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CTRI Number  CTRI/2025/03/082924 [Registered on: 20/03/2025] Trial Registered Prospectively
Last Modified On: 17/03/2026
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   To evaluate the efficiency and safety of the test drug in patients having moderate to severe ulcerative colitis  
Scientific Title of Study   A phase III, multicenter, double-blind, placebo-controlled study to assess the efficacy and safety of induction therapy with RO7790121 in patients with moderately to severely active ulcerative colitis 
Trial Acronym  Ametrine 2 
Secondary IDs if Any
Modification(s)  
Secondary ID  Identifier 
GA45330_V4.0_26Nov2025   Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Mukesh Kalla 
Designation  Principal Investigator 
Affiliation  SR Kalla Memorial Gastro & General Hospital, Jaipur 
Address  SR Kalla Memorial Gastro & General Hospital, Jaipur 78-79 Dhuleshwar garden, Sardar Patel Marg, C Scheme, Jaipur, Rajasthan 302006 India

Jaipur
RAJASTHAN
302006
India 
Phone  9829050622  
Fax    
Email  drmkalla@rediffmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Viraj Suvarna 
Designation  Chief Medical Officer 
Affiliation  Roche Products (India) Pvt. Ltd. 
Address  Roche Products (India) Pvt. Ltd. 146-B, 166 A, Unit No. 7, 8, 9 8th Floor, R City Office, R City Mall, Lal Bahadur Shastri Marg, Ghatkopar, Mumbai - 400 086, Maharashtra

Mumbai
MAHARASHTRA
400086
India 
Phone  8657896002  
Fax    
Email  viraj.suvarna@roche.com  
 
Details of Contact Person
Public Query
 
Name  Heta Khokhani 
Designation  Manager- Clinical Operations 
Affiliation  Roche Products (India) Pvt. Ltd. 
Address  Roche Products (India) Pvt. Ltd. 146-B, 166 A, Unit No. 7, 8, 9 8th Floor, R City Office, R City Mall, Lal Bahadur Shastri Marg, Ghatkopar, Mumbai - 400 086, Maharashtra

Mumbai
MAHARASHTRA
400086
India 
Phone  9892440927  
Fax    
Email  heta.khokhani@roche.com  
 
Source of Monetary or Material Support  
F Hoffmann La Roche Ltd, CH-4070, Basel, Switzerland 
 
Primary Sponsor  
Name  F. Hoffmann- La Roche Ltd 
Address  Grenzacherstrasse 124 4058 Basel, Switzerland  
Type of Sponsor  Pharmaceutical industry-Global 
 
Details of Secondary Sponsor  
Name  Address 
Roche Products India Pvt Ltd  146-B, 166 A, Unit No. 7, 8, 9, 8th Floor, R City Office, R City Mall Lal Bahadur Shastri Marg, Ghatkopar, Mumbai- 400086 Maharashtra, India 
 
Countries of Recruitment     Argentina
Australia
Austria
Belgium
Brazil
Bulgaria
Canada
Chile
China
Croatia
Czech Republic
Denmark
Egypt
France
Germany
Hungary
India
Israel
Italy
Mexico
Netherlands
Poland
Portugal
United Kingdom
United States of America
Republic of Korea
Romania
Serbia
Slovakia
Spain
Taiwan
Thailand  
Sites of Study
Modification(s)  
No of Sites = 9  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Rupa Banerjee  Asian Institute of Gastroenterology, Hyderabad  Asian Institute of Gastroentereology, IBD Department, Room No. 2, 6th floor, Main Building Tower A, Survey No 136, 4/5 Plot No 2/3, Mindspace road, P Janardhan Reddy Nagar Gachibowli, Hyderabad, Telangana, 500032, India
Hyderabad
TELANGANA 
9849287530

rupabanerjee.aig@gmail.com 
Dr Saumin Prakashbhai Shah  Gujarat Gastro and Vascular Hospital  Opposite Shree Ram Petrol Pump, Anand Mahal Road, Adajan, Surat – 395009, Gujarat, India
Surat
GUJARAT 
9408042224

dr.sauminpshah@gmail.com 
Dr Samir Patil  Kingsway Hospital KIMS  Medisearch Life Sciences Pvt. Ltd., SPANV, Kingsway Road, Near Kasturchand Park, Nagpur, Maharashtra 440001, India
Nagpur
MAHARASHTRA 
8928686680

samirspatil@gmail.com 
Dr Shrikant Mukewar  MIDAS Multispecialty Hospital, Nagpur  Midas Multispeciality Hospital,392, Behind Empress Palace, Opp Singh Saab Dhaba, Wardha Road, Parsodi, Nagpur -440018
Nagpur
MAHARASHTRA 
7720033280

shrikant_mukewar@yahoo.com 
Dr Dhaval Rameshchandra Choksi  Sahyadri Super Speciality Hospital, Nashik  Mumbai-Agra Road, Wadala Rd, Dwarka Circle, Nashik, Maharashtra 422001, India
Nashik
MAHARASHTRA 
9850084244

dhavalrchoksi@gmail.com 
Dr Mukesh Jain   SMS Super-Speciality Hospital, Jaipur  SMS Superspeciality Hospital, Department of Gastroenterology, 10-9, Vivekanand Marg, Panch Batti, Sangram Colony, Ashok Nagar, Jaipur, Rajasthan 302007
Jaipur
RAJASTHAN 
919414323607

drmukeshjaingastro@gmail.com 
Dr Mukesh Kalla  SR Kalla Memorial Gastro & General Hospital  78-79 Dhuleshwar garden, Sardar Patel Marg, C Scheme, Jaipur, Rajasthan 302006
Jaipur
RAJASTHAN 
9829050622

drmkalla@rediffmail.com 
Dr Rajiv Mehta  Surat Institute of Digestive Sciences Hospitals  SIDS Hospital and Research Centre, A unit of SIDS Healthcare Private Limited. Off Ring Road, Near Shell petrol Pump, Ring Road – Sosyo circle lane, Surat – 395002, Gujarat, India
Surat
GUJARAT 
9537799664

rmgastro@yahoo.com 
Dr Ravi Shankar Bagepally  Yashoda Hospitals - Secunderabad  Yashoda Hospitals, Behind Hari Hara Kala Bhavan SP Road, Secunderabad- 500003, Telangana, India
Hyderabad
TELANGANA 
9391075600

b_ravishankar@yahoo.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 9  
Name of Committee  Approval Status 
Ethics Committee S.M.S. Medical College and Attached Hospitals  Approved 
Institutional Ethics Committee  Approved 
Institutional Ethics Committee Midas Multispecialty Hospital  Approved 
KIMS Kingsway Hospital Ethics Committee  Submittted/Under Review 
Nashik Sahyadri Hospitals Ethics Committee  Approved 
S.R.Kalla Memorial Ethical Committee For Human Research  Approved 
Surat Institute of digestive sciences ethics committee  Approved 
UNITY HOSPITAL ETHICS COMMITTEE  Approved 
Yashoda Academy of Medical Education and Research  Approved 
 
Regulatory Clearance Status from DCGI
Modification(s)  
Status 
Approved/Obtained 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K519||Ulcerative colitis, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Placebo  placebo IV at Weeks 0, 2, 6, and 10, followed by placebo SC Q4W from Week 12 through Week 52 
Intervention  RO7790121  500 mg IV at Weeks 0, 2, 6, and 10, followed by 450 mg SC every 4 weeks (Q4W) from Week 12 through Week 52 
 
Inclusion Criteria  
Age From  16.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  Males and females of childbearing potential who are abstinent or use contraception, and refrain from donating sperm, during the treatment period and for 95 days after the final dose with Active UC confirmed by biopsy and endoscopy. Participants must have experienced intolerance, inadequate response or loss of response to at least one amongst Steroids, Immunomodulators, Aminosalicylates, Anti-TNF agents, Anti-integrins, Anti-IL12/IL23, JAK inhibitors, S1P receptor modulators. Confirmed diagnosis of UC with supportive clinical, endoscopic, and histopathological evidence. Active UC confirmed by endoscopy (flexible sigmoidoscopy or colonoscopy)
extending more than 15cm from the anal verge.
Participants with proctitis only at baseline will be capped at 10% of the total enrollment. 
 
ExclusionCriteria 
Details  Severe UC (fulminant colitis, toxic megacolon, bowel perforation), Crohn’s disease, IBD
unclassified, sclerosing cholangitis CMV Colitis, treatment for Clostridioides difficile, positive HIV, HbsAg, TB during screening, Apheresis.
Any major surgery within 6 weeks prior to screening or a major surgery planned during the
study. History of malignancy within 5 years prior to screening visit, Organ transplant, congenital immunodeficiency. Clinically significant abnormality on laboratory tests during screening - Platelet count less than 100,000/µL; Hemoglobin less than 8 g/dL; Absolute lymphocyte count less than 500/µL. Use of approved UC treatment, or any IMP, or IV corticosteroid, use of NSAID. 
 
Method of Generating Random Sequence   Permuted block randomization, fixed 
Method of Concealment   Not Applicable 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Evaluate the efficacy of RO7790121 compared with placebo in inducing remission   Clinical remission, defined as mMS less than or equal to 2 with SFS equal to 0 or 1, RBS equal to 0, and ES equal to 0 or 1, at Week 12 
 
Secondary Outcome  
Outcome  TimePoints 
Evaluate the efficacy of RO7790121 compared with placebo in inducing and maintaining response.
Evaluate the efficacy of RO7790121 compared with placebo in TL1A biomarker-defined subpopulations of participants.
Evaluate the efficacy of RO7790121 compared with placebo in terms of UC-related symptoms and health-related quality of life. 
pmMS from baseline to Week 2. Endoscopic improvement and remission at Week 12. Histologic-endoscopic mucosal improvement less than or equal to 3.1 and ES equal to 0 or 1, at Week 12. Histologic-endoscopic remission less than 2 and ES equal to 0 or 1, at week 12. Clinical response of at least 2 points and 30% from baseline at week 12. Among TL1A biomarker subgroups, clinical remission and endoscopic improvement at week 12. 
 
Target Sample Size   Total Sample Size="400"
Sample Size from India="35" 
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)   20/04/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  14/11/2024 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="5"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Open to Recruitment 
Recruitment Status of Trial (India)  Closed to Recruitment of Participants 
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   The goal of this study is to evaluate how well and how safely RO7790121 works in people with moderate to severe ulcerative colitis (UC). RO7790121 is a type of antibody that targets a protein called TL1A, which is important for immune responses in the gut. By blocking TL1A, this treatment aims to reduce inflammation and prevent tissue damage in UC. Over the past decade, many new treatments have become available for UC, including biologics and small molecule drugs. Despite these advancements, there is still a need for treatments that are more effective and have fewer side effects, to help manage inflammation and improve long-term outcomes for patients with UC 
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