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Completed

NCT Number: NCT05749055

ENCALM: A Study of ENX-102 as a Monotherapy Treatment in Patients With Generalized Anxiety Disorder

The ENCALM trial is designed to evaluate the efficacy and safety of ENX-102 in patients diagnosed with generalized anxiety disorder (GAD)

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Key information

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

IMA Clinical Research Phoenix, Phoenix, Arizona, United States

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Who can participate

Healthy volunteers accepted: No

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

Key Inclusion Criteria:

  • Male or female at birth, inclusive of any gender identity, aged 18 to 65 years, inclusive, at Screening
  • Diagnosed with GAD according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), confirmed by a Mini-International Neuropsychiatric Interview (MINI) version 7.0.2
  • Experiencing clinically significant generalized anxiety in need of treatment as measured by Hamilton Anxiety Rating Scale (HAM-A) Screening and Day 1 scores ≥22 and at least moderately severe score symptoms of anxious mood and tension as measured by HAM-A items 1 and 2, respectively, with score each ≥2 at Screening and Day 1

Key Exclusion Criteria:

  • Clinically predominant psychiatric diagnosis other than GAD as confirmed by the MINI
  • Any past/lifetime/current diagnosis of a neurocognitive disorder, or psychotic disorder, or any current diagnosis of posttraumatic stress disorder, obsessive compulsive disorder or bipolar disorder confirmed by independent adjudication
  • Reports moderately severe to severe symptoms of depression
  • Ingested psychotropic medication within 5 half-lives or 21 days (whichever is longer) prior to Day 1, including THC and CBD, and unwillingness to refrain from their use for the entire duration of the trial
  • Recent suicidal ideation or behavior
  • Current or recent moderate to severe substance use disorder as assessed by the MINI
  • Clinically significant abnormal findings in safety assessments
  • Has significant progressive disorders or unstable medical conditions
  • Unable to comply with the requirements of the study or, in the opinion of the Investigator or Sponsor, is unsuitable for the study

Treatment and study plan

ENX-102

Drug

Selective GABA-A alpha2,3,5 positive allosteric modulator

Placebo

Drug

Placebo

Primary outcomes

  1. To evaluate the efficacy of ENX-102 versus placebo in patients with generalized anxiety disorder (GAD)

    Time frame: 4 weeks

    Mean change from baseline on the Hamilton Anxiety Rating Scale (HAM-A) total score [14 symptoms with each symptom scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56 and higher scores representing worse outcomes]

Sponsors and collaborators

Lead sponsor

Engrail Therapeutics INC

Industry

Registry information

Official study title

The ENCALM Trial: A Randomized, Double-blind, Placebo-controlled Monotherapy Trial to Evaluate the Efficacy and Safety of ENX-102 in Patients With Generalized Anxiety Disorder

Acronym: ENCALM

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Mar 1, 2023
Registry last updated
Sep 25, 2025

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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