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CTRI Number  CTRI/2025/07/090747 [Registered on: 11/07/2025] Trial Registered Prospectively
Last Modified On: 09/07/2025
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Other 
Public Title of Study   An observational single-centre study to find out does regular monitoring of a specialised blood test ( serum Ca 19.9 measurement) helps in the early detection of recurrence of gallbladder cancer after surgery. 
Scientific Title of Study   The Role of Serial Serum Carbohydrate Antigen 19-9 Surveillance to Detect Recurrences after Radical Curative Resection for Gallbladder Carcinoma 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
Project no 4832 V 1.0_4 May 2025  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Shraddha Patkar 
Designation  Professor and Hepato-Billiary Surgon 
Affiliation  Tata Memorial Hospital, Mumbai 
Address  Room no 324, Gastro-Intestinal Disease Managemnt Group, 3rd Floor, Homi Bhabha Building, Dr E Borges Road

Mumbai
MAHARASHTRA
400012
India 
Phone  9820074818  
Fax    
Email  drshraddhapatkar@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Shraddha Patkar 
Designation  Professor and Hepato-Billiary Surgon 
Affiliation  Tata Memorial Hospital, Mumbai 
Address  Room no 324, Gastro-Intestinal Disease Managemnt Group, 3rd Floor, Homi Bhabha Building, Dr E Borges Road


MAHARASHTRA
400012
India 
Phone  9820074818  
Fax    
Email  drshraddhapatkar@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Shraddha Patkar 
Designation  Professor and Hepato-Billiary Surgon 
Affiliation  Tata Memorial Hospital, Mumbai 
Address  Room no 324, Gastro-Intestinal Disease Managemnt Group, 3rd Floor, Homi Bhabha Building, Dr E Borges Road


MAHARASHTRA
400012
India 
Phone  9820074818  
Fax    
Email  drshraddhapatkar@gmail.com  
 
Source of Monetary or Material Support  
Tata Memorial Hospital, Dr E borges Road, Parel, Mumbai, Maharashtra, India-400012 
 
Primary Sponsor  
Name  Tata Memorial Hospital 
Address  Dr E Borges Road, Parel, Mumbai, Maharashtra, India 400012 
Type of Sponsor  Research institution and hospital 
 
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 Shraddha Patkar  Tata Memorial Hospital, Mumbai  OPD no 324, Gastro-Intestinal Disease Management Group, 3rd Floor, Homi Bhabha Building, Dr E Borges Road, Parel
Mumbai
MAHARASHTRA 
9820074818

drshraddhapatkar@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Tata Memorial Hospital Institutional Ethics Committee-II  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: C23||Malignant neoplasm of gallbladder,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  99.00 Year(s)
Gender  Both 
Details  1. Consecutive adult patients more than 18 years of both sexes with Gallbladder carcinoma who underwent curative radical resection
2. Date of surgery between 01 Jan 2010 to 31Jan2024
 
 
ExclusionCriteria 
Details  1. Date of surgery outside the study period
2. Patients with non-malignant pathology, non-adenocarcinoma histology, metastatic disease, non-radical surgery, and R plus resections.
3.CA 19-9 non-secretors (undetectable serum CA 19-9 levels less than 2 U per ml)
Patients who have no post-operative CA 19-9 values available
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
The sensitivity, and specificity for the first raised postoperative CA 19-9 level, the serial rise in serum CA 19-9, and the relative rise and absolute cut-off value of serum CA 19-9 for the diagnosis of recurrence  6 months 
 
Secondary Outcome  
Outcome  TimePoints 
The positive predictive value, and negative predictive value for the first raised postoperative CA 19-9 level, the serial rise in serum CA 19-9, and the relative rise and absolute cut-off value of serum CA 19-9 for the diagnosis of recurrence.  6 months 
 
Target Sample Size   Total Sample Size="813"
Sample Size from India="813" 
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)   28/07/2025 
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  

Gallbladder carcinoma (GBC) is the most common type of biliary tract cancer associated with poor outcome, especially when detected at an advanced stage. Owing to their aggressive behavior, even after surgery meant to completely remove the tumor and additional treatments like chemotherapy or radiation, this cancer often comes back. Timely detection of cancer recurrence is important because it allows consideration of second-line treatment, which can help control the disease, relieve symptoms, and possibly extend survival compared to only providing comfort care. Regular check-ups and follow-ups are key to early detection of recurrence. One possible tool for detecting recurrence is a blood test that measures carbohydrate antigen 19-9 (CA 19-9) – a substance that can be higher in people with gall bladder or pancreatic cancer. Although this test is widely used for surveillance in pancreatic cancer, its role in GBC surveillance is not yet well established. The present study looks at whether serial monitoring of serum CA 19-9 helps early detection of recurrence in GBC who underwent curative radical resection.


 
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