A Phase 3 interventional study of BXCL501 and Matching Placebo in Agitation and Dementia, sponsored by BioXcel Therapeutics Inc. Terminated at 7 sites in United States. Open to participants aged 65 Years and older. Per ClinicalTrials.gov, last updated 2026-10-01.
Sponsored by BioXcel Therapeutics Inc · Phase 3, Interventional, and Treatment
A study to determine the safety and efficacy of BXCL501 dosing for episodes of agitation associated with dementia when they occur (given as needed [PRN]), for a maximum of 168 doses within a 12-week treatment period.
A randomized, double-blind, placebo-controlled, parallel group, 3-arm study assessing efficacy, safety, and tolerability of two doses of BXCL501 in male and female participants (65 years and older) with acute psychomotor agitation associated with dementia.
Approximately 150 participants will participate in this study. Participants will receive a single film consisting of BXCL501 40 micrograms (µg) dose or BXCL501 60 µg dose or placebo. Participants must reside in a care facility where all study-related procedures and study drug dosing will be performed.
500 studies on the registry are indexed under Psychomotor Agitation; 55 are open to participants now.
This study's enrollment of 13 is below the median of 90 across 413 interventional studies indexed under Psychomotor Agitation.
Browse Psychomotor Agitation studies →BioXcel Therapeutics Inc is the lead sponsor of 15 studies on the registry; 1 is open to participants now.
Of its 12 completed or terminated interventional studies of FDA-regulated products, 8 (67%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Participants will receive 40 μg of BXCL501 sublingually or buccally, with up to 2 doses permitted per calendar day over the 12-week treatment period.
Drug: BXCL501
Participants will receive 60 μg of BXCL501 sublingually or buccally, with up to 2 doses permitted per calendar day over the 12-week treatment period.
Drug: BXCL501
Participants will receive placebo-matched to BXCL501 with up to 2 doses permitted per calendar day over the 12-week treatment period.
Drug: Matching Placebo
Solid-dose film administered sublingually or buccally
Also known as: Dexmedetomidine
Matching solid-dose film administered sublingually or buccally
Change From Pre-dose in PEC Total Score at 30 Minutes Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 30 minutes post-dose
Change From Pre-dose in PEC Total Score at 1 Hour Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 1 hour post-dose
Change From Pre-dose in PEC Total Score at 2 Hours Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 2 hours post-dose
Change From Pre-dose in PEC Total Score at 4 Hours Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 4 hours post-dose
Change From Pre-dose in PEC Total Score at 8 Hours Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 8 hours post-dose
Change From Pre-dose in PEC Total Score at 12 Hours Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 12 hours post-dose
Change From Pre-dose in PEC Total Score at 24 Hours Post-dose for the First Treated Episode of Agitation
The 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). Lower score indicated better outcome.
Time frame: Pre-dose, 24 hours post-dose
Change From Pre-dose in Pittsburgh Agitation Scale (PAS) Total Score at 2 Hours Post-dose for the First Episode of Agitation
The PAS is an instrument based on direct observations of the participant that is developed to monitor the severity of agitation associated with dementia. The PAS is the sum of 4 behavior groups observed (aberrant vocalization, motor agitation, aggressiveness, resisting care, each behavior group ranging from 0 \[not present\] to 4 \[maximally present\]), and thus total score ranges from 0 (absence of agitation) to 16 (extremely severe). Lower score indicated better outcome.
Time frame: Pre-dose, 2 hours post-dose
Change From Pre-dose in Clinical Global Impression of Severity (CGI-S) Score at 2 Hours Post-dose for the First Episode of Agitation
The CGI-S was used to rate the severity of agitation. The score ranges from 0 to 4 that comprises of, 0=not assessed; 1=normal, not at all symptomatic; 2=mildly symptomatic-low level of symptoms-little interference in social functioning; 3=moderately symptomatic-some prominent symptoms-some interference in functioning; 4=severely symptomatic- very marked symptoms make it difficult for participants to engage with others. Higher scores indicate greater severity of agitation.
Time frame: Pre-dose, 2 hours post-dose
Clinical Global Impression of Improvement (CGI-I) Score at 30 Minutes, 1 Hour, and 2 Hours Post-dose for the First Treated Episodes of Agitation
The CGI-I is a global measure of improvement or change from baseline in participant's condition. The CGI-I score ranges from 0 to 7 that comprises of 0 = not assessed (missing), 1= very much improved, 2= much improved, 3= minimally improved, 4= no change, 5= minimally worse, 6= much worse, and 7= very much worse. Higher scores indicate worse condition.
Time frame: 30 minutes, 1 hour, and 2 hours post-dose
Change From Pre-dose in Agitation-Calmness Evaluation Scale (ACES) Scores at 1, 2, 4, and 8 Hours Post-dose for the First Episode of Agitation.
The ACES is a single-item clinician-rated measure of agitation and sedation. Scores range from 1 to 9, where 1= marked agitation, 2= moderate agitation, 3= mild agitation, 4= normal behavior, 5= mild calmness, 6= moderate calmness, 7= marked calmness, 8= deep sleep, and 9= unarousable. Higher scores indicate greater levels of calmness and sedation.
Time frame: Pre-dose, 1, 2 , 4 and 8 hours post-dose
Number of Treated Episodes of Agitation After the First Treated Episode
Time frame: Up to 12 weeks
The study was conducted in United States from 05-Dec-2022 to 11-Sep-2023.
| Milestone | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Started | 5 | 3 | 5 |
| Completed | 4 | 3 | 5 |
| Not completed | 1 | 0 | 0 |
| Withdrew: Withdrawal by subject | 1 | 0 | 0 |
The 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). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in PEC Total Score at 30 Minutes Post-dose for the First Treated Episode of Agitation | -4.2 ± 2.28 | -3.0 ± 0.00 | -6.8 ± 5.81 |
The 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). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in PEC Total Score at 1 Hour Post-dose for the First Treated Episode of Agitation | -6.4 ± 2.07 | -5.7 ± 1.53 | -6.0 ± 5.79 |
The 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). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in PEC Total Score at 2 Hours Post-dose for the First Treated Episode of Agitation | -4.4 ± 5.13 | -3.3 ± 3.51 | -5.2 ± 8.56 |
The 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). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in PEC Total Score at 4 Hours Post-dose for the First Treated Episode of Agitation | -12.0 | -11.0 | -15.3 ± 2.31 |
The 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). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in PEC Total Score at 8 Hours Post-dose for the First Treated Episode of Agitation | -20.0 | — | -12.0 |
The 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). Lower score indicated better outcome.
No measurements were reported for this outcome.
The 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). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in PEC Total Score at 24 Hours Post-dose for the First Treated Episode of Agitation | -12.0 | -5.0 | -8.5 ± 7.78 |
The PAS is an instrument based on direct observations of the participant that is developed to monitor the severity of agitation associated with dementia. The PAS is the sum of 4 behavior groups observed (aberrant vocalization, motor agitation, aggressiveness, resisting care, each behavior group ranging from 0 \[not present\] to 4 \[maximally present\]), and thus total score ranges from 0 (absence of agitation) to 16 (extremely severe). Lower score indicated better outcome.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in Pittsburgh Agitation Scale (PAS) Total Score at 2 Hours Post-dose for the First Episode of Agitation | -3.2 ± 2.28 | -2.3 ± 1.15 | -3.0 ± 4.24 |
The CGI-S was used to rate the severity of agitation. The score ranges from 0 to 4 that comprises of, 0=not assessed; 1=normal, not at all symptomatic; 2=mildly symptomatic-low level of symptoms-little interference in social functioning; 3=moderately symptomatic-some prominent symptoms-some interference in functioning; 4=severely symptomatic- very marked symptoms make it difficult for participants to engage with others. Higher scores indicate greater severity of agitation.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change From Pre-dose in Clinical Global Impression of Severity (CGI-S) Score at 2 Hours Post-dose for the First Episode of Agitation | -0.8 ± 0.84 | -0.3 ± 0.58 | -0.6 ± 1.14 |
The CGI-I is a global measure of improvement or change from baseline in participant's condition. The CGI-I score ranges from 0 to 7 that comprises of 0 = not assessed (missing), 1= very much improved, 2= much improved, 3= minimally improved, 4= no change, 5= minimally worse, 6= much worse, and 7= very much worse. Higher scores indicate worse condition.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| 30 min Post-dose | 2.6 ± 0.55 | 3.3 ± 0.58 | 2.2 ± 1.10 |
| 1 hour Post-dose | 2.0 ± 0.00 | 2.3 ± 0.58 | 2.6 ± 2.07 |
| 2 hours Post-dose | 2.8 ± 0.84 | 3.0 ± 1.00 | 3.0 ± 2.35 |
The ACES is a single-item clinician-rated measure of agitation and sedation. Scores range from 1 to 9, where 1= marked agitation, 2= moderate agitation, 3= mild agitation, 4= normal behavior, 5= mild calmness, 6= moderate calmness, 7= marked calmness, 8= deep sleep, and 9= unarousable. Higher scores indicate greater levels of calmness and sedation.
| score on a scale | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Change at 1 hour Post-dose | 0.6 ± 0.55 | 0.7 ± 0.58 | 1.0 ± 1.22 |
| Change at 2 hours Post-dose | 0.6 ± 0.89 | 0.3 ± 0.58 | 0.8 ± 1.48 |
| Change at 4 hours Post-dose | 2.0 | 2.0 | 2.3 ± 0.58 |
| Change at 8 hours Post-dose | 7.0 | — | 2.0 |
| Number of agitation episodes | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| Number of Treated Episodes of Agitation After the First Treated Episode | 57 | 58 | 59 |
Collected over From first dose of study drug up to 30 days after the last dose (maximum duration:16 weeks). Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| BXCL501: 40 μg | 0/5 (0%) | 0/5 (0%) | 2/5 (40%) |
| BXCL501: 60 μg | 0/3 (0%) | 1/3 (33.3%) | 3/3 (100%) |
| Placebo | 0/5 (0%) | 1/5 (20%) | 4/5 (80%) |
| Event | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| AgitationPsychiatric disorders | 0/5 | 1/3 | 0/5 |
| PneumoniaInfections and infestations | 0/5 | 0/3 | 1/5 |
| Event | BXCL501: 40 μg | BXCL501: 60 μg | Placebo |
|---|---|---|---|
| BradycardiaCardiac disorders | 2/5 | 0/3 | 0/5 |
| Gait disturbanceGeneral disorders | 0/5 | 1/3 | 0/5 |
| OedemaGeneral disorders | 0/5 | 1/3 | 0/5 |
| DysphoniaRespiratory, thoracic and mediastinal disorders | 0/5 | 1/3 | 0/5 |
| FallInjury, poisoning and procedural complications | 0/5 | 0/3 | 1/5 |
| Abdominal painGastrointestinal disorders | 0/5 | 0/3 | 1/5 |
| Skin irritationSkin and subcutaneous tissue disorders | 0/5 | 0/3 | 1/5 |
| DiarrhoeaGastrointestinal disorders | 0/5 | 0/3 | 1/5 |
| Upper respiratory tract infectionInfections and infestations | 0/5 | 0/3 | 1/5 |
| CellulitisInfections and infestations | 0/5 | 0/3 | 1/5 |
Safety Population: All participants who received at least 1 dose of study drug, with participants classified according to the drug actually received.
| Age, Continuous(years) | BXCL501: 40 μg | BXCL501: 60 μg | Placebo | Total |
|---|---|---|---|---|
| Mean | 84.6 ± 4.83 | 89.3 ± 3.51 | 82.4 ± 8.73 | 84.8 ± 6.54 |
| Sex: Female, Male(Participants) | BXCL501: 40 μg | BXCL501: 60 μg | Placebo | Total |
|---|---|---|---|---|
| Female | 4 | 3 | 2 | 9 |
| Male | 1 | 0 | 3 | 4 |
| Ethnicity (NIH/OMB)(Participants) | BXCL501: 40 μg | BXCL501: 60 μg | Placebo | Total |
|---|---|---|---|---|
| Hispanic or Latino | 0 | 1 | 0 | 1 |
| Not Hispanic or Latino | 5 | 2 | 5 | 12 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 |
| Race (NIH/OMB)(Participants) | BXCL501: 40 μg | BXCL501: 60 μg | Placebo | Total |
|---|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 | 0 |
| Asian | 0 | 0 | 0 | 0 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 |
| Black or African American | 0 | 0 | 0 | 0 |
| White | 5 | 3 | 5 | 13 |
| More than one race | 0 | 0 | 0 | 0 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 |
| Positive and Negative Syndrome Scale - Excited Component (PEC) Total Score at Pre-dose(score on a scale) | BXCL501: 40 μg | BXCL501: 60 μg | Placebo | Total |
|---|---|---|---|---|
| Mean | 19.4 ± 3.91 | 23.0 ± 8.19 | 20.6 ± 1.52 | 20.7 ± 4.37 |
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BioXcel Therapeutics Inc