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Study of Safety and Proof of the Mechanism of BLZ945 in ALS Patients

An Open-label, Adaptive Design Study in Patients With Amyotrophic Lateral Sclerosis (ALS) to Characterize Safety, Tolerability and Brain Microglia Response, as Measured by TSPO Binding, Following Multiple Doses of BLZ945 Using Positron Emission Tomography (PET) With the Radioligand [11C]-PBR28

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04066244
Enrollment
28
Registered
2019-08-26
Start date
2019-12-30
Completion date
2024-02-01
Last updated
2025-10-16

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

Conditions

Amyotrophic Lateral Sclerosis

Keywords

PET, ALS, Microglia, CSF

Brief summary

It was an open label study to evaluate safety, tolerability and brain microglia response in participants with Amyotrophic Lateral Sclerosis (ALS) following multiple doses of BLZ945.

Detailed description

The purpose of the study was to identify a dose (or doses) of BLZ945, that measurably decrease(s) 18 KDa Translocator Protein (TSPO) binding in the brain of participants with ALS. The study also aimed to evaluate the safety and tolerability of BLZ945 in participants with ALS at different doses and dosing regimens, and safety related effects on extracellular matrix (ECM) accumulation. This was an exploratory, adaptive , open label study of approximately 16 participants in cohorts of 4 participants per cohort at increasing doses of BLZ945 with the last dose determined after the completion of cohorts 1 to 3. Each cohort received treatment for 4 days and continued with a 32 day follow up period with an end of study visit at day 36. After completion of the 4 initial cohorts a fifth cohort was initiated with two parallel arms receiving BLZ945 for up to 12 weeks at two different treatment regimens, either once weekly or 4 days of treatment followed by 10 days off drug.

Interventions

DRUGBLZ945

Investigational drug capsules taken orally or via enteral infusion

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This study is an exploratory, adaptive, open-label study of single or multiple cycles of BLZ945 in participants with ALS. Cohorts 1-4 are not randomized, while Cohort 5 is randomized in open label two treatment arms. Cohorts 1-4 have single group design and Cohort 5 has parallel design.

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

* Able to communicate well with the investigator, to understand and comply with the study visits and procedures of the study * Written informed consent must be obtained before any assessment is performed. * Male and female participants who are 18 years old or older at screening, and who are diagnosed with familial or sporadic ALS according to the World Federation of Neurology Revised El Escorial criteria of either bulbar or limb onset. * Disease duration from symptoms onset no longer than 48 months at the screening visit. * Females of childbearing potential must have a negative pregnancy test at screening and/or baseline. * Treatment with approved ALS therapies is allowed, but participants need to be on a stable dose and regimen for at least 30 days prior to baseline. * Having completed the Core Treatment Period to be able to continue in the Extended Treatment Period.

Exclusion criteria

* A history of clinically significant ECG abnormalities * Active medical or neurologic diseases other than ALS, that in the opinion of the investigator would limit their participation in the current study. * Use of other investigational drugs within 5 half-lives of screening, or until the expected PD effect has returned to baseline, whichever is longer; or longer if required by local regulations. * History of hypersensitivity to any of the study treatments or excipients or to drugs of similar chemical classes. * Presence of human immunodeficiency virus (HIV) infection based on screening lab results. * Evidence of active or latent tuberculosis as assessed by Quantiferon testing at the screening visit. * Positive serology for hepatitis B surface antigen, or hepatitis C antibodies confirmed by an appropriate licensed test at screening. * Signs or symptoms, in the judgement of the investigator, of a clinically significant systemic viral, bacterial or fungal infection within 30 days prior to the screening visit. * Cardiac disorders, such as recent cardiac history (within 6 months of screening) of acute coronary syndrome, acute heart failure, or significant ventricular arrhythmia at the screening visit or participants with a history of severe pulmonary hypertension. Participants with cardiac failure class 3 or 4 of the NYHA classification, or history of reduced LVEF or individuals with implanted cardiac pacemaker, or defibrillator. * Significant hematological laboratory abnormalities. * Clinical evidence of liver disease or liver injury or any of the following hepatic conditions at the screening visit: * Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using highly effective methods of contraception during dosing and for 14 days after last dose of BLZ945. * Pregnant or nursing female participants * Sexually active males unless they use a condom during intercourse while taking the drug during treatment, for 14 days after stopping BLZ945 and should not father a child in this period. * History or presence of impaired renal function at the screening visit. * Active suicidal ideation. * History of drug abuse or harmful alcohol use within the 12 months prior to dosing within the judgement of the investigator, or evidence of such abuse as indicated by the laboratory assays conducted during screening. * Active GI conditions such as Barrett's esophagus, achalasia, esophageal varices and active or history of esophageal cancer, pre-existing pancreatic disease at screening visit. * History of active vasculitis or history of autoimmune disease autoimmune disease associated with vasculitis (eg., RA, SLE, Sjögrens disease, scleroderma). * History or active cardiac valve disorder, congenital valve disease, or other clinical condition that might affect cardiac valve function * Use of systemic anticoagulation that cannot be temporarily paused before study procedures * Abnormal values on CT scan or echocardiography, signs of vasculitis, or evidence of a significant medical condition meeting treatment discontinuation criteria will be exclusionary for continuation in the extended treatment period. * Participants who are planning to initiate treatment with an additional approved ALS therapy in the next 24 weeks are not allowed to continue in the extended treatment period.

Design outcomes

Primary

MeasureTime frameDescription
Cohort 5: Adverse Events Related to Extracellular Matrix (ECM) AccumulationUp to Day 84Number of patients with adverse events related to ECM accumulation
Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBaseline, day 84\[11C\]-PBR28 is a positron emission tomography (PET) radiotracer for the 18 kDa translocator protein (TSPO) that is used to image neuroinflammation in vivo. \[11C\]PBR28 imaging was used to measure microglial volume at baseline and after BLZ945 treatment in ALS participants. Relative % change from baseline in volume of distribution (Vt) of \[11C\]-PBR28 in different brain regions after BLZ945 treatment
Cohort 5: Change From Baseline in Esophageal Wall ThicknessBaseline, Day 84Mean change from baseline in esophageal wall thickness measured in mm
Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineBaseline, Day 84Cardiac valve thickness on a three point ordinal scale. Categorized by imaging vendor into three semiquantitative (normal, mild-moderate and severe) categories
Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineBaseline, Day 84Cardiac valve stenosis on a four point ordinal scale. Categorized by imaging vendor into four semiquantitative (normal, mild, moderate and severe) categories
Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineBaseline, Day 84Cardiac valve regurgitation severity on a four point ordinal scale. Categorized by imaging vendor into four semiquantitative (normal, mild, moderate and severe) categories
Cohort 5: Change From Baseline in Left Ventricular Ejection Fraction (LVEF)Baseline, day 84Mean change from baseline in Left Ventricular Ejection Fraction. LVEF is defined as the percentage of blood volume ejected from the left ventricle during systole (contraction phase) relative to the total volume of blood present in the ventricle at the end of diastole (relaxation phase).
Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBaseline, day 5\[11C\]-PBR28 is a positron emission tomography (PET) radiotracer for the 18 kDa translocator protein (TSPO) that is used to image neuroinflammation in vivo. \[11C\]PBR28 imaging was used to measure microglial volume at baseline and after BLZ945 treatment in ALS participants. Relative % change from baseline in volume of distribution (Vt) of \[11C\]-PBR28 in different brain regions after BLZ945 treatment

Secondary

MeasureTime frameDescription
Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxCohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4. Cohort 5: pre-dose, 1, 2 and 4 hours after BLZ945 dosing on Day 1 (Arm#2 only) and Day 4 (Arm#1 only)Measured by Cmax - The maximum plasma concentration of BLZ945
Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxCohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4. Cohort 5: pre-dose, 1, 2 and 4 hours after BLZ945 dosing on Day 1 (Arm#2 only) and Day 4 (Arm#1 only)Measured by Tmax - Time to Reach the Maximum Concentration After Drug Administration of BLZ945. Actual recorded sampling times were taken into consideration for the calculation of PK parameters.
Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCCohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4. Cohort 5: pre-dose, 1, 2 and 4 hours after BLZ945 dosing on Day 1 (Arm#2 only) and Day 4 (Arm#1 only)Measured by AUC - Area under the curve of BLZ945 AUC0-24h is the AUC calculated from time zero to 24 hours after dosing (end of a dosing interval). AUClast is the AUC from time zero to the last measurable concentration sampling time.
Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Cohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4.Measured by T1/2 - The elimination half-life of BLZ945
Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)From first dose of study treatment up to 32 days after last dose (Day 36) for Cohorts 1-4 and up to 4 weeks after last dose (Day 330) for Cohort 5. *Maximum duration of exposure in Cohort 5 was 302 days. 302 + 28 days of FU=330 daysIncidence and severity of AEs and SAEs by treatment group. AE grades to characterize the severity of the AEs were based on the Common Terminology Criteria for Adverse Events (CTCAE) version 5. For CTCAE, Grade 1 = mild; Grade 2 = moderate; Grade 3 = severe; Grade 4 = life-threatening; Grade 5 = death related to AE
Cohorts 1-4: Renal Clearance (CLR) of BLZ945pre-dose, 0-4, 4-8, 8-12 and 12-24 hours after BLZ945 dosing on Day 1 and Day 4Urine renal clearance (CLR) of BLZ945

Countries

Finland, Sweden, United States

Participant flow

Pre-assignment details

There was a screening and baseline period of up to 42 days for part 1 (Cohorts1-4) and of 6 weeks for part 2 (Cohort 5)

Participants by arm

ArmCount
BLZ945 300mg - Cohort 1 (Part 1)
BLZ945 300mg
4
BLZ945 600mg - Cohort 2 (Part 1)
BLZ945 600mg
4
BLZ945 800mg - Cohort 4 (Part 1)
BLZ945 800mg
4
BLZ945 1200mg - Cohort 3 (Part 1)
BLZ945 1200mg
4
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)
BLZ945 800mg (4 days on/10 days off)
6
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)
BLZ945 800mg (once weekly)
6
Total28

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Part 2 (Cohort 5)Adverse Event000001
Part 2 (Cohort 5)Death000002
Part 2 (Cohort 5)Study terminated by sponsor000001
Part 2 (Cohort 5)Withdrawal by Subject000010

Baseline characteristics

CharacteristicBLZ945 300mg - Cohort 1 (Part 1)TotalBLZ945 800mg - Cohort 5 Arm #2 (Part 2)BLZ945 800mg - Cohort 5 Arm #1 (Part 2)BLZ945 1200mg - Cohort 3 (Part 1)BLZ945 800mg - Cohort 4 (Part 1)BLZ945 600mg - Cohort 2 (Part 1)
Age, Continuous50.5 years60.5 years62.5 years55.5 years64 years65.5 years59.5 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
White
4 Participants27 Participants6 Participants6 Participants4 Participants4 Participants3 Participants
Sex: Female, Male
Female
2 Participants10 Participants2 Participants1 Participants2 Participants1 Participants2 Participants
Sex: Female, Male
Male
2 Participants18 Participants4 Participants5 Participants2 Participants3 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
deaths
Total, all-cause mortality
0 / 40 / 40 / 40 / 40 / 62 / 62 / 28
other
Total, other adverse events
2 / 42 / 44 / 44 / 46 / 66 / 624 / 28
serious
Total, serious adverse events
0 / 40 / 40 / 41 / 40 / 64 / 65 / 28

Outcome results

Primary

Cohort 5: Adverse Events Related to Extracellular Matrix (ECM) Accumulation

Number of patients with adverse events related to ECM accumulation

Time frame: Up to Day 84

Population: Full analysis set, participants in cohort 5 that received any study drug

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Adverse Events Related to Extracellular Matrix (ECM) Accumulation2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Adverse Events Related to Extracellular Matrix (ECM) Accumulation2 Participants
Primary

Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to Baseline

Cardiac valve regurgitation severity on a four point ordinal scale. Categorized by imaging vendor into four semiquantitative (normal, mild, moderate and severe) categories

Time frame: Baseline, Day 84

Population: Full analysis set, participants in cohort 5 that received any study drug with a valid assessment for the outcome measure

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - Day 84Mild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - BaselineMild1 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - Day 84Mild2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - BaselineMild3 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - BaselineNormal3 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - BaselineNormal3 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - BaselineMild3 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - BaselineNormal3 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - BaselineMild3 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - Day 84Mild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - Day 84Normal0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - Day 84Normal1 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - BaselineNormal5 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - Day 84Mild1 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - Day 84Mild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - BaselineNormal3 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - BaselineMild3 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - Day 84Normal1 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - Day 84Mild01 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - BaselineNormal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - Day 84Mild1 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineAortic valve - BaselineMild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineMitral valve - Day 84Mild1 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - BaselineNormal4 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - BaselineMild2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselinePulmonary valve - Day 84Normal1 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - BaselineMild4 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Regurgitation Severity at Day 84 Compared to BaselineTricuspid valve - Day 84Normal1 Participants
Primary

Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to Baseline

Cardiac valve stenosis on a four point ordinal scale. Categorized by imaging vendor into four semiquantitative (normal, mild, moderate and severe) categories

Time frame: Baseline, Day 84

Population: Full analysis set, participants in cohort 5 that received any study drug with a valid assessment for the outcome measure

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - Day 84Mild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve - BaselineMild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Mild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - Day 84Mild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - BaselineMild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - Day 84Mild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - BaselineMild0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - BaselineMild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - Day 84Mild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - BaselineMild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - Day 84Mild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - BaselineMild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve - BaselineMild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - Day 84Mild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Mild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - BaselineMild0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineTricuspid valve - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineMitral valve - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Stenosis at Day 84 Compared to BaselineAortic valve - BaselineNormal6 Participants
Primary

Cohort 5: Cardiac Valve Thickness at Day 84 Compared to Baseline

Cardiac valve thickness on a three point ordinal scale. Categorized by imaging vendor into three semiquantitative (normal, mild-moderate and severe) categories

Time frame: Baseline, Day 84

Population: Full analysis set, participants in cohort 5 that received any study drug with a valid assessment for the outcome measure

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - BaselineMild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - BaselineMild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - BaselineMild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - BaselineNormal6 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - BaselineMild- Moderate0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - Day 84Normal2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - BaselineMild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - BaselineMild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - BaselineMild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - BaselineMild- Moderate1 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineAortic valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselinePulmonary valve thickness - Day 84Mild- Moderate0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - Day 84Normal2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineTricuspid valve thickness - BaselineNormal6 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Cardiac Valve Thickness at Day 84 Compared to BaselineMitral valve thickness - BaselineNormal5 Participants
Primary

Cohort 5: Change From Baseline in Esophageal Wall Thickness

Mean change from baseline in esophageal wall thickness measured in mm

Time frame: Baseline, Day 84

Population: Full analysis set, participants in cohort 5 that received any study drug with a valid assessment for the outcome measure

ArmMeasureGroupValue (MEAN)Dispersion
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessWall thickness average0.258 mmStandard Deviation 0.799
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessMiddle third Wall Thickness0.235 mmStandard Deviation 0.0212
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessUpper third Wall Thickness0.500 mmStandard Deviation 1.4284
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessLower third Wall Thickness0.040 mmStandard Deviation 0.9475
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessMiddle third Wall Thickness2.795 mmStandard Deviation 2.6234
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessWall thickness average0.758 mmStandard Deviation 2.1708
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessLower third Wall Thickness-1.400 mmStandard Deviation 2.9981
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Change From Baseline in Esophageal Wall ThicknessUpper third Wall Thickness0.880 mmStandard Deviation 0.891
Primary

Cohort 5: Change From Baseline in Left Ventricular Ejection Fraction (LVEF)

Mean change from baseline in Left Ventricular Ejection Fraction. LVEF is defined as the percentage of blood volume ejected from the left ventricle during systole (contraction phase) relative to the total volume of blood present in the ventricle at the end of diastole (relaxation phase).

Time frame: Baseline, day 84

Population: Full analysis set, participants in cohort 5 that received any study drug with a valid assessment for the outcome measure

ArmMeasureValue (MEAN)Dispersion
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5: Change From Baseline in Left Ventricular Ejection Fraction (LVEF)1.533 Percentage of LVEFStandard Deviation 2.9713
BLZ945 600mg - Cohort 2 (Part 1)Cohort 5: Change From Baseline in Left Ventricular Ejection Fraction (LVEF)5.021 Percentage of LVEFStandard Deviation 2.0796
Primary

Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET Scan

\[11C\]-PBR28 is a positron emission tomography (PET) radiotracer for the 18 kDa translocator protein (TSPO) that is used to image neuroinflammation in vivo. \[11C\]PBR28 imaging was used to measure microglial volume at baseline and after BLZ945 treatment in ALS participants. Relative % change from baseline in volume of distribution (Vt) of \[11C\]-PBR28 in different brain regions after BLZ945 treatment

Time frame: Baseline, day 84

Population: PD analysis set, all participants in cohort 5 with available PD data and no protocol deviations with relevant impact on PD data and with a valid assessment of the outcome measure.

ArmMeasureGroupValue (MEAN)
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBrain Stem - day 84-26.10 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellar White Matter - day 84-22.40 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellum - day 84-19.40 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanFrontal Lobe - day 84-21.53 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanOccipital Lobe - day 84-17.76 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanThalamus - day 84-29.39 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanWhole Brain - day 84-20.51 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanPrecentral gyrus - day 84-21.95 Percent change from baseline
BLZ945 300mg - Cohort 1 (Part 1)Cohort 5 (PET Sub-study): Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBasal Ganglia - day 84-17.80 Percent change from baseline
Primary

Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET Scan

\[11C\]-PBR28 is a positron emission tomography (PET) radiotracer for the 18 kDa translocator protein (TSPO) that is used to image neuroinflammation in vivo. \[11C\]PBR28 imaging was used to measure microglial volume at baseline and after BLZ945 treatment in ALS participants. Relative % change from baseline in volume of distribution (Vt) of \[11C\]-PBR28 in different brain regions after BLZ945 treatment

Time frame: Baseline, day 5

Population: PD analysis set, all participants in cohorts 1-4 with available PD data and no protocol deviations with relevant impact on PD data and with a valid assessment of the outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanThalamus - day 5-8.00 Percent change from baselineStandard Deviation 22.581
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellum - day 5-3.53 Percent change from baselineStandard Deviation 20.459
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBrain Stem - day 5-7.10 Percent change from baselineStandard Deviation 20.89
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellar White Matter - day 5-4.41 Percent change from baselineStandard Deviation 20.678
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBasal Ganglia - day 5-3.70 Percent change from baselineStandard Deviation 22.729
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanWhole Brain - day 5-0.95 Percent change from baselineStandard Deviation 26.606
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanOccipital Lobe - day 5-3.01 Percent change from baselineStandard Deviation 23.217
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanFrontal Lobe - day 51.33 Percent change from baselineStandard Deviation 30.101
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanPrecentral gyrus - day 50.67 Percent change from baselineStandard Deviation 33.825
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellar White Matter - day 5-14.11 Percent change from baselineStandard Deviation 11.904
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanOccipital Lobe - day 5-11.50 Percent change from baselineStandard Deviation 10.457
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanWhole Brain - day 5-15.59 Percent change from baselineStandard Deviation 14.716
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBrain Stem - day 5-10.00 Percent change from baselineStandard Deviation 13.464
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanPrecentral gyrus - day 5-20.33 Percent change from baselineStandard Deviation 16.458
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellum - day 5-10.06 Percent change from baselineStandard Deviation 8.365
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBasal Ganglia - day 5-15.18 Percent change from baselineStandard Deviation 16.343
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanFrontal Lobe - day 5-18.67 Percent change from baselineStandard Deviation 15.881
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanThalamus - day 5-14.85 Percent change from baselineStandard Deviation 13.466
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanOccipital Lobe - day 514.18 Percent change from baselineStandard Deviation 36.595
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanWhole Brain - day 512.22 Percent change from baselineStandard Deviation 34.922
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanThalamus - day 513.89 Percent change from baselineStandard Deviation 42.938
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanFrontal Lobe - day 59.10 Percent change from baselineStandard Deviation 29.745
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBasal Ganglia - day 513.27 Percent change from baselineStandard Deviation 35.504
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellar White Matter - day 527.65 Percent change from baselineStandard Deviation 60.112
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBrain Stem - day 550.56 Percent change from baselineStandard Deviation 100.838
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanPrecentral gyrus - day 59.90 Percent change from baselineStandard Deviation 31.57
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellum - day 517.52 Percent change from baselineStandard Deviation 44.628
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanWhole Brain - day 5-7.72 Percent change from baselineStandard Deviation 0.326
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanPrecentral gyrus - day 5-9.63 Percent change from baselineStandard Deviation 1.516
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBasal Ganglia - day 5-10.73 Percent change from baselineStandard Deviation 5.872
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanBrain Stem - day 5-16.69 Percent change from baselineStandard Deviation 61.674
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellar White Matter - day 5-16.87 Percent change from baselineStandard Deviation 4.874
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanCerebellum - day 5-11.78 Percent change from baselineStandard Deviation 3.854
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanFrontal Lobe - day 5-9.70 Percent change from baselineStandard Deviation 0.224
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanOccipital Lobe - day 5-5.87 Percent change from baselineStandard Deviation 0.292
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4 : Change From Baseline in Volume of Distribution (Vt) in Different Brain Regions for [11C]-PBR28 PET ScanThalamus - day 5-14.14 Percent change from baselineStandard Deviation 3.521
Secondary

Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2

Measured by T1/2 - The elimination half-life of BLZ945

Time frame: Cohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4.

Population: Participants in the PK analysis set with an available value for the outcome measure at the corresponding timepoint.~The PK analysis set included all participants with at least one available valid PK concentration measurement, who received any study drug, and had no protocol deviations that impacted on PK data.

ArmMeasureGroupValue (MEAN)
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 1NA Hours
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 4NA Hours
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 4NA Hours
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 1NA Hours
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 1NA Hours
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 4NA Hours
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 1NA Hours
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4: Plasma Pharmacokinetics (PK) of BLZ945 - T1/2Day 4NA Hours
Secondary

Cohorts 1-4: Renal Clearance (CLR) of BLZ945

Urine renal clearance (CLR) of BLZ945

Time frame: pre-dose, 0-4, 4-8, 8-12 and 12-24 hours after BLZ945 dosing on Day 1 and Day 4

Population: PK analysis set, participants with at least one available valid PK concentration measurement , who received any study drug, and had no protocol deviations that impact on PK data

ArmMeasureGroupValue (MEAN)Dispersion
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 10.00597 liter/hour (L/hr)Standard Deviation 0.00184
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 40.00667 liter/hour (L/hr)Standard Deviation 0.00127
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 40.00410 liter/hour (L/hr)Standard Deviation 0.00205
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 10.00844 liter/hour (L/hr)Standard Deviation 0.00675
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 10.00466 liter/hour (L/hr)Standard Deviation 0.00312
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 40.00362 liter/hour (L/hr)Standard Deviation 0.00262
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 10.0213 liter/hour (L/hr)Standard Deviation 0.0258
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-4: Renal Clearance (CLR) of BLZ945Day 40.00550 liter/hour (L/hr)Standard Deviation 0.00129
Secondary

Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)

Incidence and severity of AEs and SAEs by treatment group. AE grades to characterize the severity of the AEs were based on the Common Terminology Criteria for Adverse Events (CTCAE) version 5. For CTCAE, Grade 1 = mild; Grade 2 = moderate; Grade 3 = severe; Grade 4 = life-threatening; Grade 5 = death related to AE

Time frame: From first dose of study treatment up to 32 days after last dose (Day 36) for Cohorts 1-4 and up to 4 weeks after last dose (Day 330) for Cohort 5. *Maximum duration of exposure in Cohort 5 was 302 days. 302 + 28 days of FU=330 days

Population: Full analysis set

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 22 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 12 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs leading to discontinuation of study treatment0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 30 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Serious AEs0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study-drug related AEs leading to discontinuation of study treatment0 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study drug-related AEs2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Total AEs2 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 50 Participants
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 40 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 12 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Serious AEs0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 30 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Total AEs2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study drug-related AEs2 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs leading to discontinuation of study treatment0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 21 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 50 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study-drug related AEs leading to discontinuation of study treatment0 Participants
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 40 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study drug-related AEs2 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study-drug related AEs leading to discontinuation of study treatment0 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Total AEs4 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 14 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs leading to discontinuation of study treatment0 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 22 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 30 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 40 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 50 Participants
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Serious AEs0 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Serious AEs1 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 14 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 50 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 40 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs leading to discontinuation of study treatment0 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Total AEs4 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 23 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study drug-related AEs3 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 32 Participants
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study-drug related AEs leading to discontinuation of study treatment0 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Total AEs6 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 15 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 25 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 31 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 40 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 50 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study drug-related AEs5 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Serious AEs0 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs leading to discontinuation of study treatment0 Participants
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study-drug related AEs leading to discontinuation of study treatment0 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Total AEs6 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Serious AEs4 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 25 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 16 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 41 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study-drug related AEs leading to discontinuation of study treatment3 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs leading to discontinuation of study treatment4 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)Study drug-related AEs5 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 52 Participants
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs)AE of grade 35 Participants
Secondary

Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUC

Measured by AUC - Area under the curve of BLZ945 AUC0-24h is the AUC calculated from time zero to 24 hours after dosing (end of a dosing interval). AUClast is the AUC from time zero to the last measurable concentration sampling time.

Time frame: Cohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4. Cohort 5: pre-dose, 1, 2 and 4 hours after BLZ945 dosing on Day 1 (Arm#2 only) and Day 4 (Arm#1 only)

Population: Participants in the PK analysis set with an available value for the outcome measure at the corresponding timepoint.~The PK analysis set included all participants with at least one available valid PK concentration measurement, who received any study drug, and had no protocol deviations that impacted on PK data.

ArmMeasureGroupValue (MEAN)Dispersion
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 4175000 hour * ng/mLStandard Deviation 14100
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 4170000 hour * ng/mLStandard Deviation 20300
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 192600 hour * ng/mLStandard Deviation 2750
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 193000 hour * ng/mLStandard Deviation 2510
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 1203000 hour * ng/mLStandard Deviation 26800
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 1204000 hour * ng/mLStandard Deviation 28000
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 4401000 hour * ng/mLStandard Deviation 88700
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 4399000 hour * ng/mLStandard Deviation 87800
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 4535000 hour * ng/mLStandard Deviation 157000
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 1277000 hour * ng/mLStandard Deviation 99500
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 1278000 hour * ng/mLStandard Deviation 49600
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 4533000 hour * ng/mLStandard Deviation 158000
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 4671000 hour * ng/mLStandard Deviation 43400
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 1391000 hour * ng/mLStandard Deviation 10600
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUC 0-24h - Day 4680000 hour * ng/mLStandard Deviation 48300
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 134100 hour * ng/mLStandard Deviation 91100
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 473400 hour * ng/mLStandard Deviation 7710
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - AUCAUClast - Day 156900 hour * ng/mLStandard Deviation 21400
Secondary

Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - Cmax

Measured by Cmax - The maximum plasma concentration of BLZ945

Time frame: Cohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4. Cohort 5: pre-dose, 1, 2 and 4 hours after BLZ945 dosing on Day 1 (Arm#2 only) and Day 4 (Arm#1 only)

Population: Participants in the PK analysis set with an available value for the outcome measure at the corresponding timepoint.~The PK analysis set included all participants with at least one available valid PK concentration measurement, who received any study drug, and had no protocol deviations that impacted on PK data.

ArmMeasureGroupValue (MEAN)Dispersion
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 16850 ng/mL of BLZ945Standard Deviation 780
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 412100 ng/mL of BLZ945Standard Deviation 2300
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 116000 ng/mL of BLZ945Standard Deviation 2510
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 425900 ng/mL of BLZ945Standard Deviation 3440
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 121100 ng/mL of BLZ945Standard Deviation 5630
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 430700 ng/mL of BLZ945Standard Deviation 7800
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 437600 ng/mL of BLZ945Standard Deviation 4270
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 125900 ng/mL of BLZ945Standard Deviation 2630
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 422400 ng/mL of BLZ945Standard Deviation 3120
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - CmaxDay 119900 ng/mL of BLZ945Standard Deviation 5990
Secondary

Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - Tmax

Measured by Tmax - Time to Reach the Maximum Concentration After Drug Administration of BLZ945. Actual recorded sampling times were taken into consideration for the calculation of PK parameters.

Time frame: Cohort 1-4: Pre-dose, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after BLZ945 dosing on Day 1 and Day 4. Cohort 5: pre-dose, 1, 2 and 4 hours after BLZ945 dosing on Day 1 (Arm#2 only) and Day 4 (Arm#1 only)

Population: Participants in the PK analysis set with an available value for the outcome measure at the corresponding timepoint.~The PK analysis set included all participants with at least one available valid PK concentration measurement, who received any study drug, and had no protocol deviations that impacted on PK data.

ArmMeasureGroupValue (MEDIAN)
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 11.02 hours
BLZ945 300mg - Cohort 1 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 41.01 hours
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 12.01 hours
BLZ945 600mg - Cohort 2 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 41.50 hours
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 43.00 hours
BLZ945 800mg - Cohort 4 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 12.01 hours
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 42.02 hours
BLZ945 1200mg - Cohort 3 (Part 1)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 11.00 hours
BLZ945 800mg - Cohort 5 Arm #1 (Part 2)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 41.49 hours
BLZ945 800mg - Cohort 5 Arm #2 (Part 2)Cohorts 1-5: Plasma Pharmacokinetics (PK) of BLZ945 - TmaxDay 12.00 hours

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026