Efficacy and Safety of Chondron (Autologus Chondrocyte) in Patients With Cartilage Defects in Their Ankle

A Phase III Clinical Trial to Evaluate the Efficacy and Safety of Chondron (Autologus Chondrocyte) in Patients With Cartilage Defects in Their Ankle for 18 Months

The objective of this study is to evaluate the efficacy and safety of Chondron (Autologus Chondrocyte) in patients with cartilage defects in their ankle for 18 months

Study Overview

• Status: Terminated
• Conditions: Defect of Articular Cartilage; Degenerative Joint Disease of Ankle and/or Foot; Ankle (Ligaments); Instability, Familial
• Intervention / Treatment: Drug: CHONDRON

Detailed Description

This is an open label trial, involving a total of 28 subjects. Subjects who give consent will be screened and those who meet trial criteria will receive CHONDRON (Autologous cultured Chondrocyte) by transplant. During the trial period, subjects must follow the instructions given by principal investigator. Subjects will make 6* hospital visits on a regular basis inclusive of hospitalization. During these visits subjects will be examined. For the evaluation of safety and efficacy of CHONDRON, examination with doctors, x-ray, MRI tests and arthroscopy will be performed. *If tissue samples can be collected at screening visit, there will be only 5 visits.

• Study Type: Interventional
• Enrollment (Actual): 28
• Phase: Phase 3

Contacts and Locations

Study Locations

• South Korea
  • Gyeonggi-do
    • Goyang-si, Gyeonggi-do, South Korea
      • Myongji Hospital
  • Seoul
    • Seoul, Seoul, South Korea
      • Eulji General Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 15 years to 65 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Male or female subjects aged 15 to 65 years
• Patients with MRI-confirmed partial cartilage defects of the ankle (≤15 cm² single lesion, ≤20 cm² multiple lesions)
• Patients who have undergone correction for malalignment, ligament instability, or bone defects (if applicable)
• Patients with normal surrounding cartilage
• Patients with ICRS Grade III or IV cartilage defects
• Subjects who provide written informed consent

Exclusion Criteria:

• Hypersensitivity to bovine protein or gentamicin
• Inflammatory or autoimmune arthritis (e.g., rheumatoid arthritis, gout)
• Pregnant, breastfeeding, or planning pregnancy
• Tumors or serious comorbid conditions
• History of radiotherapy or chemotherapy within 2 years
• Uncontrolled diabetes or diabetes with complications
• Active infection requiring antibiotics
• Current corticosteroid therapy
• Patients with mental illness or other conditions deemed unsuitable for this study by the clinical trial manager

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Autologous cultured Chondrocyte; Subjects who give consent will be screened and those who meet trial criteria will receive CHONDRON (Autologous cultured Chondrocyte) by transplant.	Drug: CHONDRON; Harvesting of ankle or knee cartilage; The cells that fill the vial are sufficiently suspended, and a sufficient amount of suspension is grafted in the defect with fibrin glue.; Other Names: Autologous cultured Chondrocyte

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Grade change of ICRS(International Cartilage Repair Society) by arthroscopy	The change of ICRS grade of the affected ankle shall be assessed at 12 months after the surgery. The results on the surgery date shall be considered the baseline data and shall be compared with those at 12 months after the surgery based on arthroscopy. For the final efficacy evaluation, the percentage of the patients (success rate) who showed Grade III or IV ICRS before the surgery and improved to Grade 0 or I after the surgery will be calculated.	12 months after the surgery

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Score change of AOFAS(American orthopedic foot & ankle society) Score	The improvements in the AOFAS in the affected ankle at baseline and six, 12 and 18 months after the surgery will be compared. The final efficacy evaluation shall be done by calculating the difference between the AOFAS at the baseline and that 18 months after the surgery.	baseline and six, 12 and 18 months after the surgery
Hannover Score	The improvements in the Hannover score in the affected ankle at baseline and six, 12 and 18 months after the surgery will be compared. The final efficacy evaluation shall be done by calculating the difference between the Hannover score at the baseline and that 18 months after the surgery.	baseline and six, 12 and 18 months after the surgery
Score change of Evaluation by physician in charge	The improvement will be evaluated by the physician using a five-level scale six, 12 and 18 months after the Chondron grafting.	six, 12 and 18 months after the surgery
Score change of 100mmVAS(visual analogue scale)	The improvements of pain in the 100mmVAS in the affected ankle at baseline and six, 12 and 18 months after the surgery will be compared. The final efficacy evaluation shall be done by calculating the difference between the 100mmVAS at the baseline and that 18 months after the surgery.	baseline and six, 12 and 18 months after the surgery
Comparing MRI results	The morphological improvement from MRI image of the affected ankle will be assessed at 18 months after the surgery from those at baseline. For MRI image at baseline, the MRI should be performed within two weeks from the Chondron grafting for the efficacy evaluation.	baseline and 18 months after the surgery

Collaborators and Investigators

• Sponsor: Cellontech Co., Ltd.
• Investigators: Principal Investigator: Jin Su Kim, MD, Eulji General Hospital; Principal Investigator: Ki Hyuck Sung, MD, Myongji Hospital

Study record dates

Study Major Dates

• Study Start: January 1, 2010
• Primary Completion (Actual): May 1, 2015
• Study Completion (Actual): November 1, 2015

Study Registration Dates

• First Submitted: August 13, 2015
• First Submitted That Met QC Criteria: August 28, 2015
• First Posted (Estimated): September 1, 2015

Study Record Updates

• Last Update Posted (Actual): April 8, 2026
• Last Update Submitted That Met QC Criteria: April 2, 2026
• Last Verified: November 1, 2016

More Information

Terms related to this study

• Keywords: Chondron; a partial cartilage defect of ankle; Autologus Chondrocyte
• Additional Relevant MeSH Terms: Musculoskeletal Diseases; Rheumatic Diseases; Arthritis; Osteoarthritis; Joint Diseases
• Other Study ID Numbers: 04CON