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Treatment-resistant SchizophreniaPhase 3ENIGMA-TRS 2NCT07184619

Evenamide, a Glutamate Release Modulator, as Add-On to Standard of Care in Subjects With Documented Treatment-Resistant Schizophrenia

A Phase 3 study testing Evenamide 15 mg bid in people with Treatment-resistant Schizophrenia, run by Newron Pharmaceuticals SPA at 19 sites in 4 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This is a prospective, 12-week, randomized, double-blind, placebo-controlled study, designed to evaluate the efficacy, safety, and tolerability of a dose of evenamide of 15 mg bid, compared to placebo, as add-on treatment in patients with documented treatment-resistant schizophrenia (TRS) who have prospectively… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Treatment-resistant Schizophrenia
What is being tested?
Evenamide 15 mg bid
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
400 participants
Where
19 sitesin 4 countries
Study dates
23 Jan 2026to 31 Mar 2027
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age - 18 years, or older.
  • If female, the subject has a negative pregnancy test at the screening visit and at baseline, is not lactating, and agrees to use adequate contraception, unless not of childbearing potential.
  • Meets current DSM-5-TR criteria for schizophrenia.
  • Has shown treatment-resistance to antipsychotics as per TRRIP working group definition (Howes et al., 2017).
  • Currently receiving "standard of care" therapy of a minimal recommended therapeutic dose of one or more antipsychotic(s).
  • Has a Clinical Global Impression - Severity of disease (CGI-S) rating of "mildly ill" to "among the most extremly ill" at baseline.
Show all 11Show fewer
  • Has a BPRS total score ≥ 45 at screening and baseline.
  • Has a PANSS total score ≥ 70 at baseline.
  • Has a Global Assessment of Functioning (GAF) scale total score ≤ 50.
  • Adherence to prescribed antipsychotic treatment.
  • Patient has provided written informed consent prior to participating in the study.

Who cannot join

  • Current DSM-5-TR diagnosis of schizophreniform disorder, schizoaffective disorder, or other primary psychiatric diagnosis, such as bipolar disorder or major depressive disorder
  • History (within three months of study entry) or current diagnosis of "Substance Use Disorder" as defined by the DSM-5-TR criteria.
  • Severity of current episode of psychosis requires that the patient be hospitalized to stabilize the severity of his/her psychotic symptoms. However, these patients may qualify for the study provided their antipsychotic dose has been stable for 6 weeks prior to screening.
  • History or current diagnosis of other psychiatric or behavioral disorders.
  • Known suicidal risk, or a suicide attempt within the past 2 years.
  • History of neuroleptic malignant syndrome or priapism.
  • Disease/medical condition of any type that may impact the patient's safety or interfere with any of the study evaluations.
  • History or current diagnosis of epilepsy or seizure disorder, or occurrence of a seizure within the past year, or repeated drug-induced seizures.

Trial locations and contacts

19 sites in 4 countries. Contact the study team or a site near you to ask about taking part.

Newron Pharmaceuticals contact

+39 02 610 3461

info@newron.com

19 sites in 4 countries

India9 sites, 9 recruiting
  • All India Institute of Medical Sciences

    Bībīnagar, Telangana, 508126

    Sai Krishna Tikka, +918298041330, saikiatry@gmail.com

    Not yet recruiting
  • Gauhati Medical College and Hospital

    Guwahati, Assam, 781032

    Site Contact, +919101026990, pulakeshd@infoclinconsultancy.com

    Recruiting
  • Seth Sukhlal Karnani Memorial Hospital

    Kolkata, West Bengal, 700025

    Site Contact, +919836074700, sujitsarkhel@gmail.com

    Not yet recruiting
  • Udyan Health Care

    Lucknow, Uttar Pradesh, 226012

    Site Contact, +919651970700, adarshbraincare@gmail.com

    Recruiting
  • Ahana Hospitals LLP

    Madurai, Tamil Nadu, 625020

    Site Contact, +919443772233, vikhram@ahanahospitals.in

    Recruiting
  • Masina Hospital Trust

    Mumbai, Maharashtra, 400027

    Site Contact, +919820164327, akmital@gmail.com

    Recruiting
  • All India Institute Of Medical Sciences

    Nagpur, Maharashtra, 441108

    Sonakshi Jyrwa, +919953954055, sjdanielle@gmail.com

    Not yet recruiting
  • New Manak Healthcare Hospital

    Navi Mumbai, Maharashtra, 400706

    Site Contact, +919321488168, manakhealthcare@gmail.com

    Recruiting
  • Help Hospital

    Vijayawada, Andhra Pradesh, 520002

    Site Contact, +919848229798, rrvemireddy@yahoo.com

    Recruiting

Other trials in India

United States5 sites
  • Grady Behavioral Health Center, -Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine

    Atlanta, Georgia, 30322

    Suspended
  • Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine

    Baltimore, Maryland, 21224

    Suspended
  • UCLA DGSOM, UCLA Health, UCLA Semel Institute

    Los Angeles, California, 90095

    Suspended
  • University of Miami, Miller School of Medicine; Jackson Behavioral Health Hospital

    Miami, Florida, 33136

    Suspended
  • Manhattan Psychiatric Center, The Nathan Kline Institute for Psychiatric Research

    New York, New York, 10035

    Suspended

Other trials in United States

Malaysia4 sites, 4 recruiting
  • Hospital Tuanku Fauziah

    Kangar, 01000

    Site Contact, +60182548066, sitiertina@clinicalresearch.my

    Recruiting
  • Kuala Lumpur Hospital

    Kuala Lumpur, Kuala Lumpur, 50586

    Mohd Hafiz Bin Norzan, +60123927233, drhafizmdresearch@gmail.com

    Recruiting
  • Sentosa Hospital

    Kuching, 93250

    Site Contact, +60198445097, azwani75@gmail.com

    Recruiting
  • Sultan Abdul Halim Hospital

    Sungai Petani, 08000

    Site Contact, +60125055587, tewmeimei@moh.gov.my

    Recruiting

Other trials in Malaysia

Argentina1 site
  • Fundación para el Estudio y Tratamiento de las Enfermedades Mentales

    Buenos Aires, Buenos Aires F.D., 1133

    Active, not recruiting

Other trials in Argentina

About this study

Official title: A Phase III, 12-week, Prospective, Randomized, Double-blind, Placebo-controlled, Parallel-group, Multi-center Study to Determine the Efficacy, Safety, and Tolerability of a Dose of 15 mg Bid of Evenamide as add-on in Patients With Documented Treatment-resistant Schizophrenia, Which is Not Adequately Controlled by a Stable Therapeutic Dose of the Patient's Current Antipsychotic Medication(s)

This is a prospective, 12-week, randomized, double-blind, placebo-controlled study, designed to evaluate the efficacy, safety, and tolerability of a dose of evenamide of 15 mg bid, compared to placebo, as add-on treatment in patients with documented treatment-resistant schizophrenia (TRS) who have prospectively demonstrated inadequate response to their current stable therapeutic dose of an antipsychotic(s). Approximately 400 patients will be randomized equally (1:1) to each of the two treatment groups in this study.

Being tested
Evenamide 15 mg bid, Placebo
Keywords
evenamide, treatment-resistant schizophrenia, antipsychotic, schizophrenia, TRS, add-on treatment
Medical subject headings
Schizophrenia, Treatment-Resistant, Schizophrenia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Evenamide 15 mg bidDrug

    Evenamide capsules 15 mg bid for a total of 12 weeks of add-on treatment

  • PlaceboDrug

    Matching placebo capsules bid for a total of 12 weeks of add-on treatment

Study groups in NCT07184619
Study groupRoleWhat they receive
Evenamide 15 mg bidExperimentalEvenamide capsules 15 mg bid for a total of 12 weeks of add-on treatment
Receives: Drug: Evenamide 15 mg bid
PlaceboPlacebo comparatorMatching placebo capsules bid for a total of 12 weeks of add-on treatment
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from baseline to endpoint (Week 12) on the total score of the Positive and Negative Syndrome Scale (PANSS).

    Efficacy measured by the mean change from baseline to endpoint of Positive and Negative Syndrome Scale [PANSS] total score: a 30-item scale that was designed to assess various symptoms of schizophrenia each rated on a 7-point scale that ranges from 1 (absent) to 7 (extreme psychopathology).

    Measured: From Baseline to Week 12

  2. Incidence of treatment-emergent adverse events (TEAEs), AEs leading to discontinuation (ADOs), and serious AEs (SAEs).

    Safety and tolerability of a dose of evenamide of 15 mg bid, compared to placebo. The assessment of safety and tolerability will be based primarily on the incidence of treatment-emergent adverse events (TEAEs), AEs leading to discontinuation (ADOs), and serious AEs (SAEs).

    Measured: From Baseline to 30-day Safety Follow up (12 Weeks of treament + 30-day safety follow up)

Secondary outcomes (5)
  1. Change from baseline to endpoint (Week 12) on the Clinical Global Impression - Severity of illness (CGI-S) score.

    Efficacy measured by the mean change from baseline to endpoint on the Clinical Global Impression Severity of Illness (CGI-S) scale: a 7-point scale ranging from 1 (no symptoms) to 7 (very severe) to assess the severity of a subject's condition.

    Measured: From Baseline to Week 12

  2. Proportion of patients rated as 'improved' on the CGI-C at endpoint (Week 12).

    Efficacy measured by Clinical Global Impression of Change [CGI-C]: a 7-point scale, ranging from 1 (very much improved) to 7 (very much worse), with a score of 4 indicating "no change". Patients with ratings of 1,2 or 3 are considered as 'improved'.

    Measured: Week 12

  3. Change from baseline to endpoint (Week 12) on the Positive Symptoms sub-scale score of the PANSS.

    Efficacy measured by the mean change from baseline to endpoint on the Positive subscale score of the PANSS: a 7-item subscale designed to assess positive symptoms of schizophrenia each rated on a 7-point scale that ranges from 1 (absent) to 7 (extreme psychopathology).

    Measured: From Baseline to Week 12

  4. Change from baseline to endpoint (Week 12) on the Personal and Social Performance (PSP) scale.

    Efficacy measured by the mean change from baseline to endpoint on the PSP scale: a 100-point single-item rating scale subdivided into 10 equal intervals that designed to assess the routine social functioning of patients with psychiatric disorders.

    Measured: From Baseline to Week 12

  5. Change from baseline to endpoint (Week 12) on the Quality of Life Enjoyment and Satisfaction Questionnaire - Short Form scale (Q-LES-Q-SF).

    Efficacy measured by the mean change from baseline to endpoint on the total score of the Quality of Life Enjoyment and Satisfaction Questionnaire: a 16-item scale, each rated from 1 (very poor) to 5 (very good).

    Measured: From Baseline to Week 12

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Sep 2025
  2. Study start23 Jan 2026
  3. Primary completion31 Mar 2027 (estimated)
  4. Study completion31 Mar 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
400 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07184619
Sponsor's protocol ID
NW-3509/022/III/2024
Acronym
ENIGMA-TRS 2
Status last verified
Sep 2026
First submitted
18 Sep 2025
Last updated
10 Sep 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Anand R, Turolla A, Chinellato G, Sansi F, Roy A, Hartman R. Efficacy and safety of evenamide, a glutamate modulator, added to a second-generation antipsychotic in inadequately/poorly responding patients with chronic schizophrenia: Results from a randomized, double-blind, placebo-controlled, phase 3, international clinical trial. Neuropharmacology. 2025 Mar 15;266:110275. doi: 10.1016/j.neuropharm.2024.110275. Epub 2024 Dec 19.

    PubMed 39708914
  • Anand R, Turolla A, Chinellato G, Roy A, Hartman RD. Therapeutic Effect of Evenamide, a Glutamate Inhibitor, in Patients With Treatment-Resistant Schizophrenia (TRS): Final, 1-Year Results From a Phase 2, Open-Label, Rater-Blinded, Randomized, International Clinical Trial. Int J Neuropsychopharmacol. 2024 Dec 28;28(1):pyae061. doi: 10.1093/ijnp/pyae061.

    PubMed 39661380
  • Anand R, Turolla A, Chinellato G, Roy A, Hartman RD. Phase 2 Results Indicate Evenamide, A Selective Modulator of Glutamate Release, Is Associated With Clinically Important Long-Term Efficacy When Added to an Antipsychotic in Patients With Treatment-Resistant Schizophrenia. Int J Neuropsychopharmacol. 2023 Aug 29;26(8):523-528. doi: 10.1093/ijnp/pyad035.

    PubMed 37349110

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Evenamide 15 mg bid in people with Treatment-resistant Schizophrenia, run by Newron Pharmaceuticals SPA at 19 sites in 4 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 10 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 19 sites in India, United States, Malaysia, Argentina. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Newron Pharmaceuticals (+39 02 610 3461, info@newron.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from baseline to endpoint (Week 12) on the total score of the Positive and Negative Syndrome Scale (PANSS). (time frame: From Baseline to Week 12). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07184619, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Sep 2026; AzTrials last refreshed its copy on 26 Oct 2026.

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