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NCT00647296: CL201

Safety and Tolerability Study of KNS-760704 in Amyotrophic Lateral Sclerosis (ALS)

Completed Phase 2 Results posted Last updated 8 July 2021
What this trial tests

Phase 2 trial testing Placebo in Amyotrophic Lateral Sclerosis in 194 participants. Completed in 4 September 2009.

Timeline
9 April 2008
Primary endpoint
31 July 2009
4 September 2009

Quick facts

Lead sponsorKnopp Biosciences
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingquadruple
Primary purposetreatment
Enrollment194
Start date9 April 2008
Primary completion31 July 2009
Estimated completion4 September 2009
Sites21 locations across United States

Drugs / interventions tested

Conditions studied

Sponsor

Knopp Biosciences — full company profile →

Who can join

Adults 21 to 80, any sex, with Amyotrophic Lateral Sclerosis. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Part 1: Number of Participants With Potentially Clinically Significant Hematology Results by Treatment Group Primary · 12 weeks

Number of Participants with Potentially Clinically Significant Hematology Results by Treatment Group. Percentages based on number of patients with at least one non-missing post-baseline value in each treatment group. Patients are only counted once per criterion per laboratory test.

White Blood Cell Count (x10^3/uL) < 2000/uL
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Neutrophils (x10^3/uL) < 1000/uL
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Eosinophils (x10^3/uL) > 5000/uL
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Hemoglobin (g/dL) < 8 g/dL
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Platelets (x10^3/uL) < 50,000/uL
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Part 1: Number of Participants With Potentially Clinically Significant Blood Chemistry Results by Treatment Group Primary · 12 weeks

Number of Participants with Potentially Clinically Significant Blood Chemistry Results by Treatment Group. Percentages based on number of patients with at least one non-missing post-baseline value in each treatment group. Patients are only counted once per criterion per laboratory test.

Creatine Kinase (U/L) >= 10xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day1
Total Bilirubin (mg/dL) > 1.5xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
ALT (SGPT) (U/L) > 3xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day2
AST (SGOT) (U/L) > 3xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day1
Alkaline Phosphatase (U/L) > 1.5xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day1
BUN (mg/dL) > 5xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Creatinine (mg/dL) > 3xULN
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Sodium (mEq/L) low < 123 mEq/L
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Part 1: Number of Participants With Treatment Emergent Potentially Clinically Significant Electrocardiogram (ECG) Findings by Treatment Group Primary · 12 weeks

Number of Participants with Treatment Emergent Potentially Clinically Significant Electrocardiogram (ECG) Findings by Treatment Group. Percentages are based on the number of patients with at least one non-missing post-baseline value in each treatment group.

Rhythm Sinus Tachycardia > 120 bpm
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Rhythm Sinus Bradycardia < 40 bpm
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Rhythm Sinus Block/Sinus Arrest
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Rhythm Junctional Rhythm
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Rhythm Atrial Flutter
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Rhythm Atrial Fibrillation
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day1
Rhythm Supraventricular
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Rhythm Tachycardia > 100 bpm
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Part 1: Number of Participants With Potentially Clinically Significant Vital Sign Measurements by Treatment Group Primary · 12 weeks

Number of Participants with Potentially Clinically Significant Vital Sign Measurements by Treatment Group. Percentages are based on the number of patients with at least one non-missing post-baseline value in each treatment group.

Systolic Blood Pressure Increase of > 20 mmHg from baseline and >= 180mmHg
GroupValue95% CI
Placebo0
50 mg/Day2
150 mg/Day0
300 mg/Day0
Systolic Blood Pressure Decrease of < -20 mmHg from baseline and <= 90 mmHg
GroupValue95% CI
Placebo2
50 mg/Day0
150 mg/Day0
300 mg/Day0
Diastolic Blood Pressure Increase of > 15 mmHg from baseline and >= 105 mmHg
GroupValue95% CI
Placebo0
50 mg/Day1
150 mg/Day0
300 mg/Day0
Diastolic Blood Pressure Decrease of < -15 mmHg from baseline and <= 50 mmHg
GroupValue95% CI
Placebo1
50 mg/Day1
150 mg/Day0
300 mg/Day0
Pulse Increase of > 15 bpm from baseline and >= 120
GroupValue95% CI
Placebo0
50 mg/Day1
150 mg/Day0
300 mg/Day0
Pulse Decrease of < -15 bpm from baseline and <= 50
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day1
Body Weight Increase of > 7% lbs from baseline
GroupValue95% CI
Placebo0
50 mg/Day0
150 mg/Day0
300 mg/Day0
Body Weight Decrease of < -7% lbs from baseline
GroupValue95% CI
Placebo3
50 mg/Day2
150 mg/Day0
300 mg/Day1
Part 1: Slope of ALSFRS-R (ALS Functional Rating Scale With Respiratory Component) From Baseline to Week 12 by Treatment Group Secondary · 12 weeks

The ALSFRS-R (ALS functional rating scale with respiratory component) is a validated scale which measures 4 functional domains, comprising respiratory function, bulbar function, gross motor skills, and fine motor skills. There are a total of 12 questions, each scored from 0 to 4 for a total possible score of 48, with higher scores representing better function. Slope is calculated using a linear mixed effects model with x-axis time in months and y-axis ALSFRS-R score. Units for slope are change per month in units on the ALSFRS-R scale.

GroupValue95% CI
Placebo-1.278-1.82 – -0.74
Dexpramipexole (50 mg/Day)-1.885-2.48 – -1.29
Dexpramipexole (150 mg/Day)-1.165-1.71 – -0.62
Dexpramipexole (300 mg/Day)-0.878-1.44 – -0.31
Part 1: Slope of Upright Vital Capacity From Baseline to Week 12 by Treatment Group Secondary · 12 weeks

Slope of change in Upright Vital Capacity (percent predicted upright vital capacity) from Baseline to Week 12. A negative change/slope indicates clinical worsening. Slope is calculated using a linear mixed effects model with x-axis time in months and y-axis as percent predicted upright vital capacity. Units for slope are change per month in percent predicted upright vital capacity.

GroupValue95% CI
Placebo-4.398-6.42 – -2.38
Dexpramipexole (50 mg/Day)-4.003-6.23 – -1.77
Dexpramipexole (150 mg/Day)-2.389-4.44 – -0.34
Dexpramipexole (300 mg/Day)-3.947-6.07 – -1.82
Part 2 Placebo Washout: Number of Participants With Potentially Clinically Significant Hematology Secondary · 4 weeks

Number of Participants with Potentially Clinically Significant Hematology Results by Treatment Group. Percentages based on number of patients with at least one non-missing post-baseline value in each treatment group. Patients are only counted once per criterion per laboratory test.

White Blood Cell Count (x10^3/uL) < 2000/uL
GroupValue95% CI
Placebo0
Neutrophils (x10^3/uL) < 1000/uL
GroupValue95% CI
Placebo0
Eosinophils (x10^3/uL) > 5000/uL
GroupValue95% CI
Placebo0
Hemoglobin (g/dL) < 8 g/dL
GroupValue95% CI
Placebo0
Platelets (x10^3/uL) < 50,000/uL
GroupValue95% CI
Placebo0
Part 2 Placebo Washout: Number of Participants With Potentially Clinically Significant Blood Chemistry Results Secondary · 4 weeks

Number of Participants with Potentially Clinically Significant Blood Chemistry Results by Treatment Group. Percentages based on number of patients with at least one non-missing post-baseline value in each treatment group. Patients are only counted once per criterion per laboratory test.

Creatine Kinase (U/L) >= 10xULN
GroupValue95% CI
Placebo0
Total Bilirubin (mg/dL) > 1.5xULN
GroupValue95% CI
Placebo0
ALT (SGPT) (U/L) > 3xULN
GroupValue95% CI
Placebo0
AST (SGOT) (U/L) > 3xULN
GroupValue95% CI
Placebo0
Alkaline Phosphatase (U/L) > 1.5xULN
GroupValue95% CI
Placebo0
BUN (mg/dL) > 5xULN
GroupValue95% CI
Placebo0
Creatinine (mg/dL) > 3xULN
GroupValue95% CI
Placebo0
Sodium (mEq/L) low < 123 mEq/L
GroupValue95% CI
Placebo0
Part 2 Placebo Washout: Number of Participants With Treatment Emergent Potentially Clinically Significant Electrocardiogram (ECG) Findings Secondary · 4 weeks

Number of Participants with Treatment Emergent Potentially Clinically Significant Electrocardiogram (ECG) Findings by Treatment Group. Percentages are based on the number of patients with at least one non-missing post-baseline value in each treatment group.

Rhythm Sinus Tachycardia > 120 bpm
GroupValue95% CI
Placebo0
Rhythm Sinus Bradycardia < 40 bpm
GroupValue95% CI
Placebo0
Rhythm Sinus Block/Sinus Arrest
GroupValue95% CI
Placebo0
Rhythm Junctional Rhythm
GroupValue95% CI
Placebo0
Rhythm Atrial Flutter
GroupValue95% CI
Placebo0
Rhythm Atrial Fibrillation
GroupValue95% CI
Placebo0
Rhythm Supraventricular
GroupValue95% CI
Placebo0
Rhythm Tachycardia > 100 bpm
GroupValue95% CI
Placebo0
Part 2 Placebo Washout: Number of Participants With Potentially Clinically Significant Vital Sign Measurements Secondary · 4 weeks

Number of Participants with Potentially Clinically Significant Vital Sign Measurements by Treatment Group. Percentages are based on the number of patients with at least one non-missing post-baseline value in each treatment group.

Systolic Blood Pressure Increase of > 20 mmHg from baseline and >= 180mmHg
GroupValue95% CI
Placebo0
Systolic Blood Pressure Decrease of < -20 mmHg from baseline and <= 90 mmHg
GroupValue95% CI
Placebo0
Diastolic Blood Pressure Increase of > 15 mmHg from baseline and >= 105 mmHg
GroupValue95% CI
Placebo2
Diastolic Blood Pressure Decrease of < -15 mmHg from baseline and <= 50 mmHg
GroupValue95% CI
Placebo0
Pulse Increase of > 15 bpm from baseline and >= 120
GroupValue95% CI
Placebo1
Pulse Decrease of < -15 bpm from baseline and <= 50
GroupValue95% CI
Placebo1
Body Weight Increase of > 7% lbs from baseline
GroupValue95% CI
Placebo0
Body Weight Decrease of < -7% lbs from baseline
GroupValue95% CI
Placebo0
Part 2 Placebo Washout: Absolute Change in ALSFRS-R Total Score Secondary · 4 weeks

The ALSFRS-R (ALS functional rating scale with respiratory component) is a validated scale which measures 4 functional domains, comprising respiratory function, bulbar function, gross motor skills, and fine motor skills. There are a total of 12 questions, each scored from 0 to 4 for a total possible score of 48, with higher scores representing better function. Units are points on the ALSFRS-R score as an absolute change from the baseline of the placebo washout to week 4 of the placebo washout.

GroupValue95% CI
Placebo-1.2± 0.27
Part 2 Placebo Washout: Absolute Change in Upright Vital Capacity (Percent Predicted) From Baseline to End of Placebo Washout (Week 4) Secondary · 4 weeks

Absolute change in Upright Vital Capacity From Baseline to Week 4. Units are percent of predicted Upright Vital Capacity. A negative change indicates clinical worsening.

GroupValue95% CI
Placebo-3.1± 0.95

Adverse events — posted to ClinicalTrials.gov

Time frame: Part 1: up to 12 weeks; Part 2 Placebo washout: up to 4 weeks; Part 2 Treatment period: up to 18 months. Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Part 1: Placebo
Serious: 0/27 (0%)
Deaths: 0/27
Part 1: Dexpramipexole (50 mg/Day)
Serious: 2/23 (9%)
Deaths: 0/23
Part 1: Dexpramipexole (150 mg/Day)
Serious: 0/26 (0%)
Deaths: 0/26
Part 1: Dexpramipexole (300 mg/Day)
Serious: 3/26 (12%)
Deaths: 0/26
Part 2: Placebo Washout
Serious: 5/97 (5%)
Deaths: 3/97
Part 2: Dexpramipexole (50 mg/Day)
Serious: 14/48 (29%)
Deaths: 15/48
Part 2: Dexpramipexole (300 mg/Day)
Serious: 12/44 (27%)
Deaths: 9/44

Serious adverse events (32 terms)

ReactionSystemPart 1: PlaceboPart 1: Dexpramipexole (50…Part 1: Dexpramipexole (15…Part 1: Dexpramipexole (30…Part 2: Placebo WashoutPart 2: Dexpramipexole (50…Part 2: Dexpramipexole (30…
RESPIRATORY FAILURERespiratory, thoracic and mediastinal disorders
DYSPNOEARespiratory, thoracic and mediastinal disorders
DISEASE PROGRESSIONGeneral disorders
PNEUMONIAInfections and infestations
HUMERUS FRACTUREInjury, poisoning and procedural complications
DEEP VEIN THROMBOSISVascular disorders
PULMONARY EMBOLISMRespiratory, thoracic and mediastinal disorders
INTESTINAL INFARCTIONGastrointestinal disorders
ATRIAL FIBRILLATIONCardiac disorders
URETHRAL OBSTRUCTIONRenal and urinary disorders
URINARY RETENTIONRenal and urinary disorders
NEUTROPENIABlood and lymphatic system disorders
ACUTE MYOCARDIAL INFARCTIONCardiac disorders
CARDIAC FAILURE CONGESTIVECardiac disorders
VERTIGO POSITIONALEar and labyrinth disorders
ILEUSGastrointestinal disorders
NAUSEAGastrointestinal disorders
PANCREATITISGastrointestinal disorders
SUDDEN DEATHGeneral disorders
CHOLECYSTITIS ACUTEHepatobiliary disorders
PNEUMONIA BACTERIALInfections and infestations
VIRAL INFECTIONInfections and infestations
CONCUSSIONInjury, poisoning and procedural complications
FALLInjury, poisoning and procedural complications
SUBDURAL HAEMATOMAInjury, poisoning and procedural complications
Other adverse events (45 terms — click to expand)

ReactionSystemPart 1: PlaceboPart 1: Dexpramipexole (50…Part 1: Dexpramipexole (15…Part 1: Dexpramipexole (30…Part 2: Placebo WashoutPart 2: Dexpramipexole (50…Part 2: Dexpramipexole (30…
Muscular WeaknessMusculoskeletal and connective tissue disorders
FallInjury, poisoning and procedural complications
ConstipationGastrointestinal disorders
InsomniaPsychiatric disorders
Salivary HypersecretionGastrointestinal disorders
DepressionPsychiatric disorders
Dry MouthGastrointestinal disorders
DysphagiaGastrointestinal disorders
Post Lumbar Puncture SyndromeInjury, poisoning and procedural complications
Urinary Tract InfectionInfections and infestations
HeadacheNervous system disorders
AnxietyPsychiatric disorders
CoughRespiratory, thoracic and mediastinal disorders
DyspnoeaRespiratory, thoracic and mediastinal disorders
NauseaGastrointestinal disorders
SinusitisInfections and infestations
Upper Respiratory Tract InfectionInfections and infestations
DysarthriaNervous system disorders
Muscle SpasticityNervous system disorders
TachycardiaCardiac disorders
DiarrhoeaGastrointestinal disorders
Oedema PeripheralGeneral disorders
PyrexiaGeneral disorders
PneumoniaInfections and infestations
Neck PainMusculoskeletal and connective tissue disorders
Pain In ExtremityMusculoskeletal and connective tissue disorders
Pharyngolaryngeal PainRespiratory, thoracic and mediastinal disorders
Respiratory FailureRespiratory, thoracic and mediastinal disorders
RashSkin and subcutaneous tissue disorders
VomitingGastrointestinal disorders
Disease ProgressionGeneral disorders
FatigueGeneral disorders
ContusionInjury, poisoning and procedural complications
DehydrationMetabolism and nutrition disorders
HyperglycaemiaMetabolism and nutrition disorders
ArthralgiaMusculoskeletal and connective tissue disorders
Back PainMusculoskeletal and connective tissue disorders
Muscle SpasmsMusculoskeletal and connective tissue disorders
Musculoskeletal PainMusculoskeletal and connective tissue disorders
MyalgiaMusculoskeletal and connective tissue disorders

Most-reported serious reactions: RESPIRATORY FAILURE, DYSPNOEA, DISEASE PROGRESSION, PNEUMONIA, HUMERUS FRACTURE, DEEP VEIN THROMBOSIS, PULMONARY EMBOLISM, INTESTINAL INFARCTION.

Data from ClinicalTrials.gov NCT00647296 adverse events section.

Sponsor's own description

This was a 2-part study of dexpramipexole in patients with ALS. Part 1 was a randomized, placebo-controlled, multi-center study to evaluate the safety, tolerability, and clinical effects of oral administration of 3 dosage levels of dexpramipexole vs. placebo for 12 weeks. Part 2 was a randomized, double-blind, 2-arm, parallel group, extension study evaluating the safety, tolerability, and clinical effects of oral administration of 2 dosage levels of dexpramipexole for up to 72 weeks.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Insights into the Pathogenesis of Neurodegenerative Diseases: Focus on Mitochondrial Dysfunction and Oxidative Stress.
    Jurcau A. · · 2021 · cited 89× · PMID 34769277 · DOI 10.3390/ijms222111847
  2. Neuro-Immune Crosstalk: Molecular Mechanisms, Biological Functions, Diseases, and Therapeutic Targets.
    Guo X, Liu H, Song YJ, Wang JH, et al · · 2026 · cited 2× · PMID 41583906 · DOI 10.1002/mco2.70497

Verify or expand the search:

Other recruiting trials for Amyotrophic Lateral Sclerosis

Currently open trials in the same condition.

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Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT00647296.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing