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Single Ascending Dose Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of ITI 333 in Healthy Volunteers

A Randomized, Double-Blind, Placebo-Controlled, Single Ascending Dose Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of ITI 333 in Healthy Volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04934124
Enrollment
48
Registered
2021-06-22
Start date
2020-12-23
Completion date
2021-08-23
Last updated
2023-03-14

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

Conditions

Healthy Volunteers

Brief summary

The study will be conducted as a single-center, randomized, double-blind, placebo-controlled, ascending dose study in up to 8 sequential cohorts of healthy subjects. Each cohort will enroll 8 subjects: 6 subjects will receive ITI-333 and 2 subjects will receive placebo as a single oral dose after a fast of at least 10 hours.

Interventions

ITI-333 oral solution

OTHERPlacebo

Matching placebo

Sponsors

National Institute on Drug Abuse (NIDA)
CollaboratorNIH
Intra-Cellular Therapies, Inc.
Lead SponsorINDUSTRY

Study design

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

Intervention model description

Sequential ascending doses. Parallel (active, placebo) within each cohort

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

Key Inclusion Criteria: * Healthy male and female subjects between 18 and 45 years old (inclusive); * BMI inclusive of 18-32 kg/m2 at screening and a minimum weight of 50 kg; * Willingness to remain in the clinic for the inpatient portion of the study and return for follow-up visit(s) as required by protocol and as deemed necessary by the Investigator; Key

Exclusion criteria

* Clinically significant abnormality within 2 years of Screening that in the Investigator's opinion may place the subject at risk or interfere with study outcome variables; this includes, but is not limited to, history of or current cardiac, hepatic, renal, neurologic, GI, pulmonary, endocrinologic, hematologic, or immunologic disease or history of malignancy; * Clinically significant abnormal findings in vital sign assessments, including blood oxygen saturation (SAO2) \< 96% and \< 12 breaths per min; History of psychiatric condition that in the Investigator's opinion may be detrimental to participation in the study

Design outcomes

Primary

MeasureTime frame
Change from baseline in alanine aminotransferaseUp to Day 12
Percentage of subjects with treatment-emergent adverse eventsup to 30 days after last dose
Change from baseline in systolic and diastolic blood pressureUp to Day 12
Change from baseline in SAO2Up to Day 12
Change from baseline in ECG QT intervalUp to Day 12
Change from baseline in hemoglobinUp to Day 12
Change from baseline in white blood cell countUp to Day 12
Change from baseline in aspartate aminotransferaseUp to Day 12

Secondary

MeasureTime frameDescription
Pharmacokinetics: AUC0-infpredose and multiple timepoints up to 96 hours postdoseArea under the plasma concentration (ITI-333 and metabolites) time curve from time zero to infinity
Pharmacokinetics: Cmaxpredose and multiple timepoints up to 96 hours postdoseMaximum plasma concentration of ITI-333 and metabolites
Pharmacokinetics: Tmaxpredose and multiple timepoints up to 96 hours postdoseTime of maximum concentration of ITI-333 and metabolites in plasma
Pharmacokinetics: T1/2predose and multiple timepoints up to 96 hours postdoseTerminal elimination half-life of ITI-333 and metabolites
Pharmacokinetics: CL/Fpredose and multiple timepoints up to 96 hours postdoseApparent oral clearance of ITI-333
Pharmacokinetics: Vz/Fpredose and multiple timepoints up to 96 hours postdoseApparent volume of distribution of ITI-333
Pharmacokinetics: AUC0-tpredose and multiple timepoints up to 96 hours postdoseArea under the plasma concentration time curve from time zero to the last measurable of concentration of ITI-333 and metabolites

Countries

United States

Outcome results

None listed

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