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CTRI Number  CTRI/2025/08/093408 [Registered on: 21/08/2025] Trial Registered Prospectively
Last Modified On: 20/08/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Study on Participants with Mild to Moderate Knee Osteoarthritis to Assess the Outcome of Adding Metformin (1000 mg/day) as an Intervention Alongside Standard Treatment" 
Scientific Title of Study   Efficacy and Safety of Metformin (1000 mg/d) as Adjuvant to Standard of Care (SOC) in Management of Mild to Moderate Osteoarthritis (OA) of Knee: A Prospective, Randomized, Comparative Study 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
DYP/IECBH/2025/175; Version 1.0, dt. 01-07-2025  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Sachin Kale 
Designation  Professor 
Affiliation  DY Patil deemed to be University School of Medicine, Navi Mumbai 
Address  Orthopaedics department 3rd floor OPD no.22 ,D.Y. Patil Hospital, deemed to be University , Navi Mumbai.

Thane
MAHARASHTRA
400706
India 
Phone  9821431687  
Fax    
Email  sachin.kale@dypatil.edu  
 
Details of Contact Person
Scientific Query
 
Name  Dr Adwait Malik 
Designation  Junior Resident 1 
Affiliation  DY Patil deemed to be University School of Medicine, Navi Mumbai 
Address  Department of pharmacology ,5 th floor,D.Y. Patil deemed to be University School of Medicine, Navi Mumbai.

Thane
MAHARASHTRA
400706
India 
Phone  9082895271  
Fax    
Email  adwait.malik.01@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Adwait Malik 
Designation  Junior Resident 1 
Affiliation  DY Patil deemed to be University School of Medicine, Navi Mumbai 
Address  Department of pharmacology ,5 th floor,D.Y. Patil deemed to be University School of Medicine, Navi Mumbai.

Thane
MAHARASHTRA
400706
India 
Phone  9082895271  
Fax    
Email  adwait.malik.01@gmail.com  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  D.Y. PATIL Deemed to be University School of Medicine, Navi Mumbai 
Address  Department of Pharmacology, 5th floor, plot No 2, Sector-5, Nerul, Navi Mumbai- 400706 
Type of Sponsor  Private medical college 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Sachin Kale   D.Y. Patil Hospital, Nerul, Navi Mumbai. 400706  Orthopaedics department 3rd floor, room no. 301, OPD number 22 .
Thane
MAHARASHTRA 
9821431687

sachin.kale@dypatil.edu 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee (IEC) for Biomedical and Health Research   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: M179||Osteoarthritis of knee, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  METFORMIN DRUG   Oral Metformin (500 mg) twice daily after meals (breakfast and dinner)for a total duration of 4 weeks. 
Comparator Agent  placebo tablets 500 mg tablets  Placebo calcium tablets 500 mg BD for a total duration of 4 weeks. 
 
Inclusion Criteria  
Age From  30.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  1. Male and female patients aged between 30 to 70 years.
2. Clinically diagnosed and radiologically confirmed mild to moderate (Kellgren Lawrence grade II and III) symptomatic cases of Osteoarthritis of the knee joints.
3. Onset of symptom duration greater than or equal to 6 months at the time of screening.
4. Greater than or equal to 5 score on a 10-point visual analogue scale (VAS) for pain at baseline.
5. Willing to give consent for participating in the study.

 
 
ExclusionCriteria 
Details  1. Patients having severe (Kellgren lawrence grade IV)/ disabling arthritis in the targeted or contralateral knee joint.
2. Patients with radiologically abnormal knee alignment.
3. Those who are suffering from skin-related problems at the local sites of drug application, which may be affected the drug application.
4. Patients with a history of Chikungunya, Dengue, or other viral infections in the past six months.
5. Participants with a history or presence of Type 1 and Type 2 diabetes.
6. Those who are on treatment with immunosuppressive drugs and biologicals
7. Participants who are taking any other oral hypoglycaemic drugs.
8.Participants who are taking metformin for any other indication.
9. Participants who are prone to gastrointestinal symptoms like nausea, vomiting, diarrhea, and flatulence Vitamin B12 deficiency.
10. Pregnant and lactating women
11. Any condition which, in the opinion of investigator, will place the subject at risk or will influence the conduct of study or interpretation of results
12. Diagnosed cases of Rheumatoid arthritis (RA factor positive) and Gouty arthritis (Serum Uric acid greater than UNL)
13. Patient requiring any systemic analgesic for other conditions that can affect the outcome of the study drug
14.Patient on systemic corticosteroid therapy
15. Known case of history of allergy with NSAIDs or test drug.
16.Patients with BMI greater than or equal to 40 kg/m2.
17. Participants who have enrolled in any other trial in the past 6 months.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
Change in pain severity from baseline, measured using the pain subscale of the Oxford Knee Score (OKS), in participants with mild to moderate knee osteoarthritis receiving the intervention.  Pain assessment using OKS at Week 1, Week 2, Week 3, and Week 4 following initiation of intervention. 
 
Secondary Outcome  
Outcome  TimePoints 
Change in range of motion (ROM) of the affected knee joint from baseline, measured using goniometry.
Change in pain intensity from baseline, assessed using the 10-point Visual Analogue Scale (VAS).
Change in Knee Injury & Osteoarthritis Outcome Score (KOOS) from baseline, reflecting improvements in pain, symptoms, function, & quality of life.
Frequency & quantity of rescue analgesic use, indicating additional pain management needs.
Incidence of adverse events (AEs), treatment-emergent adverse events (TEAEs), & serious adverse events (SAEs) during the study period. 
Week 1, Week 2, Week 3, & Week 4 post-initiation of intervention for all secondary outcomes listed above. 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   01/09/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

 Protocol

  For continuous variables number of non-missing observations (n), mean, standard deviation (SD), median, maximum, and minimum (range) will be presented.

For discrete and categorical variables, data will be expressed as numbers with percent values.

All analyses will be done using two-sided tests at alpha 0.05 (95% confidence level).

 Study hypothesis:

H0:         There is no significant difference in the change in OKS scores between the study treatment (Metformin) and the reference (No metformin) treatment.

H1:         The change (improvement) in OKS scores is greater with the study treatment (Metformin) and reference (No metformin) treatment.


 
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