NCT03124407

Brief Summary

This is a study of an over-the-counter, capsaicin-based (0.25%) topical analgesic for management of osteoarthritis knee pain meeting the US Food and Drug Administration's (FDAs) Tentative Final Monograph (TFM) guidance for "External Analgesic Drug Products For Over-the-Counter Human Use," published in the Federal Register on February 8, 1983 (final proposed 21 CFR 348). Subjects meeting the inclusion criteria and not meeting the exclusion criteria were randomized into one of four groups: once daily treatment with active product, once daily treatment with product vehicle (no capsaicin), twice daily treatment with active product, and twice daily treatment with product vehicle (no capsaicin), all for 7 consecutive days of treatment. The twice daily treatments were spaced approximately 12 hours apart. Osteoarthritis knee pain was assessed by the 100 mm visual analog scale. Osteoarthritis knee pain assessments were done each day for 28 days. Tolerability data were also collected.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
120

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started Jul 2016

Shorter than P25 for phase_4

Geographic Reach
1 country

3 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 1, 2016

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2016

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2016

Completed
7 months until next milestone

First Submitted

Initial submission to the registry

April 18, 2017

Completed
3 days until next milestone

First Posted

Study publicly available on registry

April 21, 2017

Completed
2.9 years until next milestone

Results Posted

Study results publicly available

March 30, 2020

Completed
Last Updated

October 31, 2024

Status Verified

October 1, 2020

Enrollment Period

3 months

First QC Date

April 18, 2017

Results QC Date

March 13, 2020

Last Update Submit

October 19, 2024

Conditions

Keywords

knee pain, capsaicin, topical, osteoarthritis

Outcome Measures

Primary Outcomes (1)

  • Percentage of Subjects With 50% or Greater Pain Score Reduction From Baseline to 24 Hours After First Dose of Study Drug Treatment.

    To evaluate the percentage of subjects who experience ≥50% reduction in osteoarthritis knee pain in the target knee compared with baseline at 24 hours following the first study drug treatment. Subjects in the once daily application group recorded their knee pain in a diary twice: at 12 hrs (± 1 hr) after their initial application and then again within ≤30 minutes before their daily topical application which was to be applied at 24 hrs (± 1 hr) after their previous day's application on all subsequent study days. Subjects in the twice daily application group recorded their knee pain in a diary within ≤30 minutes before each application on all study days. Subjects used a 100mm visual analogue scale when assessing their knee pain.

    Study Day 2

Secondary Outcomes (2)

  • Percentage of Subjects With 50% or Greater Pain Score Reduction From Baseline to Day 8 Post Study Drug Treatment.

    Study Days 1-7

  • Percentage of Subjects With 50% or Greater Pain Score Reduction From Baseline to Day 28 Post Study Drug Treatment.

    Study Days 1-28

Study Arms (4)

Once daily-Active

ACTIVE COMPARATOR

40 subjects receiving once daily application of complete drug product (contains 0.25% capsaicin) to the knee

Drug: Capsaicin Topical Solution

Once daily-Vehicle

PLACEBO COMPARATOR

20 subjects receiving once daily application of drug product vehicle (i.e., with no capsaicin) to the knee

Other: Drug product vehicle

Twice daily-Active

ACTIVE COMPARATOR

40 subjects receiving twice daily application of complete drug product (contains 0.25% capsaicin) to the knee

Drug: Capsaicin Topical Solution

Twice daily-Vehicle

PLACEBO COMPARATOR

20 subjects receiving twice daily application of drug product vehicle (i.e., with no capsaicin) to the knee

Other: Drug product vehicle

Interventions

Over-the-counter Tentative Final Monograph compliant product with 0.25% capsaicin

Once daily-ActiveTwice daily-Active

This is the vehicle for the active treatment drug product, but without capsaicin

Once daily-VehicleTwice daily-Vehicle

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Subject has granted written informed consent.
  • Subject is at least 18 years of age.
  • Subject has knee pain with radiographic evidence of osteoarthritis in at least one knee (including an x-ray within the previous 2 years).
  • Subject's osteoarthritis knee pain has been present for ≥ 6 months.
  • Subject has osteoarthritis knee pain of ≥ 50 mm in one knee based on the visual analog scale at screening.
  • Subject has regularly used topical over-the-counter pain relief products or over-the-counter oral medication (acetaminophen or ibuprofen) to treat/manage pain from osteoarthritis in the previous 3 months.
  • Subject is in good general health and free of any disease state or physical condition which, in the investigator's opinion, exposes the subject to an unacceptable risk by study participation.
  • Subject is capable of understanding and complying with all instructions and study procedures, including the ability to accurately evaluate their symptoms.
  • Subject must be a male or non-pregnant female. If female, subject must be past childbearing age or otherwise must test negative for pregnancy. Males and females must agree to use effective birth control during the study or for at least 30 days after last dose of study investigational product, if unable to complete the study.

You may not qualify if:

  • Subject has spontaneously improving or rapidly deteriorating osteoarthritis or knee pain.
  • Subject has rheumatoid or psoriatic arthritis, or a form of arthritis inconsistent with a diagnosis of osteoarthritis.
  • Subject has used any topical steroids on or in the vicinity of the knees within 1 week prior to Screening, or has had a knee injection within 1 month prior to Screening.
  • Subject is currently taking prescription pain medication.
  • Subject has shaved their knees within 2 days of first day of treatment (Day 1).
  • Subject has used any capsaicin containing product on or in the vicinity of the knees within 2 weeks prior to first day of treatment (Day 1).
  • Subject has used any topically applied products (including emollient/moisturizer) on or in the vicinity of the knees within 2 weeks prior to first day of treatment (Day 1).
  • Subject has used topical therapy on the knees that, in the investigator's opinion, might affect the study evaluations of signs and/or symptoms.
  • Subject has broken or damaged skin on their knees, or an open wound near the knees.
  • Subject has a history of allergy/sensitivity to topical substances.
  • Subject is not able to understand the nature, importance, or consequences of the study.
  • Subject has a psychiatric disorder or has significant anxiety or depression that, in the investigator's opinion, could interfere with the subject's ability to accurately assess their pain, adhere to study instructions, or complete the study.
  • Subject has hypertension that is not adequately controlled (medication to treat hypertension is allowed), vascular disease, psychological disorder, or other condition that, in the investigator's opinion, contraindicate the use of medication.
  • Is obese with a Body Mass Index (BMI) of greater than 40 kg/m2.
  • Subject requires a surgical procedure in the immediate future.
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Research Center

Clearwater, Florida, United States

Location

Research Center

Tampa, Florida, United States

Location

Research Center

Dallas, Texas, United States

Location

MeSH Terms

Conditions

Osteoarthritis, KneeOsteoarthritis

Interventions

Dosage Forms

Condition Hierarchy (Ancestors)

ArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic Diseases

Intervention Hierarchy (Ancestors)

Pharmaceutical PreparationsTechnology, PharmaceuticalInvestigative Techniques

Results Point of Contact

Title
Vice President Clinical Operations
Organization
Vizuri Health Sciences

Study Officials

  • Alan A Ryan, Ph.D.

    Palm Beach Research, Inc

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
OTHER
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Masking Details
Study medications were number coded only and identical in physical characteristics. Randomization coding was held only at the manufacturing site until data base lock.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Active treatment compared to drug vehicle as placebo
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 18, 2017

First Posted

April 21, 2017

Study Start

July 1, 2016

Primary Completion

October 1, 2016

Study Completion

October 1, 2016

Last Updated

October 31, 2024

Results First Posted

March 30, 2020

Record last verified: 2020-10

Data Sharing

IPD Sharing
Will not share

Access to anonymized individual participant level data will not be provided for this trial. Further details on Astellas' data sharing policy can be found at https://www.clinicaltrials.astellas.com/transparency/.

Locations