A 10-week Efficacy Study of NOE-105 in Childhood Onset Fluency Disorder (Orpheus)

A Double-blind, Placebo-controlled, Phase IIb, Multi-center, Ten-week Prospective Study to Evaluate the Efficacy and Safety of NOE-105 in Adult Male Patients With Childhood Onset Fluency Disorder (Orpheus)

This study is designed to evaluate the effectiveness of NOE-105 on speech fluency without the known antipsychotic-induced side effects of commonly used treatments for childhood onset fluency disorder (COFD).

Study Overview

• Status: Completed
• Conditions: Childhood-Onset Fluency Disorder
• Intervention / Treatment: Drug: NOE-105; Drug: Placebo

Detailed Description

NOE-105 is an investigational selective PDE10A inhibitor with a potential therapeutic effect for the treatment of COFD. In this study adult male patients may be randomized to a double-blind, placebo-controlled, parallel group treatment with NOE-105 or placebo once daily. The study is designed to find the maximum tolerated dose of NOE-105 and thereafter, to maintain the participants at this dose until they have completed a total of 10 weeks treatment period. Following up to 10 weeks of treatment, participants will visit the study site for a follow-up visit within 28 (± 7) days of the date of the last dose of study treatment.

• Study Type: Interventional
• Enrollment (Actual): 75
• Phase: Phase 2

Contacts and Locations

Study Locations

• Australia
  • New South Wales
    • Brookvale, New South Wales, Australia, 2100
      • Noema Investigator site
    • Miranda, New South Wales, Australia, 2228
      • Noema Investigator site
    • Sydney, New South Wales, Australia, 2109
      • Noema Investigator site
• United States
  • California
    • Bellflower, California, United States, 90706
      • Noema Investigator site
  • Florida
    • Jacksonville, Florida, United States, 32256
      • Noema Investigator site
    • Orlando, Florida, United States, 32801
      • Noema Investigator site
  • Kansas
    • Overland Park, Kansas, United States, 66210
      • Noema Investigator site
  • New Jersey
    • Berlin, New Jersey, United States, 08009
      • Noema Investigator site
  • Tennessee
    • Memphis, Tennessee, United States, 38119
      • Noema Investigator site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Patients must be 18 to 55 years of age inclusive, at the time of signing the informed consent.
2. Patients who satisfy DSM-5 criteria for childhood onset fluency disorder and are suitable for pharmacotherapy.
3. Have a history of stuttering for more than or equal to ≥ 2 years with onset consistent to developmental in nature before age 8 years.
4. Patient reported global stuttering experience as "moderate" at screening and baseline.
5. Patients must discontinue all medications used to treat stuttering for at least 14 days prior to receiving study treatment. With the exception of antipsychotic therapies (see exclusion criterion #11), other psychotropic drugs will be allowed provided they have been stable for at least 14 days prior to receiving study treatment and are expected to remain stable for the duration of the study.
6. BMI within the range 19 to 35 kg/m2 (inclusive).

7. Male Contraceptive use should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.

   Male patients must use a condom during the treatment period and until the end of relevant systemic exposure in the male participant, plus a further 90-day period. In addition, for a non-pregnant WOCBP partner.

8. Capable of giving signed informed consent
9. Able to read and write in English

Exclusion Criteria:

1. Stuttering is related to a known neurological cause eg, stroke, etc.
2. Low IQ in the opinion of the investigator.
3. Patients with uncontrolled seizure disorders.
4. A history of severe traumatic brain injury or stroke.
5. Patients who are, in the investigator's opinion, at imminent risk of suicide.
6. Known to have tested positive for human immunodeficiency virus.
7. Known DSM-5 diagnosis of substance abuse or dependence.
8. Unstable medical illness or clinically significant abnormalities on screening tests/exams.
9. Any unstable medical conditions or are currently ill (eg, congenital heart disease, arrhythmia or cancer), which, in the investigator's judgment, will put them at a risk of major adverse event during this trial, are expected to progress during the study, or will interfere with safety and efficacy assessments.
10. Initiation of new behavioral therapies for stuttering within 10 weeks prior to baseline.
11. Use of antipsychotic drug therapy within 14 days prior to receiving treatment until the EoT visit.
12. Participation in another clinical study with an IP administered in the last 30 days.
13. Participants with a known hypersensitivity to NOE-105 or any of the excipients of the product.
14. Patient must not intend to use cannabinoids, cocaine, or nonprescribed opiates.
15. Involvement in the planning and/or conduct of the study (applies to both Noema staff and/or staff at the study site).
16. Judgment by the investigator that the patient should not participate in the study if the patient is unlikely to comply with study procedures, restrictions, and requirements.
17. Previous randomization in the present study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Active; Escalating doses of NOE-105 capsules	Drug: NOE-105; Escalating dose levels of NOE-105 will be given and maximum tolerated dose will be maintained; Other Names: Escalating dose levels of NOE-105
Placebo Comparator: Placebo; Escalating doses of matching placebo	Drug: Placebo; Escalating dose levels of matching Placebo will be given; Other Names: Placebo to match

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change From Baseline to End of 6 Weeks in Total MLGSSS	MLGSSS refers to Maguire-Leal-Garibaldi Self-rated Stuttering Scale. The scale includes ten questions that are assessed on a 0 to 10 scale with 0 being no impact and 10 being highest impact. The total score ranges from 0 to 100 with the higher the score the worse the stuttering.	43 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change From Baseline in Sheehan Disability Scale	The Sheehan Disability Scale (SDS) is a brief, self-report tool that assesses disability or functional impairment in the domains of (1) Work/School life, (2) Social life, and (3) Family life/home responsibilities. Each is assessed on a 10 point scale with 0 being no impact, and 10 being highest impact. Each item is rated from 0 (not at all) to 10 (extremely) impairment. Each domain score is added to provide a total score from 0-30 total score with 0 (no impairment) and 30 is severe impairment. The change from the Baseline assessment have been provided.	Up to 71 days
Change From Baseline to End Point in Clinician-rated Stuttering Severity Instrument-4	SSI-4 is a validated scale to evaluate speech fluency including frequency, duration, physical concomitants and the naturalness of the speech. The score ranges from 10 (mildest) to 46 (most severe). The results show the change from Baseline in the SSI-4	Up to 71 days

Collaborators and Investigators

• Sponsor: Noema Pharma AG
• Investigators: Principal Investigator: Gerald A Maguire, M.D., Clinical Innovations, Inc. dba CITrials (a CenExel company)

Study record dates

Study Major Dates

• Study Start (Actual): July 25, 2022
• Primary Completion (Actual): October 20, 2023
• Study Completion (Actual): November 24, 2023

Study Registration Dates

• First Submitted: June 16, 2022
• First Submitted That Met QC Criteria: October 13, 2022
• First Posted (Actual): October 18, 2022

Study Record Updates

• Last Update Posted (Actual): February 20, 2026
• Last Update Submitted That Met QC Criteria: February 3, 2026
• Last Verified: March 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Neurodevelopmental Disorders; Communication Disorders; Childhood-Onset Fluency Disorder
• Other Study ID Numbers: NOE-CFD-201

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No