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Trial details imported from

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Registration number
Ethics application status
Date submitted
Date registered
Date last updated

Titles & IDs
Public title
Preliminary Evaluation of Safety, Tolerability, and Efficacy of XT-150 for the Treatment of Osteoarthritic Pain
Scientific title
A Placebo-controlled, Preliminary Evaluation of Safety, Tolerability, and Efficacy of Ascending Doses of XT-150 for the Treatment of Osteoarthritic Pain
Secondary ID [1] 0 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Osteoarthritis, Knee 0 0
Condition category
Condition code
Musculoskeletal 0 0 0 0

Study type
Description of intervention(s) / exposure
Other interventions - XT-150

Experimental: Dose 1 - Lowest trial dose of XT-150

Experimental: Dose 2 - Second, escalating dose of XT-150

Experimental: Dose 3 - Third, escalating dose of XT-150

Placebo Comparator: Saline placebo - 2 of 8 participants in each cohort will randomly be assigned to placebo

Other interventions: XT-150
IL-10 transgene DNA plasmid injected into the knee synovial capsule

Intervention code [1] 0 0
Other interventions
Comparator / control treatment
Control group

Primary outcome [1] 0 0
Incidence of Treatment-Emergent Adverse Events [Safety] - Clinical Pathology, Adverse Events
Timepoint [1] 0 0
180 days post treatment
Secondary outcome [1] 0 0
Verbal Numerical Rating Scale - 0 - 10 Pain assessment
Timepoint [1] 0 0
180 days post treatment

Key inclusion criteria
1. Male or female, between 18 and 90 years of age, inclusive. Women who are not of
child-bearing potential in the same age range.

2. Sufficiently severe OA of knee to require/have recommended knee replacement surgery or
be unsuitable for knee replacement surgery or be unsuitable for knee replacement
surgery based on co-morbidities or orthopedic considerations; be free of local or
intra-articular infection.

3. Symptomatic disease because of osteoarthritis, defined as one or more of the following
Verbal Numerical Rating Scale (VNRS) scores:

1. a worst pain of at least 7 at any time during the preceding week (based on scale
of 0 to 10, with 10 representing "pain as bad as you can imagine").

2. a worst stiffness of at least 7 at any time during the preceding week (based on a
scale of 0 to 10, with 10 representing "stiffness as bad as you can imagine").

4. Stable analgesic regimen during the 4 weeks prior to enrollment.

5. Inadequate pain relief (mean >5 mean on Brief Pain Inventory-Severity Scale) from
prior therapies lasting 3 months.

6. In the judgment of the Investigator, acceptable general medical condition

7. Life expectancy >6 months

8. Male participants 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.

9. Have suitable knee joint anatomy for intra-articular injection

10. Willing and able to return for the follow-up (FU) visits

11. Able to reliably provide pain assessment

12. Able to read and understand study instructions, and willing and able to comply with
all study procedures
Minimum age
18 Years
Maximum age
90 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
1. Hypersensitivity, allergy, or significant reaction to any ingredient of the study
drug, including double-stranded DNA, mannose, and sucrose

2. Scheduled knee replacement within 4 months; participant agrees not to schedule a knee
replacement appointment within 4 months of study treatment

3. History of rheumatoid arthritis of the knee

4. High peri-operative risks which in the judgment of the investigator preclude a safe
knee injection procedure (e.g., poorly controlled diabetes, cardiac inadequacy such as
NYHA class > II, G4 glomerular filtration rate [eGFR < 30 mL/min by Cockcroft-Gault])

5. Current treatment with immunosuppressive (systemic corticosteroid therapy [equivalent
to >10mg/day prednisone] or other strong immunosuppressant)

6. History of immunosuppressive therapy; high-potency systemic steroids in the last 3

7. Currently receiving systemic chemotherapy or radiation therapy for malignancy

8. Clinically significant hepatic disease as indicated by clinical laboratory results =3
times the upper limit of normal for any liver function test (e.g., aspartate
aminotransferase, alanine aminotransferase, lactate dehydrogenase)

9. Severe anemia (Grade 3; hemoglobin <8.0 g/dL, <4.9 mmol/L, <80 g/L; transfusion
indicated), uncontrolled coagulopathy (Grade 1, prolonged activated partial
prothrombin time (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)

10. Positive serology for human immunodeficiency virus, hepatitis B virus, or hepatitis C
virus within 4 weeks of commencing the study

11. Significant neuropsychiatric conditions; dementia, major depression, or altered mental
state that in the opinion of the Investigator will interfere with study participation

12. Current treatment with systemic antibiotics or antivirals (EXCEPTION: topical

13. Current treatment with anticoagulants, other than low-dose aspirin, prescribed for new
onset of symptoms in 3 months before screening visit.

14. Known or suspected history of active alcohol or intravenous/oral drug abuse within 1
year before the screening visit

15. Women of child-bearing potential

16. Use of any investigational 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.

17. Any condition that, in the opinion of the Principal Investigator, could compromise the
safety of the participant, the participant's ability to communicate the study staff,
or the quality of the data

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Other design features
Phase 1
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
CMAX Clinical Research Pty Ltd in collaboration with University of Adelaide - Adelaide
Recruitment postcode(s) [1] 0 0
5005 - Adelaide

Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
Xalud Therapeutics, Inc.

Ethics approval
Ethics application status

Brief summary
Preliminary Evaluation of Safety, Tolerability, and Efficacy of XT-150 for the Treatment of
Osteoarthritic Pain - Dose escalation
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 0 0
Mark Rickman, MD
Address 0 0
University of Adelaide
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries

Summary results
Other publications