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Spinal Cord InjuriesPhase 1NCT06438471

Novel Soluble Epoxide Hydrolase Inhibitor for Neuropathic Pain in Patients With Spinal Cord Injury

A Phase 1 study testing EC5026 oral tablet in people with Spinal Cord Injuries and Neuropathic Pain, run by EicOsis Human Health Inc. at 1 site in United States.

Recruiting

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

Sites and contacts
Official record
Search all trials

Trial summary

The goal of this clinical trial is to evaluate safety and tolerability of multiple oral doses of EC5026 in male and female patients with neuropathic pain due to traumatic or non-traumatic (degenerative) spinal cord injury. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
EC5026 oral tablet
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
36 participants
Where
1 siteUnited States
Study dates
1 May 2026to Dec 2027
Phase
Phase 1
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

  • Each subject must meet all of the following criteria to be enrolled in this study:
  • Male and female subjects must be 18 and older.
  • Subjects must be willing to provide written informed consent to participate in the study.
  • Subjects must be able to provide own transportation to study site every day for the duration of the study.
  • Subjects with either a traumatic or a non-traumatic SCI may be eligible to enroll in this study. For subjects with complete or incomplete traumatic spinal cord injuries (tSCI), or complete non-traumatic spinal cord injury: Subjects must have a complete or incomplete T6 or below tSCI, or complete non-traumatic SCI of at least 12 months duration, with below-level neuropathic pain identified by the International Spinal Cord Injury Pain (ISCIP) classification criteria. Importantly, subjects must not be ventilator-dependent as detailed in Exclusion Criteria 1. For subjects with degenerative partial spinal cord injuries (pSCI): Subjects must have an incomplete, non-traumatic, SCI at any level secondary to degenerative spinal disorders such as disc degeneration, spinal stenosis, or spondylosis, with associated chronic neuropathic pain. The injury and the associated pain must be of at least 12 months duration. Neuropathic pain should meet the ISCIP classification criteria. Importantly, subjects must not be ventilator-dependent as detailed in Exclusion Criteria 1.
  • Subjects must have completed a minimum of 6 of the 7 daily assessments for average and worst daily pain prior to final screening, using an 11-point numerical rating scale (NRS) for average daily pain intensity, and the arithmetic average daily SCI neuropathic pain score must be ≥4 and ≤9, with a standard deviation less than or equal to 1.2. Daily pain assessment screenings will be done over the phone with the study coordinator after informed consent is obtained.
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  • Subjects must have failed at least 2 classes of medications for their neuropathic pain due to SCI (classes may include antidepressants, antiepileptics, opioids, anti-inflammatories, topical treatments, etc.).
  • Subjects must be in overall stable condition, as determined by pre-study medical history, physical examination, clinical laboratory tests, and 12 lead ECG measurements
  • Subjects must have normal or not clinically significant clinical laboratory test results, as determined by the study investigator, including coagulation panel, blood cell counts, comprehensive metabolic panel analytes, and creatinine clearance (60 cm3/min or greater). Clinical laboratory tests results that are consistent with known, stable comorbidities will be allowed as long as the comorbidities do not represent an exclusion criteria per se.
  • Subjects must have a negative screening for HIV, Hepatitis C, and Hepatitis B within 30 days of randomization.
  • Subjects must have a normal hypothalamic-pituitary-adrenal and hypothalamic-pituitary-gonadal axes screening study.
  • Subjects must have a negative urinary drug screen (UDS) for illicit drugs (marihuana/THC are allowed) and serum ethanol level <80 mg/dL.
  • Male subjects who are not surgically sterile (vasectomized) and their female sexual partners must agree to use contraception during the study period and for 2 months afterward.
  • Male subjects must not donate sperm during the study and for 12 months after receiving the last dose of study drug.
  • Female subjects must be non-pregnant, non-lactating, and either postmenopausal for at least 1 year, or surgically sterile (bilateral tubal ligation ('clipping or tying tubes' or hysterectomy) for at least 3 months, or they must agree to use two forms of highly effective contraception method (less than 1 pregnancy per 100 people using the method for one year), from 28 days and/or their last confirmed menstrual period prior to study enrollment (whichever is longer) until 2 months after clinic discharge. Postmenopausal status will be defined as follow: minimum 1 year; amenorrhea duration of 12 consecutive months and a serum FSH value >40 IU/L; postmenopausal status must be confirmed by an FSH test at Screening). Highly effective contraception methods include: Intra-uterine device (IUD) containing either copper or levonorgestrel (e.g., Mirena®), and/or barrier methods of contraception, including condoms (external or internal) and diaphragm ('cap'). Hormonal methods of contraception (with the exception of hormonal IUD) are not permitted within this study. Female participants will refrain from using hormonal contraceptives for at least 28 days prior to study entry until the end of the study period. Participants/Participant's partner(s) must also use a barrier form of contraception, from the first dose of study drug through until 2 months after the last dose. For all females of childbearing potential, the pregnancy test result must be negative at Screening and Pre-Study Baseline (Day -1).
  • Subjects must be able to speak, read, and understand English sufficiently to allow comprehension and completion of all study assessments.

Who cannot join

  • Subjects meeting any of the following criteria will be excluded from the study:
  • Ventilator-dependent subjects, with the exception of nocturnal use of CPAP or BiPAP.
  • Subjects with pain that is not present every day (chronic) or where the pain description does not have a classic neuropathic phenotype.
  • Subjects with other chronic neuropathic pain conditions, including painful diabetic neuropathy, HIV-associated neuropathic pain, chemotherapy or ethanol-associated neuropathy.
  • Subjects with other pain syndromes that may confound assessment or self-evaluation of the SCI neuropathic pain.
  • Subjects with only negative symptoms, defined as numbness without clear evidence of spontaneous pain, either constant or episodic.
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  • Non-opioid pain medications will be allowed if at a fixed stable dose for more than 1 month prior to Screening with no anticipation of the dose changing during the study, and if they do not interfere with the subject's ability to rate pain as per Investigator's discretion. Allowed non-opioid medications include gabapentin, pregabalin, duloxetine, acetaminophen, ibuprofen, celecoxib, meloxicam, other antidepressants including amitriptyline and other antiepileptics, as well as topical capsaicin and topical lidocaine.
  • Subjects using opioid medications will be required to be on a dose of 60 morphine milligrams equivalents (MME) per day or less, and with a stable dose for at least four (4) weeks prior to consent, with no anticipation of dose changing during the study.
  • Subjects with active Hepatitis A, Hepatitis B and/or Hepatitis C.
  • Subjects with any clinically unstable or significant cardiovascular (including acute coronary syndrome within the prior year to Screening), renal, hepatic, respiratory, gastrointestinal, hematological, endocrine, or infectious disease (including HIV infection).
  • Subjects with clinically significant abnormalities on screening vital signs, laboratory tests, and/or ECG. Subjects with poor venous access will also be excluded.
  • Subjects with a history of disorders of the hypothalamic-pituitary-adrenal axis, including adrenal insufficiency and Cushing's, or with a history of disorders of the hypothalamic-pituitary-gonadal axis, including hypogonadism.
  • Subjects who have used any topical, oral, or intravenous exogenous corticosteroids within 12 weeks and/or intra-articular exogenous corticosteroids within 6 months prior to the start of the trial, or who plan on using them during the study.
  • Subjects who have used fludrocortisone or exogenous testosterone products within 12 weeks prior to the start of the trial or who plan on using them during the study.
  • Subjects who have used (within 14 of randomization) or plan on using during the duration of the study any renin-angiotensin system (RAS)-acting drugs (including angiotensin-receptor blockers, or ARBs; angiotensin-converting enzyme inhibitors, or ACE-inhibitors; and direct renin inhibitors) or mineralocorticoid receptor antagonists (such as spironolactone and eplerenone)
  • Subjects who have used chemotherapy agents, or who have a personal history of cancer or cancer in first degree relatives suggestive of elevated cancer risk, other than nonmetastatic skin cancer that has been completely excised, within 5 years prior to Screening.
  • Subjects with a history of bacterial, fungal, or viral infection requiring treatment with antibiotics, antifungal agents, or antivirals within 1 month prior to randomization.
  • Subjects who have used (within 14 days of randomization) or plan on using during the duration of the study any prescription or over-the-counter drugs that are moderate-strong CYP3A4 inducers or inhibitors.
  • Subjects who have used (within 14 days of randomization) or plan on using during the duration of the study any dietary aids, supplements, or foods that are moderate-strong CYP3A4 inhibitors (e.g., grapefruit juice).
  • Subjects with difficulty in swallowing oral medications.
  • Subjects with serious psychosocial comorbidities as determined by the Investigator.
  • Subjects with current cognitive or major psychiatric disorders, or any other condition that could interfere with compliance with study procedures.
  • Subjects with a positive drug or alcohol test (>80 mg/dL) during Screening and/or admission (a positive THC test will be allowed as long as it consists of minimal social use, per discretion of Investigator), or with a recent history of binge drinking within 1 week of randomization.
  • Subjects who have used any other investigational drug within 1 month prior to enrollment. If the investigational drug is known to have a long half-life, a longer washout period will be done.
  • Subjects with a presence or history of active gastrointestinal disorder, including esophageal or gastroduodenal ulceration, or renal, hepatic, or coagulant disorder within 1 month prior to enrollment.
  • Subjects with a family history of significant cardiac disease (i.e., sudden death in first degree relative; myocardial infarction before the age of 50).
  • Subjects with confirmed COVID-19, or suspected COVID-19 (e.g., developed symptoms of a respiratory infection such as cough, sore throat, shortness of breath, or fever, but did not get tested for COVID 19) within 30 days of randomization.
  • Subjects who have received a COVID-19 vaccine within 30 days of randomization or are planning on receiving it during the study duration.
  • Exclude subjects with spinal cord injury at T6 or higher with a history of neurogenic bladder.
  • Exclude subjects with documented autonomic dysreflexia (AD) or a history of episodes consistent with undiagnosed AD as determined by an experienced clinician.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

William K Schmidt, PhD contact

650-438-3018

wkschmidt@eicosis.com

United States1 site, 1 recruiting
  • AU Medical Center

    Augusta, Georgia, 30912

    Martha Farrough, MFARROUGH@augusta.edu

    Recruiting

Other trials in United States

About this study

Official title: Development of a Novel Soluble Epoxide Hydrolase Inhibitor as a Strategy for Treating Neuropathic Pain in Patients With SCI

The goal of this clinical trial is to evaluate safety and tolerability of multiple oral doses of EC5026 in male and female patients with neuropathic pain due to traumatic or non-traumatic (degenerative) spinal cord injury. The main question it aims to answer is whether EC5026 is safe and well tolerated in SCI patients with neuropathic pain. In addition, this trial will also study the effects of EC5026 on pain.

Researchers will compare EC5026 to placebo.

Read more

Participants will be asked to:

  • Take EC5026 or placebo in a masked fashion, once daily, for 14 consecutive days.
  • Undergo physical exams, vital signs assessments, ECGs, and blood draws
  • Complete assessments of pain, sleep, functional status, and perception of change
Read the detailed description

EC5026 has been shown to be effective in preclinical pain models of pain, including inflammatory and neuropathic pain subtypes. Three Phase 1 studies of EC5026 have been conducted in healthy volunteers; a Phase 1a Single Ascending Dose (SAD) study, a Phase 1a Fed-Fasted study, and a Phase 1b Multiple Ascending Dose (MAD) study. The Phase 1b MAD study evaluated the safety, tolerability, and PK of 2 sequential ascending dose regimens of oral EC5026, administered once daily for 7 consecutive days, in healthy volunteers. The present study will evaluate the safety and tolerability, as well as target engagement and pharmacodynamics, of EC5026 administered as multiple doses in subjects with neuropathic pain due to traumatic or non-traumatic (degenerative) spinal cord injury.

Being tested
EC5026 oral tablet, Placebo oral tablet
Medical subject headings
Spinal Cord Injuries, Neuralgia, Intervertebral Disc Degeneration, Spinal Stenosis, Spondylosis

What participants receive

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

  • EC5026 oral tabletDrug

    There will be two ascending dose regimens of EC5026, which will be administered over two consecutive Treatment Periods. During each Treatment Period, EC5026 will be administered orally once daily for 7 consecutive days, with a loading dose on Day 1 and a maintenance dose on Days 2-7 of each treatment period. All study subjects will be enrolled in both Treatment Periods and will receive both dose regimens consecutively, for a total duration of 14 days.

    Oral doses of EC5026 tested in each Treatment Period:

    Treatment Period 1: 6 mg loading dose on Day 1 / 2 mg Maintenance dose on Days 2-7 Treatment Period 2: 8 mg loading dose on Day 8 / 4 mg Maintenance dose on Days 9-14

  • Placebo oral tabletDrug

    Participants will be administered a matching oral placebo for 14 consecutive days.

Study groups in NCT06438471
Study groupRoleWhat they receive
EC5026ExperimentalMultiple oral doses of EC5026
Receives: Drug: EC5026 oral tablet
PlaceboPlacebo comparatorMatching oral placebo
Receives: Drug: Placebo oral tablet

What is being measured

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

  1. Incidence of Adverse Events (AEs) and Serious Adverse Events (SAE) [Safety and Tolerability]

    All AEs reported or observed during the study will be recorded on the electronic case report forms (eCRF). Information to be collected includes drug treatment, type of event, time of onset, dosage, investigator-specified assessment of severity and relationship to study drug, time of resolution of the event, seriousness, any required treatment or evaluations, and outcome. Any AEs resulting from concurrent illnesses, reactions to concurrent illnesses, reactions to concurrent medications, or progression of disease states must also be reported. All AEs will be followed until they are resolved, stable, or judged by the investigator to be not clinically significant. The Medical Dictionary for Regulatory Activities will be used to code all AEs.

    Measured: 30 days

Timeline

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

  1. First posted3 Jun 2024
  2. Study start1 May 2026
  3. Primary completionDec 2027 (estimated)
  4. Study completionDec 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 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
36 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06438471
Sponsor's protocol ID
EC5026-1-04
Other IDs
CDMRP-SC200001
Status last verified
Feb 2026
First submitted
24 May 2024
Last updated
10 Jul 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing EC5026 oral tablet in people with Spinal Cord Injuries and Neuropathic Pain, run by EicOsis Human Health Inc. at 1 site in United States.

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 16 inclusion and 30 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 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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 William K Schmidt, PhD (650-438-3018, wkschmidt@eicosis.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence of Adverse Events (AEs) and Serious Adverse Events (SAE) [Safety and Tolerability] (time frame: 30 days). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 Jul 2026.

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