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CTRI Number  CTRI/2025/09/094960 [Registered on: 17/09/2025] Trial Registered Prospectively
Last Modified On: 16/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Case Control Study 
Study Design  Other 
Public Title of Study   Genetic Polymorphism and Methotrexate Toxicities 
Scientific Title of Study   A Prospective Observational Study to Determine the Association of Genetic Polymorphisms with Serum Methotrexate Levels in Cancer Patients with Methotrexate Related Toxicities 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Siddhartha Krishna Deka 
Designation  DM Resident 
Affiliation  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences 
Address  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, India

Hyderabad
TELANGANA
500082
India 
Phone  9435400798  
Fax    
Email  sidd38.skd@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr C Prabhakar Reddy 
Designation  Professor 
Affiliation  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences 
Address  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, India

Hyderabad
TELANGANA
500082
India 
Phone  7416512888  
Fax    
Email  cptnims@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr C Prabhakar Reddy 
Designation  Professor 
Affiliation  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences 
Address  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, India

Hyderabad
TELANGANA
500082
India 
Phone  7416512888  
Fax    
Email  cptnims@gmail.com  
 
Source of Monetary or Material Support  
Nizams Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, PIN- 500082, India 
 
Primary Sponsor  
Name  Siddhartha Krishna Deka 
Address  Department of Clinical Pharmacology and Therapeutics, Nizams Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, PIN- 500082, India 
Type of Sponsor  Other [Self Sponsored] 
 
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 Siddhartha Krishna Deka  Nizams Institute of Medical Sciences, Hyderabad  Department of Clinical Pharmacology & Therapeutics and Department of Medical Oncology, Nizam’s Institute of Medical Sciences, Hyderabad
Hyderabad
TELANGANA 
9435400798

sidd38.skd@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
NIMS Institutional Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: D499||Neoplasm of unspecified behavior of unspecified site,  
 
Intervention / Comparator Agent  
Type  Name  Details 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1. Patients with various cancers undergoing MTX chemotherapy, receiving Methotrexate at a dose of more than 500 mg
2. Age: Above 18 years and less than 65 years
3. Gender: Male and Female
4. Those who are willing to give written informed consent.
 
 
ExclusionCriteria 
Details  1. Pregnancy and lactation.
2. History of a drug reaction or allergy to Methotrexate.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
1. Proportion of patients with C677T and A1298C MTHFR Genetic polymorphism in cases of Methotrexate toxicity as well as in controls (Grade 0).
2. Correlation of C677T and A1298C MTHFR Genetic Polymorphism with Serum Levels of Methotrexate.
 
24, 48, and 72 hours 
 
Secondary Outcome  
Outcome  TimePoints 
The correlation between genetic polymorphism and hematologic and non-hematologic toxicities.   24, 48, and 72 hours 
 
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)   01/10/2025 
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  

Methotrexate (MTX) is frequently used to treat several illnesses, including inflammatory bowel disease, rheumatoid arthritis, psoriasis, cancer, acute lymphoblastic leukaemia or lymphoma, and hematopoietic cell transplantation. Methotrexate has been shown to inhibit Methylene tetrahydrofolate reductase (MTHFR). The intestinal epithelium and bone marrow are the main targets of MTX toxicity. Elevation of transaminases could indicate hepatic toxicity, increasing the risk of cirrhosis. MTX can also cause alopecia, dermatitis, allergic interstitial pneumonitis, neurologic symptoms, changes in bone metabolism, hyperhomocysteinemia, nephrotoxicity (after high-dose treatment), abortion, teratogenesis, impaired oogenesis or spermatogenesis. Two genetic variations can lower MTHFR’s enzyme function, namely, rs1801133 (C677T) and rs1801131 (A1298C).

Therefore, this study is being planned in the South Indian Population to determine the serum concentrations of Methotrexate and the genetic polymorphisms associated with it, in oncology patients receiving Methotrexate chemotherapy and presenting with toxicity.

The study aims to investigate the influence of genetic polymorphisms on serum concentrations of Methotrexate, methotrexate induced toxicities in cancer patients receiving Methotrexate chemotherapy.

 
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