Clinical Trial on Agitation in Alzheimer's Dementia

Last updated: January 22, 2026
Sponsor: IGC Pharma, LLC
Overall Status: Active - Recruiting

Phase

2

Condition

Anxiety Disorders

Dementia

Williams Syndrome

Treatment

Agitation management in Alzheimer's disease (IGC-AD1-Placebo)

Agitation management in Alzheimer's disease (IGC-AD1-Active)

IGC-AD1-Active

Clinical Study ID

NCT05543681
IGC-AD1-P2 BIDAG
  • Ages > 60
  • All Genders

Study Summary

The purpose of this study is to assess the efficacy of the oral medication IGC-AD1, a THC-based (Delta-9-Tetrahydrocannabinol) formulation administered twice a day on Agitation in patients with mild to severe dementia from Alzheimer's.

Eligibility Criteria

Inclusion

To be eligible to participate in this study, the participant must meet all the following criteria:

Inclusion Criteria

  1. Participant and/or Caregiver must provide a signed and dated ICF prior to any study procedures.

  2. Must have a Caregiver who is able and willing to comply with all required study procedures.

  3. The Caregiver must be known to the Participant and must be able to use electronic devices such as a cell phone, video conference over a laptop or cell phone, weighing scale, and be able to learn to take blood pressure, among others.

  4. Based on local practice, Participants that cannot consent may have Caregiver's consent provided the Caregiver has among others a) Power of Attorney, b) is a spouse, or c) a sibling or d) a child or e) a close relation. The practice of accepting consent must be consistent with established practice at the site and jurisdiction.

  5. Participants must consent to CYP450 and apolipoprotein E (ApoE) genotyping, and pharmacokinetics.

  6. Diagnosis of AD by NIA-AA criteria

  7. Clinically significant Agitation assessed by:

  8. NPI (Agitation) ≥ 4

  9. The presence of clinically significant, persistent Agitation based on the IPA definition (Appendix C) rather than those with recent onset and occasional symptoms, and

  10. Agitation not attributable to another psychiatric disorder, suboptimal care conditions, other underlining medical condition, or the physiological effects of a substance.

  11. Negative drug screen, except for benzodiazepines if Participant has been using them in stable doses for at least 3 months before screening.

  12. All medications used for behavioral symptoms should be consistent for at least 6 weeks before screening, with allowance for dose changes up to 25%.

  13. Women must be of no childbearing potential (postmenopausal, defined as cessation of menses for at least 12 months, without an alternative medical cause for amenorrhea) or surgically sterile (hysterectomy, bilateral oophorectomy, or bilateral tubal ligation)).

An individual who meets any of the following criteria will be excluded from participation in this study:

Exclusion Criteria

  1. Prior adverse reaction to cannabinoids or to any component of Study Drug (IGC-AD1 and placebo).

  2. Serious or unstable medical illness, including cardiovascular, hepatic, renal, respiratory, endocrine, neurologic, or hematologic disease, which might confound assessment of safety outcomes.

  3. History of seizures, schizophrenia, or bipolar disorder.

  4. Has participated in an investigational drug or device study within 30 days prior to study start.

  5. Urine drug screen positive for drug use, except for benzodiazepines if Participant was using them previously and their dose had remained stable for at least six weeks before screening.

  6. History of Alcohol and Drug use disorder, within one year prior to enrollment.

  7. Hypertension: Participants with a history of uncontrolled hypertension as determined by the PI and Participants with a hypertensive crisis in the six months prior to enrollment.

  8. Falls: Participants with a history of recurrent falls defined as more than two falls in the six-month period prior to enrollment and a history of falls resulting in injuries or associated with a new acute illness, loss of consciousness, fever, or abnormal blood pressure (Fuller et al., 2000).

Study Design

Total Participants: 164
Treatment Group(s): 4
Primary Treatment: Agitation management in Alzheimer's disease (IGC-AD1-Placebo)
Phase: 2
Study Start date:
October 11, 2022
Estimated Completion Date:
March 30, 2026

Study Description

CALMA is a multi-center, double-blind, randomized, placebo-controlled clinical trial. The study targets participants aged 60 and older with mild to severe Alzheimer's dementia who have exhibited clinically significant agitation for at least two weeks prior to enrollment. Agitation caused by other conditions or transient symptoms must be ruled out. Eligibility is determined by a baseline Neuropsychiatric Inventory (NPI-12), Agitation subscale score of ≥4 and the International Psychogeriatric Association (IPA) criteria for agitation.

The investigational medication is an oral solution containing two active ingredients: delta-9 tetrahydrocannabinol (THC) and melatonin. The treatment is administered for 42 days, followed by a two-day taper period at the end of the study.

Safety oversight includes daily calls on days 2, 3, and 4, transitioning to calls every third day thereafter. These calls will review study partners logbook entries, changes in concomitant medications, and adverse events.

The primary objective of the study is to evaluate the efficacy of IGC-AD1 on agitation, measured by changes in the Cohen-Mansfield Agitation Inventory (CMAI) scores from baseline to the End of treatment (EOT). The secondary objective is to assess efficacy by examining CMAI score changes from baseline to week two. Additionally, exploratory objectives are outlined in separate documentation.

Blood samples will be collected during the trial for sparse pharmacokinetic (PK) analysis, blood-based CNS biomarker, and genotyping.

Connect with a study center

  • Island Health Authorities

    Victoria, British Columbia V8R 1J8
    Canada

    Site Not Available

  • Island Health Authorities

    Victoria 6174041, British Columbia 5909050 V8R 1J8
    Canada

    Active - Recruiting

  • Hamilton Health Sciences , Mcmaster University

    Hamilton, Ontario L8M 1W9
    Canada

    Site Not Available

  • Baycrest Academy, University of Toronto

    Toronto, Ontario ON M6A 2E1
    Canada

    Site Not Available

  • Site 1000

    Toronto, Ontario ON M6A 2E1
    Canada

    Active - Recruiting

  • Hamilton Health Sciences , Mcmaster University

    Hamilton 5969782, Ontario 6093943 L8M 1W9
    Canada

    Active - Recruiting

  • Baycrest Academy, University of Toronto

    Toronto 6167865, Ontario 6093943 ON M6A 2E1
    Canada

    Active - Recruiting

  • Douglas Hospital Research Center, McGill university

    Montréal, Quebec H4H 1R3
    Canada

    Site Not Available

  • Sante Cannabis

    Montréal, Quebec H3Z 2Y5
    Canada

    Active - Recruiting

  • Site 1300

    Montréal, Quebec H4H 1R3
    Canada

    Active - Recruiting

  • Site 300

    Montréal, Quebec H3Z 2Y5
    Canada

    Site Not Available

  • Douglas Hospital Research Center, McGill university

    Montreal 6077243, Quebec 6115047 H4H 1R3
    Canada

    Active - Recruiting

  • Grupo de Neurociencias de Antioquia, Universidad de Antioquia

    Medellín, Antioquia
    Colombia

    Site Not Available

  • Grupo de Neurociencias de Antioquia, Universidad de Antioquia

    Medellín 3674962, Antioquia 3689815
    Colombia

    Site Not Available

  • Instituto Sanacoop

    Bayamón 4562831, Bayamón 4562837 00961
    Puerto Rico

    Completed

  • Instituto Sancoop

    Bayamon, 00961
    Puerto Rico

    Site Not Available

  • Instituto Sanacoop

    Bayamón, 00961
    Puerto Rico

    Completed

  • SCB Research Center

    Bayamón, 00961
    Puerto Rico

    Site Not Available

  • Santa Cruz Behavioral

    Bayamón, 00961
    Puerto Rico

    Active - Recruiting

  • Site 100

    Bayamón, 00961
    Puerto Rico

    Active - Recruiting

  • Site 200

    Bayamón, 00961
    Puerto Rico

    Active - Recruiting

  • SCB Research Center

    Bayamón 4562831, 00961
    Puerto Rico

    Active - Recruiting

  • Site 500

    Rio Piedras, 00935
    Puerto Rico

    Active - Recruiting

  • University of Puerto Rico

    Rio Piedras, 00935
    Puerto Rico

    Site Not Available

  • University of Puerto Rico- Medical Science campus

    Rio Piedras, 00935
    Puerto Rico

    Active - Recruiting

  • University of Puerto Rico

    Rio Piedras 4829037, 00935
    Puerto Rico

    Active - Recruiting

  • ClinCloud, LLC

    Maitland, Florida 32751
    United States

    Site Not Available

  • ClinCloud, LLC

    Melbourne, Florida 32940
    United States

    Site Not Available

  • Site 700

    Melbourne, Florida 32940
    United States

    Active - Recruiting

  • Global Medical Institutes Florida, LLC

    Miami, Florida 33125
    United States

    Active - Recruiting

  • Miami Jewish Health

    Miami, Florida 33137
    United States

    Site Not Available

  • Site 1200

    Miami, Florida 33125
    United States

    Active - Recruiting

  • Neurostudies Inc.

    Port Charlotte, Florida 33952
    United States

    Site Not Available

  • Site 1100

    Port Charlotte, Florida 33952
    United States

    Active - Recruiting

  • BayCare Health System Inc.

    Saint Petersburg, Florida 33705
    United States

    Site Not Available

  • University of South Florida Department of Psychiatry and Behavioral Neurosciences

    Tampa, Florida 33613
    United States

    Site Not Available

  • ClinCloud, LLC

    Maitland 4163220, Florida 4155751 32751
    United States

    Site Not Available

  • ClinCloud, LLC

    Melbourne 4163971, Florida 4155751 32940
    United States

    Active - Recruiting

  • Global Medical Institutes Florida, LLC

    Miami 4164138, Florida 4155751 33125
    United States

    Active - Recruiting

  • Miami Jewish Health

    Miami 4164138, Florida 4155751 33137
    United States

    Active - Recruiting

  • Visionary Investigators Network

    Miami 4164138, Florida 4155751 33133
    United States

    Active - Recruiting

  • Neurostudies Inc.

    Port Charlotte 4169130, Florida 4155751 33952
    United States

    Active - Recruiting

  • BayCare Health System Inc.

    St. Petersburg 4171563, Florida 4155751 33705
    United States

    Active - Recruiting

  • University of South Florida Department of Psychiatry and Behavioral Neurosciences

    Tampa 4174757, Florida 4155751 33613
    United States

    Active - Recruiting

  • Tandem Intermediate, LLC

    Metairie 4333177, Louisiana 4331987 70006
    United States

    Active - Recruiting

  • MedStar Franklin Square Medical Center Neurology

    Baltimore, Maryland 21237
    United States

    Site Not Available

  • MedStar Health Research Institute

    Baltimore, Maryland 21237
    United States

    Active - Recruiting

  • Site 400

    Baltimore, Maryland 21237
    United States

    Active - Recruiting

  • Medstar Georgetown University Hospital Neurology

    Clinton, Maryland 20735
    United States

    Site Not Available

  • Medstar Montgomery Medical Center

    Olney, Maryland 20832
    United States

    Site Not Available

  • MedStar Franklin Square Medical Center Neurology

    Baltimore 4347778, Maryland 4361885 21237
    United States

    Active - Recruiting

  • Medstar Georgetown University Hospital Neurology

    Clinton 4351871, Maryland 4361885 20735
    United States

    Active - Recruiting

  • Medstar Montgomery Medical Center

    Olney 4364537, Maryland 4361885 20832
    United States

    Active - Recruiting

  • Site 800

    Newton, Massachusetts 02459
    United States

    Site Not Available

  • Tekton Research LLC

    St Louis 4407066, Missouri 4398678 63128
    United States

    Active - Recruiting

  • Dent Neurosciences Research Center

    Amherst, New York 02459
    United States

    Site Not Available

  • Site 900

    Amherst, New York 02459
    United States

    Active - Recruiting

  • Ichor Research

    Syracuse, New York 13210
    United States

    Site Not Available

  • Dent Neurosciences Research Center

    Amherst 5107129, New York 5128638 02459
    United States

    Active - Recruiting

  • Integrative Clinical Trials, LLC

    Brooklyn 5110302, New York 5128638 11229
    United States

    Site Not Available

  • Ichor Research

    Syracuse 5140405, New York 5128638 13210
    United States

    Active - Recruiting

  • Lynn Health Science Institute (LHSI)

    Oklahoma City, Oklahoma 73112
    United States

    Site Not Available

  • Site 1400

    Oklahoma City, Oklahoma 73112
    United States

    Active - Recruiting

  • Tekton Research LLC

    Yukon, Oklahoma 73099
    United States

    Site Not Available

  • Lynn Health Science Institute (LHSI)

    Oklahoma City 4544349, Oklahoma 4544379 73112
    United States

    Active - Recruiting

  • Tekton Research LLC

    Yukon 4556165, Oklahoma 4544379 73099
    United States

    Site Not Available

  • Butler Hospital, Brown University

    Providence, Rhode Island 02906
    United States

    Site Not Available

  • Butler Hospital, Brown University

    Providence 5224151, Rhode Island 5224323 02906
    United States

    Active - Recruiting

  • Senior Adults Specialty Research

    Austin, Texas 78757
    United States

    Site Not Available

  • Senior Adults Specialty Research

    Austin 4671654, Texas 4736286 78757
    United States

    Active - Recruiting

  • Dominion Medical Associates, Inc.

    Richmond 4781708, Virginia 6254928 23219
    United States

    Active - Recruiting

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