A Study to Determine the Safety and Efficacy of TG-C in Subjects with Kellgren and Lawrence Grade 2 or 3 OA of the Knee

Kolon TissueGene

Status and phase: Active, not recruiting; Phase 3

Conditions: Degenerative Osteoarthritis

Treatments: Biological: TG-C; Biological: Placebo Control

Study type: Interventional

Funder types: Industry

Identifiers

NCT03203330

TGC-12301

Details and patient eligibility

About

A randomized, double-blind, placebo-controlled, multi-center, phase 3 study to determine the safety and efficacy of TG-C in subjects with Kellgren and Lawrence Grade 2 or 3 Osteoarthritis of the Knee, Osteoarthritis Research Society International (OARSI) medial joint space narrowing (JSN) Grade 1 or 2 of the knee joint. TG-C is to be administered by a single intra-articular injection to the damaged joint area via ultrasound guidance. Patients will be followed for 24 months for safety and efficacy.

Full description

This protocol is designed to assess the safety and efficacy of TG-C in treating symptoms of osteoarthritis of the knee and determining disease modifying effects of TG-C. This study is intended for the treatment of patients with KL Grade 2 and 3 osteoarthritis and OARSI JSN Grade 1 and 2. Assessments will be made on both the symptomatic effects of pain (VAS), function (WOMAC), and Quality of Life (SF-12) as well as the physical effects (JSW, MRI evaluations of whole knee joint organ tissues and structure) and biochemical biomarkers. This is a placebo-controlled study, TG-C will be compared to normal saline as a control. Additionally, this protocol is designed to evaluate the safety of TG-C. Safety will be evaluated by observation of the injection site for irritation or other effects, the incidence and severity of adverse events, and changes in physical examination findings, radiographic criteria, and laboratory tests. Patients will be followed for 24 months for both safety and efficacy with annual cancer surveillance questionnaires through 15 years post dosing for subjects who do not enroll in the Long Term Safety study.

Enrollment: 535 patients

Sex: All

Ages: 40+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Aged 40 or older
• BMI between 18.5 and 40
• KL Grade 2 or 3 knee OA
• OARSI Grade 1 or 2 medial JSN
• Pain >= 40 on VAS scale
• Written informed consent
• Using birth control

Exclusion criteria

• Knee symptoms that result in difficulty or inability to walk
• Knee effusion >2+
• Has Grade 3 OARSI JSN
• Has a score of 0 or >=5 on the cartilage feature of the WORMS at Screening
• MRI exam indicates fracture or tumor
• Has a positive result on RCR testing at Screening
• Has taken NSAIDS with 14 days of baseline
• Has taken steroidal anti-inflammatory medication within 2 months of baseline
• Chronic (>21 days) narcotic use
• Recent history (within 1 year) of drug or alcohol abuse
• Pregnant or lactating
• Has received injection to target knee within 2 months prior to study entry
• History of various disorders of the knee including but not limited to rheumatoid arthritis, psoriatic arthritis, autoimmune OA, chondrocalcinosis, gout, hemochromatosis, villonodular synovitis, or synovial chondromatosis
• Severe hip osteoarthritis ipsilateral to the target knee
• Ongoing infection disease including but not limited to HIV, Hepatitis B or C.
• Clinically significant congestive heart failure hepatic disease, kidney disease, adrenal insufficiency, acromegaly, uncontrolled hyper- or hypothyroidism, or non-specified uncontrolled endocrine disorder
• Uncontrolled diabetes based on a HbA1c > 8% at screening

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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535 participants in 2 patient groups, including a placebo group

Active Treatment (TG-C)

Active Comparator group

Description:

TG-C at 3 x 10e7 cells per single 2 mL intraarticular injection

Treatment:

Biological: TG-C

Placebo Control (Normal Saline)

Placebo Comparator group

Description:

Normal saline, single 2 mL intraarticular injection

Treatment:

Biological: Placebo Control