Study to Evaluate Resiniferatoxin in Patients With Knee Osteoarthritis Whose Total Knee Replacement Surgery is Delayed

November 2, 2021 updated by: Sorrento Therapeutics, Inc.

A Phase 3, Randomized, Multi-center, Blinded, Placebo-controlled Study to Evaluate the Efficacy and Safety of Intra-articular Resiniferatoxin Versus Placebo to Manage Pain in Patients With Osteoarthritis of the Knee Whose Total Knee Replacement Surgery is Delayed

Efficacy and safety study of resiniferatoxin versus placebo to manage pain in patients with knee osteoarthritis whose TKR surgery is delayed

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Withdrawn

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study evaluates the efficacy and safety of intra-articular resiniferatoxin (RTX) versus placebo to manage pain in patients with osteoarthritis of the knee whose Total Knee Replacement surgery is delayed.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Able to give informed consent and comply with the study
  • Diagnosis of osteoarthritis (OA) in the index knee
  • Combined WOMAC A (pain) and C (function) subscale score of ≥ 23 at screening, using the WOMAC 5-point Likert scale
  • Eligible for total knee replacement (TKR) surgery but unable to schedule surgery or undergo scheduled surgery
  • In good general health; American Society of Anesthesiologists (ASA) physical status category ≤3
  • Willing to use contraception for at least 30 days after receiving the study drug
  • Able to understand and complete study-related forms and adequately communicate with the Investigator and site staff

Exclusion Criteria:

  • Pre-existing osteonecrosis, subchondral insufficiency fracture, or knee pain attributable to disease other than OA which may confound the ability to assess response to treatment
  • Concurrent medical or arthritic conditions that could interfere with evaluation of the index knee joint including, metabolic diseases, gout/pseudogout, hemochromatosis, acromegaly, fibromyalgia, rheumatoid arthritis, or other inflammatory arthropathies affecting the knee joint
  • Participants with significant pain in the back or other joints (ex. hip pain) which may confound discrimination of pain assessment in index knee, as judged by the Investigator
  • Undergone arthroscopic surgery of the index knee within 6 months of study drug administration, or open surgery to the index knee within 24 months of study drug administration
  • Undergone replacement surgery of the index knee
  • Presence of surgical hardware or other foreign bodies in the index knee
  • Index knee injections with corticosteroids within 30 days, or hyaluronic acid within 3 months, or platelet-rich plasma within 6 months prior to study drug administration.
  • Concurrent use of opioids for indications other than knee pain
  • Arterial or venous thrombi (including stroke), myocardial infarction, hospital admission for unstable angina, cardiac angioplasty, or stenting within 12 months prior to Screening.
  • Sensory peripheral neuropathy in the distal aspect of the target limb that is of moderate severity or higher at Screening
  • Known human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome-related illness, acute or history of chronic hepatitis B or hepatitis C; positive tests for HIV-1 or -2 antibodies, hepatitis B surface antigen, or hepatitis C antibodies
  • Specified laboratory abnormalities within 1 week of study drug administration
  • History within the past 2 years of substance abuse, including alcohol
  • Allergy or hypersensitivity to chili peppers, capsaicin, resiniferatoxin, acetaminophen, tramadol, radiographic contrast agents, or any of the agents to be used for sedation, anesthesia or nerve block on the day of study drug administration
  • Female participants who are pregnant, planning on becoming pregnant within 30 days of receiving study drug, or are breastfeeding at Screening
  • Any medical condition or medical comorbidities that, in the Investigator's opinion, could adversely impact study participation or safety, conduct of the study, or interfere with pain assessments
  • Participated in a clinical study of an investigational drug within 4 half-lives of Screening or are scheduled to receive an investigational agent (therapy or device) while participating in this study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Resiniferatoxin
12.5 ug of Resiniferatoxin in 5 mL volume administered once intra-articularly
Drug: Resiniferatoxin
Resiniferatoxin is a compound purified from natural sources.
Other Names:
  • RTX
Placebo Comparator: Placebo
5 mL of diluent in normal saline administered once intra-articularly
Drug: Placebo
Diluent in normal saline

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change in WOMAC pain and function subscales combined score
Time Frame: Baseline to Week 12
Change in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) 3.1 numerical rating scale (NRS) [0-10 scale] Pain and Function combined score. The combined score ranges from 0 to 220; a higher score indicates greater severity of disease.
Baseline to Week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Safety of RTX: Incidence and severity of adverse events
Time Frame: Baseline through Week 12
Incidence and severity of adverse events
Baseline through Week 12
Change in analgesic usage
Time Frame: Baseline to Week 4, Week 8, Week 12
Change in analgesic medication usage as reported by subjects
Baseline to Week 4, Week 8, Week 12
Change in WOMAC pain and function subscales combined score
Time Frame: Baseline to Week 4, Week 8
Change in the WOMAC 3.1 NRS [0-10 scale] Pain and Function combined score. The combined score ranges from 0 to 220; a higher score indicates greater severity of disease.
Baseline to Week 4, Week 8
Patient Global Impression of Change (PGIC) in index knee pain
Time Frame: Baseline to Week 4, Week 8, Week 12
Rating of change in index knee pain using the 7-point PGIC scale where 1 = very much improved and 7 = very much worsened.
Baseline to Week 4, Week 8, Week 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sorrento Therapeutics, Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Monica Luchi, MD, Sorrento Therapeutics, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2021

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2022

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 8, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 12, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 13, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 9, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 2, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • STI-RTX-3004

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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