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CTx-1301 - Dexmethylphenidate

Phase 3

ADHD | Small molecule | Psychiatry |Cingulate Inc.|Last Updated: Aug 14, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment21
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05631626Phase 3 Efficacy and Safety Study in Adults With ADHD Using CTx-1301.PHASE3 COMPLETED 21Dec 29, 2022Jun 13, 2023Aug 14, 20251 United States
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Study Endpoints
Primary Endpoints
The primary efficacy analysis will analyze the change in PERMP scores from Baseline (pre-dose) at Visit 8 to hour 16 at Visit 8.
Average of the change of the PERMP scores from baseline (measured pre-dose at Visit 8) to hour 16 at Visit 8.

The Permanent Product Measure of Performance (PERMP) is an objective, validated, skill-adjusted math test that measures attention in ADHD. The PERMP total score comprises the sum number of math problems attempted and the number of math problems answered correctly. A higher PERMP score indicates lower impairment.

Secondary Endpoints
Key secondary analysis will analyze the change in PERMP scores from baseline at each time point during the laboratory environment at Visit 8.
Baseline (pre-dose) at Visit 8 then post-dose at hours .5,1,3,6,9,12,13,14,15, and 16.
Key secondary analysis will analyze the change from baseline (pre-dose at Visit 2) of Clinical Global Impression - Severity (CGI-S) scores to CGI-S at Visit 8.
Baseline (pre-dose at Visit 2) to Visit 8 (approximately 6 weeks).
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
25mg CTx-1301 (Dexmethylphenidate tablet)ACTIVE_COMPARATORAll subjects will be titrated to their optimal dose during the dose-optimization phase. The starting dose for all subjects at Day 0 is 25mg. Each subject is expected to be on their optimal dose for 2 sequential weeks prior to the randomization phase. Subjects will be randomized (1:1) to their optimal dose or placebo in the 7-day, double-blind, randomization phase.
37.5mg CTx-1301 (Dexmethylphenidate tablet)ACTIVE_COMPARATORAll subjects will be titrated to their optimal dose during the dose-optimization phase. Possible doses are 25mg, 37.5mg, or 50mg . Each subject is expected to be on their optimal dose for 2 sequential weeks prior to the randomization phase. Subjects will be randomized (1:1) to their optimal dose or placebo in the 7-day, double-blind, randomization phase.
50mg CTx-1301 (Dexmethylphenidate tablet)ACTIVE_COMPARATORAll subjects will be titrated to their optimal dose during the dose-optimization phase. Possible doses are 25mg, 37.5mg, or 50mg . Each subject is expected to be on their optimal dose for 2 sequential weeks prior to the randomization phase. Subjects will be randomized (1:1) to their optimal dose or placebo in the 7-day, double-blind, randomization phase.
PlaceboPLACEBO_COMPARATORSubjects will be randomized (1:1) to their optimal dose or placebo in the 7-day, double-blind, randomization phase.
Interventions
NameTypeDescription
CTx-1301 - Dexmethylphenidate 25mgDRUG25mg CTx-1301 (Dexmethylphenidate tablet)
CTx-1301 - Dexmethylphenidate 37.5mgDRUG37.5mg CTx-1301 (Dexmethylphenidate tablet)
CTx-1301 - Dexmethylphenidate 50mgDRUG50mg CTx-1301 (Dexmethylphenidate tablet)
PlaceboDRUGPlacebo
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Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Male or female subjects between 18 and 55 years of age (inclusive) at the time of consent. 2. Subject must have a body mass index (BMI) ≥18.5 and ≤40. 3. Subject is unsatisfied with his/her current pharmacological therapy for treatment of ADHD or not currently receiving pharm...

Countries:United States
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Competitive Landscape -ADHD 3 trials
CompanyTickerTrialsLead PhaseDrugs
Supernus Pharmaceuticals, Inc.SUPN1PHASE3SPN-812
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