Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 2INTERVENTIONAL

Dazucorilant in Patients With Amyotrophic Lateral Sclerosis

Q: Who can participate in NCT05407324?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

Q: How do I contact the trial site for NCT05407324?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Q: Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Q: Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

A Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study Evaluating Safety and Efficacy of CORT113176 (Dazucorilant) in Patients With Amyotrophic Lateral Sclerosis (DAZALS)

Dazucorilant in Patients With Amyotrophic Lateral Sclerosis (NCT05407324) is a Phase 2 interventional studying Amyotrophic Lateral Sclerosis, sponsored by Corcept Therapeutics. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

About This Trial

The purpose of this 2-part study is to assess the safety and efficacy of CORT113176 (dazucorilant) in patients with Amyotrophic Lateral Sclerosis (ALS).

What Stage of Research Is This?

Phase 2 trials evaluate whether a treatment actually works against Amyotrophic Lateral Sclerosis and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

Target enrollment of 279 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Amyotrophic Lateral Sclerosis subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.

Who May Be Eligible (Plain English)

Who May Qualify: - Male and female patients ≥18 years of age with Sporadic or familial ALS. In Part 1, patients must have a risk of ALS progression characterized by a European Network for the Cure of ALS (ENCALS) risk profile score ≥ -6 and ≤ -3. In Part 2 patients must have a risk of ALS progression characterized by an ENCALS risk profile score ≥ -7 and ≤ -3. - If taking riluzole, edaravone, and/or sodium phenylbutyrate and taurursodiol, must be on a stable dose prior to Screening. Sodium phenylbutyrate and taurursodiol are not permitted for patients enrolled in Part 2 of the study. - Part 2 only: Patients with a pathogenic mutation in superoxide dismutase 1 gene (SOD1) must not be receiving treatment with tofersen or eligible for treatment with tofersen if available. Patients who have received prior treatment with tofersen and discontinued due to safety and/or efficacy reasons prior to Screening are eligible. - Part 2 only: Use of ultra high-dose methylcobalamin for the treatment of ALS is permitted provided the patient has been on a stable dose for ≥11 weeks prior to the Day 1 visit. Who Should NOT Join This Trial: - History of a clinically significant non-ALS neurologic disorder - Inability to swallow capsules. - Blood platelet count \<150,000/mm\^3. - Renal impairment indicated by Estimated Glomerular Filtration Rate (eGFR) ≤30 mL/min/1.73 m\^2. Part 2 only: Patients with a recent history of acute kidney injury should have returned to their baseline renal function prior to enrollment. - Human weakened immune system virus (HIV) or current chronic/active infection with hepatitis C virus or hepatitis B virus. Part 2 only: Known history of HIV or chronic/active infection with hepatitis C or hepatitis B virus; testing does not need to be performed if infection status is unknown. - Women who are pregnant, planning to become pregnant, or are breastfeeding. ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language

Inclusion Criteria: * Male and female patients ≥18 years of age with Sporadic or familial ALS. In Part 1, patients must have a risk of ALS progression characterized by a European Network for the Cure of ALS (ENCALS) risk profile score ≥ -6 and ≤ -3. In Part 2 patients must have a risk of ALS progression characterized by an ENCALS risk profile score ≥ -7 and ≤ -3. * If taking riluzole, edaravone, and/or sodium phenylbutyrate and taurursodiol, must be on a stable dose prior to Screening. Sodium phenylbutyrate and taurursodiol are not permitted for patients enrolled in Part 2 of the study. * Part 2 only: Patients with a pathogenic mutation in superoxide dismutase 1 gene (SOD1) must not be receiving treatment with tofersen or eligible for treatment with tofersen if available. Patients who have received prior treatment with tofersen and discontinued due to safety and/or efficacy reasons prior to Screening are eligible. * Part 2 only: Use of ultra high-dose methylcobalamin for the treatment of ALS is permitted provided the patient has been on a stable dose for ≥11 weeks prior to the Day 1 visit. Exclusion Criteria: * History of a clinically significant non-ALS neurologic disorder * Inability to swallow capsules. * Blood platelet count \<150,000/mm\^3. * Renal impairment indicated by Estimated Glomerular Filtration Rate (eGFR) ≤30 mL/min/1.73 m\^2. Part 2 only: Patients with a recent history of acute kidney injury should have returned to their baseline renal function prior to enrollment. * Human immunodeficiency virus (HIV) or current chronic/active infection with hepatitis C virus or hepatitis B virus. Part 2 only: Known history of HIV or chronic/active infection with hepatitis C or hepatitis B virus; testing does not need to be performed if infection status is unknown. * Women who are pregnant, planning to become pregnant, or are breastfeeding. * Use of non-invasive ventilation (NIV) or mechanical ventilation via tracheostomy, or on any form of oxygen supplementation. * Current or anticipated need of a diaphragm pacing system (DPS). * Currently using glucocorticoids or have a history of regular systemic glucocorticoid use within the last 12 months. * Previous exposure or treatment with glucocorticoid receptor modulators or antagonists.

Treatments Being Tested

DRUG

Dazucorilant 300 mg

300 mg of dazucorilant will be administered once daily in 4 capsules of 75 mg dazucorilant/capsule.

DRUG

Dazucorilant 150 mg

Dazucorilant and placebo will be administered once daily in 4 capsules, 2 capsules with 75 mg dazucorilant/capsule, and 2 capsules of placebo equivalent.

OTHER

Placebo

Placebo will be administered once daily in capsules of placebo equivalent.

DRUG

Dazucorilant

Dazucorilant will be administered once daily in 75-mg capsules.

Locations (20)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

062

Phoenix, Arizona, United States

278

San Francisco, California, United States

287

Neptune City, New Jersey, United States

353

New York, New York, United States

108

Leuven, Belgium

425

Hamilton, Ontario, Canada

273

Montreal, Quebec, Canada

422

Bron, France

258

Lille, France

257

Limoges, France

261

Marseille, France

423

Montpellier, France

259

Nice, France

262

Paris, France

256

Tours, France

255

Berlin, Germany

270

Bonn, Germany

268

Dresden, Germany

260

Hanover, Germany

265

Jena, Germany

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT05407324), the sponsor (Corcept Therapeutics), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT05407324 clinical trial studying?

The purpose of this 2-part study is to assess the safety and efficacy of CORT113176 (dazucorilant) in patients with Amyotrophic Lateral Sclerosis (ALS). The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT05407324?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT05407324?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT05407324. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT05407324. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.