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CX-8998 for Absence Seizures

A Phase 2a, Safety, Tolerability, Pharmacokinetics, and Quantitative EEG Study of CX-8998 in Adolescents and Adults With Idiopathic Generalized Epilepsy With Absence Seizures

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03406702
Acronym
T-WAVE
Enrollment
7
Registered
2018-01-23
Start date
2018-02-25
Completion date
2019-03-29
Last updated
2022-09-08

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

Conditions

Epilepsy

Keywords

Epilepsy, Idiopathic Generalized Epilepsy, Absence Seizures

Brief summary

This is a Phase 2a, open-label study consisting of a screening period of up to 4 weeks and a 4-dose-titration treatment period to a dose of up to 10 mg twice daily (BID) of CX-8998, followed by a 1-week safety follow-up period after the last dose of study medication.

Detailed description

This is a Phase 2a, open-label study consisting of a screening period of up to 4 weeks and a 4-dose-titration treatment period to a dose of up to 10 mg twice daily (BID) of CX-8998, followed by a 1-week safety follow-up period after the last dose of study medication. Subjects will participate for a total of up to 9 weeks, including screening, the 4-week treatment period and follow-up.

Interventions

T-type calcium channel blocker

Sponsors

Jazz Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
16 Years to 55 Years
Healthy volunteers
No

Inclusion criteria

1. Signed informed consent form (ICF) indicating that the subject has been informed of the procedures to be followed, the experimental nature of the therapy, alternatives, potential benefits, side effects, risks, and discomforts. 2. Men or non-pregnant, non-breastfeeding women 16 to 55 years-of-age who are able to read and understand written and spoken local language. 3. Clinical diagnosis of IGE (including, but not limited to, CAE, JAE, juvenile myoclonic epilepsy, or Jeavons syndrome) with absence seizures consistent with the International League against Epilepsy Revised Classification of Seizures (2017). 4. Absence seizures persisting despite standard of care (SOC) treatment, defined as treatment with at least 2 AEDs appropriate for the patient's epilepsy syndrome. SOC failure, per investigator discretion, will be defined as insufficient clinical response or intolerable side effects, which precludes use of the appropriate AED. 5. Observation of at least 3 instances of generalized discharges of approximately 2.5 - 4 Hz lasting ≥2 seconds via 24-hour ambulatory EEG (centrally reviewed), with approximately 75% normal background based on age and medication use per the central EEG reader's discretion. Intermittent focal spikes are allowed. 6. On stable doses of one or more antiepileptic medication(s) for at least 30 days. If a subject is not on medication, adequate documentation justifying lack of therapy may be acceptable for the subject after sponsor review. Ketogenic, modified Atkins diet (MAD), or low glycemic diet with stable carbohydrate ratio for at least 30 days before screening is an acceptable antiepileptic therapy. Vagal nerve stimulation at stable settings (for at least 30 days before screening), without use of the magnet, is also acceptable. 7. Body weight ≥ 45 kg at screening. 8. Subjects with reproductive capability including all males and women of child-bearing potential (WOCBP) must agree to practice continuous abstinence or adequate contraception methods (appropriate double barrier method or oral, patch, implant, or injectable contraception) from as soon as feasible during screening period until at least 30 days after the last dose (i.e., intermittent abstinence based on rhythm, temperature monitoring, or other means of timing is not acceptable). WOCBP include any woman who has experienced menarche and who has not undergone successful surgical sterilization (hysterectomy, bilateral tubal ligation, and/or bilateral oophorectomy) or is not post-menopausal. Post-menopausal is defined as amenorrhea ≥ 12 consecutive months without another cause, and a documented serum follicle stimulating hormone (FSH) level ≥ 35 mIU/mL. 9. Male subjects with a partner of child-bearing potential must be surgically sterilized or be willing to use condoms with spermicide from as soon as feasible during screening period until at least 30 days after the last dose. 10. Able and willing to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures. 11. Approval by the sponsor medical personnel or delegate as to final eligibility for the study.

Exclusion criteria

1. History of surgical intervention for treatment of epilepsy. 2. Additional seizure (clinical and electrographic) types, including, but not limited to, epileptic spasms, generalized tonic seizures, atonic seizures, or focal seizures. Subjects with GTCS or myoclonic seizures are eligible for the study. 3. Inadequately treated psychotic or mood disorder (e.g., schizophrenia, major depression, bipolar disorder). 4. Presence of severe intellectual disability, severe autism spectrum disorder, or severe developmental disorder such that the subject cannot sign the ICF or cannot cooperate with the study procedures. 5. Presence of positive urine drug screen for drugs of abuse, except if this is explained by use of an allowed prescription medicine. 6. Regular use of more than 2 standard drinks of alcohol per day (28 grams of pure alcohol). 7. Hypersensitivity/allergic reaction to other T-type calcium agents, such as (but not limited to) ethosuximide and zonisamide. 8. Use of strong CYP3A4 inhibitors, including prescription or non-prescription drugs or other products (i.e. grapefruit juice), which cannot be discontinued at least 2 weeks prior to Day 1 of dosing and throughout the study (Appendix C). 9. Concurrent illnesses that would be a contraindication to trial participation, including, but not limited to: 1. Severe arterial thromboembolic events (myocardial infarction, unstable angina pectoris, stroke) less than 6 months before screening 2. NYHA Class III or IV congestive heart failure, ventricular arrhythmias or uncontrolled hypertension 3. Clinically significant ECG abnormality per the Investigator assessment or any of the following: i) QTcF ≥450 msec (males) or ≥470 msec (females) ii) PR interval ≥250 msec iii) Atrioventricular block of second degree or higher, including Mobitz I iv) Persistent sinus bradycardia ≤ 50 beats per minute; persistent means the bradycardia is present on the first ECG and on one repeat ECG performed on another day v) For other ECG findings (e.g., including, but not necessarily limited to, tachycardia, bundle branch block, frequent ectopic beats, etc.) the Investigator should send a scanned, identity-blinded copy of the ECG tracing to the Study Safety Representative for review. 10. Positive result for HIV, Hepatitis B \[indicating ongoing infection\], or Hepatitis C at screening or otherwise known ongoing infection with HIV, hepatitis B, or hepatitis C, unless curative therapy completed; for hepatitis C curative therapy is defined as negative PCR for HCV RNA. 11. Significant hepatic (AST/ALT or bilirubin ≥ 2X upper limit of normal) or renal disease (creatinine clearance ≤39 mL/min) at screening. 12. History of alcohol or substance abuse within the last year. 13. A current C-SSRS score of 4 or 5 at screening or history of suicide attempt. 14. Psychological, social, familial, or geographical reasons that would hinder or prevent compliance with the requirements of the protocol or compromise the informed consent process. 15. Any other condition and/or situation that causes the Investigator or Study Safety Representative to deem a subject unsuitable for the study (including, but not limited to, expected study medication non-compliance, inability to medically tolerate the study procedures, or a subject's unwillingness to comply with study-related procedures). 16. Treatment with an investigational agent within 30 days prior to the first dose of CX-8998 or planning to receive an investigational agent during the study.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline to End of Treatment in QT Interval Corrected for Heart Rate Using Fridericia's Formula (QTcF)Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.Fridericia's Correction Formula (QTCF) is a formula which takes into account the physiologic shortening of the QT interval which occurs as the heart rate increases, permitting comparison of the QT interval across a range of rates.
Change From Baseline to End of Treatment in Clinical Alanine Aminotransferase Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in alanine aminotransferase serum chemistry concentration.
Change From Baseline to End of Treatment in Clinical Albumin Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in albumin serum chemistry.
Change From Baseline to End of Treatment in Clinical Albumin/Globulin Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in albumin/globulin serum chemistry.
Change From Baseline to End of Treatment in Clinical Alkaline Phosphatase Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in alkaline phosphatase serum chemistry.
Change From Baseline to End of Treatment in Clinical Aspartate Aminotransferase Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in aspartate aminotransferase serum chemistry.
Baseline Clinical Blood Urea Nitrogen/Creatinine Serum Chemistry ConcentrationBaseline (Day 1)Clinical safety laboratory assessment in BUN/Creatinine serum chemistry.
Change From Baseline to End of Treatment in Clinical Bilirubin Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in bilirubin serum chemistry.
Change From Baseline to End of Treatment in Clinical Blood Urea Nitrogen Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in blood urea nitrogen serum chemistry.
Change From Baseline to End of Treatment in Clinical Carbon Dioxide Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in carbon dioxide serum chemistry.
Change From Baseline to End of Treatment in Clinical Chloride Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in chloride serum chemistry.
Change From Baseline to End of Treatment in Clinical Calcium Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in calcium serum chemistry.
Change From Baseline to End of Treatment in Clinical Cholesterol Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in cholesterol serum chemistry.
Baseline Clinical Cholesterol/HDL-Cholesterol Serum Chemistry ConcentrationBaseline (Day 1)Clinical safety laboratory assessment in cholesterol/HDL-cholesterol serum chemistry.
Change From Baseline to End of Treatment in Clinical Creatine Kinase Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in creatine kinase serum chemistry.
Change From Baseline to End of Treatment in Clinical Creatinine Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in creatinine serum chemistry.
Change From Baseline to End of Treatment in Clinical Globulin Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in globulin serum chemistry.
Baseline Clinical Glomerular Filtration Rate (GFR) Adjusted for Body Surface Area (BSA) Serum Chemistry ConcentrationBaseline (Day 1)Clinical safety laboratory assessment in glomerular filtration rate adjusted for BSA chemistry.
Change From Baseline to End of Treatment in Clinical Estimated Glomerular Filtration Rate (GFR) Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in GFR serum chemistry.
Baseline Clinical Non-HDL Cholesterol Serum Chemistry ConcentrationBaseline (Day 1)Clinical safety laboratory assessment in non-HDL cholesterol serum chemistry.
Change From Baseline to End of Treatment in Clinical Glucose Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in glucose serum chemistry.
Baseline Clinical HDL Cholesterol Serum Chemistry ConcentrationBaseline (Day 1)Clinical safety laboratory assessment in HDL cholesterol serum chemistry.
Baseline Clinical LDL Cholesterol Serum Chemistry ConcentrationBaseline (Day 1)Clinical safety laboratory assessment in LDL cholesterol serum chemistry.
Change From Baseline to End of Treatment in Clinical Lactate Dehydrogenase Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in lactate dehydrogenase serum chemistry.
Change From Baseline to End of Treatment in Clinical Magnesium Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in magnesium serum chemistry.
Change From Baseline to End of Treatment in Clinical Phosphate Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in phosphate serum chemistry.
Change From Baseline to End of Treatment in Clinical Potassium Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in potassium serum chemistry.
Change From Baseline to End of Treatment in Clinical Protein Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in protein serum chemistry.
Change From Baseline to End of Treatment in Clinical Sodium Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in sodium serum chemistry.
Change From Baseline to End of Treatment in Clinical Triglycerides Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in triglycerides serum chemistry.
Change From Baseline to End of Treatment in Clinical Urate Serum Chemistry ConcentrationBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory assessment in urate serum chemistry.
Change From Baseline to End of Treatment in Basophils Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory basophils hematology assessment.
Change From Baseline to End of Treatment in Basophils/Leukocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory basophils/leukocytes hematology assessment.
Change From Baseline to End of Treatment in Eosinophils Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory eosinophils hematology assessment.
Change From Baseline to End of Treatment in Eosinophils/Leukocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory eosinophils/leukocytes hematology assessment.
Change From Baseline to End of Treatment in Mean Corpuscular Hemoglobin (HGB) Concentration Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory mean corpuscular HGB concentration hematology assessment.
Change From Baseline to End of Treatment in Mean Corpuscular Hemoglobin (HGB) Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory mean corpuscular HGB hematology assessment.
Change From Baseline to End of Treatment in Mean Corpuscular Volume Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory mean corpuscular volume hematology assessment.
Change From Baseline to End of Treatment in Erythrocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory erythrocytes hematology assessment.
Change From Baseline to End of Treatment in Erythrocytes Distribution Width Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory erythrocytes distribution width hematology assessment.
Change From Baseline to End of Treatment in Hematocrit Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory hematocrit hematology assessment.
Change From Baseline to End of Treatment in Hemaglobin Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory hemaglobin hematology assessment.
Change From Baseline to End of Treatment in Leukocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory leukocytes hematology assessment.
Change From Baseline to End of Treatment in Lymphocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory lymphocytes hematology assessment.
Change From Baseline to End of Treatment in Lymphocytes/Leukocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory lymphocytes/leukocytes hematology assessment.
Change From Baseline to End of Treatment in Mean Platelet Volume Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory mean platelet volume hematology assessment.
Change From Baseline to End of Treatment in Monocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory monocytes hematology assessment.
Baseline to End of Treatment in Bacteria Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory bacteria urinalysis assessment.
Baseline to End of Treatment in Urine Bilirubin Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory urine bilirubin urinalysis assessment.
Change From Baseline to End of Treatment in Monocytes/Leukocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory monocytes/leukocytes hematology assessment.
Change From Baseline to End of Treatment in Neutrophils Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory neutrophils hematology assessment.
Change From Baseline to End of Treatment in Neutrophils/Leukocytes Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory neutrophils/leukocytes hematology assessment.
Change From Baseline to End of Treatment in Platelets Hematology AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory platelets hematology assessment.
Baseline to End of Treatment in Epithelial Cells Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory epithelial cells urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal range is 0-10 epithelial cells/high power field (hpf). A worse outcome is \>10 epithelial cells.
Baseline to End of Treatment in Urine Erythrocytes Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory urine erythrocytes urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal range is 0-2 erythrocytes/high power field (hpf). A better outcome is 0 or none seen.
Baseline to End of Treatment in Urine Glucose Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory urine glucose urinalysis assessment.
Baseline to End of Treatment in Ketones Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory ketones urinalysis assessment.
Baseline to End of Treatment in Leukocyte Esterase Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory leukocyte esterase urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal assessment or better outcome is negative. An abnormal assessment or worse outcome is a positive assessment (i.e., 2+).
Baseline to End of Treatment in Urine Leukocytes Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory urine leukocytes urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal range is 0-5 leukocytes/high power field (hpf). An abnormal assessment or worse outcome is \>5 leukocytes/hpf (i.e., 11-30).
Baseline to End of Treatment in Mucous Threads Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory mucous threads urinalysis assessment.
Baseline to End of Treatment in Nitrite Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory nitrite urinalysis assessment.
Baseline to End of Treatment in Occult Blood Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory occult blood urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal assessment or better outcome is negative. An abnormal assessment or worse outcome is a positive assessment (i.e., 2+).
Baseline to End of Treatment in Protein Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory protein urinalysis assessment.
Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory specific gravity urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal assessment or better outcome is 1.005-1.030. An abnormal assessment or worse outcome is a value outside of this range.
Baseline to End of Treatment in Specimen Appearance Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory specimen appearance urinalysis assessment.
Change From Baseline to End of Treatment in Urobilinogen Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory urobilinogen urinalysis assessment.
Baseline to End of Treatment in pH Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory pH urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed.
Baseline to End of Treatment in Urine Color Urinalysis AssessmentBaseline (Day 1) to end of treatment, or up to 4 weeks post-dose.Clinical safety laboratory urine color urinalysis assessment.
Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse EventsBaseline (Day 1) up to Day 26 post-dose, or up to 1 year 3 weeks.Treatment-emergent adverse events are all adverse events occurring during the treatment period or a pretreatment event that worsens in intensity during the treatment period as assessed by CTCAE v4.0.
Number (%) of Participants With Adverse Events of Special InterestBaseline (Day 1) up to Day 26 post-dose, or up to 1 year 3 weeks.An adverse event of special interest is a serious adverse event as defined in Outcome 6. This includes, however is not limited to, increased seizure frequency, new seizure types, worsening of EEG parameters, systemic adverse events based on safety profile as assessed by CTCAE v4.0.
Change From Baseline to End of Treatment in Respiration RateBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.
Change From Baseline to End of Treatment in TemperatureBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.
Baseline WeightBaseline (Day 1)
Change From Baseline to End of Treatment in PulseBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.The change from baseline to end of treatment in participants' pulses was assessed. The changes in recumbent pulse, standing pulse, and the change from recumbent to standing pulse are reported. Change from recumbent to standing pulse was measured by the difference in recumbent pulse change and standing pulse change.
Change From Baseline to End of Treatment in Systolic Blood PressureBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.The change from baseline to end of treatment in participants' systolic blood pressure (sbp) was assessed. The changes in recumbent sbp, standing sbp, and the change from recumbent to standing sbp are reported. Change from recumbent to standing sbp was measured by the difference in recumbent sbp change and standing sbp change.
Change From Baseline to End of Treatment in Diastolic Blood PressureBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.The change from baseline to end of treatment in participants' diastolic blood pressure (dbp) was assessed. The changes in recumbent dbp, standing dbp, and the change from recumbent to standing dbp are reported. Change from recumbent to standing dbp was measured by the difference in recumbent dbp change and standing dbp change.
Change From Baseline to End of Treatment in QT IntervalBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.
Change From Baseline to End of Treatment in QRS IntervalBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.
Change From Baseline to End of Treatment in PR IntervalBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.
Change From Baseline to End of Treatment in Heart RateBaseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Countries

United States

Participant flow

Pre-assignment details

Participants underwent a screening period of up to 4 weeks.

Participants by arm

ArmCount
CX-8998
Participants underwent a 4-week dose-titration treatment period up to a dose of 10 mg twice daily (BID) of suvecaltamide in the following schedule: Days 1 to 2: 2 mg BID (4 mg/d); Days 3 to 8: 4 mg BID (8 mg/d); Days 9 to 14: 6 mg BID (12 mg/d); Days 15 to 20: 8 mg BID (16 mg/d); Days 21 to 26: 10 mg BID (20 mg/d).
7
Total7

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyMissed Day 27 Dosing1

Baseline characteristics

CharacteristicCX-8998
Age, Continuous31.3 years
STANDARD_DEVIATION 8.67
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
6 Participants
Sex: Female, Male
Female
4 Participants
Sex: Female, Male
Male
3 Participants

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 / 70 / 50 / 60 / 60 / 6
other
Total, other adverse events
2 / 72 / 50 / 61 / 62 / 6
serious
Total, serious adverse events
0 / 70 / 50 / 60 / 60 / 6

Outcome results

Primary

Baseline Clinical Blood Urea Nitrogen/Creatinine Serum Chemistry Concentration

Clinical safety laboratory assessment in BUN/Creatinine serum chemistry.

Time frame: Baseline (Day 1)

Population: Clinical BUN/Creatinine serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)
CX-8998Baseline Clinical Blood Urea Nitrogen/Creatinine Serum Chemistry Concentration12.70 ratio
Primary

Baseline Clinical Cholesterol/HDL-Cholesterol Serum Chemistry Concentration

Clinical safety laboratory assessment in cholesterol/HDL-cholesterol serum chemistry.

Time frame: Baseline (Day 1)

Population: Clinical cholesterol/HDL-cholesterol serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)
CX-8998Baseline Clinical Cholesterol/HDL-Cholesterol Serum Chemistry Concentration2.40 ratio
Primary

Baseline Clinical Glomerular Filtration Rate (GFR) Adjusted for Body Surface Area (BSA) Serum Chemistry Concentration

Clinical safety laboratory assessment in glomerular filtration rate adjusted for BSA chemistry.

Time frame: Baseline (Day 1)

Population: The clinical glomerular filtration rate adjusted for BSA serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)
CX-8998Baseline Clinical Glomerular Filtration Rate (GFR) Adjusted for Body Surface Area (BSA) Serum Chemistry Concentration1.80 mL/sec/1.73m^2
Primary

Baseline Clinical HDL Cholesterol Serum Chemistry Concentration

Clinical safety laboratory assessment in HDL cholesterol serum chemistry.

Time frame: Baseline (Day 1)

Population: Clinical HDL-cholesterol serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)
CX-8998Baseline Clinical HDL Cholesterol Serum Chemistry Concentration1.35 nmol/L
Primary

Baseline Clinical LDL Cholesterol Serum Chemistry Concentration

Clinical safety laboratory assessment in LDL cholesterol serum chemistry.

Time frame: Baseline (Day 1)

Population: Clinical LDL-cholesterol serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)
CX-8998Baseline Clinical LDL Cholesterol Serum Chemistry Concentration1.50 nmol/L
Primary

Baseline Clinical Non-HDL Cholesterol Serum Chemistry Concentration

Clinical safety laboratory assessment in non-HDL cholesterol serum chemistry.

Time frame: Baseline (Day 1)

Population: Clinical LDL-cholesterol serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)
CX-8998Baseline Clinical Non-HDL Cholesterol Serum Chemistry Concentration1.84 nmol/L
Primary

Baseline to End of Treatment in Bacteria Urinalysis Assessment

Clinical safety laboratory bacteria urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Bacteria urinalysis was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Bacteria Urinalysis AssessmentBaseline (Not seen)1 Participants
CX-8998Baseline to End of Treatment in Bacteria Urinalysis AssessmentEnd of Treatment (Few)1 Participants
Primary

Baseline to End of Treatment in Epithelial Cells Urinalysis Assessment

Clinical safety laboratory epithelial cells urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal range is 0-10 epithelial cells/high power field (hpf). A worse outcome is \>10 epithelial cells.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Epithelial cells were assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Epithelial Cells Urinalysis AssessmentBaseline (0-10)1 Participants
CX-8998Baseline to End of Treatment in Epithelial Cells Urinalysis AssessmentEnd of Treatment (>10)1 Participants
Primary

Baseline to End of Treatment in Ketones Urinalysis Assessment

Clinical safety laboratory ketones urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Ketones were assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Ketones Urinalysis AssessmentBaseline (Negative)3 Participants
CX-8998Baseline to End of Treatment in Ketones Urinalysis AssessmentBaseline (Trace)1 Participants
CX-8998Baseline to End of Treatment in Ketones Urinalysis AssessmentEnd of Treatment (Negative)2 Participants
Primary

Baseline to End of Treatment in Leukocyte Esterase Urinalysis Assessment

Clinical safety laboratory leukocyte esterase urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal assessment or better outcome is negative. An abnormal assessment or worse outcome is a positive assessment (i.e., 2+).

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Leukocyte esterase was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Leukocyte Esterase Urinalysis AssessmentBaseline (Negative)4 Participants
CX-8998Baseline to End of Treatment in Leukocyte Esterase Urinalysis AssessmentEnd of Treatment (2+)1 Participants
CX-8998Baseline to End of Treatment in Leukocyte Esterase Urinalysis AssessmentEnd of Treatment (Negative)1 Participants
Primary

Baseline to End of Treatment in Mucous Threads Urinalysis Assessment

Clinical safety laboratory mucous threads urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Mucous threads were assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Mucous Threads Urinalysis AssessmentBaseline (Present)1 Participants
CX-8998Baseline to End of Treatment in Mucous Threads Urinalysis AssessmentEnd of Treatment (Present)1 Participants
Primary

Baseline to End of Treatment in Nitrite Urinalysis Assessment

Clinical safety laboratory nitrite urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Nitrite was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Nitrite Urinalysis AssessmentBaseline (Negative)4 Participants
CX-8998Baseline to End of Treatment in Nitrite Urinalysis AssessmentEnd of Treatment (Negative)2 Participants
Primary

Baseline to End of Treatment in Occult Blood Urinalysis Assessment

Clinical safety laboratory occult blood urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal assessment or better outcome is negative. An abnormal assessment or worse outcome is a positive assessment (i.e., 2+).

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Occult blood was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Occult Blood Urinalysis AssessmentBaseline (2+)1 Participants
CX-8998Baseline to End of Treatment in Occult Blood Urinalysis AssessmentBaseline (Negative)3 Participants
CX-8998Baseline to End of Treatment in Occult Blood Urinalysis AssessmentEnd of Treatment (Negative)2 Participants
Primary

Baseline to End of Treatment in pH Urinalysis Assessment

Clinical safety laboratory pH urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: pH was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in pH Urinalysis AssessmentBaseline (5)1 Participants
CX-8998Baseline to End of Treatment in pH Urinalysis AssessmentBaseline (6)1 Participants
CX-8998Baseline to End of Treatment in pH Urinalysis AssessmentBaseline (6.6)1 Participants
CX-8998Baseline to End of Treatment in pH Urinalysis AssessmentBaseline (7)1 Participants
CX-8998Baseline to End of Treatment in pH Urinalysis AssessmentEnd of Treatment (5)1 Participants
CX-8998Baseline to End of Treatment in pH Urinalysis AssessmentEnd of Treatment (5.5)2 Participants
Primary

Baseline to End of Treatment in Protein Urinalysis Assessment

Clinical safety laboratory protein urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Protein was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Protein Urinalysis AssessmentBaseline (Negative)4 Participants
CX-8998Baseline to End of Treatment in Protein Urinalysis AssessmentEnd of Treatment (Negative)2 Participants
Primary

Baseline to End of Treatment in Specific Gravity Urinalysis Assessment

Clinical safety laboratory specific gravity urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal assessment or better outcome is 1.005-1.030. An abnormal assessment or worse outcome is a value outside of this range.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Specific gravity was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentBaseline (1.015)1 Participants
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentBaseline (1.019)1 Participants
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentBaseline (1.025)1 Participants
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentBaseline (1.029)1 Participants
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentEnd of Treatment (1.023)1 Participants
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentEnd of Treatment (1.024)1 Participants
CX-8998Baseline to End of Treatment in Specific Gravity Urinalysis AssessmentEnd of Treatment (1.026)1 Participants
Primary

Baseline to End of Treatment in Specimen Appearance Urinalysis Assessment

Clinical safety laboratory specimen appearance urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Specimen appearance was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Specimen Appearance Urinalysis AssessmentBaseline (Clear)4 Participants
CX-8998Baseline to End of Treatment in Specimen Appearance Urinalysis AssessmentEnd of Treatment (Clear)1 Participants
CX-8998Baseline to End of Treatment in Specimen Appearance Urinalysis AssessmentEnd of Treatment (Cloudy)1 Participants
CX-8998Baseline to End of Treatment in Specimen Appearance Urinalysis AssessmentEnd of Treatment (Turbid)1 Participants
Primary

Baseline to End of Treatment in Urine Bilirubin Urinalysis Assessment

Clinical safety laboratory urine bilirubin urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Urine bilirubin was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Urine Bilirubin Urinalysis AssessmentBaseline (Negative)4 Participants
CX-8998Baseline to End of Treatment in Urine Bilirubin Urinalysis AssessmentEnd of Treatment (Negative)2 Participants
Primary

Baseline to End of Treatment in Urine Color Urinalysis Assessment

Clinical safety laboratory urine color urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Urine color was assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Urine Color Urinalysis AssessmentBaseline (Yellow)4 Participants
CX-8998Baseline to End of Treatment in Urine Color Urinalysis AssessmentEnd of Treatment (Yellow)2 Participants
Primary

Baseline to End of Treatment in Urine Erythrocytes Urinalysis Assessment

Clinical safety laboratory urine erythrocytes urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal range is 0-2 erythrocytes/high power field (hpf). A better outcome is 0 or none seen.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Urine erythrocytes were assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Urine Erythrocytes Urinalysis AssessmentBaseline (0-2)1 Participants
CX-8998Baseline to End of Treatment in Urine Erythrocytes Urinalysis AssessmentEnd of Treatment (None seen)1 Participants
Primary

Baseline to End of Treatment in Urine Glucose Urinalysis Assessment

Clinical safety laboratory urine glucose urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Urine glucose were assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Urine Glucose Urinalysis AssessmentBaseline (Negative)4 Participants
CX-8998Baseline to End of Treatment in Urine Glucose Urinalysis AssessmentEnd of Treatment (Negative)2 Participants
Primary

Baseline to End of Treatment in Urine Leukocytes Urinalysis Assessment

Clinical safety laboratory urine leukocytes urinalysis assessment. Shifts from baseline to normal/abnormal status were assessed. A normal range is 0-5 leukocytes/high power field (hpf). An abnormal assessment or worse outcome is \>5 leukocytes/hpf (i.e., 11-30).

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Urine leukocytes were assessed using the safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Baseline to End of Treatment in Urine Leukocytes Urinalysis AssessmentBaseline (0-5)1 Participants
CX-8998Baseline to End of Treatment in Urine Leukocytes Urinalysis AssessmentEnd of Treatment (11-30)1 Participants
Primary

Baseline Weight

Time frame: Baseline (Day 1)

Population: Weight was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Baseline Weight82.19 kgStandard Deviation 15.963
Primary

Change From Baseline to End of Treatment in Basophils Hematology Assessment

Clinical safety laboratory basophils hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical basophils were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Basophils Hematology Assessment0.02 cellsx10E9/LStandard Deviation 0.029
Primary

Change From Baseline to End of Treatment in Basophils/Leukocytes Hematology Assessment

Clinical safety laboratory basophils/leukocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical basophils/leukocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Basophils/Leukocytes Hematology Assessment0.00 ratioStandard Deviation 0.004
Primary

Change From Baseline to End of Treatment in Clinical Alanine Aminotransferase Serum Chemistry Concentration

Clinical safety laboratory assessment in alanine aminotransferase serum chemistry concentration.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical alanine aminotransferase serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Alanine Aminotransferase Serum Chemistry Concentration17.29 U/LStandard Deviation 33.604
Primary

Change From Baseline to End of Treatment in Clinical Albumin/Globulin Serum Chemistry Concentration

Clinical safety laboratory assessment in albumin/globulin serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical albumin/globulin serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Albumin/Globulin Serum Chemistry Concentration-0.15 ratioStandard Deviation 0.212
Primary

Change From Baseline to End of Treatment in Clinical Albumin Serum Chemistry Concentration

Clinical safety laboratory assessment in albumin serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical albumin serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Albumin Serum Chemistry Concentration-0.29 g/LStandard Deviation 4.152
Primary

Change From Baseline to End of Treatment in Clinical Alkaline Phosphatase Serum Chemistry Concentration

Clinical safety laboratory assessment in alkaline phosphatase serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical alkaline phosphatase serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Alkaline Phosphatase Serum Chemistry Concentration3.14 U/LStandard Deviation 10.399
Primary

Change From Baseline to End of Treatment in Clinical Aspartate Aminotransferase Serum Chemistry Concentration

Clinical safety laboratory assessment in aspartate aminotransferase serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical aspartate aminotransferase serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Aspartate Aminotransferase Serum Chemistry Concentration27.71 U/LStandard Deviation 60.81
Primary

Change From Baseline to End of Treatment in Clinical Bilirubin Serum Chemistry Concentration

Clinical safety laboratory assessment in bilirubin serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical bilirubin serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Bilirubin Serum Chemistry Concentration-0.55 umol/LStandard Deviation 2.577
Primary

Change From Baseline to End of Treatment in Clinical Blood Urea Nitrogen Serum Chemistry Concentration

Clinical safety laboratory assessment in blood urea nitrogen serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical blood urea nitrogen serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Blood Urea Nitrogen Serum Chemistry Concentration0.23 umol/LStandard Deviation 1.254
Primary

Change From Baseline to End of Treatment in Clinical Calcium Serum Chemistry Concentration

Clinical safety laboratory assessment in calcium serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical calcium serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Calcium Serum Chemistry Concentration-0.01 nmol/LStandard Deviation 0.109
Primary

Change From Baseline to End of Treatment in Clinical Carbon Dioxide Serum Chemistry Concentration

Clinical safety laboratory assessment in carbon dioxide serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical carbon dioxide serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Carbon Dioxide Serum Chemistry Concentration0.43 nmol/LStandard Deviation 2.936
Primary

Change From Baseline to End of Treatment in Clinical Chloride Serum Chemistry Concentration

Clinical safety laboratory assessment in chloride serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical chloride serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Chloride Serum Chemistry Concentration-0.86 nmol/LStandard Deviation 3.716
Primary

Change From Baseline to End of Treatment in Clinical Cholesterol Serum Chemistry Concentration

Clinical safety laboratory assessment in cholesterol serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical cholesterol serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Cholesterol Serum Chemistry Concentration0.60 nmol/LStandard Deviation 0.895
Primary

Change From Baseline to End of Treatment in Clinical Creatine Kinase Serum Chemistry Concentration

Clinical safety laboratory assessment in creatine kinase serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical creatine kinase serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Creatine Kinase Serum Chemistry Concentration1174.86 U/LStandard Deviation 3110.151
Primary

Change From Baseline to End of Treatment in Clinical Creatinine Serum Chemistry Concentration

Clinical safety laboratory assessment in creatinine serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical creatinine serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Creatinine Serum Chemistry Concentration-4.14 umol/LStandard Deviation 9.737
Primary

Change From Baseline to End of Treatment in Clinical Estimated Glomerular Filtration Rate (GFR) Serum Chemistry Concentration

Clinical safety laboratory assessment in GFR serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical GFR serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Estimated Glomerular Filtration Rate (GFR) Serum Chemistry Concentration-5.82 mL/sec/1.73m^2Standard Deviation 9.691
Primary

Change From Baseline to End of Treatment in Clinical Globulin Serum Chemistry Concentration

Clinical safety laboratory assessment in globulin serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical globulin serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Globulin Serum Chemistry Concentration0.15 g/dLStandard Deviation 0.071
Primary

Change From Baseline to End of Treatment in Clinical Glucose Serum Chemistry Concentration

Clinical safety laboratory assessment in glucose serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical glucose serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Glucose Serum Chemistry Concentration-0.14 nmol/LStandard Deviation 0.526
Primary

Change From Baseline to End of Treatment in Clinical Lactate Dehydrogenase Serum Chemistry Concentration

Clinical safety laboratory assessment in lactate dehydrogenase serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical lactate dehydrogenase serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Lactate Dehydrogenase Serum Chemistry Concentration53.86 U/LStandard Deviation 98.104
Primary

Change From Baseline to End of Treatment in Clinical Magnesium Serum Chemistry Concentration

Clinical safety laboratory assessment in magnesium serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical magnesium serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Magnesium Serum Chemistry Concentration-0.02 nmol/LStandard Deviation 0.077
Primary

Change From Baseline to End of Treatment in Clinical Phosphate Serum Chemistry Concentration

Clinical safety laboratory assessment in phosphate serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical phosphate serum chemistry was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Phosphate Serum Chemistry Concentration0.09 nmol/LStandard Deviation 0.163
Primary

Change From Baseline to End of Treatment in Clinical Potassium Serum Chemistry Concentration

Clinical safety laboratory assessment in potassium serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical potassium serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Potassium Serum Chemistry Concentration0.34 nmol/LStandard Deviation 0.532
Primary

Change From Baseline to End of Treatment in Clinical Protein Serum Chemistry Concentration

Clinical safety laboratory assessment in protein serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical protein serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Protein Serum Chemistry Concentration0.29 g/LStandard Deviation 3.352
Primary

Change From Baseline to End of Treatment in Clinical Sodium Serum Chemistry Concentration

Clinical safety laboratory assessment in sodium serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical sodium serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Sodium Serum Chemistry Concentration-0.57 nmol/LStandard Deviation 1.902
Primary

Change From Baseline to End of Treatment in Clinical Triglycerides Serum Chemistry Concentration

Clinical safety laboratory assessment in triglycerides serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical triglycerides serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Triglycerides Serum Chemistry Concentration0.17 nmol/LStandard Deviation 0.659
Primary

Change From Baseline to End of Treatment in Clinical Urate Serum Chemistry Concentration

Clinical safety laboratory assessment in urate serum chemistry.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical urate serum chemistry was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Clinical Urate Serum Chemistry Concentration8.71 umol/LStandard Deviation 48.555
Primary

Change From Baseline to End of Treatment in Diastolic Blood Pressure

The change from baseline to end of treatment in participants' diastolic blood pressure (dbp) was assessed. The changes in recumbent dbp, standing dbp, and the change from recumbent to standing dbp are reported. Change from recumbent to standing dbp was measured by the difference in recumbent dbp change and standing dbp change.

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: Diastolic blood pressure was assessed using the safety population.

ArmMeasureGroupValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Diastolic Blood PressureRecumbent-8.14 mmHgStandard Deviation 14.916
CX-8998Change From Baseline to End of Treatment in Diastolic Blood PressureStanding1.86 mmHgStandard Deviation 7.267
CX-8998Change From Baseline to End of Treatment in Diastolic Blood PressureChange from Recumbent to Standing10.00 mmHgStandard Deviation 8.737
Primary

Change From Baseline to End of Treatment in Eosinophils Hematology Assessment

Clinical safety laboratory eosinophils hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical eosinophils were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Eosinophils Hematology Assessment0.02 cellsx10E9/LStandard Deviation 0.042
Primary

Change From Baseline to End of Treatment in Eosinophils/Leukocytes Hematology Assessment

Clinical safety laboratory eosinophils/leukocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical eosinophils/leukocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Eosinophils/Leukocytes Hematology Assessment0.00 ratioStandard Deviation 0.007
Primary

Change From Baseline to End of Treatment in Erythrocytes Distribution Width Hematology Assessment

Clinical safety laboratory erythrocytes distribution width hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical erythrocytes distribution width was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Erythrocytes Distribution Width Hematology Assessment0.00 ratioStandard Deviation 0
Primary

Change From Baseline to End of Treatment in Erythrocytes Hematology Assessment

Clinical safety laboratory erythrocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical erythrocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Erythrocytes Hematology Assessment-0.02 cellsx10E12/LStandard Deviation 0.194
Primary

Change From Baseline to End of Treatment in Heart Rate

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: Heart rate was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Heart Rate3.67 beats/minStandard Deviation 13.866
Primary

Change From Baseline to End of Treatment in Hemaglobin Hematology Assessment

Clinical safety laboratory hemaglobin hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical hemoglobin was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Hemaglobin Hematology Assessment1.17 g/LStandard Deviation 6.555
Primary

Change From Baseline to End of Treatment in Hematocrit Hematology Assessment

Clinical safety laboratory hematocrit hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical hematocrit was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Hematocrit Hematology Assessment0.00 ratioStandard Deviation 0.015
Primary

Change From Baseline to End of Treatment in Leukocytes Hematology Assessment

Clinical safety laboratory leukocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Leukocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Leukocytes Hematology Assessment0.25 cellsx10E9/LStandard Deviation 2.228
Primary

Change From Baseline to End of Treatment in Lymphocytes Hematology Assessment

Clinical safety laboratory lymphocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Lymphocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Lymphocytes Hematology Assessment-0.17 cellsx10E9/LStandard Deviation 0.452
Primary

Change From Baseline to End of Treatment in Lymphocytes/Leukocytes Hematology Assessment

Clinical safety laboratory lymphocytes/leukocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Lymphocytes/leukocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Lymphocytes/Leukocytes Hematology Assessment-0.02 ratioStandard Deviation 0.045
Primary

Change From Baseline to End of Treatment in Mean Corpuscular Hemoglobin (HGB) Concentration Hematology Assessment

Clinical safety laboratory mean corpuscular HGB concentration hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical mean corpuscular HGB concentration was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Mean Corpuscular Hemoglobin (HGB) Concentration Hematology Assessment0.00 nmol/LStandard Deviation 1.23
Primary

Change From Baseline to End of Treatment in Mean Corpuscular Hemoglobin (HGB) Hematology Assessment

Clinical safety laboratory mean corpuscular HGB hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical mean corpuscular HGB was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Mean Corpuscular Hemoglobin (HGB) Hematology Assessment-0.04 fmolStandard Deviation 0.049
Primary

Change From Baseline to End of Treatment in Mean Corpuscular Volume Hematology Assessment

Clinical safety laboratory mean corpuscular volume hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Clinical mean corpuscular volume was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Mean Corpuscular Volume Hematology Assessment-1.00 fLStandard Deviation 2.828
Primary

Change From Baseline to End of Treatment in Mean Platelet Volume Hematology Assessment

Clinical safety laboratory mean platelet volume hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Mean platelet volume was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Mean Platelet Volume Hematology Assessment0.65 fLStandard Deviation 1.202
Primary

Change From Baseline to End of Treatment in Monocytes Hematology Assessment

Clinical safety laboratory monocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Monocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Monocytes Hematology Assessment0.01 cellsx10E9/LStandard Deviation 0.067
Primary

Change From Baseline to End of Treatment in Monocytes/Leukocytes Hematology Assessment

Clinical safety laboratory monocytes/leukocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Monocytes/leukocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Monocytes/Leukocytes Hematology Assessment0.00 ratioStandard Deviation 0.021
Primary

Change From Baseline to End of Treatment in Neutrophils Hematology Assessment

Clinical safety laboratory neutrophils hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Neutrophils were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Neutrophils Hematology Assessment0.41 cellsx10E9/LStandard Deviation 1.911
Primary

Change From Baseline to End of Treatment in Neutrophils/Leukocytes Hematology Assessment

Clinical safety laboratory neutrophils/leukocytes hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Neutrophils/leukocytes were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Neutrophils/Leukocytes Hematology Assessment0.02 ratioStandard Deviation 0.063
Primary

Change From Baseline to End of Treatment in Platelets Hematology Assessment

Clinical safety laboratory platelets hematology assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Platelets were assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Platelets Hematology Assessment10.67 cellsx10E9/LStandard Deviation 38.645
Primary

Change From Baseline to End of Treatment in PR Interval

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: PR interval was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in PR Interval-0.17 msecStandard Deviation 7.026
Primary

Change From Baseline to End of Treatment in Pulse

The change from baseline to end of treatment in participants' pulses was assessed. The changes in recumbent pulse, standing pulse, and the change from recumbent to standing pulse are reported. Change from recumbent to standing pulse was measured by the difference in recumbent pulse change and standing pulse change.

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: Pulse was assessed using the safety population.

ArmMeasureGroupValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in PulseRecumbent-9.71 bpmStandard Deviation 8.036
CX-8998Change From Baseline to End of Treatment in PulseStanding-5.57 bpmStandard Deviation 6.973
CX-8998Change From Baseline to End of Treatment in PulseChange from Recumbent to Standing4.14 bpmStandard Deviation 5.956
Primary

Change From Baseline to End of Treatment in QRS Interval

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: QRS interval was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in QRS Interval-1.50 msecStandard Deviation 2.811
Primary

Change From Baseline to End of Treatment in QT Interval

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: QT was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in QT Interval-2.67 msecStandard Deviation 12.801
Primary

Change From Baseline to End of Treatment in QT Interval Corrected for Heart Rate Using Fridericia's Formula (QTcF)

Fridericia's Correction Formula (QTCF) is a formula which takes into account the physiologic shortening of the QT interval which occurs as the heart rate increases, permitting comparison of the QT interval across a range of rates.

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: QTcF was assessed using the safety population. The number of participants varied due to the lack of completion of assessments.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in QT Interval Corrected for Heart Rate Using Fridericia's Formula (QTcF)3.50 msecStandard Deviation 10.213
Primary

Change From Baseline to End of Treatment in Respiration Rate

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: Respiration rate was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Respiration Rate0.29 breaths/minStandard Deviation 1.38
Primary

Change From Baseline to End of Treatment in Systolic Blood Pressure

The change from baseline to end of treatment in participants' systolic blood pressure (sbp) was assessed. The changes in recumbent sbp, standing sbp, and the change from recumbent to standing sbp are reported. Change from recumbent to standing sbp was measured by the difference in recumbent sbp change and standing sbp change.

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: Systolic blood pressure was assessed using the safety population.

ArmMeasureGroupValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Systolic Blood PressureRecumbent-3.29 mmHgStandard Deviation 14.338
CX-8998Change From Baseline to End of Treatment in Systolic Blood PressureStanding-2.86 mmHgStandard Deviation 12.103
CX-8998Change From Baseline to End of Treatment in Systolic Blood PressureChange from Recumbent to Standing0.43 mmHgStandard Deviation 4.962
Primary

Change From Baseline to End of Treatment in Temperature

Time frame: Baseline (Day 1) to end of treatment 1-2 hours post-dose, up to 4 weeks post-dose.

Population: Temperature was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Temperature-0.01 celsiusStandard Deviation 0.43
Primary

Change From Baseline to End of Treatment in Urobilinogen Urinalysis Assessment

Clinical safety laboratory urobilinogen urinalysis assessment.

Time frame: Baseline (Day 1) to end of treatment, or up to 4 weeks post-dose.

Population: Urobilinogen was assessed using the safety population.

ArmMeasureValue (MEAN)Dispersion
CX-8998Change From Baseline to End of Treatment in Urobilinogen Urinalysis Assessment0.00 nmol/LStandard Deviation 0
Primary

Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse Events

Treatment-emergent adverse events are all adverse events occurring during the treatment period or a pretreatment event that worsens in intensity during the treatment period as assessed by CTCAE v4.0.

Time frame: Baseline (Day 1) up to Day 26 post-dose, or up to 1 year 3 weeks.

Population: Participants who did not complete the study was assessed using the safety population. The number of participants analyzed varied as participation declined over time.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CX-8998Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse Events0 Participants
CX-8998 Days 3 - 8 (8 mg/d)Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse Events0 Participants
CX-8998 Days 9 - 14 (12 mg/d)Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse Events0 Participants
CX-8998 Days 15 - 20 (16 mg/d)Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse Events0 Participants
CX-8998 Days 21 - 27 (20 mg/d)Number (%) of Participants Who Did Not Complete The Study Due to Treatment-Emergent Adverse Events0 Participants
Primary

Number (%) of Participants With Adverse Events of Special Interest

An adverse event of special interest is a serious adverse event as defined in Outcome 6. This includes, however is not limited to, increased seizure frequency, new seizure types, worsening of EEG parameters, systemic adverse events based on safety profile as assessed by CTCAE v4.0.

Time frame: Baseline (Day 1) up to Day 26 post-dose, or up to 1 year 3 weeks.

Population: Participants with adverse events of special interest were assessed using the safety population. The number of participants analyzed varied as participation declined over time.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CX-8998Number (%) of Participants With Adverse Events of Special InterestAny Event1 Participants
CX-8998Number (%) of Participants With Adverse Events of Special InterestSeizure1 Participants
CX-8998 Days 3 - 8 (8 mg/d)Number (%) of Participants With Adverse Events of Special InterestAny Event0 Participants
CX-8998 Days 3 - 8 (8 mg/d)Number (%) of Participants With Adverse Events of Special InterestSeizure0 Participants
CX-8998 Days 9 - 14 (12 mg/d)Number (%) of Participants With Adverse Events of Special InterestAny Event0 Participants
CX-8998 Days 9 - 14 (12 mg/d)Number (%) of Participants With Adverse Events of Special InterestSeizure0 Participants
CX-8998 Days 15 - 20 (16 mg/d)Number (%) of Participants With Adverse Events of Special InterestSeizure0 Participants
CX-8998 Days 15 - 20 (16 mg/d)Number (%) of Participants With Adverse Events of Special InterestAny Event0 Participants
CX-8998 Days 21 - 27 (20 mg/d)Number (%) of Participants With Adverse Events of Special InterestAny Event1 Participants
CX-8998 Days 21 - 27 (20 mg/d)Number (%) of Participants With Adverse Events of Special InterestSeizure1 Participants

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