A Study of the Duration of Dostarlimab in Untreated Mismatch Repair Deficient (dMMR)/ Microsatellite Instability-high (MSI-H) Locally Advanced Rectal Cancer (DuraSTAR)
A Phase 3b, Open-label Study Investigating the Duration of Neoadjuvant Dostarlimab Monotherapy in Participants With Untreated Stage II/III dMMR/MSI-H Locally Advanced Rectal Cancer
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Fase 3
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: US GSK Clinical Trials Call Center
- Telefonnummer: 877-379-3718
- E-mail: GSKClinicalSupportHD@gsk.com
Undersøgelse Kontakt Backup
- Navn: EU GSK Clinical Trials Call Center
- Telefonnummer: +44 (0) 20 89904466
- E-mail: GSKClinicalSupportHD@gsk.com
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Has histologically confirmed Stage II to III (T3-T4, N0, or T any, N+) locally advanced rectal adenocarcinoma.
- Has radiologically and endoscopically evaluable disease.
Has a tumor demonstrating the presence of either:
- dMMR status; MMR status must be assessed by immunohistochemistry for MMR protein expression (MLH1, MSH2, MSH6, PMS2) where loss of 1 or more proteins indicates dMMR; MMR status will be determined locally; or
- MSI-H phenotype as determined by polymerase chain reaction or by tissue next generation sequencing; MSI-H will be determined locally.
- Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
- Has adequate organ function.
Exclusion Criteria:
- Has received prior radiation therapy, systemic therapy, or surgery for management of rectal cancer.
- Has a tumor that, in the investigator's judgment, is causing symptomatic bowel obstruction or otherwise requires urgent/emergent local intervention. Participants with a history of bowel obstruction are eligible after obstruction is relieved by a diverting stoma (defunctioning colostomy). Patients with a history of bowel obstruction in the context of current rectal cancer diagnosis and treated with stenting are not eligible.
- Has an active autoimmune disease that has required systemic treatment in the past 2 years (i.e., with use of disease-modifying agents, corticosteroids, or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment.
- Has undergone any major surgical procedure, open biopsy, or experienced significant traumatic injury within 28 days prior to enrollment.
- Is receiving any other anticancer or experimental therapy.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Dostarlimab
|
Dostarlimab vil blive administreret.
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Percentage of participants who achieve clinical complete response (cCR) amongst participants who receive > 9 cycles (> 6 months) of dostarlimab monotherapy by investigator assessment
Tidsramme: Up to 168 weeks
|
Up to 168 weeks
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Overall cCR rate by investigator assessment
Tidsramme: Up to 171 weeks
|
Overall cCR rate is defined as the percentage of participants achieving cCR by investigator assessment at any disease assessment, regardless of duration of dostarlimab therapy among all enrolled participants.
|
Up to 171 weeks
|
|
Number of participants with sustained clinical complete response at 12 months (cCR12) as assessed by investigator
Tidsramme: Up to 171 weeks
|
cCR12 is defined as achievement and maintenance of cCR for 12 months from the disease assessment after the last dose of study intervention that first demonstrates cCR by investigator assessment.
|
Up to 171 weeks
|
|
Objective response rate (ORR) as assessed by investigator
Tidsramme: Up to 171 weeks
|
ORR is defined as the percentage of participants who achieve a best clinical response of partial response (PR), near complete response (nCR), or clinical complete response (cCR) at any disease assessment.
|
Up to 171 weeks
|
|
Number of participants with composite cCR12 and pathologic complete response (pCR) as assessed by investigator
Tidsramme: Up to 171 weeks
|
The composite endpoint of cCR12 and pCR is defined as the number of participants who either achieve cCR12, or achieve pCR after receiving dostarlimab (before receiving standard of care)
|
Up to 171 weeks
|
|
Time to cCR
Tidsramme: Up to 171 weeks
|
Time to cCR is defined as the time from the first dose of study intervention to the time of first cCR as assessed by the investigator.
|
Up to 171 weeks
|
|
Number of participants with treatment-emergent adverse events (TEAEs), serious adverse events (SAEs), immune-mediated adverse event (imAEs), and AEs leading to death or discontinuation of study intervention by severity
Tidsramme: Up to 171 weeks
|
Up to 171 weeks
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 308360
- 2026-526683-21 (Anden identifikator: EU CT Number)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
IPD-delingstidsramme
IPD-delingsadgangskriterier
IPD-deling Understøttende informationstype
- STUDY_PROTOCOL
- SAP
- ICF
- CSR
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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