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CTRI Number  CTRI/2026/03/105530 [Registered on: 06/03/2026] Trial Registered Prospectively
Last Modified On: 06/03/2026
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Other 
Public Title of Study   Occurrence and Risk Factors of Post-Radiotherapy Trismus in Oral Cavity Cancer Patients 
Scientific Title of Study   “A Prospective study to assess the occurrence and factors causing trismus in patients with oral Cavity cancers Post Radiotherapy 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Priya Bowjenku 
Designation  MD Radiotherapy junior resident (1st year) 
Affiliation  Sri Venkateshwara Institute of Medical Sciences 
Address  Department Of Radiation oncology Sri Venkateshwara Institute of Medical Sciences Alipri road Tirupati Chittoor ANDHRA PRADESH 517507 India
Department Of Radiation oncology Sri Venkateshwara Institute of Medical Sciences Alipri road Tirupati Chittoor ANDHRA PRADESH 517507 India
Chittoor
ANDHRA PRADESH
517507
India 
Phone  9866897542  
Fax    
Email  Priyasweetie.0105@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  DRBV SUBRAMANIAN 
Designation  MD Radiotherapy HOD Senior professor  
Affiliation  Sri Venkateshwara Institute of Medical Sciences 
Address  Department of Radiation oncology Sri Venkateshwara Institute of Medical Sciences Alipri road Tirupati Chittoor ANDHRA PRADESH 517507 India
Department of Radiation oncology Sri Venkateshwara Institute of Medical Sciences Alipri road Tirupati Chittoor ANDHRA PRADESH 517507
Chittoor
ANDHRA PRADESH
517501
India 
Phone  9849692950  
Fax    
Email  ravibalasubramanian@hotmail.com  
 
Details of Contact Person
Public Query
 
Name  Priya Bowjenku 
Designation  MD Radiotherapy junior resident (1st year) 
Affiliation  Sri Venkateshwara Institute of Medical Sciences 
Address  Department Of Radiation oncology Sri Venkateshwara Institute of Medical Sciences Alipri road Tirupati Chittoor ANDHRA PRADESH 517507 India
Department Of Radiation oncology Sri Venkateshwara Institute of Medical Sciences Alipri road Tirupati Chittoor ANDHRA PRADESH 517507 India
Chittoor
ANDHRA PRADESH
517507
India 
Phone  9866897542  
Fax    
Email  Priyasweetie.0105@gmail.com  
 
Source of Monetary or Material Support  
Department Of Radiation oncology Sri Venkateswara Institute of Medical Sciences Alipri road Tirupati 517507 Andhra pradesh India 
 
Primary Sponsor  
Name  Sri Venkateshwara Institute of Medical Sciences  
Address  Department Of Radiation oncology Sri Venkateswara Institute of Medical Sciences Alipri road Tirupati 517507 Andhra pradesh India 
Type of Sponsor  Other [self] 
 
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 Priya Bowjenku  Sri VenkatesHwara Institute of Medical Sciences  Department Of Radiation oncology Sri VenkatesHwara Institute of Medical Sciences Alipri road Tirupati 517507 Chittoor ANDHRA PRADESH
Chittoor
ANDHRA PRADESH 
9866897542

Priyasweetie.0105@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
insititute of medical ethic committe sri venkateshwara institute of medical science  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: C148||Malignant neoplasm of overlappingsites of lip, oral cavity and pharynx,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  1.Histo-pathologically proven squamous cell carcinoma [SCC] of oral and oropharyngeal cancers
2.Age : 18 -70 years .
3.Patients with eastern cooperative oncology group [ECOG] performance status of 0-2
4.Stage I to IV B SCC of oral cavity cancers [American joint committee on cancer : 8th edition
5. Patients treated with surgery
 
 
ExclusionCriteria 
Details 
1.Cancer with distant metastasis.
2.Patient with ECOG performance status of 3-4.
3.Patients previously treated with radiotherapy to head & neck region.
4.Pregnant and lactating mothers.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To assess occurrence of trismus in oral cavity   three months  
 
Secondary Outcome  
Outcome  TimePoints 
To assess contributing risk factors in development of trismus  three months 
 
Target Sample Size   Total Sample Size="50"
Sample Size from India="50" 
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)   18/03/2026 
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="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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 - YES
  1. What data in particular will be shared?
    Response (Others) -  NIL

  2. What additional supporting information will be shared?
    Response -  Study Protocol
    Response -  Statistical Analysis Plan
    Response (Others) -  NIL
  3. Who will be able to view these files?
    Response (Others) -  NIL

  4. For what types of analyses will this data be available?
    Response (Others) -  NIL

  5. By what mechanism will data be made available?
    Response (Others) -  NIL

  6. For how long will this data be available start date provided 25-03-2026 and end date provided 03-03-2027?
    Response (Others) -  NIL

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - NIL
Brief Summary  

This prospective, single-center observational cohort study conducted at SVIMS, Tirupati, aims to evaluate the occurrence of trismus in patients with oral cavity squamous cell carcinoma treated with radiotherapy, with or without concurrent chemotherapy. The study assesses clinical, tumor-related, and treatment-related factors contributing to post-radiotherapy trismus. Patients undergo detailed pretreatment evaluation, standardized radiotherapy planning using VMAT, and structured follow-up. Trismus is graded using CTCAE criteria, and statistical analysis is performed with SPSS to determine significant risk factors. Ethical approval, informed consent, and CTRI registration are ensured for regulatory compliance


 
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