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Real World Study Using Data from Rectal Cancer Patients Treated via the Compassionate Use Program (CUP)

A Real-world Study to Evaluate Clinical Outcomes of dostarlimab in Patients with Previously Untreated Stage II/III DNA mismatch repair-deficient (dMMR)/ Microsatellite instability-high (MSI-H) Locally Advanced Rectal Cancer - ??Real World Study Using Data from Rectal Cancer Patients Treated via the Compassionate Use Program (CUP)

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
NL-OMON
Registry ID
NL-OMON58029
Enrollment
4
Registered
2025-02-21
Start date
2026-04-08
Completion date
Unknown
Last updated
2026-06-22

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

Conditions

Untreated Stage II/III dMMR/MSI-H Locally Advanced Rectal Cancer Rectal cancer

Interventions

dostarlimab

Sponsors

GlaxoSmithKline
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: A new diagnosis of stage II or stage III (T3-T4, N0, or T any, N+) rectal cancer on or after 01 June 2022 Adults age = 18 years at stage II/III rectal cancer diagnosis date, previously untreated Initiated dostarlimab therapy as part of the CUP for treatment of stage II/III rectal cancer following date of stage II/III rectal cancer diagnosis, or those receiving dostarlimab treatment in countries via approved reimbursement pathwayLab results indicating dMMR status or MSI-H phenotype

Exclusion criteria

Exclusion criteria: Evidence of stage IV rectal cancer on or prior to the overall index date Evidence of malignancy other than rectal cancer, superficial skin cancer (i.e., nonmelanoma skin cancer), superficial bladder cancer, or other in situ cancer in the 2 years prior to date of stage II/III rectal cancer diagnosis Evidence of active treatment for malignancy other than rectal cancer, superficial skin cancer (i.e., non-melanoma skin cancer), superficial bladder cancer, or other in situ cancer in the 2 years prior to date of stage II/III rectal cancer diagnosis Evidence of initiation of dostarlimab in a clinical trial

Design outcomes

Primary

MeasureTime frame
1. Percentage of participants who maintain real-world complete clinical response (rw-cCR) for 12 months.Time frame: Index date (first overall tumor response assessment following end of dostarlimab treatment) up to 12 months2. Percentage of participants who maintain complete clinical and pathological response combined for 12 monthsTime frame: Index date (first overall tumor response assessment following end of dostarlimab treatment) up to 12 months

Secondary

MeasureTime frame
1. Percentage of participants with real-world best overall response (rwBOR) Time frame: Up to approximately 3 years

Countries

Australia, Belgium, Brazil, France, Guatemala, Ireland, Netherlands, Spain, United Kingdom

Contacts

Public ContactV Blades

GlaxoSmithKline

UK.Ireland-CPA@gsk.com+(44) 020 8047 5000

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Jun 29, 2026