Two Part (Phase1b/ Phase3) Trial of Subcutaneous Dostarlimab Plus Carboplatin-Paclitaxel in Participants With Primary Advanced or Recurrent Endometrial Cancer (SAPPHIRE)
An Open-label, Multicenter, 2-Part Study: A Phase 1b Dose Selection Followed by a Randomized Phase 3 to Evaluate the Pharmacokinetics, Efficacy, and Safety of Subcutaneous Dostarlimab Plus Carboplatin-Paclitaxel Versus Intravenous Dostarlimab Plus Carboplatin-Paclitaxel in Participants With Primary Advanced or Recurrent Endometrial Cancer (SAPPHIRE)
This is an open-label study, meaning both the researchers and participants will know which treatment is being given.
The study has two parts. In Part 1, researchers will identify the most suitable SC dose. In Part 2, participants will be randomly assigned by chance to receive dostarlimab as either an SC injection or an IV infusion. All participants will also receive carboplatin and paclitaxel. Treatment may continue for up to 3 years, with participants closely monitored throughout the study.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Tipo de estudio
Inscripción (Estimado)
Fase
- Fase 3
Contactos y Ubicaciones
Estudio Contacto
- Nombre: US GSK Clinical Trials Call Center
- Número de teléfono: 877-379-3718
- Correo electrónico: GSKClinicalSupportHD@gsk.com
Copia de seguridad de contactos de estudio
- Nombre: EU GSK Clinical Trials Call Center
- Número de teléfono: +44 (0) 20 89904466
- Correo electrónico: GSKClinicalSupportHD@gsk.com
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Participant is at least 18 years of age (or the legal age of consent in the jurisdiction in which the trial is taking place) at the time of signing the Informed Consent Form (ICF).
- Participant has primary Stage III or Stage IV disease or first recurrent EC.
- Participant must have a documented Mismatch repair (MMR)/Microsatellite Instability (MSI) status.
- Participant is capable of giving signed informed consent, including compliance with the requirements and restrictions listed in the ICF and in the protocol.
- Participant has an Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2 for Part 1 and an ECOG performance status of 0 or 1 for Part 2.
- Participant has adequate organ function.
Exclusion Criteria:
- Participant has history of or active autoimmune disease that has required systemic treatments within the 2 years prior to screening.
- Participant has a history of severe allergic and/or anaphylactic reactions to chimeric, human or humanized antibodies, fusion proteins, or known hypersensitivity to carboplatin, paclitaxel or dostarlimab components or excipients.
- Participant has received prior therapy with anti-programmed death protein 1 (PD-1), anti-programmed cell death ligand 1 (PD-L1), or anti-PD-L2 agent.
- Participant has known uncontrolled brain or central nervous system (CNS) metastases.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación Secuencial
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: Part 1 (Phase 1b) SC dostarlimab and IV dostarlimab
Participants will receive SC dostarlimab in Cohorts 1, 2, 4, 5 and 6, at different doses, to determine the doses of SC dostarlimab that will yield drug exposures comparable to approved IV dosing regimens. Participants in Cohort 3 will receive IV dostarlimab. Participants in all cohorts will receive carboplatin and paclitaxel. After 6 cycles, all participants will receive IV dostarlimab for up to 3 years until progression, death, or intolerable toxicities. |
Dostarlimab will be administered as SC injection and IV infusion Carboplatin and paclitaxel will be administered as an IV infusion |
|
Experimental: Part 2 (Phase 3): SC dostarlimab (experimental) or IV dostarlimab (standard of care)
Eligible participants will be randomly assigned to receive either SC dostarlimab or IV dostarlimab (standard of care arm) in a 1:1 ratio. Participants randomized to the experimental arm will receive SC dostarlimab in combination with carboplatin and paclitaxel for 6 cycles, followed by SC dostarlimab monotherapy for up to 3 years of treatment in total. Participants randomized to the standard of care arm will receive IV dostarlimab in combination with carboplatin and paclitaxel for 6 cycles, followed by IV dostarlimab monotherapy for up to 3 years of treatment in total. |
Dostarlimab will be administered as SC injection and IV infusion Carboplatin and paclitaxel will be administered as an IV infusion |
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
|---|---|
|
Part 1: Serum Trough Concentration (Ctrough) After First Dose of Dostarlimab
Periodo de tiempo: Up to 42 days
|
Up to 42 days
|
|
Part 1: Area Under the Concentration-time Curve (AUC) of Dostarlimab
Periodo de tiempo: Up to 42 days
|
Up to 42 days
|
|
Part 2: Observed Ctrough of Dostarlimab
Periodo de tiempo: Up to 168 days
|
Up to 168 days
|
|
Part 2: Model-predicted (MP) AUC of Dostarlimab
Periodo de tiempo: Up to 21 days
|
Up to 21 days
|
|
Part 2: MP AUC of Dostarlimab
Periodo de tiempo: Up to 168 days
|
Up to 168 days
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Part 1: Ctrough of Dostarlimab
Periodo de tiempo: Up to 42 days
|
Up to 42 days
|
|
|
Part 1: AUC of Dostarlimab
Periodo de tiempo: Up to 42 days
|
Up to 42 days
|
|
|
Part 1: Maximum Observed Concentration (Cmax) of Dostarlimab
Periodo de tiempo: Up to 42 days
|
Up to 42 days
|
|
|
Part 1: Time to Peak Drug Concentration (Tmax) of Dostarlimab
Periodo de tiempo: Up to 42 days
|
Up to 42 days
|
|
|
Parts 1 and 2: Number of Participants Experiencing Adverse Events (AEs), Serious AEs (SAEs), Treatment-emergent AEs (TEAEs) and Immune-mediated AEs (imAEs)
Periodo de tiempo: Up to 39 months
|
Up to 39 months
|
|
|
Parts 1 and 2: Number of Participants with TEAEs Leading to Infusion or Injection Interruption, Dose Modifications, Trial Intervention Discontinuation, or Death
Periodo de tiempo: Up to 39 months
|
Up to 39 months
|
|
|
Parts 1 and 2: Confirmed Overall Response Rate (ORR)
Periodo de tiempo: Up to 3 years
|
Confirmed ORR is defined as the percentage of participants reaching confirmed complete response (CR) or confirmed partial response (PR) per RECIST 1.1 by blinded independent central review (BICR) and investigator assessment |
Up to 3 years
|
|
Parts 1 and 2: Duration of Response (DoR)
Periodo de tiempo: Up to 3 years
|
DoR per RECIST 1.1 by BICR and investigator assessment is defined as the time from the date of first documented objective response of CR or PR that is subsequently confirmed until the date of first documented progressive disease (PD) or death due to any cause, whichever comes first |
Up to 3 years
|
|
Parts 1 and 2: Progression-free Survival (PFS)
Periodo de tiempo: Up to 3 years
|
PFS is defined as the time from the date of randomization to the date of first documented objective tumor progression per RECIST 1.1 by BICR and investigator assessment or death due to any cause, whichever comes first |
Up to 3 years
|
|
Parts 1 and 2: Overall Survival (OS)
Periodo de tiempo: Up to 3 years
|
OS is defined as the time from the date of randomization to the date of death due to any cause |
Up to 3 years
|
|
Part 1: Number of Participants with Antidrug Antibody (ADAs) against Dostarlimab
Periodo de tiempo: Up to 39 months
|
Up to 39 months
|
|
|
Part 2: Number of Participants with ADAs against Dostarlimab
Periodo de tiempo: Up to 3 years
|
Up to 3 years
|
|
|
Part 2: MP Ctrough of Dostarlimab
Periodo de tiempo: Up to 168 days
|
Up to 168 days
|
|
|
Part 2: MP Ctrough at Steady State of Dostarlimab
Periodo de tiempo: Up to 168 days
|
Up to 168 days
|
|
|
Part 2: MP AUC at Steady State of Dostarlimab
Periodo de tiempo: Up to 168 days
|
Up to 168 days
|
|
|
Part 2: MP Cmax of Dostarlimab
Periodo de tiempo: Up to 168 days
|
Up to 168 days
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Director de estudio: GSK Clinical Trials, GlaxoSmithKline
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Estimado)
Finalización primaria (Estimado)
Finalización del estudio (Estimado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Enfermedades urogenitales
- Enfermedades Genitales
- Neoplasias urogenitales
- Neoplasias por sitio
- Neoplasias
- Enfermedades urogenitales femeninas
- Enfermedades urogenitales femeninas y complicaciones del embarazo
- Enfermedades uterinas
- Enfermedades Genitales Femeninas
- Neoplasias Genitales Femeninas
- Neoplasias Uterinas
- Neoplasias Endometriales
- Químicos orgánicos
- Hidrocarburos
- Cicloparafinas
- Hidrocarburos, alicíclicos
- Hidrocarburos, cíclico
- Terpenos
- Complejos de coordinación
- Taxaides
- Ciclodecanos
- Diterpenos
- Carboplatino
- Paclitaxel
- dostarlimab
Otros números de identificación del estudio
- 300118
- 2025 (Subvención/contrato del NIH de EE. UU.)
- 2025-525060-15-00 (Ctis)
- EN-35 (Otro identificador: ENGOT Number)
- GOG-3125 (Otro identificador: GOG Number)
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Descripción del plan IPD
Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://www.gsk-studyregister.com/gsk-patient-level-data-sharing-july2025.pdf
Marco de tiempo para compartir IPD
Anonymized IPD will be made available within 6 months of publication of primary, key secondary and safety results for studies in product with approved indication(s) or terminated asset(s) across all indications.
Criterios de acceso compartido de IPD
Anonymized IPD is shared with researchers whose proposals are approved by an Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months but an extension may be granted, when justified, for up to 6 months.
Tipo de información de apoyo para compartir IPD
- PROTOCOLO DE ESTUDIO
- SAVIA
- CIF
- RSC
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .