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Completed

NCT Number: NCT06041646

Tachyphylaxis, Tolerance, & Withdrawal Post Treatment With Igalmi for Agitation in Schizophrenia or Bipolar Disorder

This is an in-clinic, single arm, open-label study assessing tachyphylaxis, tolerance, and withdrawal following repeated doses of Igalmi in adult males and females with agitation associated with schizophrenia or bipolar disorder.

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Key information

About this study

This is an in-clinic, single arm, open-label study assessing tachyphylaxis, tolerance, and withdrawal following repeated doses of Igalmi in adult males and females (18 to 65 years old, inclusive) with agitation associated with schizophrenia or bipolar disorder. Subjects will be screened for eligibility within 15 days of first dose and no study procedures will occur unless subjects provide written informed consent. Subjects will receive single doses of 180 μg of Igalmi as needed for the treatment of agitation over a period of 7 days followed by a 3- day follow-up period during which time no Igalmi will be administered in an effort to characterize any potential withdrawal. Subjects will sublingually self-administer Igalmi for an agitation episode that reaches a pre-dose PEC total score of 14 or greater, as determined by a trained rater. Safety assessments will be conducted before and after each dose. If the subject's agitation is recurrent or persistent, repeat doses of 90 µg may be administered (no more than 2 repeat doses within a 24-hour period) in the absence of any safety concerns or adverse events.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male and female subjects between the ages of 18 to 65 years, inclusive.
  • Subjects who have met DSM-5 criteria for schizophrenia, schizoaffective, or schizophreniform disorder or bipolar I or II disorder.
  • Subjects who are currently moderate to severely agitated at least 3 days a week.
  • Subjects who read, understand, and provide written informed consent.
  • Subjects who are in good general health prior to study participation as determined by a detailed medical history and in the opinion of the Principal Investigator.
  • Subjects who agree to use a medically acceptable and effective birth control method
  • Subjects must be willing to remain in-clinic for the duration of the study.

Exclusion criteria

  • Subjects with agitation caused by acute intoxication, including positive identification of alcohol by breathalyzer or drugs of abuse during screening.
  • Use of benzodiazepines or other hypnotics or antipsychotic drugs in the 6 hours before study treatment.
  • Subjects with congenital prolonged QT syndrome.
  • Prior treatment with Igalmi

Treatment and study plan

Sublingual film containing Igalmi

Drug

Sublingual film containing 180 µg of Igalmi (dexmedetomidine)

Other names: Dexmedetomidine, BXCL501

Primary outcomes

  1. Change From Baseline in the Positive and Negative Syndrome Scale- Excited Component (PEC) Total Score

    Time frame: Baseline and 2 hours post-dose for all doses administered over 7 days.

    The Positive and Negative Syndrome Scale-Excited Component (PEC) includes 5 items-poor impulse control, tension, hostility, uncooperativeness, and excitement-each of which is rated from 1 (minimum) to 7 (maximum); the sum of these 5 items, the PEC total score, ranges from 5 (absence of agitation) to 35 (extremely severe).

  2. Clinical Global Impression - Improvement (CGI-I)

    Time frame: 2 hours post-dose for all doses administered over 7 days.

    The Clinical Global Impression - Improvement (CGI-I) for agitation in response to treatment measures the current level of agitation relative to the level of agitation prior to administration of study intervention. The CGI-I scores range from 1 to 7 with a score of 1 indicating very much improved, and a score of 7 indicating very much worse.

Secondary outcomes

  1. Number of Participants With Adverse Events During the Follow-up Period

    Time frame: Day 8 through Day 10

    Evaluation of withdrawal phenomenon based on the occurrence of adverse events such as tachycardia, systolic hypertension, nausea, or vomiting and the emergence of any new adverse events on ≥2 consecutive days of the 3-day off-treatment follow-up period.

Sponsors and collaborators

Lead sponsor

BioXcel Therapeutics Inc

Industry

Collaborators

  • Lotus Clinical Research, LLC

Registry information

Official study title

Characterization of Tachyphylaxis, Tolerance, and Withdrawal After Discontinuation of Igalmi in Frequently Agitated Schizophrenic or Bipolar Patients After 7 Days of PRN Treatment

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Sep 18, 2023
Registry last updated
Jan 2, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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