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Proton Beam Therapy (PBT) versus Intensity-Modulated Radiation Therapy (IMRT) Trial

5 oktober 2026 bijgewerkt door: M.D. Anderson Cancer Center

Fase IIB gerandomiseerde studie van protonenbundeltherapie versus intensiteitsgemoduleerde bestralingstherapie voor de behandeling van slokdarmkanker

The goal of this clinical research study is to learn how safe and effective proton-beam therapy (PBT) may be in comparison to intensity modulated radiation therapy (IMRT) in combination with chemotherapy in patients with esophageal cancer.

PBT and IMRT are both forms of radiation therapy that are designed to treat a specific area of the body while affecting as little of the surrounding normal tissue as possible. PBT is a newer technology that is designed to further reduce the amount of radiation that affects the surrounding normal tissue. However, this is still being studied.

Studie Overzicht

Toestand

Actief, niet wervend

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Study Treatment:

If you are found to be eligible to take part in this study, you will be randomly assigned (as in the flip of a coin) to 1 of 2 study groups:

  • If you are in Group 1, you will receive IMRT.
  • If you are in Group 2, you will receive PBT.

You will receive radiation therapy 1 time each day, 5 days a week (Monday through Friday) for up to 28 treatments.

Your doctor may think it is in your best interest to also receive chemotherapy while you are receiving radiation therapy. If this occurs, you will sign a separate consent form for these drugs with a full description of how they are given and the risks they may cause.

Study Visits:

Before you begin receiving radiation therapy, you will have a baseline visit. The following tests and procedures will be performed:

  • Blood (about 1-2 tablespoons) will be drawn for routine tests.
  • Your performance status will be recorded.
  • You will have a PET/CT or CT scan to check the status of the disease.
  • You will have lung function tests
  • You will complete the symptom and quality of life questionnaires.
  • Your esophagus will be examined using an endoscope. If the doctor thinks it is needed, you will have a biopsy to check the status of the disease.

You will then have a study visit every week while you are receiving radiation therapy. The following tests and procedures will be performed:

  • Your medical history will be recorded.
  • You will have a physical exam.
  • Your performance status, weight, and vital signs will be recorded.
  • Blood (about 1-2 tablespoons) will be drawn for routine tests.
  • You will complete the symptom and quality of life questionnaires.

Length of Study:

You will receive radiation therapy for up to 28 treatments (about 5½ weeks). You will no longer be able to receive radiation therapy if the disease gets worse, if intolerable side effects occur, or if you are unable to follow study directions.

Your participation on the study will be over once you have completed the follow-up visits.

Follow-Up:

After you stop receiving radiation therapy, there will be a 4-6 week break. During this time, you will contacted 2 times each week to complete the symptom and quality of life questionnaires. You will receive a call from an automated calling service or from the study staff at a scheduled time of your choosing. You will continue to be followed routinely during treatment and for follow-up visits and tests.

About 4-6 weeks after you stop receiving radiation therapy, the following tests and procedures will be performed:

  • Your medical history will be recorded.
  • You will have a physical exam.
  • Your performance status, weight, and vital signs will be recorded.
  • You will have a PET/CT scan to check the status of the disease.
  • You will have lung function tests.
  • Blood (about 1-2 tablespoons) will be drawn for routine tests.
  • You will complete the symptom and quality of life questionnaires.
  • Your esophagus will be examined using an endoscope. If the doctor thinks it is needed, you will have a biopsy to check the status of the disease.

If your doctor thinks it is in your best interest after you have completed radiation therapy, you will have surgery to remove the tumor. You will sign a separate consent form that describes the procedure and its risks. As part of this study, the study doctor will check you for side effects and discomfort after the surgery.

Every 3-4 months for 2 years, and then every 4-6 months for the next 3 years, you will have follow-up visits. The following tests and procedures will be performed:

  • Your medical history will be recorded.
  • You will have a physical exam.
  • Your performance status, weight, and vital signs will be recorded.
  • You will have either a CT or a PET/CT scan to check the status of the disease.
  • You will complete the symptom and quality of life questionnaires. (If the disease gets worse, these questionnaires will no longer be completed.)

Additionally, the following tests and procedures will be performed at follow-up visits only when the doctor thinks they are needed:

  • Blood (about 1-2 tablespoons) may be drawn for routine tests.
  • You may have lung function tests.
  • Your esophagus will be examined using an endoscope. If the doctor thinks it is needed, you will have a biopsy to check the status of the disease.

You may be contacted by the study staff to ask about your health, even if you choose not to return to MD Anderson for follow-up visits after completing treatment for esophageal cancer.

This is an investigational study. IMRT and PBT are delivered using FDA-approved and commercially available methods. It is investigational to compare IMRT to PBT.

Up to 180 patients will take part in this study. All will be enrolled at MD Anderson.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

147

Fase

  • Fase 2

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Verenigde Staten
    • Texas
      • Houston, Texas, Verenigde Staten, 77030
        • MD Anderson Cancer Center

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  1. Age >/= 18
  2. Histologically documented adenocarcinoma or squamous cell carcinoma of the cervical or thoracic esophagus or gastroesophageal junction or cardia of stomach.
  3. Potentially resectable or unresectable esophageal cancer patients
  4. Induction chemotherapy prior to concurrent chemoradiation allowed
  5. Prior Endoscopic Mucosal Resection (EMR) with a diagnosis of stage II-III esophageal cancer is eligible
  6. Performance status of Karnofsky Performance Scale (KPS) >/= 60 or Eastern Cooperative Oncology Group (ECOG) = 0, 1, or 2.
  7. Prior thoracic radiation allowable only if there is minimal to no overlap with the treatment area estimated at the time of consultation.
  8. Negative pregnancy test (serum or urine) for women of child bearing potential. All protocol participants must agree to adequate contraception.
  9. Complete blood count (CBC) and complete metabolic panel (chemo-14: Glucose, Calcium, Albumin, Total Protein, Sodium, Potassium, Carbon Dioxide (CO2), Chloride, Blood Urea Nitrogen (BUN), Creatinine, Alkaline Phosphatase, Alanine Aminotransferase (ALT) Serum Glutamic Pyruvic Transaminase (SGPT), Aspartate Aminotransferase (AST) Serum Glutamic-oxaloacetic Transaminase (SGOT), and Bilirubin) to assess adequate hematologic, renal and hepatic functioning will be obtained. The values are as follows: Adequate hematologic (White Blood Count (WBC) >2,500/uL, platelets > 75,000/uL), renal (Serum creatinine </= 1.5X Upper Limit of Normal (ULN) or creatinine clearance > 50 mL/min), and liver function (bilirubin </=1.5 fold the upper limit of normal and liver enzymes < 3 fold the upper limit of normal)
  10. Able to communicate in the English language.
  11. Any patient deemed eligible for chemoradiation for esophageal cancer treatment.

Exclusion Criteria:

  1. Patients with active second malignancy are allowed as long as it is determined by the treating physician that the treatment of esophageal cancer is of higher priority through proper evaluation. However patients with active stage 4, metastatic cancers, receiving other systemic therapies at the time of the esophageal cancer diagnosis, will not be eligible.
  2. Pregnant or breast-feeding females
  3. Clinically significant uncontrolled major cardiac, respiratory, renal, hepatic, gastrointestinal or hematologic disease but not limited to: a) active uncontrolled infection; b) Symptomatic congestive heart failure, unstable angina, or cardiac dysrrhythmia not controlled by pacer device; c) no myocardial infarction within 3 months of registration
  4. Radiation treatment alone without concurrent chemotherapy or chemotherapy use alone.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Proton Beam Therapy (PBT)

Radiation therapy 1 time each day, 5 days a week (Monday through Friday) for up to 28 treatments. 1.8 Gy (or at RBE ("Relative Biologic Equivalence" for PBT)) to be delivered to the periphery of the planning target volume (PTV).
Straling: Proton Beam Therapy (PBT)

1.8 Gy (Relative Biologic Equivalence ((RBE)) to be delivered to the periphery of the planning target volume (PTV) 1 time each day, 5 days a week (Monday through Friday) for up to 28 treatments.

Andere namen:
  • XRT
  • Bestralingstherapie
Gedragsmatig: Questionnaires

Symptom and Quality of Life questionnaires completed at baseline, every week during radiation therapy, during break after radiation therapy, and during follow up phase.

Andere namen:
  • Enquêtes
Actieve vergelijker: Intensity Modulated Radiation Therapy (IMRT)

Radiation therapy 1 time each day, 5 days a week (Monday through Friday) for up to 28 treatments. 1.8 Gy to be delivered to the periphery of the planning target volume (PTV).
Gedragsmatig: Questionnaires

Symptom and Quality of Life questionnaires completed at baseline, every week during radiation therapy, during break after radiation therapy, and during follow up phase.

Andere namen:
  • Enquêtes
Straling: Intensity Modulated Radiation Therapy (IMRT)

1.8 Gy to be delivered to the periphery of the planning target volume (PTV) 1 time each day, 5 days a week (Monday through Friday) for up to 28 treatments.

Andere namen:
  • XRT
  • Bestralingstherapie

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Progression-Free Survival (PFS)
Tijdsspanne: 6 weeks after radiation therapy

Defined from the time of enrollment to the date of death or any recurrence. The progression-free survival (PFS) time distribution will be estimated in each treatment arm using the Kaplan-Meier method.
6 weeks after radiation therapy
Total Toxicity Burden (TTB)
Tijdsspanne: 12 months

TTB defined from the time of randomization to 12 months after randomization. Total toxicity burden (TTB) is computed as a composite score from serious adverse events (SAEs) and, among patients who undergo surgery, postoperative complications (POCs).
12 months

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

M.D. Anderson Cancer Center

Medewerkers

National Cancer Institute (NCI)
Massachusetts General Hospital

Onderzoekers

  • Hoofdonderzoeker: Steven H. Lin, MD,PHD, M.D. Anderson Cancer Center

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Nuttige links

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

30 april 2012

Primaire voltooiing (Geschat)

30 april 2027

Studie voltooiing (Geschat)

30 april 2027

Studieregistratiedata

Eerst ingediend

13 januari 2012

Eerst ingediend dat voldeed aan de QC-criteria

18 januari 2012

Eerst geplaatst (Geschat)

19 januari 2012

Updates van studierecords

Laatste update geplaatst (Werkelijk)

6 oktober 2026

Laatste update ingediend die voldeed aan QC-criteria

5 oktober 2026

Laatst geverifieerd

1 oktober 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • 2011-1036
  • NCI-2012-00078 (Register-ID: NCI-CTRP-Clinical Trial Reporting Registry)
  • 5U19CA021239 (Subsidie/contract van de Amerikaanse NIH)

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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