ClinicalTrials.gg
CompletedNCT03477487Updated Nov 8, 2019

Safety, Tolerability, and Efficacy of XT-150 for the Treatment of Osteoarthritic Pain

A Phase 1 interventional study of XT-150 in Osteoarthritis, Knee, sponsored by Xalud Therapeutics, Inc.. Completed at 1 site in United States. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2019-11-08.

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

From the registry’s dates

  • Primary completion was Jul 2019, 7 years 3 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
32
Allocation
Non-randomized
Ages
18 Years to 90 Years
Sex
All
01

Study summary

Evaluation of Safety, Tolerability, and Efficacy of XT-150, a plasmid DNA with a variant of human IL-10 transgene. XT-150 will be a single injection into the knee synovial capsule for the Treatment of Osteoarthritic Pain.

Read the detailed description

Phase 1 dose escalation study to evaluate the safety, tolerability, and efficacy of a plasmid DNA encoding a variant of human IL-10. This 6-month study will follow subjects with severe osteoarthritis of the knee. Safety labs, physical exams, and blood levels of the IL-10 variant will be assessed for tolerability and any adverse events associated with the treatment.

02

Conditions studied

  • Osteoarthritis, Knee

Keywords

  • inflammation
  • Cytokines
  • Interleukin-10
  • Gene therapy
03

In context

Osteoarthritis, Knee

3,292 studies on the registry are indexed under Osteoarthritis, Knee; 623 are open to participants now.

This study's enrollment of 32 is below the median of 68 across 2,714 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee 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 90 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. Male or female, between 18 and 90 years of age, inclusive
  2. Sufficiently severe OA of the knee to meet accepted criteria for knee arthroplasty
  3. Free of intra-articular infection, or infection at the injection site.
  4. Symptomatic disease because of osteoarthritis, defined as one or more of the following Visual Analog Scale of Pain Intensity (VASPI) scores:

    1. a worst pain of at least 70 at any time during the preceding week (based on scale of 0 to 100, with 100 representing "pain as bad as you can imagine").
    2. a worst stiffness of at least 70 at any time during the preceding week (based on a scale of 0 to 100, with 100 representing "stiffness as bad as you can imagine").
  5. Stable analgesic regimen during the 4 weeks prior to enrollment.
  6. Inadequate pain relief (minimum ≥5 mean on the Brief Pain Inventory-Severity Scale) lasting ≥3 months.
  7. In the judgment of the Investigator, acceptable general medical condition
  8. >6 months
  9. Female subjects of , and those \<1 year , must be practicing 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 total abstinence from heterosexual intercourse for a minimum of 1 month before study drug administration and agree to continue prevention methods for 3 months after participation in the study is completed.
  10. Male subjects who are heterosexually active and not surgically sterile must agree to use effective contraception, including abstinence, for the duration of the study and for 3 months after the study is completed.
  11. Have suitable knee joint anatomy for intra-articular injection
  12. Willing and able to return for the follow-up (FU) visits
  13. Able to reliably provide pain assessment
  14. Able to read and understand study instructions, and willing and able to comply with all study procedures

Exclusion criteria

Exclusion Criteria:

    1. , allergy, or significant reaction to any ingredient of the study drug, including double-stranded DNA, mannose, and sucrose
  1. Subject plans knee arthroplasty within 4 months, irrespective of the outcome of the trial or other conservative therapies
  2. High peri-procedural risks which in the judgment of the investigator preclude a safe knee injection procedure (e.g., poorly controlled diabetes, cardiac inadequacy such as class > II, G4 [eGFR \< 30 mL/min by ])
  3. Current treatment with immunosuppressives ( therapy equivalent to >10mg/day prednisone); or other strong
  4. History of systemic immunosuppressive therapy; steroids (equivalent to >10mg/day prednisone) in the last 3 months
  5. Currently receiving systemic chemotherapy or radiation therapy for
  6. hepatic disease as indicated by clinical laboratory results ≥3 times the for any liver function test (e.g., , alanine aminotransferase, lactate dehydrogenase)
  7. Severe anemia (Grade 3; \<8.0 g/dL, \<4.9 mmol/L, \<80 g/L; transfusion indicated), uncontrolled coagulopathy (Grade 1, prolonged activated partial (aPTT) > upper limit of normal (ULN) to 1.5xULN), or bleeding diathesis, Grade 1 white cell counts (lymphocytes \<LLN - 800/mm3; \<LLN - 0.8 x 10e9 /L, neutrophils \<LLN - 1500/mm3; \<LLN - 1.5 x 10e9 /L)
  8. Positive serology for , virus, or virus within 4 weeks of commencing the study
  9. Significant neuropsychiatric conditions; dementia, major depression, or altered mental state that in the opinion of the Investigator will interfere with study participation
  10. Current treatment with systemic antibiotics or antivirals (EXCEPTION: topical treatments)
  11. Current treatment with anticoagulants, other than low-dose aspirin, prescribed for new onset of symptoms in 3 months before screening visit.
  12. Known or suspected history of active alcohol or intravenous/oral drug abuse within 1 year before the screening visit
  13. Women who are pregnant or nursing
  14. Use of any drug or device within 1 month before enrollment or current participation in a trial that included intervention with a drug or device; or currently participating in an investigational drug or device study.
  15. Any condition that, in the opinion of the Principal Investigator, could compromise the safety of the subject, the subject's ability to communicate with the study staff, or the quality of the data
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.

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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

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.

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.

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.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

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.

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).

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

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
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
32 participants (actual)

Study arms

  • Experimental
    Lowest dose

    The lowest dose of XT-150 in the escalation schedule

    Biological: XT-150

  • Experimental
    Second dose

    The 2nd dose of XT-150 in the escalation sequence

    Biological: XT-150

  • Experimental
    Third dose

    The 3rd dose of XT-150 in the escalation sequence

    Biological: XT-150

  • Experimental
    Highest dose

    The highest dose of XT-150 in the escalation sequence

    Biological: XT-150

Interventions

  • BiologicalXT-150

    Human IL-10 variant transgene in a plasmid DNA vector

06

What researchers measure

Primary outcomes

  1. Number of participants with treatment-related adverse events as assessed by CTCAE v4.0

    Clinical, laboratory measures of safety by CTCAE v4.0

    Time frame: 6 months

Secondary outcomes

  1. Visual Analog Scale of Pain Intensity

    Validated index of pain

    Time frame: 6 months

  2. Knee Injury and Osteoarthritis Outcomes Scale

    KOOS

    Time frame: 6 months

  3. WOMAC

    Western Ontario and McMasters University Osteoarthritis Index

    Time frame: 6 Months

  4. Brief Pain Inventory

    Measure of pain associated with osteoarthritis

    Time frame: 6 months

07

Study locations

1 site
  • Neurovations (Napa Pain Institute)
    Napa, California 94558, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jun 2018 to primary completion in Jul 2019, 13 months.

Of 34 industry-sponsored phase 1 interventional studies under Osteoarthritis, Knee, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 9 and three quarters within 21. This study's 13 months is close to that.

Counting every sponsor, half of 61 studies reached it within 20 months; a quarter within 11 and three quarters within 44.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 13, 2018
First posted
Mar 26, 2018
StartActual
Jun 8, 2018
Primary completionActual
Jul 19, 2019
CompletionActual
Sep 30, 2019
Last update
Nov 8, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 8, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03477487
Lead sponsor
Xalud Therapeutics, Inc.
Responsible party
Sponsor
First posted
Mar 26, 2018
Start date
Jun 8, 2018
Primary completion
Jul 19, 2019
Completion
Sep 30, 2019
Last update
Nov 8, 2019

Study contacts

Stephen Collins, MD, PhD
study director · Xalud Therapeutics, Inc.

Oversight

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

Not currently enrolling

This study is completed, as verified in Oct 2019. 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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