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Silmitasertib (CX-4945) en combinación con quimioterapia para tumores sólidos refractarios en recaída

5 de octubre de 2026 actualizado por: Giselle Sholler, Milton S. Hershey Medical Center

Estudio de fase I/II de Silmitasertib (CX-4945) en combinación con quimioterapia en niños y adultos jóvenes con tumores sólidos refractarios en recaída

The purpose of this study is to evaluate the investigational drug, silmitasertib (a pill taken by mouth), in combination with FDA approved drugs for solid tumors. An investigational drug is one that has not been approved by the U.S. Food & Drug Administration (FDA), or any other regulatory authorities around the world for use alone or in combination with any drug, for the condition or illness it is being used to treat.

The goals of this part of the study are:

  • Establish a recommended dose of silmitasertib in combination with chemotherapy
  • Test the safety and tolerability of silmitasertib in combination with chemotherapy in subjects with cancer
  • To determine the activity of study treatments chosen based on:
  • How each subject responds to the study treatment
  • How long a subject lives without their disease returning/progressing

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Estimado)

104

Fase

  • Fase 2
  • Fase 1

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Ubicaciones de estudio

    • Quebec
      • Montreal, Quebec, Canadá, QC H3S 2G4
    • Alabama
      • Birmingham, Alabama, Estados Unidos, 35233
        • Reclutamiento
        • University of Alabama/Children's of Alabama
        • Contacto:
        • Investigador principal:
          • Elizabeth Alva
    • Arizona
      • Phoenix, Arizona, Estados Unidos, 85016
        • Reclutamiento
        • Phoenix Children's Hospital
        • Contacto:
        • Investigador principal:
          • Francis Eshun
    • California
      • Oakland, California, Estados Unidos, 94609
        • Reclutamiento
        • UCSF Benioff Children's Hospital Oakland
        • Investigador principal:
          • Jennifer Michlitsch
        • Contacto:
      • Sacramento, California, Estados Unidos, 95817
        • Reclutamiento
        • UC Davis Comprehensive Cancer Center
        • Contacto:
        • Investigador principal:
          • Marcio Malogolowkin
      • San Diego, California, Estados Unidos, 92123
        • Reclutamiento
        • Rady Children's Hospital
        • Contacto:
        • Investigador principal:
          • William Roberts
    • Connecticut
      • Hartford, Connecticut, Estados Unidos, 06106
    • Florida
      • Gainesville, Florida, Estados Unidos, 32611
        • Reclutamiento
        • University of Florida
        • Investigador principal:
          • Joanne Lagmay
        • Contacto:
      • Miami, Florida, Estados Unidos, 33155
      • Orlando, Florida, Estados Unidos, 32806
        • Reclutamiento
        • Arnold Palmer Hospital for Children
        • Contacto:
        • Investigador principal:
          • Jaime Libes-Bander
      • St. Petersburg, Florida, Estados Unidos, 33701
        • Reclutamiento
        • All Children's Hospital Johns Hopkins Medicine
        • Contacto:
        • Investigador principal:
          • Jennifer Dean
      • Tampa, Florida, Estados Unidos, 33614
        • Reclutamiento
        • St. Joseph's Children's Hospital
        • Investigador principal:
          • Don Eslin
        • Contacto:
    • Hawaii
      • Honolulu, Hawaii, Estados Unidos, 96813
        • Reclutamiento
        • Kapiolani Medical Center for Women and Children
        • Contacto:
        • Investigador principal:
          • Kelley Hutchins
    • Kentucky
      • Louisville, Kentucky, Estados Unidos, 40202
        • Reclutamiento
        • Norton Children's Research Institute/Affiliated with University of Louisville School of Medicine
        • Investigador principal:
          • Michael Ferguson
        • Contacto:
    • Michigan
      • Detroit, Michigan, Estados Unidos, 48201
        • Reclutamiento
        • Children's Hospital of Michigan/Wayne State University
        • Contacto:
        • Investigador principal:
          • Alissa Martin
    • Missouri
      • Kansas City, Missouri, Estados Unidos, 64108
        • Reclutamiento
        • Children's Mercy Hospitals and Clinics
        • Investigador principal:
          • Kevin Ginn
        • Contacto:
      • St Louis, Missouri, Estados Unidos, 63104
        • Reclutamiento
        • Cardinal Glennon Children's Medical Center
        • Investigador principal:
          • William Ferguson
        • Contacto:
    • New Jersey
      • Hackensack, New Jersey, Estados Unidos, 07601
        • Reclutamiento
        • Hackensack University Medical Center
        • Investigador principal:
          • Katharine Offer
        • Contacto:
    • Pennsylvania
      • Hershey, Pennsylvania, Estados Unidos, 17033
        • Reclutamiento
        • Penn State Milton S. Hershey Medical Center and Children's Hospital
        • Contacto:
        • Investigador principal:
          • Valerie Brown
    • Rhode Island
      • Providence, Rhode Island, Estados Unidos, 02903
        • Reclutamiento
        • Hasbro Children's Hospital
        • Investigador principal:
          • Bradley DeNardo
        • Contacto:
    • Tennessee
      • Nashville, Tennessee, Estados Unidos, 37232
        • Reclutamiento
        • Monroe Carrell Jr. Children's Hospital at Vanderbilt
        • Contacto:
        • Investigador principal:
          • Daniel Benedetti
    • Texas
      • Dallas, Texas, Estados Unidos, 75235
        • Reclutamiento
        • Children's Medical Center
        • Investigador principal:
          • Tanya Watt
        • Contacto:
    • Utah
      • Salt Lake City, Utah, Estados Unidos, 84113
        • Reclutamiento
        • Primary Children's Hospital
        • Investigador principal:
          • Matthew Dietz
        • Contacto:
    • Virginia
      • Richmond, Virginia, Estados Unidos, 23284
        • Reclutamiento
        • Virginia Commonwealth University
        • Contacto:
        • Investigador principal:
          • Madhu Gowda

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

No mayor que 30 años (Niño, Adulto)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  1. Age: Less than 30 years old at initial diagnosis

  2. Pathology All subjects must have a confirmed diagnosis of tumor type. Phase I: Relapsed/refractory solid tumors: Neuroblastoma, Ewing Sarcoma, Osteosarcoma, Rhabdomyosarcoma, Liposarcoma

    Phase II:

    • Relapsed/refractory Neuroblastoma
    • Relapsed/refractory Ewing sarcoma
  3. Tumor assessment:

    Disease assessment is required for eligibility and must be done after last dose of previous therapy and prior to first dose of study drug.

  4. Disease Status:

    Relapsed/Refractory Neuroblastoma Relapsed disease defined as neuroblastoma that was previously in remission after standard therapy (at least 4 cycles of aggressive multi-drug induction chemotherapy, with or without radiation and surgery, followed by immunotherapy, or according to a standard high-risk treatment/neuroblastoma protocol) and has now relapsed and is in any number of relapses.

    Refractory disease defined as High-risk neuroblastoma (as defined by INRG) that failed to achieve CR after at least 4 cycles of aggressive multi-drug induction chemotherapy, progression during upfront therapy or with disease remaining after standard immunotherapy.

    International Neuroblastoma Risk Group Staging System (INRG) High Risk NB defined as one of the following:

    1. Any age with International Neuroblastoma Risk Group (INRG) Stage L2, MS, or M with MYCN amplification
    2. Age ≥ 547 days and INRG Stage M regardless of biologic features
    3. Any age initially diagnosed with INRG Stage L1 MYCN amplified NBL who have progressed to Stage M without systemic chemotherapy
    4. Age ≥ 547 days of age initially diagnosed with INRG Stage L1, L2, or MS who have progressed to Stage M without systemic chemotherapy

    Relapsed/refractory Sarcoma Subjects that have relapsed following standard of care therapy or having progressed during standard of care therapy. Standard of care therapy for sarcoma includes multi-agent chemotherapy with local control consisting of either surgery or radiation therapy.

  5. Measurable or evaluable disease, including at least one of the following:

    • Measurable tumor by CT or MRI
    • MIBG or PET that is positive for disease
    • Bone Marrow biopsy/aspirate that is positive for disease
  6. Timing from prior therapy:

    Subjects must have fully recovered from the acute toxic effects of all prior anti- cancer therapy and be within the following timelines:

    1. Myelosuppressive chemotherapy: Must not have received within 2 weeks of enrollment onto this study.

    2. Small Molecule Inhibitors (anti-neoplastic agent): At least 2 weeks from the completion of therapy with a small molecule inhibitor.

    3. Immunotherapy: At least 4 weeks since the completion of any type of immunotherapy, e.g. tumor vaccines, CAR-T cells, anti-GD2 Monoclonal antibodies (ex. naxitamab, dinutuximab, etc.).

    4. Radiotherapy: At least 30 days since the last treatment except for radiation delivered with palliative intent to a non-target site.

    5. Stem Cell Transplant:

      • Allogeneic: No evidence of active graft vs. host disease
      • Allogeneic/Autologous: ≥ 2 months must have elapsed since transplant.
    6. MIBG Therapy: At least 6 weeks since treatment with MIBG therapy.

  7. Subjects must have a Lansky or Karnofsky Performance Scale score of >/= 50.

  8. Subjects must have adequate organ function at the time of enrollment:

    • Cardiac: Subjects must have a QTcF ≤ 480 msc.
    • Hematological: Hematological recovery as defined by ANC ≥750/μL
    • Liver: Adequate liver function as defined by AST and ALT <5x upper limit of normal
    • Renal: Subjects must have adequate renal function defined as:
    • estimated Glomerular Filtration rate (eGFR) as calculated from the Bedside Schwartz equation (for subjects < 17 years old) (in units of mL/min/1.73 m2) or via radioisotope GFR of ≥ 70 mL/min/1.73 m2. The Bedside Schwartz equation is: [(0.413) X (Height in cm)] / SCr
    • estimated Glomerular Filtration rate (eGFR) as calculated from the Cockcroft and Gault formula (for subjects ≥17 years old (in units of mL/min/1.73 m2) or via radioisotope GFR of ≥ 70 mL/min/1.73 m2. The Cockcroft and Gault formula is: [(140-age) x (Wt in kg) x (0.85 if female)] / (72 x SCr)
    • OR a 24 hour urine Creatinine clearance ≥ 70 mL/min/1.73 m2
  9. Subjects of childbearing potential must have a negative serum pregnancy test. Subjects of childbearing potential must agree to use effective measures to avoid pregnancy.

  10. Written informed consent in accordance with institutional and FDA guidelines must be obtained from all subjects (or subjects' legal representative).

Exclusion Criteria:

  1. Investigational Drugs: Subjects who are currently receiving another investigational drug are excluded from participation.

  2. Anti-cancer Agents: Subjects who are currently receiving other anticancer agents are not eligible. Subjects must have fully recovered from the hematological and bone marrow suppression effects of prior therapy.

  3. Subjects who are currently receiving Vitamin K antagonists (warfarin).

  4. Subjects who are currently receiving the class of lipid-lowering medications HMG-CoA reductase inhibitors (statins).

  5. Infection: Subjects who have an uncontrolled infection are not eligible until the infection is judged to be well controlled in the opinion of the investigator.

  6. Subjects who, in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study, or in whom compliance is likely to be suboptimal, should be excluded.

  7. Subjects with any clinically significant unrelated systemic illness (serious infections or significant cardiac, pulmonary, hepatic or other organ dysfunction), that in the opinion of the investigator would compromise the subject's ability to tolerate protocol therapy, put them at additional risk for toxicity or would interfere with the study procedures or results.

  8. Subjects with any of the following gastrointestinal disorders:

    1. Active malabsorption (e.g. short gut) syndrome.
    2. Uncontrolled diarrhea (excess of 4 stools/day)
    3. Gastritis, ulcerative colitis, Chron's disease or hemorrhagic coloproctitis
    4. History of gastric or small bowel surgery involving any extent of gastric or small bowel resection
  9. Lactating subjects are not eligible unless they have agreed to not breastfeed their infants. There is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the nursing subject with silmitasertib. (NOTE: breast milk cannot be stored for future use while the nursing subject is being treated on study.)

  10. Subjects with a history of any other malignancy.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: No aleatorizado
  • Modelo Intervencionista: Asignación Secuencial
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Phase I- Dose level 1

Silmitasertib 600 mg/m2 twice a day plus Neuroblastoma: Regimen A: Irinotecan and Temozolomide Sarcoma: Regimen B: Vincristine, Irinotecan and Temozolomide

Capsules

Otros nombres:
  • CX-4945

IV

Oral or IV

IV

Experimental: Phase I- Dose level 2

Silmitasertib 800 mg/m2 twice a day plus Neuroblastoma: Regimen A: Irinotecan and Temozolomide Sarcoma: Regimen B: Vincristine, Irinotecan and Temozolomide

Capsules

Otros nombres:
  • CX-4945

IV

Oral or IV

IV

Experimental: Phase II- Relapsed/refractory Neuroblastoma

Silmitasertib RP2D twice a day plus Irinotecan and Temozolomide

Capsules

Otros nombres:
  • CX-4945

IV

Oral or IV

Experimental: Phase II- Relapsed/refractory Ewing sarcoma

Silmitasertib RP2D twice a day plus Vincristine, irinotecan and temozolomide

Capsules

Otros nombres:
  • CX-4945

IV

Oral or IV

IV

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Phase I- Number of Participants with Adverse Events as a Measure of Safety and Tolerability
Periodo de tiempo: 2 years plus 30 days

To characterize the safety profile of silmitasertib in combination with chemotherapy

2 years plus 30 days
Phase I- Number of Participants with Dose Limiting Toxicities to determine RP2D
Periodo de tiempo: 21 days

To determine the Recommended Phase 2 Dose (RP2D) of silmitasertib in combination with chemotherapy

21 days
Phase II- Determine the Overall Response Rate (ORR) of Participants using INRC
Periodo de tiempo: 2 years

To evaluate the efficacy of silmitasertib in combination with chemotherapy in 2 disease cohorts, based upon Overall response rate (ORR)

2 years

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Phase I- Determine the Overall Response Rate (ORR) of Participants using INRC
Periodo de tiempo: 2 years

To evaluate the efficacy of silmitasertib in combination with chemotherapy in 2 disease cohorts based upon Overall response rate (ORR)

2 years
Number of participants with progression free survival (PFS) during study
Periodo de tiempo: 2 years

To evaluate the efficacy of silmitasertib in combination with chemotherapy in 2 disease cohorts based upon Progression Free Survival (PFS)

2 years
Phase II- Length of time that participants experience Overall Survival (OS)
Periodo de tiempo: 7 years

To evaluate the efficacy of silmitasertib in combination with chemotherapy in 2 disease cohorts based upon Overall Survival (OS)

7 years
Phase II- Number of Participants with Adverse Events as a Measure of Safety and Tolerability
Periodo de tiempo: 2 years plus 30 days

To characterize the safety profile of silmitasertib in combination with chemotherapy

2 years plus 30 days
Phase II - Determine the Disease Control Rate (DCR) of participants based on response
Periodo de tiempo: 2 years plus 30 days

Disease Control Rate (DCR): Defined as CR + PR + MR + SD for Neuroblastoma (INRC) and CR + PR + SD for Ewing Sarcoma (RECIST v1.1).

2 years plus 30 days

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Investigadores

  • Silla de estudio: Chandrika Behura, MD, Penn State Health Children's Hospital

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

30 de octubre de 2024

Finalización primaria (Estimado)

1 de noviembre de 2030

Finalización del estudio (Estimado)

1 de noviembre de 2035

Fechas de registro del estudio

Enviado por primera vez

2 de agosto de 2024

Primero enviado que cumplió con los criterios de control de calidad

2 de agosto de 2024

Publicado por primera vez (Actual)

7 de agosto de 2024

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

6 de octubre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

5 de octubre de 2026

Última verificación

1 de octubre de 2026

Más información

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. .

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