Study of CAD-9303 in Subjects With Schizophrenia (Affinity-1)

A Phase 1 Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Effects on Neurophysiological Biomarkers of CAD-9303 Oral Treatment in Subjects With Schizophrenia and Normal Healthy Volunteers

This study will consist of Single Ascending Dose (SAD) and Multiple Ascending Dose (MAD) cohorts that will be randomized, double-blind, and placebo-controlled to assess the safety, tolerability, and pharmacokinetics of CAD-9303. The first SAD cohort will be in healthy volunteer subjects. The remaining cohorts will be in participants with schizophrenia.

Study Overview

• Status: Completed
• Conditions: Schizophrenia
• Intervention / Treatment: Drug: CAD-9303; Drug: Placebos

Detailed Description

This study will be conducted in two Parts. Part 1 will consist of Single Ascending Dose (SAD) cohorts that will be randomized, double-blind, and placebo-controlled to assess the safety, tolerability, and pharmacokinetics of CAD-9303. Part 2 will consist of Multiple Ascending Dose (MAD) cohorts that will be randomized, double blind, and placebo-controlled to assess the safety, tolerability, and pharmacokinetics of CAD-9303. The effects of CAD-9303 will be explored on event-related potential (ERP), and on sensory and cognitive function. The first SAD cohort will be in healthy volunteer subjects. The remaining cohorts will be in participants with schizophrenia. Participants will meet specified eligibility criteria.

SAD Cohorts will be comprised of 8 subjects; 6 subjects will be administered CAD-9303, and 2 subjects will be administered matching placebo. MAD Cohorts will be comprised of 12 subjects; 9 subjects will be administered CAD-9303, and 3 subjects will be administered matching placebo.

Potential subjects will undergo a screening period (up to 28 days), baseline assessments on Day -3, -2 and -1, and dosing on Day 1 for SAD and Days 1 - 14 for MAD. A follow-up visit will occur 7 days after the last dose. The total duration of individual subject participation may be up to 5 weeks for SAD and 7 weeks for MAD, depending on the duration of the screening period.

The study will assess safety by adverse events, vital signs, laboratory parameters (including chemistry, hematology and urinalysis) and electroencephalogram (EEG); pharmacokinetics of CAD-9303; and exploratory efficacy measures effects on neurophysiological biomarkers, cognitive and negative symptoms.

• Study Type: Interventional
• Enrollment (Actual): 103
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • California
    • Long Beach, California, United States, 90806
      • Collaborative Neuroscience Research
  • New Jersey
    • Marlton, New Jersey, United States, 08053
      • Hassman Research Institute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 50 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Key Inclusion Criteria:

• For SAD Cohorts: able to tolerate washout from antipsychotic medications for the duration of the planned cohort.
• For MAD Cohorts: not taking an antipsychotic medication at screening and throughout participation in the study or taking one antipsychotic medication at least 6 weeks prior to screening and as a concomitant antipsychotic medication throughout participation in the study.
• Diagnosis of schizophrenia by Diagnostic and Statistical Manual of Mental Disorders (DSM-V) criteria with duration of illness > 1 year since diagnosis.
• Clinical history of minimal, stable positive symptoms while under treatment with a stable psychotropic regimen.

Key Exclusion Criteria:

• Abnormal findings on screening safety EEG or lifetime history of seizures or stroke.
• Meets current criteria of any psychiatric diagnosis other than schizophrenia, or lifetime history of any psychiatric diagnosis other than schizophrenia based upon the Mini International Neuropsychiatric Interview (MINI).
• Participants with moderate to severe extrapyramidal symptoms including tardive dyskinesia (Simpson-Angus Scale>6, any Abnormal Involuntary Movement Scale (AIMS) Item 1-7 >2), and akathisia (Barnes Akathisia Rating Scale [BARS] Item 4 ≥1).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: TRIPLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: CAD-9303; Capsules of CAD-9303 will be administered as a single or multiple dose(s). The initial dose will be 3 mg up to 1000 mg total daily dose.	Drug: CAD-9303; Capsules filled with CAD-9303 from 3 mg up to 1000 mg.
PLACEBO_COMPARATOR: Placebo; Matching placebo will be provided in capsules and administered as a single or multiple dose(s).	Drug: Placebos; Capsules

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Assess safety and tolerability of CAD-9303 in participants with schizophrenia and normal healthy volunteers (NHV)	Incidence of Adverse Events	Day 1 through Day 7 Follow-up

Collaborators and Investigators

• Sponsor: Cadent Therapeutics

Study record dates

Study Major Dates

• Study Start (ACTUAL): February 28, 2020
• Primary Completion (ACTUAL): September 22, 2021
• Study Completion (ACTUAL): November 24, 2021

Study Registration Dates

• First Submitted: March 10, 2020
• First Submitted That Met QC Criteria: March 10, 2020
• First Posted (ACTUAL): March 12, 2020

Study Record Updates

• Last Update Posted (ACTUAL): December 15, 2021
• Last Update Submitted That Met QC Criteria: December 14, 2021
• Last Verified: December 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Schizophrenia Spectrum and Other Psychotic Disorders; Schizophrenia
• Other Study ID Numbers: CAD9303-101

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No