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Clinical Study to Investigate the Efficacy and Safety of NT 201 Compared to Placebo in the Treatment of Chronic Troublesome Drooling Associated With Neurological Disorders and/or Intellectual Disability

Prospective, Randomized, Double-blind, Placebo-controlled, Parallel-group, Multicenter Study With an Open-label Extension Period to Investigate the Efficacy and Safety of NT 201 in the Treatment of Children and Adolescents (2-17 Years) With Chronic Troublesome Sialorrhea Associated With Neurological Disorders, and/or Intellectual Disability

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02270736
Acronym
SIPEXI
Enrollment
256
Registered
2014-10-21
Start date
2015-02-09
Completion date
2019-05-07
Last updated
2021-08-10

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

Conditions

Cerebral Palsy, Chronic Troublesome Sialorrhea, Intellectual Disability, Stroke, Traumatic Brain Injury

Brief summary

The objective of this study is to investigate the efficacy and safety of NT 201 compared with placebo for the treatment of chronic troublesome sialorrhea associated with neurological disorders (e.g. cerebral palsy, traumatic brain injury) and/or intellectual disability in children and adolescents naïve to Botulinum neurotoxin treatment and aged 2-17 years.

Interventions

NT 201 placebo matching injection.

DRUGNT 201

NT 201 injection.

Sponsors

Merz Pharmaceuticals GmbH
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
2 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Male or female child/adolescent age 2-17 years. * Any neurological disorder (e.g. cerebral palsy or traumatic brain injury) and/or intellectual disability associated with chronic troublesome sialorrhea for at least 3 months up to the screening. In subjects with intellectual disability (ID) without neurological disorders, a diagnosis of ID by a specialist, e.g. pediatrician or by a center for developmental medicine is required for inclusion. * Severe drooling (modified Teacher´s Drooling Scale \[mTDS\] ≥ 6; clothing occasionally becomes damp) as rated by the investigator. * Parental consent and the subject's oral or written assent as the subject is able to provide.

Exclusion criteria

* Chronic troublesome sialorrhea not related to neurological disorders and/or intellectual disability. * Body weight \< 12 kg. * Pharmacological treatment for sialorrhea or concomitant medication known to influence sialorrhea strongly (e.g. anticholinergics with exception of locally applied or short acting drugs used under general anesthesia) within 45 days before baseline and during the entire study period. * Any previous known or suspected hypersensitivity to Botulinum toxin. * Aspiration pneumonia within 6 month before screening. * Any previous treatment with Botulinum toxin for any body region during the year before screening or within the screening period * Prior, concomitant or planned surgery or irradiation to head and neck to control sialorrhea (including salivary gland surgery or salivary gland irradiation) within one year before screening or planned for any part of the entire study period. * Concurrent diseases, including hematological, hepatic, renal, gastrointestinal, endocrine, pulmonary, musculoskeletal, or psychiatric diseases or conditions, which in the judgment of the investigator would put the subject at risk while in the study, could influence the results of the study, or negatively impact the subject's ability to participate in the study. * Extremely poor dental and/or oral condition that might preclude safe study participation by the judgment of the investigator. * Nursing mother or pregnant female subject.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Unstimulated Salivary Flow Rate (uSFR) at Week 4Baseline and Week 4This endpoint was planned to be analyzed in double-blind, MP, 6 to 17 years participants only. uSFR was assessed by weighing of absorbent swabs with safety threads soaked with saliva over 5 minutes and the procedure was repeated after 30 minutes. Salivary flow rate was equal to weight increase of swabs/time of collection. The average of the 2 results for flow rate was calculated. The reduction of measured weight over the study relates to improvement of sialorrhea.
Global Impression of Change Scale (GICS) at Week 4 Assessed by the Carer/Parent(s)Week 4This endpoint was analyzed in double-blind, MP, 6 to 17 years participants. The GICS was used to measure the carer's/parent's impression of change due to treatment. The response option was a common 7-point Likert scale, with the following values: +3 (very much improved); +2 (much improved); +1 (minimally improved); 0 (no change); -1 (minimally worse); -2 (much worse); -3 (very much worse).
Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleBaseline up to Week 64

Secondary

MeasureTime frameDescription
Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleBaseline up to Week 64
Change From Baseline in uSFR at Weeks 8 and 12Baseline and Weeks 8 and 12This endpoint was analyzed in double-blind, MP, 6 to 17 years participants. uSFR was assessed by weighing of absorbent swabs with safety threads soaked with saliva over 5 minutes and then procedure was repeated after 30 minutes. Salivary flow rate was equal to weight increase of swabs/time of collection. The average of the 2 results for flow rate was calculated. The reduction of measured weight over the study relates to improvement of sialorrhea.
Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleBaseline up to Week 64
Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleBaseline up to Week 64
GICS at Weeks 8 and 12Weeks 8 and 12This endpoint was analyzed in double-blind, MP, 6 to 17 years participants. The GICS was used to measure the carer's/parent's impression of change due to treatment. The response option was a common 7-point Likert scale with the following values: +3 (very much improved); +2 (much improved); +1 (minimally improved); 0 (no change); -1 (minimally worse); -2 (much worse); -3 (very much worse).
Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleBaseline up to Week 64

Countries

Georgia, Hungary, Poland, Russia, Serbia, Ukraine

Participant flow

Recruitment details

The study was conducted at 28 investigational sites in Georgia, Hungary, Poland, Russia, Serbia, and Ukraine.

Pre-assignment details

A total of 281 participants were screened, out of which 256 participants were enrolled/randomized into the study. Of these 256 participants, 255 participants received the study treatment. A total of 247 participants who completed the Main Period (MP) entered the Open-label Extension Period (OLEX) of the study.

Participants by arm

ArmCount
Double-blind MP: Placebo (Age 6 to 17 Years)
Participants received placebo via bilateral intraglandular injection into the parotid and submandibular glands in one injection session on Day 1 (Visit 2) of the MP, followed by an observation period of 16 weeks. Volumes were matched to the volumes of NT 201 (incobotulinumtoxinA; Xeomin) injected in the experimental arm.
72
Double-blind, MP: NT 201 (Age 6 to 17 Years)
Participants received NT 201 (up to 2.5 U/kg body weight) via bilateral intraglandular injection into the parotid and submandibular glands in one injection session on Day 1 (Visit 2) of the MP, followed by an observation period of 16 weeks.
148
Open-label, MP: NT 201 (Age 2 to 5 Years)
Participants received NT 201 (about 1.5-2 U/kg body weight) via bilateral intraglandular injection into the parotid and submandibular glands in one injection session on Day 1 (Visit 2) of the MP, followed by an observation period of 16 weeks.
35
Total255

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Main Period (MP) (up to 16 Weeks)Adverse Event01000
Main Period (MP) (up to 16 Weeks)Lost to Follow-up01000
Main Period (MP) (up to 16 Weeks)Randomized, not Treated00100
Main Period (MP) (up to 16 Weeks)Withdrawal by Subject20100
OLEX Period (up to 48 Weeks)Adverse Event00040
OLEX Period (up to 48 Weeks)Lack of Efficacy00020
OLEX Period (up to 48 Weeks)Lost to Follow-up00020
OLEX Period (up to 48 Weeks)Physician Decision00010
OLEX Period (up to 48 Weeks)Withdrawal by Subject000160

Baseline characteristics

CharacteristicTotalDouble-blind MP: Placebo (Age 6 to 17 Years)Double-blind, MP: NT 201 (Age 6 to 17 Years)Open-label, MP: NT 201 (Age 2 to 5 Years)
Age, Customized
85 years and over
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Adolescents (12-17 years)
76 Participants24 Participants52 Participants0 Participants
Age, Customized
Adults (18-64 years)
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Children (2-11 years)
179 Participants48 Participants96 Participants35 Participants
Age, Customized
From 65-84 years
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Infants and toddlers (28 days-23 months)
0 Participants0 Participants0 Participants0 Participants
Age, Customized
In utero
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Newborns (0-27 days)
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Preterm newborn infants (gestational age < 37 wks)
0 Participants0 Participants0 Participants0 Participants
Body Mass Index (BMI)15.9 kilogram per square meter (kg/m^2)
STANDARD_DEVIATION 3.23
16.4 kilogram per square meter (kg/m^2)
STANDARD_DEVIATION 3.65
15.8 kilogram per square meter (kg/m^2)
STANDARD_DEVIATION 3.25
15.3 kilogram per square meter (kg/m^2)
STANDARD_DEVIATION 1.85
Height129.1 centimeter (cm)
STANDARD_DEVIATION 19.64
135.3 centimeter (cm)
STANDARD_DEVIATION 16.92
132.8 centimeter (cm)
STANDARD_DEVIATION 17.15
101.1 centimeter (cm)
STANDARD_DEVIATION 8.09
Race/Ethnicity, Customized
Black or African American
0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
White
255 Participants72 Participants148 Participants35 Participants
Sex: Female, Male
Female
95 Participants27 Participants55 Participants13 Participants
Sex: Female, Male
Male
160 Participants45 Participants93 Participants22 Participants
Weight27.6 kilogram (kg)
STANDARD_DEVIATION 11.78
30.8 kilogram (kg)
STANDARD_DEVIATION 11.67
28.8 kilogram (kg)
STANDARD_DEVIATION 11.48
15.7 kilogram (kg)
STANDARD_DEVIATION 3

Adverse events

Event typeEG000
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 / 720 / 1480 / 350 / 2140 / 33
other
Total, other adverse events
3 / 723 / 1482 / 3534 / 21412 / 33
serious
Total, serious adverse events
1 / 720 / 1481 / 358 / 2140 / 33

Outcome results

Primary

Change From Baseline in Unstimulated Salivary Flow Rate (uSFR) at Week 4

This endpoint was planned to be analyzed in double-blind, MP, 6 to 17 years participants only. uSFR was assessed by weighing of absorbent swabs with safety threads soaked with saliva over 5 minutes and the procedure was repeated after 30 minutes. Salivary flow rate was equal to weight increase of swabs/time of collection. The average of the 2 results for flow rate was calculated. The reduction of measured weight over the study relates to improvement of sialorrhea.

Time frame: Baseline and Week 4

Population: The full analysis set (FAS) is identical to the subset of participants in the SES (MP) where subset of all participants received study medication (NT 201 or placebo) during the MP of the study.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Double-blind MP: Placebo (Age 6 to 17 Years)Change From Baseline in Unstimulated Salivary Flow Rate (uSFR) at Week 4-0.07 gram per minute (g/min)Standard Error 0.015
Double-blind, MP: NT 201 (Age 6 to 17 Years)Change From Baseline in Unstimulated Salivary Flow Rate (uSFR) at Week 4-0.14 gram per minute (g/min)Standard Error 0.012
Comparison: Least square mean (LS-Mean) is from a mixed model repeated measurement (MMRM) analysis with treatment group, pooled investigation sites, and age groups as fixed factors, visit\*treatment as interaction term, visit as repeated factor, and baseline uSFR score as covariate.p-value: =0.001295% CI: [-0.1, -0.03]MMRM
Primary

Global Impression of Change Scale (GICS) at Week 4 Assessed by the Carer/Parent(s)

This endpoint was analyzed in double-blind, MP, 6 to 17 years participants. The GICS was used to measure the carer's/parent's impression of change due to treatment. The response option was a common 7-point Likert scale, with the following values: +3 (very much improved); +2 (much improved); +1 (minimally improved); 0 (no change); -1 (minimally worse); -2 (much worse); -3 (very much worse).

Time frame: Week 4

Population: The FAS is identical to the subset of participants in the SES (MP) where subset of all participants received study medication (NT 201 or placebo) during the MP of the study.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Double-blind MP: Placebo (Age 6 to 17 Years)Global Impression of Change Scale (GICS) at Week 4 Assessed by the Carer/Parent(s)0.63 units on a scaleStandard Error 0.104
Double-blind, MP: NT 201 (Age 6 to 17 Years)Global Impression of Change Scale (GICS) at Week 4 Assessed by the Carer/Parent(s)0.91 units on a scaleStandard Error 0.075
Comparison: LS-Mean is from a MMRM analysis model with treatment group, pooled investigation sites, and age groups as fixed factors, visit\*treatment as interaction term, visit as repeated factor, and baseline Modified Teacher Drooling Scale (mTDS) score as covariate.p-value: =0.03295% CI: [0.02, 0.53]MMRM
Primary

Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection Cycle

Time frame: Baseline up to Week 64

Population: SES: subset of all participants who received study medication (NT 201 or placebo) during MP or (NT 201) during OLEX of study. n is number of participants evaluable for this measure at a given time period and who were included in the assessment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleFirst injection cycle (MP)11 Participants
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleOverall11 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleFirst injection cycle (MP)27 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleOverall27 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleFirst injection cycle (MP)5 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleOverall5 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleThird injection cycle (OLEX)35 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleSecond injection cycle (OLEX)44 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleFourth injection cycle (OLEX)40 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleOverall92 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleFourth injection cycle (OLEX)11 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleSecond injection cycle (OLEX)7 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleThird injection cycle (OLEX)5 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events (TEAEs) Overall and Per Injection CycleOverall15 Participants
Secondary

Change From Baseline in uSFR at Weeks 8 and 12

This endpoint was analyzed in double-blind, MP, 6 to 17 years participants. uSFR was assessed by weighing of absorbent swabs with safety threads soaked with saliva over 5 minutes and then procedure was repeated after 30 minutes. Salivary flow rate was equal to weight increase of swabs/time of collection. The average of the 2 results for flow rate was calculated. The reduction of measured weight over the study relates to improvement of sialorrhea.

Time frame: Baseline and Weeks 8 and 12

Population: The FAS is identical to the subset of participants in the SES (MP) where subset of all participants received study medication (NT 201 or placebo) during the MP of the study.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Double-blind MP: Placebo (Age 6 to 17 Years)Change From Baseline in uSFR at Weeks 8 and 12Change at Week 8-0.07 g/minStandard Error 0.015
Double-blind MP: Placebo (Age 6 to 17 Years)Change From Baseline in uSFR at Weeks 8 and 12Change at Week 12-0.06 g/minStandard Error 0.016
Double-blind, MP: NT 201 (Age 6 to 17 Years)Change From Baseline in uSFR at Weeks 8 and 12Change at Week 8-0.16 g/minStandard Error 0.012
Double-blind, MP: NT 201 (Age 6 to 17 Years)Change From Baseline in uSFR at Weeks 8 and 12Change at Week 12-0.16 g/minStandard Error 0.013
Comparison: Statistical analysis at Week 8: LS-Mean is from a MMRM analysis with treatment group, pooled investigation sites, and age groups as fixed factors, visit\*treatment as interaction term, visit as repeated factor, and baseline uSFR score as covariate.p-value: <0.000195% CI: [-0.12, -0.05]MMRM
Comparison: Statistical analysis at Week 12: LS-Mean is from a MMRM analysis with treatment group, pooled investigation sites, and age groups as fixed factors, visit\*treatment as interaction term, visit as repeated factor, and baseline uSFR score as covariate.p-value: <0.000195% CI: [-0.14, -0.06]MMRM
Secondary

GICS at Weeks 8 and 12

This endpoint was analyzed in double-blind, MP, 6 to 17 years participants. The GICS was used to measure the carer's/parent's impression of change due to treatment. The response option was a common 7-point Likert scale with the following values: +3 (very much improved); +2 (much improved); +1 (minimally improved); 0 (no change); -1 (minimally worse); -2 (much worse); -3 (very much worse).

Time frame: Weeks 8 and 12

Population: The FAS is identical to the subset of participants in the SES (MP) where subset of all participants received study medication (NT 201 or placebo) during the MP of the study.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Double-blind MP: Placebo (Age 6 to 17 Years)GICS at Weeks 8 and 12Week 120.47 units on a scaleStandard Error 0.111
Double-blind MP: Placebo (Age 6 to 17 Years)GICS at Weeks 8 and 12Week 80.54 units on a scaleStandard Error 0.096
Double-blind, MP: NT 201 (Age 6 to 17 Years)GICS at Weeks 8 and 12Week 120.87 units on a scaleStandard Error 0.073
Double-blind, MP: NT 201 (Age 6 to 17 Years)GICS at Weeks 8 and 12Week 80.94 units on a scaleStandard Error 0.068
Comparison: Statistical analysis at Week 8: LS-Mean is from a MMRM analysis model with treatment group, pooled investigation sites, and age groups as fixed factors, visit\*treatment as interaction term, visit as repeated factor, and baseline mTDS score as covariate.p-value: =0.000895% CI: [0.17, 0.63]MMRM
Comparison: Statistical analysis at Week 12: LS-Mean is from a MMRM analysis model with treatment group, pooled investigation sites, and age groups as fixed factors, visit\*treatment as interaction term, visit as repeated factor, and baseline mTDS score as covariate.p-value: =0.002695% CI: [0.14, 0.66]MMRM
Secondary

Occurrence of TEAEs Leading to Discontinuation Overall and by Injection Cycle

Time frame: Baseline up to Week 64

Population: SES: subset of all participants who received study medication (NT 201 or placebo) during MP or (NT 201) during OLEX of study. n is number of participants evaluable for this measure at a given time period and who were included in the assessment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleOverall1 Participants
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleFirst injection cycle (MP)1 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleOverall1 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleFirst injection cycle (MP)1 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleOverall1 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleFirst injection cycle (MP)1 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleSecond injection cycle (OLEX)2 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleOverall4 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleThird injection cycle (OLEX)2 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleOverall0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleThird injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Leading to Discontinuation Overall and by Injection CycleSecond injection cycle (OLEX)0 Participants
Secondary

Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection Cycle

Time frame: Baseline up to Week 64

Population: SES: subset of all participants who received study medication (NT 201 or placebo) during MP or (NT 201) during OLEX of study. n is number of participants evaluable for this measure at a given time period and who were included in the assessment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleFirst injection cycle (MP)0 Participants
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleOverall0 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleFirst injection cycle (MP)2 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleOverall2 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleOverall1 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleFirst injection cycle (MP)1 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleOverall10 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleSecond injection cycle (OLEX)5 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleThird injection cycle (OLEX)5 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleFourth injection cycle (OLEX)1 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleSecond injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleThird injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of TEAEs Related to Treatment as Assessed by the Investigator Overall and by Injection CycleOverall0 Participants
Secondary

Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection Cycle

Time frame: Baseline up to Week 64

Population: SES: subset of all participants who received study medication (NT 201 or placebo) during MP or (NT 201) during OLEX of study. n is number of participants evaluable for this measure at a given time period and who were included in the assessment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleFirst injection cycle (MP)0 Participants
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleOverall0 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleFirst injection cycle (MP)1 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleOverall1 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleFirst injection cycle (MP)0 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleOverall0 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleThird injection cycle (OLEX)1 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleSecond injection cycle (OLEX)3 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleOverall4 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleSecond injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleThird injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Adverse Events of Special Interest (AESI) Overall and by Injection CycleOverall0 Participants
Secondary

Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection Cycle

Time frame: Baseline up to Week 64

Population: SES: subset of all participants who received study medication (NT 201 or placebo) during MP or (NT 201) during OLEX of study. n is number of participants evaluable for this measure at a given time period and who were included in the assessment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleFirst injection cycle (MP)1 Participants
Double-blind MP: Placebo (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleOverall1 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleFirst injection cycle (MP)0 Participants
Double-blind, MP: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleOverall0 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleFirst injection cycle (MP)1 Participants
Open-label, MP: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleOverall1 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleThird injection cycle (OLEX)5 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleSecond injection cycle (OLEX)3 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 6 to 17 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleOverall8 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleFourth injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleSecond injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleThird injection cycle (OLEX)0 Participants
OLEX: NT 201 (Age 2 to 5 Years)Occurrence of Treatment Emergent Serious Adverse Events (TESAEs) Overall and by Injection CycleOverall0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026