Trial Outcomes & Findings for Safety and Efficacy of IDA for Onchocerciasis (NCT NCT04188301)

NCT ID: NCT04188301

Last Updated: 2024-06-04

Results Overview

Rates of severe adverse events (grade 3 or higher) following 1-day or 3-day triple drug treatment will be compared against those of the comparator regimen of 1 day of IVM/ALB.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

154 participants

Primary outcome timeframe

Within 7 days following end of treatment

Results posted on

2024-06-04

Participant Flow

Participants recruited in the Nkwanta North District in the Volta Region in Ghana through open community meetings.

Participant milestones

Participant milestones
Measure
IVM + ALB
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Baseline
STARTED
52
51
51
Baseline
COMPLETED
52
51
51
Baseline
NOT COMPLETED
0
0
0
Month 3
STARTED
52
51
51
Month 3
COMPLETED
52
51
50
Month 3
NOT COMPLETED
0
0
1
Month 12
STARTED
52
51
50
Month 12
COMPLETED
51
50
48
Month 12
NOT COMPLETED
1
1
2
Month 18
STARTED
51
50
48
Month 18
COMPLETED
45
50
48
Month 18
NOT COMPLETED
6
0
0

Reasons for withdrawal

Reasons for withdrawal
Measure
IVM + ALB
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Month 3
Lost to Follow-up
0
0
1
Month 12
Lost to Follow-up
0
0
2
Month 12
Death
1
1
0
Month 18
Lost to Follow-up
6
0
0

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
IVM + ALB
n=52 Participants
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=51 Participants
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=51 Participants
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Total
n=154 Participants
Total of all reporting groups
Age, Continuous
40.3 years
STANDARD_DEVIATION 12.18 • n=52 Participants
38.52 years
STANDARD_DEVIATION 14.08 • n=51 Participants
37.65 years
STANDARD_DEVIATION 2.16 • n=51 Participants
37.65 years
STANDARD_DEVIATION 13.32 • n=154 Participants
Sex: Female, Male
Female
21 Participants
n=52 Participants
18 Participants
n=51 Participants
11 Participants
n=51 Participants
50 Participants
n=154 Participants
Sex: Female, Male
Male
31 Participants
n=52 Participants
33 Participants
n=51 Participants
40 Participants
n=51 Participants
104 Participants
n=154 Participants
Race and Ethnicity Not Collected
0 Participants
Race and Ethnicity were not collected from any participant.
Region of Enrollment
Ghana
52 participants
n=52 Participants
51 participants
n=51 Participants
51 participants
n=51 Participants
154 participants
n=154 Participants
Ocular Microfilarae positive
Positive for ocular microfilarae
2 Participants
n=52 Participants
2 Participants
n=51 Participants
0 Participants
n=51 Participants
4 Participants
n=154 Participants
Ocular Microfilarae positive
Negative for ocular microfilarae
50 Participants
n=52 Participants
49 Participants
n=51 Participants
51 Participants
n=51 Participants
150 Participants
n=154 Participants

PRIMARY outcome

Timeframe: Within 7 days following end of treatment

Rates of severe adverse events (grade 3 or higher) following 1-day or 3-day triple drug treatment will be compared against those of the comparator regimen of 1 day of IVM/ALB.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=52 Participants
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=51 Participants
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=51 Participants
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Rates of Severe Adverse Events (SAEs) Across Study Arms
0 Participants
0 Participants
0 Participants

PRIMARY outcome

Timeframe: 18 months following treatment.

Population: The analysis was conducted on worms from participants who had nodulectomies conducted at 18 months. Not all participants who completed the study had nodulectomies conducted.

The effect of three treatment regimens for killing adult female O. volvulus worms will be compared based on the percentage of all adult female worms in nodules that are alive with embryos in the uterus 18 months after treatment.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=196 Female worms in nodules
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=274 Female worms in nodules
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=300 Female worms in nodules
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Percentage of Worms Killed Across Study Arms
127 Female worms in nodules
142 Female worms in nodules
159 Female worms in nodules

PRIMARY outcome

Timeframe: 18 months following treatment.

Population: The analysis was conducted on worms from participants who had nodulectomies conducted at 18 months. Not all participants who completed the study had nodulectomies conducted. Female worms were excluded who had collapsed uteri that could not be evaluated for fertility.

The effect of three treatment regimens for sterilizing adult female O. volvulus worms will be compared based on the percentage of all adult female worms that are fertile in the nodules 18 months after treatment.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=180 Female worms with intact uterus
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=261 Female worms with intact uterus
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=281 Female worms with intact uterus
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Percentage of Worms Sterilized Across Study Arms
41 Female worms with intact uterus
40 Female worms with intact uterus
34 Female worms with intact uterus

SECONDARY outcome

Timeframe: within 7 days following end of treatment

Population: For the Arm IDA x 3 doses, no participants had intraocular microfilariae present at baseline.

Rates of adverse events grade 3 or higher that occur within 7 days of treatment in the subset of participants who have intraocular microfilariae just prior to treatment with IDA will be compared by treatment group.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=2 Participants
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=2 Participants
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Rates of SAEs by Treatment Group in Those With Intraocular Microfilariae Just Prior to Treatment With IDA
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: within 3 months of treatment with IDA

Rates of ocular adverse events of any grade within 3 months will be compared by treatment group.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=52 Participants
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=51 Participants
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=51 Participants
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Rates of Ocular Adverse Events (Any Grade) by Treatment Group
4 Participants
4 Participants
3 Participants

SECONDARY outcome

Timeframe: 18 months following treatment

Population: Analysis conducted on participants who had nodulectomies conducted at 18 months. Not all participants who completed the study had nodulectomies conducted.

The effectiveness of three treatment regimens for killing adult female O. volvulus worms based on the percentage of all adult female worms in nodules that are alive 18 months after treatment.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=198 Female worms in nodule
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=274 Female worms in nodule
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=300 Female worms in nodule
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Effectiveness of Killing Adult Female Worms
127 Female worms in nodule
142 Female worms in nodule
159 Female worms in nodule

SECONDARY outcome

Timeframe: Baseline, 3 months, 12 months, & 18 months following treatment.

The effectiveness of three treatment regimens for complete clearance of microfilariae from the skin as determined by skin snips at 3, 12, and 18 months after treatment with IDA will be compared by treatment arm.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=52 Participants
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=51 Participants
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=51 Participants
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Effectiveness of Clearing Microfilariae From Skin by Skin Snips
Baseline
3.1 Count of Skin Microfilaria
Interval 1.8 to 5.5
1.7 Count of Skin Microfilaria
Interval 0.8 to 3.6
NA Count of Skin Microfilaria
Geometric mean could not be estimated because all values were zero
Effectiveness of Clearing Microfilariae From Skin by Skin Snips
Month 3
1.9 Count of Skin Microfilaria
Interval 1.0 to 3.4
3 Count of Skin Microfilaria
95% CI could not be estimated because raw data had only one nonzero value
2.1 Count of Skin Microfilaria
Interval 0.9 to 4.7
Effectiveness of Clearing Microfilariae From Skin by Skin Snips
Month 12
4.9 Count of Skin Microfilaria
Interval 2.8 to 8.5
2.5 Count of Skin Microfilaria
Interval 1.6 to 3.8
4.7 Count of Skin Microfilaria
Interval 2.8 to 7.9
Effectiveness of Clearing Microfilariae From Skin by Skin Snips
Month 18
7.0 Count of Skin Microfilaria
Interval 3.6 to 13.9
9.0 Count of Skin Microfilaria
Interval 4.6 to 17.6
8.6 Count of Skin Microfilaria
Interval 4.3 to 17.1

SECONDARY outcome

Timeframe: Baseline, 12 months, and 18 months following treatment

The effectiveness of three treatment regimens for preventing reappearance of microfilariae in the skin as determined by skin snips at 12 and 18 months after treatment will be compared by treatment arm. Measured by the presence of microfilariae in skin snips.

Outcome measures

Outcome measures
Measure
IVM + ALB
n=52 Participants
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=51 Participants
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=51 Participants
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
Effectiveness for Preventing Reappearance of Microfilariae in the Skin by Skin Snips
Baseline
7 Count of microfilarae+ participants
6 Count of microfilarae+ participants
0 Count of microfilarae+ participants
Effectiveness for Preventing Reappearance of Microfilariae in the Skin by Skin Snips
Month 12
23 Count of microfilarae+ participants
21 Count of microfilarae+ participants
21 Count of microfilarae+ participants
Effectiveness for Preventing Reappearance of Microfilariae in the Skin by Skin Snips
Month 18
20 Count of microfilarae+ participants
15 Count of microfilarae+ participants
17 Count of microfilarae+ participants

Adverse Events

IVM + ALB

Serious events: 0 serious events
Other events: 11 other events
Deaths: 1 deaths

IDA x 1 Dose

Serious events: 0 serious events
Other events: 15 other events
Deaths: 1 deaths

IDA x 3 Doses

Serious events: 0 serious events
Other events: 11 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
IVM + ALB
n=52 participants at risk
Single dose of oral IVM (150 µg/kg) plus ALB (400 mg) IVM w/ ALB: Participants will be given a single dose of oral IVM (150 µg/kg) plus ALB (400 mg) (IVM/ALB)
IDA x 1 Dose
n=51 participants at risk
Single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Single dose of IDA: Participants will be given a single dose of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
IDA x 3 Doses
n=51 participants at risk
Once daily for 3 days oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg) Three daily doses of IDA: Participants will be given one daily dose for 3 days of oral IVM (150 µg/kg), DEC (6 mg/kg) and ALB (400 mg)
General disorders
Chills
1.9%
1/52 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
5.9%
3/51 • Number of events 3 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
2.0%
1/51 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
Gastrointestinal disorders
Diarrhea
3.8%
2/52 • Number of events 2 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
3.9%
2/51 • Number of events 2 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
3.9%
2/51 • Number of events 2 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
Nervous system disorders
Headache
1.9%
1/52 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
7.8%
4/51 • Number of events 4 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
0.00%
0/51 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
Skin and subcutaneous tissue disorders
Itching skin
1.9%
1/52 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
9.8%
5/51 • Number of events 5 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
7.8%
4/51 • Number of events 4 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
Musculoskeletal and connective tissue disorders
Joint or muscle pain
5.8%
3/52 • Number of events 3 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
2.0%
1/51 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
3.9%
2/51 • Number of events 2 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
Eye disorders
Itching, ocular
7.7%
4/52 • Number of events 4 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
2.0%
1/51 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
3.9%
2/51 • Number of events 2 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
General disorders
Waist Pain
3.8%
2/52 • Number of events 2 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
2.0%
1/51 • Number of events 1 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.
5.9%
3/51 • Number of events 3 • Data was collected on adverse events for safety from baseline to 3 months after treatment. Serious adverse events and mortality were collected throughout the trial from baseline to 18 months after treatment.

Additional Information

Dr. Gary Weil

Washington University in St. Louis

Phone: 3144547787

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place