome in Intent-to-Treat (IIT) PopulationApproximately 40 weeks of gestational ageAdverse pregnancy outcomes were defined as live-borne neonate (singleton) with low birth weight (LBW) (\<2,500 g), premature births (\<37 weeks as confirmed by the Ballard score), abortion (≤28 weeks), still birth (\>28 weeks), lost to follow-up prior to termination of pregnancy or delivery, or missing birth weight of the neonates.

Secondary

MeasureTime frameDescription
Percentage of Neonates With LBW (<2500 g) in ITT PopulationApproximately 40 weeks of gestational ageLBW was defined as live birth weight \<2500 g (up to and including 2499 g).
Percentage of Neonates With LBW (<2500 g) in Efficacy Analyzable PP PopulationApproximately 40 weeks of gestational ageLBW was defined as live birth weight \<2500 g (up to and including 2499 g).
Percentage of Participants With Severe Maternal Anemia (Hemoglobin [Hb] <8 g/dL) at 36-38 Weeks of GestationAt 36-38 weeks of gestation.Severe maternal anemia was defined as Hb \<8 g/dL.
Percentage of Participants With Maternal Anemia (Hb <11 g/dL) at 36-38 Weeks of GestationAt 36-38 weeks of gestation.Anemia was defined as Hb \<11 g/dL.
Percentage of Participants With Placental Parasitemia at DeliveryApproximately 40 weeks of gestational ageParticipants with placental parasitemia at delivery were diagnosed using Placental blood smear at birth from participants who deliver at hospital.
Percentage of Participants With Placental Malaria at Delivery Based on HistologyApproximately 40 weeks of gestational ageParticipants positive for placental malaria at delivery were evaluated based on placental histology.
Sexually Transmitted Infection (STI) Episodes Per ParticipantApproximately 40 weeks of gestational age .Number of episodes of sexually transmitted infection episodes per participant were noted. The STI's including Treponema pallidum, Neisseria gonorrhoeae, Chlamydia trachomatis, from first dose to delivery (diagnosis was based on clinical presentation and lab results).
Percentage of Participants With Sub-optimal Pregnancy Outcome Including Neonatal Death and Congenital MalformationApproximately 40 weeks of gestational age.Sub-optimal pregnancy outcome including neonatal deaths and congenital malformations, defined as any of the following: live-borne neonate (singleton) with low birth-weight (or LBW for short, defined as live birth weight \<2,500g), premature birth (\<37 weeks), abortion (≤28 weeks), still birth (\>28 weeks), neonatal death, congenital malformation, lost to follow-up prior to termination of pregnancy or delivery, or missing birth weight of the neonates.
Change From Baseline to 36-38 Weeks of Gestation in Hb Concentration.Baseline, at 36-38 weeks of gestation.Change from Baseline to 36-38 weeks of gestation in Hb concentration was noted.
Percentage of Neonates With Congenital Abnormalities at BirthApproximately 40 weeks of gestational age.Neonates with congenital abnormalities at birth were noted.
Percentage of Perinatal or Neonatal DeathsDay 28 after delivery.Percentage of perinatal or neonatal deaths were noted.
Birth Weight of Live Borne NeonateApproximately 40 weeks of gestational age.Birth weight of live borne neonates were calculated in grams.
Number of Episodes of Symptomatic Malaria Per Participant From First Intermittent Preventive Treatment of Falciparum Dose to DeliveryApproximately 40 weeks of gestational ageThis outcome measure determined if an episode of malaria started within the time period of first dose to delivery. Clinical episode of malaria was determined if the participant presented with clinical symptoms of malaria (fever \>37.5°C, oral) and diagnosed (either by rapid diagnostic tests or microscopy) with malaria.
Percentage of Participants Requiring Additional Treatment for Symptomatic Malaria From First Dose to DeliveryApproximately 40 weeks of gestational ageThis outcome measure evaluated the participants requiring additional treatments for malaria during the study period following the first dose (diagnosed based on clinical presentation and/or lab test results).
Percentage of Participants With Sub-optimal Pregnancy Outcome in Efficacy Analyzable Per Protocol (PP) PopulationApproximately 40 weeks of gestational ageAdverse pregnancy outcomes were defined as live-borne neonate (singleton) with LBW (\<2,500g), premature births (\<37 weeks as confirmed by the Ballard score), abortion (≤28 weeks), still birth (\>28 weeks), lost to follow-up prior to termination of pregnancy or delivery, or missing birth weight of the neonates.
Percentage of Participants With Peripheral Parasitemia at DeliveryApproximately 40 weeks of gestational ageThis outcome measure evaluated the percentage of participants positive for peripheral parasitemia at delivery. A participant was positive for parasitemia if the number of asexual parasites per μL was \>0.
Percentage of Participants With Cord Blood Parasitemia at DeliveryApproximately 40 weeks of gestational ageThis outcome measure evaluated the percentage of participants positive for cord blood parasitemia at delivery. A participant was positive for parasitemia if the number of asexual parasites per μL was \>0.
Percentage of Participants With Sexually Transmitted Infections From First Dose to 36-38 Weeks of GestationUpto 36-38 weeks of gestationSexual transmitted disease included Treponema pallidum, Neisseria gonorrhoeae, and Chlamydia trachomatis infections. This was diagnosed based on clinical presentation prior to Week 36-38 and/or lab test results between Week 36-38.
Percentage of Participants With Chlamydia Trachomatis Infection at 36-38 Weeks of GestationAt 36-38 weeks of gestationParticipants positive for Chlamydia trachomatis infection was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected and PCR assay was used for analysis.
Percentage of Participants With Neisseria Gonorrhoeae Infection at 36-38 Weeks of GestationAt 36-38 weeks of gestationParticipants positive for Neisseria gonorrhoeae infection was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected and PCR assay was used for analysis.
Percentage of Participants With Treponema Pallidum Infection at 36-38 Weeks of GestationAt 36-38 weeks of gestationParticipants positive for Treponema pallidum infection was diagnosed based on laboratory result at 36-38 weeks of gestation. Treponema Pallidum particle Agglutination Assay was used.
Percentage of Participants With Trichomonas Vaginalis Infection at 36-38 Weeks of GestationAt 36-38 weeks of gestationParticipants positive for Trichomonas vaginalis infection was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected for the laboratory test.
Percentage of Participants With Bacterial Vaginosis Infection at 36-38 Weeks of Gestation.At 36-38 weeks of gestationBacterial vaginosis was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected for the Gram staining.
Percentage of Neonates With Ophthalmia Neonatorum at Birth PeriodApproximately 40 weeks of gestational ageOphthalmia neonatorum was diagnosed at birth. The laboratory diagnosis was performed among neonates with purulent discharge.
Percentage of Participants With Bacterial Infections Including Pneumonia and Other Lower Respiratory Tract Infections From First Dose to DeliveryUp to approximately 40 weeks of gestational ageParticipants positive for bacterial infections including other lower respiratory tract infections were measured anytime from first dose administration to delivery.
Percentage of Participants With Pre-eclampsia From Week 20 to DeliveryFrom Week 20 to approximately 40 weeks of gestational agePre-eclampsia was diagnosed as systolic blood pressure of at least 140 mmHg and/or diastolic blood pressure of at least 90 mmHg on two separate readings taken at least 4 hours apart and proteinuria at least 300 mg protein in a 24 hour urine collection.
Nasopharyngeal Swabs Positive for Macrolide Resistant Streptococcus PneumoniaeVisits 6 and 7This outcome measure evaluated the Streptococcus pneumoniae sensitivity against macrolide antibiotics.
Nasopharyngeal Swabs Positive for Penicillin Resistant Streptococcus PneumoniaeVisits 6 and 7This outcome measure evaluated the Streptococcus pneumoniae sensitivity against penicillin antibiotics.
Percentage of Participants With Peripheral Parasitemia at 36-38 Weeks of GestationAt 36-38 weeks of gestationThis outcome measure evaluated the percentage of participants positive for peripheral parasitemia at 36-38 weeks of gestation. A participant was positive for parasitemia if the number of asexual parasites per μL was \>0.

Countries

Benin, Kenya, Malawi, Tanzania, Uganda

Participant flow

Recruitment details

This Phase 3, open label, randomized, parallel group study screened a total of 3259 participants in 6 sites. A total of 2891 were treated either with azithromycin+chloroquine or sulfadoxine+pyrimethamine.

Pre-assignment details

Pregnant women (all gravidae) with ≥14 and ≤26 weeks of gestational age were to be enrolled in this study. Approximately half of the participants were to be primigravidae and secundigravidae pregnant women since they had a higher risk for suboptimal pregnancy outcomes due to malaria.

Participants by arm

ArmCount
Azithromycin + Chloroquine
The participants received 1000 mg Azithromycin (AZ) and 620 mg of Chloroquine (CQ) base (4 combination tablets of AZCQ with individual strength of 250 mg/155 mg), by mouth once daily for 3 days (Days 0, 1, 2) per treatment. There were a total of 3 treatments at 4-8 week intervals.
1,446
Sulfadoxine + Pyrimethamine
The participants received sulfadoxine-pyrimethamine (SP) (Fansidar) treatment course: 1500 mg sulfadoxine and 75 mg pyrimethamine (3 fixed tablets of SP strength at 500 mg/25 mg), single oral dose on Day 0 of each treatment. There were a total of 3 treatments at 4-8 week intervals.
1,445
Total2,891

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event31
Overall StudyDeath31
Overall StudyLost to Follow-up6851
Overall StudyOther1611
Overall StudyProtocol Violation10
Overall StudyStudy terminated by Sponsor326342
Overall StudyWithdrawal by Subject6015

Baseline characteristics

CharacteristicAzithromycin + ChloroquineSulfadoxine + PyrimethamineTotal
Age, Continuous23.3 Years
STANDARD_DEVIATION 4.5
23.3 Years
STANDARD_DEVIATION 4.6
23.3 Years
STANDARD_DEVIATION 4.6
Sex: Female, Male
Female
1446 Participants1445 Participants2891 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
1,177 / 1,446888 / 1,445301 / 1,149326 / 1,196
serious
Total, serious adverse events
65 / 1,44642 / 1,445101 / 1,149104 / 1,196

Outcome results

Primary

Percentage Participants With Sub-optimal Pregnancy Outcome in Intent-to-Treat (IIT) Population

Adverse pregnancy outcomes were defined as live-borne neonate (singleton) with low birth weight (LBW) (\<2,500 g), premature births (\<37 weeks as confirmed by the Ballard score), abortion (≤28 weeks), still birth (\>28 weeks), lost to follow-up prior to termination of pregnancy or delivery, or missing birth weight of the neonates.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage Participants With Sub-optimal Pregnancy Outcome in Intent-to-Treat (IIT) Population26.16 Percentage of participants
Sulfadoxine + PyrimethaminePercentage Participants With Sub-optimal Pregnancy Outcome in Intent-to-Treat (IIT) Population23.67 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.1223795% CI: [0.97, 1.25]Mantel Haenszel
Secondary

Birth Weight of Live Borne Neonate

Birth weight of live borne neonates were calculated in grams.

Time frame: Approximately 40 weeks of gestational age.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of live births with available data.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Azithromycin + ChloroquineBirth Weight of Live Borne Neonate3148.3 grams
Sulfadoxine + PyrimethamineBirth Weight of Live Borne Neonate3146.2 grams
Comparison: The 2-sided P-value tests the null hypothesis that the mean difference is 0 (treatment group equality) versus not equal 0.p-value: 0.914595% CI: [-36.5, 40.8]ANOVA
Secondary

Change From Baseline to 36-38 Weeks of Gestation in Hb Concentration.

Change from Baseline to 36-38 weeks of gestation in Hb concentration was noted.

Time frame: Baseline, at 36-38 weeks of gestation.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of participants with available data.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Azithromycin + ChloroquineChange From Baseline to 36-38 Weeks of Gestation in Hb Concentration.0.13 g/dL
Sulfadoxine + PyrimethamineChange From Baseline to 36-38 Weeks of Gestation in Hb Concentration.0.27 g/dL
Comparison: The 2-sided P-value tests the null hypothesis that the mean difference is 0 (treatment group equality) versus not equal 0.p-value: 0.013195% CI: [-0.24, -0.03]ANCOVA
Secondary

Nasopharyngeal Swabs Positive for Macrolide Resistant Streptococcus Pneumoniae

This outcome measure evaluated the Streptococcus pneumoniae sensitivity against macrolide antibiotics.

Time frame: Visits 6 and 7

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participant with nasopharyngeal swabs isolating Streptococcus pneumoniae at the specified visit.

ArmMeasureGroupValue (NUMBER)
Azithromycin + ChloroquineNasopharyngeal Swabs Positive for Macrolide Resistant Streptococcus PneumoniaeVisit 6 (N = 8 and 17 respectively)0 Percentage of participants
Azithromycin + ChloroquineNasopharyngeal Swabs Positive for Macrolide Resistant Streptococcus PneumoniaeVisit 7 (N = 16 and 11 respectively)0 Percentage of participants
Sulfadoxine + PyrimethamineNasopharyngeal Swabs Positive for Macrolide Resistant Streptococcus PneumoniaeVisit 6 (N = 8 and 17 respectively)11.76 Percentage of participants
Sulfadoxine + PyrimethamineNasopharyngeal Swabs Positive for Macrolide Resistant Streptococcus PneumoniaeVisit 7 (N = 16 and 11 respectively)0 Percentage of participants
Comparison: Statistical analysis for Visit 6 presented above.p-value: 1Fisher Exact
Comparison: Statistical analysis for Visit 7 presented above.p-value: 1Fisher Exact
Secondary

Nasopharyngeal Swabs Positive for Penicillin Resistant Streptococcus Pneumoniae

This outcome measure evaluated the Streptococcus pneumoniae sensitivity against penicillin antibiotics.

Time frame: Visits 6 and 7

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participant with nasopharyngeal swabs isolating Streptococcus pneumoniae at the specified visit.

ArmMeasureGroupValue (NUMBER)
Azithromycin + ChloroquineNasopharyngeal Swabs Positive for Penicillin Resistant Streptococcus PneumoniaeVisit 6 (N = 8 and 17 respectively)0 Percentage of participants
Azithromycin + ChloroquineNasopharyngeal Swabs Positive for Penicillin Resistant Streptococcus PneumoniaeVisit 7 (N = 16 and 11 respectively)0 Percentage of participants
Sulfadoxine + PyrimethamineNasopharyngeal Swabs Positive for Penicillin Resistant Streptococcus PneumoniaeVisit 6 (N = 8 and 17 respectively)0 Percentage of participants
Sulfadoxine + PyrimethamineNasopharyngeal Swabs Positive for Penicillin Resistant Streptococcus PneumoniaeVisit 7 (N = 16 and 11 respectively)0 Percentage of participants
Comparison: Statistical analysis for Visit 6 presented above.p-value: 1Fisher Exact
Comparison: Statistical analysis for Visit 7 presented above.p-value: 1Fisher Exact
Secondary

Number of Episodes of Symptomatic Malaria Per Participant From First Intermittent Preventive Treatment of Falciparum Dose to Delivery

This outcome measure determined if an episode of malaria started within the time period of first dose to delivery. Clinical episode of malaria was determined if the participant presented with clinical symptoms of malaria (fever \>37.5°C, oral) and diagnosed (either by rapid diagnostic tests or microscopy) with malaria.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Azithromycin + ChloroquineNumber of Episodes of Symptomatic Malaria Per Participant From First Intermittent Preventive Treatment of Falciparum Dose to Delivery0.06 Number of episodes
Sulfadoxine + PyrimethamineNumber of Episodes of Symptomatic Malaria Per Participant From First Intermittent Preventive Treatment of Falciparum Dose to Delivery0.13 Number of episodes
Comparison: The 2-sided P-value tests the null hypothesis that the mean difference is 0 (treatment group equality) versus not equal 0.p-value: <0.000195% CI: [-0.09, -0.04]ANOVA
Secondary

Percentage of Neonates With Congenital Abnormalities at Birth

Neonates with congenital abnormalities at birth were noted.

Time frame: Approximately 40 weeks of gestational age.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of total live births.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Neonates With Congenital Abnormalities at Birth2.19 Percentage of neonates
Sulfadoxine + PyrimethaminePercentage of Neonates With Congenital Abnormalities at Birth2.44 Percentage of neonates
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.697895% CI: [0.53, 1.53]Mantel Haenszel
Secondary

Percentage of Neonates With LBW (<2500 g) in Efficacy Analyzable PP Population

LBW was defined as live birth weight \<2500 g (up to and including 2499 g).

Time frame: Approximately 40 weeks of gestational age

Population: Subset of ITT participants: outcome or withdrawal occurred on or before 8/27/2013 (date of study termination), compliant with study medication, birth weight measured on or before 7 days after birth if not already a failure, and did not switch to standard of care. N=Total Live Births.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Neonates With LBW (<2500 g) in Efficacy Analyzable PP Population4.72 Percentage of neonates
Sulfadoxine + PyrimethaminePercentage of Neonates With LBW (<2500 g) in Efficacy Analyzable PP Population5.21 Percentage of neonates
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.608695% CI: [0.63, 1.31]Mantel Haenszel
Secondary

Percentage of Neonates With LBW (<2500 g) in ITT Population

LBW was defined as live birth weight \<2500 g (up to and including 2499 g).

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Total live births.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Neonates With LBW (<2500 g) in ITT Population5.01 Percentage of neonates
Sulfadoxine + PyrimethaminePercentage of Neonates With LBW (<2500 g) in ITT Population5.72 Percentage of neonates
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.442895% CI: [0.62, 1.23]Mantel Haenszel
Secondary

Percentage of Neonates With Ophthalmia Neonatorum at Birth Period

Ophthalmia neonatorum was diagnosed at birth. The laboratory diagnosis was performed among neonates with purulent discharge.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Total live births.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Neonates With Ophthalmia Neonatorum at Birth Period0.35 Percentage of neonates
Sulfadoxine + PyrimethaminePercentage of Neonates With Ophthalmia Neonatorum at Birth Period0.17 Percentage of neonates
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.394295% CI: [0.38, 11.38]Mantel Haenszel
Secondary

Percentage of Participants Requiring Additional Treatment for Symptomatic Malaria From First Dose to Delivery

This outcome measure evaluated the participants requiring additional treatments for malaria during the study period following the first dose (diagnosed based on clinical presentation and/or lab test results).

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants Requiring Additional Treatment for Symptomatic Malaria From First Dose to Delivery5.74 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants Requiring Additional Treatment for Symptomatic Malaria From First Dose to Delivery10.52 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: <0.000195% CI: [0.38, 0.62]Mantel Haenszel
Secondary

Percentage of Participants With Bacterial Infections Including Pneumonia and Other Lower Respiratory Tract Infections From First Dose to Delivery

Participants positive for bacterial infections including other lower respiratory tract infections were measured anytime from first dose administration to delivery.

Time frame: Up to approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participants with available data.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Bacterial Infections Including Pneumonia and Other Lower Respiratory Tract Infections From First Dose to Delivery0.48 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Bacterial Infections Including Pneumonia and Other Lower Respiratory Tract Infections From First Dose to Delivery1.25 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.033295% CI: [0.16, 0.93]Mantel Haenszel
Secondary

Percentage of Participants With Bacterial Vaginosis Infection at 36-38 Weeks of Gestation.

Bacterial vaginosis was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected for the Gram staining.

Time frame: At 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participants with laboratory test results at 36-38 weeks of gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Bacterial Vaginosis Infection at 36-38 Weeks of Gestation.8.58 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Bacterial Vaginosis Infection at 36-38 Weeks of Gestation.11.84 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.038495% CI: [0.54, 0.98]Mantel Haenszel
Secondary

Percentage of Participants With Chlamydia Trachomatis Infection at 36-38 Weeks of Gestation

Participants positive for Chlamydia trachomatis infection was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected and PCR assay was used for analysis.

Time frame: At 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participants with lab test results at 36-38 weeks of gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Chlamydia Trachomatis Infection at 36-38 Weeks of Gestation1.47 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Chlamydia Trachomatis Infection at 36-38 Weeks of Gestation0.63 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.111395% CI: [0.82, 6.66]Mantel Haenszel
Secondary

Percentage of Participants With Cord Blood Parasitemia at Delivery

This outcome measure evaluated the percentage of participants positive for cord blood parasitemia at delivery. A participant was positive for parasitemia if the number of asexual parasites per μL was \>0.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N = Number of participants with cord blood smear parasite counts at delivery.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Cord Blood Parasitemia at Delivery0.49 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Cord Blood Parasitemia at Delivery0.75 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.465595% CI: [0.22, 2.01]Mantel Haenszel
Secondary

Percentage of Participants With Maternal Anemia (Hb <11 g/dL) at 36-38 Weeks of Gestation

Anemia was defined as Hb \<11 g/dL.

Time frame: At 36-38 weeks of gestation.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of participants with Hb measurement at 36-38 weeks gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Maternal Anemia (Hb <11 g/dL) at 36-38 Weeks of Gestation50.57 Percentage of Participants
Sulfadoxine + PyrimethaminePercentage of Participants With Maternal Anemia (Hb <11 g/dL) at 36-38 Weeks of Gestation49.11 Percentage of Participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.460595% CI: [0.95, 1.11]Mantel Haenszel
Secondary

Percentage of Participants With Neisseria Gonorrhoeae Infection at 36-38 Weeks of Gestation

Participants positive for Neisseria gonorrhoeae infection was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected and PCR assay was used for analysis.

Time frame: At 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participants with laboratory test results at 36-38 weeks of gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Neisseria Gonorrhoeae Infection at 36-38 Weeks of Gestation0.40 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Neisseria Gonorrhoeae Infection at 36-38 Weeks of Gestation1.64 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.028495% CI: [0.07, 0.86]Mantel Haenszel
Secondary

Percentage of Participants With Peripheral Parasitemia at 36-38 Weeks of Gestation

This outcome measure evaluated the percentage of participants positive for peripheral parasitemia at 36-38 weeks of gestation. A participant was positive for parasitemia if the number of asexual parasites per μL was \>0.

Time frame: At 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N = Number of participants with peripheral blood smear parasite counts at 36-38 weeks of gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Peripheral Parasitemia at 36-38 Weeks of Gestation2.71 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Peripheral Parasitemia at 36-38 Weeks of Gestation4.38 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.03695% CI: [0.39, 0.97]Mantel Haenszel
Secondary

Percentage of Participants With Peripheral Parasitemia at Delivery

This outcome measure evaluated the percentage of participants positive for peripheral parasitemia at delivery. A participant was positive for parasitemia if the number of asexual parasites per μL was \>0.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N = Number of participants with peripheral blood smear parasite counts at delivery.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Peripheral Parasitemia at Delivery6.05 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Peripheral Parasitemia at Delivery7.46 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.197595% CI: [0.59, 1.12]Mantel Haenszel
Secondary

Percentage of Participants With Placental Malaria at Delivery Based on Histology

Participants positive for placental malaria at delivery were evaluated based on placental histology.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of participants with a histology parasite evaluation at delivery.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Placental Malaria at Delivery Based on Histology4.81 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Placental Malaria at Delivery Based on Histology5.73 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.346895% CI: [0.59, 1.21]Mantel Haenszel
Secondary

Percentage of Participants With Placental Parasitemia at Delivery

Participants with placental parasitemia at delivery were diagnosed using Placental blood smear at birth from participants who deliver at hospital.

Time frame: Approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of participants with placental parasite counts at delivery.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Placental Parasitemia at Delivery5.30 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Placental Parasitemia at Delivery5.67 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.710595% CI: [0.65, 1.33]Mantel Haenszel
Secondary

Percentage of Participants With Pre-eclampsia From Week 20 to Delivery

Pre-eclampsia was diagnosed as systolic blood pressure of at least 140 mmHg and/or diastolic blood pressure of at least 90 mmHg on two separate readings taken at least 4 hours apart and proteinuria at least 300 mg protein in a 24 hour urine collection.

Time frame: From Week 20 to approximately 40 weeks of gestational age

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N= Number of participants with available data.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Pre-eclampsia From Week 20 to Delivery0.63 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Pre-eclampsia From Week 20 to Delivery1.04 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.232195% CI: [0.27, 1.38]Mantel Haenszel
Secondary

Percentage of Participants With Severe Maternal Anemia (Hemoglobin [Hb] <8 g/dL) at 36-38 Weeks of Gestation

Severe maternal anemia was defined as Hb \<8 g/dL.

Time frame: At 36-38 weeks of gestation.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of participants with Hb measurement at 36-38 weeks gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Severe Maternal Anemia (Hemoglobin [Hb] <8 g/dL) at 36-38 Weeks of Gestation1.80 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Severe Maternal Anemia (Hemoglobin [Hb] <8 g/dL) at 36-38 Weeks of Gestation2.00 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.703595% CI: [0.51, 1.57]Mantel Haenszel
Secondary

Percentage of Participants With Sexually Transmitted Infections From First Dose to 36-38 Weeks of Gestation

Sexual transmitted disease included Treponema pallidum, Neisseria gonorrhoeae, and Chlamydia trachomatis infections. This was diagnosed based on clinical presentation prior to Week 36-38 and/or lab test results between Week 36-38.

Time frame: Upto 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Sexually Transmitted Infections From First Dose to 36-38 Weeks of Gestation12.32 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Sexually Transmitted Infections From First Dose to 36-38 Weeks of Gestation16.47 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.001695% CI: [0.62, 0.9]Mantel Haenszel
Secondary

Percentage of Participants With Sub-optimal Pregnancy Outcome Including Neonatal Death and Congenital Malformation

Sub-optimal pregnancy outcome including neonatal deaths and congenital malformations, defined as any of the following: live-borne neonate (singleton) with low birth-weight (or LBW for short, defined as live birth weight \<2,500g), premature birth (\<37 weeks), abortion (≤28 weeks), still birth (\>28 weeks), neonatal death, congenital malformation, lost to follow-up prior to termination of pregnancy or delivery, or missing birth weight of the neonates.

Time frame: Approximately 40 weeks of gestational age.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Total Outcomes.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Sub-optimal Pregnancy Outcome Including Neonatal Death and Congenital Malformation28.51 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Sub-optimal Pregnancy Outcome Including Neonatal Death and Congenital Malformation26.51 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.226595% CI: [0.96, 1.21]Mantel Haenszel
Secondary

Percentage of Participants With Sub-optimal Pregnancy Outcome in Efficacy Analyzable Per Protocol (PP) Population

Adverse pregnancy outcomes were defined as live-borne neonate (singleton) with LBW (\<2,500g), premature births (\<37 weeks as confirmed by the Ballard score), abortion (≤28 weeks), still birth (\>28 weeks), lost to follow-up prior to termination of pregnancy or delivery, or missing birth weight of the neonates.

Time frame: Approximately 40 weeks of gestational age

Population: Subset of ITT participants: outcome or withdrawal occurred on or before 8/27/2013 (date of study termination), compliant with study medication, birth weight measured on or before 7 days after birth if not already a failure, and did not switch to standard of care.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Sub-optimal Pregnancy Outcome in Efficacy Analyzable Per Protocol (PP) Population10.38 Percentage of Participants
Sulfadoxine + PyrimethaminePercentage of Participants With Sub-optimal Pregnancy Outcome in Efficacy Analyzable Per Protocol (PP) Population10.12 Percentage of Participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.8411795% CI: [0.8, 1.31]Mantel Haenszel
Secondary

Percentage of Participants With Treponema Pallidum Infection at 36-38 Weeks of Gestation

Participants positive for Treponema pallidum infection was diagnosed based on laboratory result at 36-38 weeks of gestation. Treponema Pallidum particle Agglutination Assay was used.

Time frame: At 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participants with laboratory test results at 36-38 weeks of gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Treponema Pallidum Infection at 36-38 Weeks of Gestation0.93 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Treponema Pallidum Infection at 36-38 Weeks of Gestation2.01 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.018895% CI: [0.24, 0.88]Mantel Haenszel
Secondary

Percentage of Participants With Trichomonas Vaginalis Infection at 36-38 Weeks of Gestation

Participants positive for Trichomonas vaginalis infection was diagnosed based on laboratory result at 36-38 weeks of gestation. A vaginal swab was collected for the laboratory test.

Time frame: At 36-38 weeks of gestation

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 is considered the first dose of study medication), and who had a single fetus. N=Number of participants with laboratory test results at 36-38 weeks of gestation.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Participants With Trichomonas Vaginalis Infection at 36-38 Weeks of Gestation8.24 Percentage of participants
Sulfadoxine + PyrimethaminePercentage of Participants With Trichomonas Vaginalis Infection at 36-38 Weeks of Gestation10.67 Percentage of participants
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.052795% CI: [0.59, 1]Mantel Haenszel
Secondary

Percentage of Perinatal or Neonatal Deaths

Percentage of perinatal or neonatal deaths were noted.

Time frame: Day 28 after delivery.

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of total live births.

ArmMeasureValue (NUMBER)
Azithromycin + ChloroquinePercentage of Perinatal or Neonatal Deaths2.19 Percentage of neonates
Sulfadoxine + PyrimethaminePercentage of Perinatal or Neonatal Deaths1.85 Percentage of neonates
Comparison: The 2-sided P-value tests the null hypothesis that the relative risk equals 1 (treatment group equality) versus not equal 1.p-value: 0.654295% CI: [0.64, 2.01]Mantel Haenszel
Secondary

Sexually Transmitted Infection (STI) Episodes Per Participant

Number of episodes of sexually transmitted infection episodes per participant were noted. The STI's including Treponema pallidum, Neisseria gonorrhoeae, Chlamydia trachomatis, from first dose to delivery (diagnosis was based on clinical presentation and lab results).

Time frame: Approximately 40 weeks of gestational age .

Population: ITT set was used which consisted of participants who were randomized, received at least one dose of study medication (Day 0 at Visit 1 was considered the first dose of study medication), and who had a single fetus. N=Number of participants with available data.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Azithromycin + ChloroquineSexually Transmitted Infection (STI) Episodes Per Participant0.14 Number of episodes
Sulfadoxine + PyrimethamineSexually Transmitted Infection (STI) Episodes Per Participant0.19 Number of episodes
Comparison: The 2-sided P-value tests the null hypothesis that the mean difference is 0 (treatment group equality) versus not equal 0.p-value: 0.001195% CI: [-0.08, -0.02]ANOVA

Source: ClinicalTrials.gov · Data processed: Mar 19, 2026