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Study to Assess the Efficacy and Safety of Rina-S in Participants With Advanced Gastrointestinal (GI) Cancers

A Phase 2, Open-label, Multicohort, Study of Rinatabart Sesutecan (Rina S) in Participants With Advanced Gastrointestinal (GI) Cancers

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07539311
Acronym
RAINFOL-09
Enrollment
160
Registered
2026-04-20
Start date
2026-05-11
Completion date
2028-11-01
Last updated
2026-05-13

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

Conditions

Gastrointestinal Cancers

Brief summary

This Phase 2 study will be conducted in different countries around the world with up to about 160 participants. The purpose of this study is to evaluate how well Rina-S works against GI cancers. The medication in this study is Rina-S monotherapy (by itself; no other cancer treatments). All participants will receive active drug; no one will be given placebo. Participation in the study will require visits to the study site(s). During site visits, there will be various tests (such as blood draws) and procedures (such as recording of heart activity, imaging/X-rays) to monitor whether the study treatment is safe and effective. The duration of the study will be different for every participant, but an average study duration of 22 months is expected for participants. This will include a treatment period (expected to last an average of 12 months), plus data collection periods before and after treatment. Participants will be asked to attend 1 to 5 visits at the study clinic for each cycle (duration of an individual cycle is 21 days). If a participant's cancer stays the same or gets better, and there are not any serious problems, participants can keep getting study treatment for as long as the study is open.

Detailed description

This is a Phase 2, open-label, multicenter, multi-cohort trial to evaluate the safety, efficacy, pharmacokinetics (PK), and pharmacodynamics of Rina-S as monotherapy in participants with GI cancers who have progressed on or after prior standard of care (SoC) therapies.

Interventions

BIOLOGICALRina-S

Intravenous (IV) administration.

Sponsors

Genmab
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: • All study cohorts * Participant has histologically or cytologically confirmed GI cancer. * Participant has documented metastatic or unresectable disease, not amenable to treatment with curative intent. * Participant has measurable disease per the Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 at baseline. * Participant must have radiological disease progression while on or after receiving the most recent regimen. * Participant has Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Participant has life expectancy ≥3 months. * Participant must be able to provide a newly obtained or archival tissue sample. * Participant must have adequate organ and bone marrow function, per laboratory test results prior to Rina-S administration. Key

Exclusion criteria

(all study cohorts): * Participant has clinically significant non-malignant gastrointestinal disorders, including but not limited to, diarrhea \> grade 1, ulcerative colitis, inflammatory bowel disease. * Participants with recent (up to 4 weeks) history of significant gastrointestinal bleeding, current cancer related ulcerations, fistula, abscess or recent perforation (within 4 to 6 weeks). * Participant has a past or current malignancy other than the inclusion diagnosis before the planned first dose of trial treatment, or any evidence of residual disease from a previously diagnosed malignancy. * Participants with newly identified or known unstable (eg, progressing brain metastases) or symptomatic central nervous system (CNS) metastases or history of carcinomatous meningitis (also known as leptomeningeal disease). * Prior treatment with topoisomerase-1 inhibitor containing antibody-drug conjugate (ADC). * Treatment with an anticancer agent within 28 days prior to the first dose of trial treatment. Note: Other protocol-defined Inclusion and

Design outcomes

Primary

MeasureTime frame
Confirmed Objective Response Rate (ORR)Up to approximately 22 months

Secondary

MeasureTime frame
Duration of Response (DOR)Up to approximately 22 months
Disease Control Rate (DCR)Up to approximately 22 months
Progression-free Survival (PFS)Up to approximately 22 months
Number of Participants with Treatment-emergent Adverse Events (TEAEs)Up to approximately 22 months
Maximum Concentration (Cmax) of Rina-S Related AnalytesUp to approximately 12 months
Area Under the Concentration-time Curve (AUC) of Rina-S Related AnalytesUp to approximately 12 months
Time to Reach Cmax (Tmax) of Rina-S Related AnalytesUp to approximately 12 months

Countries

United States

Contacts

CONTACTGenmab Trial Information
clinicaltrials@genmab.com+4570202728
STUDY_DIRECTORStudy Official

Genmab

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 14, 2026