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TerminatedNCT04466410Updated Jan 23, 2023

Safety and Efficacy of XT-150 for Treatment of Neuropathic Pain

A Phase 1 interventional study of XT-150 and Placebo in Neuropathic Pain, sponsored by Xalud Therapeutics, Inc.. Terminated at 4 sites in Australia. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2023-01-23.

Sponsored by Xalud Therapeutics, Inc. · Phase 1, Interventional, and Treatment

Why this study was terminated
Failure to enroll a sufficient number of patients.
Phase
Phase 1
Study type
Interventional
Enrollment
5
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Preliminary Evaluation of Safety, Tolerability, and Efficacy of XT-150 for the Treatment of Neuropathic Pain. Intrathecally administered, single injection.

Read the detailed description

XT-150 has been safe and well tolerated in clinical studies of intra-articular knee injections for osteoarthritis.

This is the initial study of XT-150 for treatment of neuropathic pain. For this indication XT-150 must be administered by intrathecal injection. Doses used in the osteoarthritis studies will be studied for neuropathic pain.

Upon safety reviews, doses will be increased by cohorts.

The study is placebo controlled and blinded.

02

Conditions studied

  • Neuropathic Pain

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Keywords

  • XT-150
  • Plasmid Gene Therapy
  • IL-10
03

In context

Neuralgia

1,100 studies on the registry are indexed under Neuralgia; 241 are open to participants now.

This study's enrollment of 5 is below the median of 52 across 831 interventional studies indexed under Neuralgia.

Browse Neuralgia studies →

Lead sponsor

Xalud Therapeutics, Inc. is the lead sponsor of 8 studies on the registry; 1 is open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 2 (40%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Signed Form
  2. Male or female, between 18 and 80 years of age, inclusive
  3. Clinical indication: Lumbar disk disease with no prior lumbar surgery with radicular pain symptoms and/or signs of compressive neuropathy
  4. At screening and baseline, a pain intensity score > 60 using the visual analog scale of pain intensity [VASPI] (0-100 mm scale) and a participant reported history of pain in the past 3 or more months
  5. Medically stable as determined by the Principal Investigator in consultation with the Sponsor's Medical Monitor, based on pre-study medical history, physical examination, and clinical laboratory tests
  6. In the judgment of the Principal Investigator, acceptable vital signs: blood pressure; resting heart rate; respirations, and oral temperature
  7. >6 months as determined by the Principal Investigator
  8. Female participants of , and those \<1 year , must be practicing highly effective methods of such as hormonal methods (e.g., combined oral, implantable, injectable, or transdermal contraceptives), double barrier methods (e.g., condoms, sponge, diaphragm, or vaginal ring plus spermicidal jellies or cream), or total abstinence from heterosexual intercourse for a minimum of 1 full menstruation cycle before study drug administration and agree to continue abstinence for 1 full menstruation cycle after the study is completed
  9. Male participants who are heterosexually active, and not surgically sterile, must agree to use effective contraception for the duration of the study and for 1 month after the study is completed
  10. Stable medical regimen for ≥1 month before screening assessments
  11. Have suitable lumbar anatomy for intrathecal injection as determined by MRI or X-Ray in the last 6 months.
  12. Willing and able to return for the follow-up (FU) visits
  13. Able to read and understand study instructions, and willing and able to comply with all study procedures
  14. Adequately informed of the nature and risks of the study and give written informed consent before receiving any study specific assessments or procedures
  15. Stable use of non-prescription pain therapy, including massage, TENS, physiotherapy osteopathy, chiropractic and acupuncture for 2 months prior and throughout the study period

Exclusion criteria

Exclusion Criteria:

Participants must NOT meet any of the following exclusion criteria:

  1. , allergy, or significant reaction to any ingredient of the study drug
  2. Any spinal deformity preventing intrathecal injection or making intrathecal injection unsafe
  3. Prior history of lumbar surgery, including fusion and microdiscectomy
  4. History of epidural block or facet block or injection in the last 6 months
  5. Current unstable angina, uncontrolled congestive heart failure, or >1+ pitting edema of lower extremities
  6. History of acute myocardial infarction, , stroke, or seizure within 3 months of screening visit
  7. Severe chronic obstructive or restrictive pulmonary disease
  8. Current insulin dependent diabetes mellitus
  9. Current conditions or documented immunodeficiency
  10. History of therapy; high-potency systemic steroids in the last 3 months
  11. Current treatment with systemic immunosuppressive (systemic corticosteroid therapy [equivalent to >10mg/day prednisone] or other strong immunosuppressant)
  12. Current or history of central nervous system cancer
  13. Any (EXCEPTION: localized non-melanoma skin cancers) within 5 years before the screening visit or currently receiving systemic chemotherapy, radiation therapy, or a surgical stabilization procedure
  14. Significant hepatic disease as indicated by clinical laboratory results for the following: ≥3 times the (ULN) for , alanine aminotransferase, ≥ 2.5 time ULN alkaline phosphatase, or ≥1.5 times ULN for total )
  15. Severe anemia (Grade 3; \<8.0 g/dL, \<4.9 mmol/L, \<80 g/L; transfusion indicated), Grade 1 white cell counts (lymphocytes \<LLN - 800/mm3; \<LLN - 0.8 x 109 /L, neutrophils \<LLN - 1500/mm3; \<LLN - 1.5 x 109 /L)
  16. Significant renal disease as indicated by creatinine ≥1.5 times the upper limit of normal or \<80 mL/minute (Cockcroft-Gault formula estimate)
  17. Confirmed positive for , virus, or virus
  18. Significant psychological conditions; dementia, major depression, or altered mental state that in the opinion of the Investigator will interfere with study participation
  19. Current treatment with systemic antibiotics or antivirals (EXCEPTION: topical treatments)
  20. Current treatment with anticoagulants /antiplatelet medications except for low dose aspirin or low dose aspirin-containing compounds. Participants, if medically feasible, can interrupt anticoagulant therapy by following local medical practice protocol for intrathecal injections for participants on anticoagulant, antiplatelet therapy.
  21. Current use of systemic corticosteroids (equivalent to >10mg/day prednisone)
  22. Known or suspected history of active alcohol or illicit drug abuse within 1 year before the screening visit
  23. Women who are pregnant or nursing
  24. Use of any drug or device within 1 month before randomization or current participation in a trial that included intervention with a drug or device; or currently participating in an investigational drug or device study
  25. Any condition that, in the opinion of the Principal Investigator, could compromise the safety of the participants, the participant's ability to communicate the study staff, or the quality of the data
  26. Presence of an implanted intrathecal infusion system or peripheral neurostimulator
  27. Presence of a generalized pain disorder such as fibromyalgia or complex regional pain syndrome that in the opinion of the PI may impact on evaluation of response to the study drug
  28. Diagnosis of peripheral neuropathy of the lower extremities which in the opinion of the PI, might interfere with the participant's ability to assess the effect of the study drug on the radicular signs and/or symptoms
Terms in these criteria, in plain language(20)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
5 participants (actual)

Study arms

  • Experimental
    0.015 milligram (mg) XT-150

    0.015 mg of XT-150. Cohort 1 of the study

    Biological: XT-150

  • Experimental
    0.15 mg XT-150

    0.15 mg of XT-150. Cohort 2 of the study

    Biological: XT-150

  • Experimental
    0.45 mg XT-150

    0.45 mg of XT-150. Cohort 3 of the study

    Biological: XT-150

  • Placebo comparator
    Placebo

    PBS for injection.

    Biological: Placebo

Interventions

  • BiologicalXT-150

    Single bolus intrathecal injection

    Also known as: IL-10 transgene plasmid DNA injected intrathecally

  • BiologicalPlacebo

    Placebo is a sterile phosphate-buffered saline

06

What researchers measure

Primary outcomes

  1. Number of participants with Treatment-Emergent Adverse Events and Serious Adverse Events

    Time frame: 6 months

  2. Number of participants with abnormal vital signs

    Time frame: 6 months

  3. Number of participants with clinically significant abnormal physical examination findings

    Time frame: 6 months

  4. Number of participants with anti-interleukin (IL)-10 antibodies

    Time frame: 6 months

  5. Number of participants with IL-10 Protein

    Time frame: 6 months

  6. Number of participants with abnormal clinical and hematology parameters

    Time frame: 6 months

  7. Number of participants with plasmid DNA present in whole blood

    Time frame: 6 months

  8. Number of participants with cytokines in Cerebrospinal fluid

    Time frame: 6 months

07

Study locations

4 sites
  • Genesis Research Services
    Newcastle, New South Wales 2292, Australia
  • CerCare
    Wayville, South Australia 5034, Australia
  • Metro Pain Group
    Clayton, Victoria 3168, Australia
  • Alfred Health
    Melbourne, Victoria 3004, Australia
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04466410
Lead sponsor
Xalud Therapeutics, Inc.
Responsible party
Sponsor
First posted
Jul 10, 2020
Start date
Apr 14, 2021
Primary completion
Sep 27, 2022
Completion
Sep 27, 2022
Last update
Jan 23, 2023

Study contacts

Howard Rutman, MD,MBA
study director · Xalud Therapeutics, Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Jan 2023. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: XT-150

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