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Safety and PK of Intrathecal CNTX-3001 for Intractable Chronic Low Back Pain

A Study to Evaluate the Safety, Pharmacokinetics and Efficacy of Single Ascending Doses of Intrathecal CNTX-3001 in Subjects With Intractable Chronic Moderate to Severe Low Back Pain

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07122453
Enrollment
16
Registered
2025-08-14
Start date
2026-03-01
Completion date
2027-01-01
Last updated
2026-03-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lower Back Pain

Brief summary

This clinical study is being conducted to evaluate the safety, tolerability, plasma pharmacokinetics and efficacy of an investigational drug called CNTX-3001. This Phase 1 study is the first time that CNTX-3001 will be given to people (first-in-human study). The study is being done to evaluate whether CNTX-3001, given into the intrathecal space by lumbar puncture, can be administered safely to participants who have been diagnosed with intractable chronic moderate to severe low back pain and who have not responded well to other treatments in the past. CNTX-3001 is a novel, non-opioid small molecule

Interventions

DRUGCNTX-3001

non-opioid analgesic

DRUGPlacebo

Placebo product

Sponsors

Centrexion Therapeutics
Lead SponsorINDUSTRY
National Institute of Neurological Disorders and Stroke (NINDS)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

Inclusion: * Have stable intractable, chronic moderate to severe low back pain * Must have failed all 3 of the following categories of therapies: 1. Physical medicine modalities for at least 6 weeks (e.g., physical therapy, occupational therapy, or chiropractic treatment directed at chronic low back pain) 2. Three or more classes of pharmacologic treatments 3. One or more non-surgical and/or surgical interventions addressing the primary cause of chronic low back pain * If the intractable low back pain is accompanied by radicular pain, back pain must be dominant over leg pain and may not radiate below the knee * Has normal leg strength in both legs (able to stand/walk) * Willing and able to undergo the lumbar puncture * On a stable analgesic regimen, or a stable dose of an opioid medication for \>3 months * Non- or ex-smoker and has not used any nicotine-containing products within 3 months * Men or women able to abide by reproductive and contraceptive requirements * Has a body mass index (BMI) between 18 and 35 kg/m2, with weight ≥60 kg Exclusion * Substantial increase or decrease in pain over the prior 3 months. * Low back pain that only occurs with specific activities or body positions. * Has asthma or other severe respiratory disease requiring daily prescription medication * History of, or current cancer (except basal cell carcinoma), cardiac disease, immunological disorders, meningitis, or bleeding disorders * Confirmed diagnosis of fibromyalgia or myalgic encephalomyelitis Exclusion * Substantial increase or decrease in pain over the prior 3 months * Low back pain that only occurs with specific activities or body positions * Has asthma or other severe respiratory disease requiring daily prescription medication * History of, or current cancer (except basal cell carcinoma), cardiac disease, immunological disorders, meningitis, or bleeding disorders * Confirmed diagnosis of fibromyalgia or myalgic encephalomyelitis

Design outcomes

Primary

MeasureTime frameDescription
Incidence of treatment emergent adverse eventsFrom baseline to the end of treatment visit (Day 7)Number of participants with TEAEs, which includes laboratory test variables

Secondary

MeasureTime frame
Maximum Observed Plasma Concentration (Cmax) of CNTX-3001Pre dose to up to 4 hours post dose
Time to Maximum Observed Plasma Concentration (Tmax) of CNTX-3001Pre dose to up to 4 hours post dose
Area Under the Concentration-time Curve up to the Last Measurable Concentration of CNTX-3001Pre dose to up to 4 hours post dose

Countries

United States

Contacts

CONTACTClinical Operations
clinicalops@centrexion.com(617) 837-6911

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 24, 2026