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CTRI Number  CTRI/2025/09/094270 [Registered on: 04/09/2025] Trial Registered Prospectively
Last Modified On: 04/09/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Radiation Therapy 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A study to find out if radiotherapy alone or radiotherapy with chemotherapy works better after surgery in people with advanced oral cancers  
Scientific Title of Study   A Phase III Randomized Controlled Trial of Adjuvant RT Alone Versus Concurrent Chemoradiotherapy After Neoadjuvant Treatment in Borderline Resectable Oral Cavity Cancers (RAdiAN) 
Trial Acronym  RAdiAN 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Anuj Kumar S  
Designation  Associate Professor  
Affiliation  ACTREC, Tata Memorial Centre  
Address  Dept of Radiation Oncology, ACTREC, Sector 22,Kharghar, Navi Mumbai

Raigarh
MAHARASHTRA
410210
India 
Phone  9946416480  
Fax    
Email  akumars@actrec.gov.in  
 
Details of Contact Person
Scientific Query
 
Name  Anuj Kumar S  
Designation  Associate Professor  
Affiliation  ACTREC, Tata Memorial Centre  
Address  Dept of Radiation Oncology, ACTREC, Sector 22,Kharghar, Navi Mumbai

Raigarh
MAHARASHTRA
410210
India 
Phone  9946416480  
Fax    
Email  akumars@actrec.gov.in  
 
Details of Contact Person
Public Query
 
Name  Anuj Kumar S  
Designation  Associate Professor  
Affiliation  ACTREC, Tata Memorial Centre  
Address  Dept of Radiation Oncology, ACTREC, Sector 22,Kharghar, Navi Mumbai

Raigarh
MAHARASHTRA
410210
India 
Phone  9946416480  
Fax    
Email  akumars@actrec.gov.in  
 
Source of Monetary or Material Support  
Tata Memorial Centre, Dr. E. Borges Road, Parel Mumbai 400012 Maharashtra India 
 
Primary Sponsor  
Name  Tata Memorial Centre  
Address  Dr E Borges Road, Parel, Mumbai-400012,India  
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
Sun Pharma Science Foundation  8C, 8th Floor, Hansalaya Building, 15-Barakhamba Road, Connaught Place, New Delhi 110001 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Anuj Kumar S   ACTREC, Tata Memorial Hospital  Room No: 23, Dept of Radiation Oncology, Proton Therapy Centre, ACTREC, Sector 22, Kharghar, Navi Mumbai-410210
Raigarh
MAHARASHTRA 
9946416480

akumars@actrec.gov.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee-III, Tata Memorial Centre  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition:C00-C14||Malignant neoplasms of lip, oral cavity and pharynx. Ayurveda Condition: NO,  
 
Intervention / Comparator Agent  
snoIntervention/ComparatorTypeDrug-TypeProcedure NameDetails
1Comparator Arm (Non Ayurveda)-Adjuvant RT with concurrent chemotherapy60 to 64 Gy/30 to 32 # over 6 to 7 weeks with concurrent chemotherapy as per physicians choice
2Intervention ArmProcedure-Adjuvant RT alone (Procedure Reference: Established literature, Procedure details: 60 to 64 Gy/ 30 to 32 # over 6 to 7 weeks)
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  1. Age between 18 and 70 years
2. Karnofsky Performance Score (KPS) not less than 70
3. Biopsy-proven borderline resectable oral squamous cell carcinoma (OSCC)
4. Baseline imaging available
5. Received two or more cycles of neoadjuvant systemic therapy followed by surgery
6. Complete histopathology details available, including:
-Tumour size
-Grade
-Margin status
-Depth of invasion
-Perineural invasion
-Nodal involvement
-Extranodal extension
-Pathological response to neoadjuvant therapy
7. Fit for concurrent chemotherapy defined by the following thresholds:
-Hematological: Absolute neutrophil count (ANC) not less than 1000/µL; Platelet count not less than 100,000/µL
-Renal: Creatinine clearance not less than 60 mL/min OR serum creatinine not more than 1.5 mg/dL
-Hepatic: AST and ALT not more than 2.5 times the upper limit of normal; Total bilirubin not more than 1.5 times the upper limit of normal
8. No active uncontrolled infections or severe comorbidities 
 
ExclusionCriteria 
Details  1. Positive margins or extranodal extension (ENE) on histopathology, or ENE detected on baseline imaging
2. Recurrent or second primary cancers
3. Prior radiotherapy or chemoradiotherapy
4. Incomplete HPR information
5. Presence of distant metastasis
6. Unresolved grade III or IV toxicities related to neoadjuvant systemic therapy at the time of randomization 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Centralized 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
To determine whether adjuvant RT alone is non-inferior to adjuvant CTRT in achieving 3-year DFS in patients with borderline resectable oral cancers treated with neoadjuvant systemic therapy and surgery.  -Baseline: Post-surgery, before starting adjuvant therapy
-End of RT/CTRT: At 6–7 weeks (completion of adjuvant treatment)
-Follow-up (Year 1-2): Every 3 months
-Follow-up (Beyond 2 years): Every 6 months till final 3 year DFS assessment 
 
Secondary Outcome  
Outcome  TimePoints 
-To compare 3-year overall survival (OS), locoregional recurrence-free survival (LRRFS), and distant metastasis-free survival (DMFS) between the two arms.
-To assess acute and late toxicities.
-To measure quality of life outcomes using the EORTC QLQ-C30, EORTC QLQ-H&N43, and EQ-5D-5L questionnaires.
-To assess response to neoadjuvant treatment using molecular biomarkers such as gamma-H2AX, apoptosis markers, and cell cycle analysis.
-To correlate molecular markers of response with long-term clinical outcomes.
-To evaluate response to neoadjuvant chemotherapy using imaging biomarkers derived from radiomics and machine learning models.
-To analyse baseline and interim imaging to assess treatment response and correlate with long-term outcomes across both study arms.
-To compare radiation-induced toxicity between the adjuvant radiotherapy alone arm and the adjuvant chemoradiotherapy arm using gamma-H2AX assays. 
-Primary endpoint (disease-free survival): assessed at 3 years from randomization
-Overall survival, locoregional control, and distant metastasis-free survival: assessed at 3 and 5 years
-Toxicity: monitored weekly during treatment and at each follow-up visit (every 3 months for 2 years, then every 6 months up to 5 years)
-Quality of life: assessed at baseline, end of radiotherapy, and at follow-up visits
-Biomarker studies: after neoadjuvant therapy, before radiotherapy, and within 48 hours after completion of radiotherapy
-Imaging: baseline, post-neoadjuvant therapy, and annually during follow-up 
 
Target Sample Size   Total Sample Size="376"
Sample Size from India="376" 
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   Phase 3 
Date of First Enrollment (India)   15/09/2025 
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="5"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Open to Recruitment 
Recruitment Status of Trial (India)  Open to Recruitment 
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   This is a Phase III randomized controlled trial designed to evaluate whether adjuvant radiotherapy alone is non-inferior to adjuvant chemoradiotherapy in patients with borderline resectable oral cavity squamous cell carcinoma who have received neoadjuvant systemic therapy followed by surgery. Eligible patients will be randomized within eight weeks of surgery to receive either adjuvant radiotherapy alone (60–64 Gy in 30–32 fractions) or adjuvant radiotherapy with concurrent chemotherapy. The primary endpoint is three-year disease-free survival. Secondary endpoints include overall survival, locoregional recurrence-free survival, distant metastasis-free survival, acute and late toxicities, and quality of life outcomes assessed using validated questionnaires. Translational research will be conducted to evaluate molecular biomarkers and imaging correlates of treatment response and toxicity. A total of 376 patients will be enrolled across Tata Memorial Hospital and ACTREC, Mumbai. The study aims to refine postoperative treatment strategies, reduce unnecessary chemotherapy, and improve quality of life without compromising survival outcomes. 
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