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A Study to Evaluate the Pharmacokinetics, Safety and Efficacy of Afimkibart (RO7790121) in Children With Moderately to Severely Active Ulcerative Colitis

A Phase III Randomized Double-Blind Multi-Center Treat-Through Study to Evaluate the Pharmacokinetics, Safety and Efficacy of Induction and Maintenance Therapy With Afimkibart (RO7790121) in Children Aged 2 - 17 Years With Moderately to Severely Active Ulcerative Colitis

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07158242
Acronym
AMETRINE-PEDS
Enrollment
100
Registered
2025-09-05
Start date
2026-04-15
Completion date
2031-03-31
Last updated
2026-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Moderately to Severely Active Ulcerative Colitis

Brief summary

This Phase III, randomized, double-blind, multicenter, induction and maintenance study will evaluate the safety and efficacy of Afimkibart (RO7790121) in pediatric participants with moderate to severe active ulcerative colitis (UC).

Interventions

Afimkibart will be administered as IV infusion. Afimkibart will be administered as SC injection.

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
2 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Bodyweight \>= 10 kilogram (kg) * Confirmed diagnosis of UC * Moderately to severely active UC, defined as modified Mayo Score (mMS) or 5 to 9 points, including endoscopic score of 2 or 3, confirmed by centrally read endoscopy (flexible sigmoidoscopy or colonoscopy) * Demonstrated intolerance or inadequate response (IR) to one or more of the following categories of drugs: systemic corticosteroids, immunomodulators, and/or biologic therapies as outlined in the protocol

Exclusion criteria

* Monogenic disorder pertaining to infant onset inflammatory bowel disease (IBD) * Current diagnosis of Crohn's disease (CD), abdominal/intrabdominal/perianal fistula and/or abscess, indeterminant colitis, IBD-unclassified, microscopic colitis, ischemic colitis, infectious colitis, radiation colitis, or active diverticular disease * Presence of an ostomy or ileoanal pouch * Current diagnosis or suspicion of primary sclerosing cholangitis * Any major surgery within 6 weeks prior to screening or a major planned surgery during the study * Active tuberculosis (TB) infection suggested by positive TB testing, clinical symptoms, and/or chest imaging (X-ray or CT)

Design outcomes

Primary

MeasureTime frame
Percentage of Participants With Clinical Remission at Week 52At Week 52

Secondary

MeasureTime frame
Change From Baseline in Pediatric Ulcerative Colitis Activity Index (PUCAI) ResponseFrom Baseline, at Week 12
Percentage of Participants With PUCAI RemissionAt Week 12
Change From Baseline in Tummy Ulcerative Colitis (TUMMY-UC) ScoresFrom Baseline to Week 12
Partial Modified Mayo Score (pmMS)At Week 12
Percentage of Participants With Symptomatic ResponseAt Week 12
Percentage of Participants With Symptomatic RemissionAt Week 12
Change From Baseline in PUCAI Response at Week 52From Baseline, at Week 52
Percentage of Participants With PUCAI Remission at Week 52At Week 52
Change From Baseline in TUMMY-UC ScoresFrom Baseline to Week 52
Percentage of Participants With Endoscopic RemissionAt Week 52
Percentage of Participants With Endoscopic ImprovementAt Week 52
Percentage of Participants With Histologic ImprovementAt Week 52
Percentage of Participants With Histologic-endoscopic Mucosal ImprovementAt Week 52
Percentage of Participants With Histologic-endoscopic Mucosal RemissionAt Week 52
Percentage of Participants With Clinical Remission Without the use of CorticosteroidsAt Week 52
Percentage of Participants With Adverse Events (AEs)From Baseline up to approximately 4 years
Serum Concentration of AfimkibartUp to approximately 4 years

Countries

Australia, Brazil, Canada, China, South Africa, Taiwan, Thailand, United Kingdom, United States

Contacts

CONTACTReference Study ID Number: CA45905 https://forpatients.roche.com/ No attachments to email below.
global-roche-genentech-trials@gene.com888-662-6728 (U.S. and Canada)
CONTACTFastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry
STUDY_DIRECTORClinical Trials

Hoffmann-La Roche

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026