- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT07693855
Hypofractionated Adjuvant Radiotherapy for Thymic Epithelial Tumors (THOR)
Thymic Epithelial Tumor Hypofractionated Adjuvant Radiotherapy (THOR): A Multi-center Single-Arm Prospective Clinical Trial
Přehled studie
Postavení
Detailní popis
Patients with pathologically confirmed thymic epithelial tumors, including thymoma and thymic carcinoma, who have undergone radical thymothymectomy and have an indication for postoperative radiotherapy will receive hypofractionated adjuvant radiotherapy. Base regimens are 40 Gy (RBE) in 15 fractions or 42.5 Gy (RBE) in 16 fractions. For patients with incomplete resection, close margins, residual disease, or other high-risk tumor-bed features, an optional tumor-bed boost may be delivered at investigator discretion, using 10 Gy (RBE) in 4 fractions or, for R2 macroscopic residual disease, 16 Gy (RBE) in 6 fractions. Treatment is delivered once per workday over approximately 3 to 4 weeks, with an additional 1 to 2 weeks if boost is delivered.
Photon therapy with IMRT or VMAT/RapidArc and proton therapy with pencil-beam scanning IMPT are both allowed. Mixed photon and proton treatment courses are not allowed. Target volumes include the mediastinal tumor bed, with pleural or pericardial tumor bed coverage when clinically indicated. Routine elective irradiation of uninvolved mediastinal lymph node stations is not allowed.
Participants are followed at baseline, during treatment, and after treatment at 1, 3, and 6 months, every 6 months through 2 years, and then annually until progression, death, or completion of protocol-specified follow-up. Assessments include clinical evaluation, adverse event assessment using CTCAE version 6.0, CT imaging assessed using RECIST 1.1, pulmonary function testing, cardiac sonography and electrocardiography, EORTC QLQ-C30, and protocol-specified dosimetric analyses.
The primary efficacy analysis uses a Bayesian beta-binomial model for the 5-year local control rate. The study requires 55 evaluable patients, with a total accrual goal of 69 patients to account for approximately 20 percent attrition. Safety monitoring includes semiannual interim reports, annual reports to the ethics committee, and stopping rules for excessive serious adverse events related to the intervention.
Typ studie
Zápis (Odhadovaný)
Fáze
- Nelze použít
Kontakty a umístění
Studijní kontakt
- Jméno: Feng-Ming Hsu, M.D., Ph.D.
- Telefonní číslo: 67061 +886-23123456
- E-mail: hsufengming@ntuh.gov.tw
Studijní místa
-
-
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Taichung, Tchaj-wan
- China Medical University Hospital
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Kontakt:
- Study Contact
- Telefonní číslo: 17450 +886-42205-2121
- E-mail: 094872@tool.caaumed.org.tw
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Vrchní vyšetřovatel:
- Chun-Ru Chien, M.D., Ph.D.
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Taipei, Tchaj-wan, 100229
- National Taiwan University Hospital
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Kontakt:
- Study Contact
- Telefonní číslo: 262643 +886-22312-3456
- E-mail: dr.hsufm@gmail.com
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Vrchní vyšetřovatel:
- Chao-Lin Tsai, M.D., Ph.D.
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Taipei, Tchaj-wan, 106037
- National Taiwan University Cancer Center
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Kontakt:
- Study Contact
- Telefonní číslo: 231600 +886-22322-0322
- E-mail: A01450@ntucc.gov.tw
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Vrchní vyšetřovatel:
- Feng-Ming Hsu, M.D., Ph.D.
-
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
- Starší dospělý
Přijímá zdravé dobrovolníky
Popis
Inclusion Criteria:
- Thymic epithelial tumor, including thymoma or thymic carcinoma, confirmed by pathology.
- Received radical thymothymectomy.
- Masaoka-Koga stage I to III disease with an indication for postoperative radiotherapy.
- Age >= 18 years.
- Karnofsky performance status >= 70%.
- Life expectancy >= 1 year.
- Sufficient bone marrow reserve, renal function, and liver function within 90 days prior to registration, defined as: white blood cell count >= 2000/mm3; platelet count >= 50,000/mm3; hemoglobin >= 8 g/dL; serum creatinine <= 2.0 mg/dL or estimated glomerular filtration rate >= 30 mL/min; AST/ALT <= 2.5 times the upper limit of normal.
- Women of childbearing potential must have a negative qualitative serum or urine pregnancy test within 14 days prior to study entry.
- Able to comply with study procedures and follow-up schedules and willing to provide study-specific informed consent.
Exclusion Criteria:
- Prior radiotherapy to the thorax.
- Severe active comorbidities that, in the judgment of the investigator, make the patient inappropriate for study entry, interfere with safety or adverse event assessment, or limit compliance with study requirements, including: uncontrolled active infection requiring intravenous antibiotics at registration; transmural myocardial infarction <= 6 months prior to registration; unstable angina or congestive heart failure requiring hospitalization <= 6 months prior to registration; life-threatening uncontrolled clinically significant cardiac arrhythmias; hepatic insufficiency resulting in clinical jaundice and/or coagulation defects; chronic obstructive pulmonary disease exacerbation or other respiratory illness requiring hospitalization or precluding study therapy at registration; uncontrolled psychiatric disorder.
- Planned receipt of another investigational treatment during radiotherapy.
- Planned concurrent chemotherapy during radiotherapy. Prior induction or neoadjuvant chemotherapy, or planned sequential adjuvant chemotherapy after adjuvant radiotherapy, is allowed.
- Pregnant or breastfeeding women.
- Women of childbearing potential and sexually active male participants who are unwilling or unable to use medically acceptable contraception during radiotherapy and for 3 weeks after completing treatment.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: N/A
- Intervenční model: Přiřazení jedné skupiny
- Maskování: Žádné (otevřený štítek)
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
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Experimentální: Hypofractionated Adjuvant Radiation Therapy
Participants receive hypofractionated adjuvant radiotherapy after radical thymothymectomy.
Photon therapy or proton therapy is selected by shared decision-making between the participant and treating radiation oncologist.
|
Base regimen of 40 Gy (RBE) in 15 fractions or 42.5 Gy (RBE) in 16 fractions.
Optional tumor-bed boost of 10 Gy (RBE) in 4 fractions or 16 Gy (RBE) in 6 fractions for R2 macroscopic residual disease may be delivered at investigator discretion if normal tissue constraints are met.
Radiation is delivered using Proton pencil-beam scanning IMPT.
Base regimen of 40 Gy in 15 fractions or 42.5 Gy in 16 fractions.
Optional tumor-bed boost of 10 Gy in 4 fractions or 16 Gy in 6 fractions for R2 macroscopic residual disease may be delivered at investigator discretion if normal tissue constraints are met.
Treatment is delivered by Photon IMRT/VMAT/RapidArc techniques.
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Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
5-year local control rate
Časové okno: 5 years after start of radiotherapy
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Local control is defined as absence of radiologically or pathologically confirmed tumor recurrence within the original tumor bed or adjacent mediastinal region.
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5 years after start of radiotherapy
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Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Progression-free survival
Časové okno: Up to 5 years after start of radiotherapy
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Time from start of radiotherapy to first documented disease progression, including local, regional, or distant progression, or death from any cause.
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Up to 5 years after start of radiotherapy
|
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Overall survival
Časové okno: Up to 5 years after start of radiotherapy
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Time from start of radiotherapy to death from any cause.
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Up to 5 years after start of radiotherapy
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Treatment-related adverse events
Časové okno: From treatment start through 5 years of follow-up
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Acute and late treatment-related adverse events graded using CTCAE version 6.0, including grade 2 or higher and grade 3 or higher events, with attention to radiation pneumonitis, esophagitis, and cardiac events.
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From treatment start through 5 years of follow-up
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Health-related quality of life
Časové okno: Baseline and 1, 3, 6, 12, 18, and 24 months after radiotherapy
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EORTC QLQ-C30 Taiwanese Mandarin version scores, transformed to a 0 to 100 scale according to EORTC guidelines.
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Baseline and 1, 3, 6, 12, 18, and 24 months after radiotherapy
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Cardiac and pulmonary function changes
Časové okno: Baseline through 5 years after radiotherapy
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Changes in pulmonary function tests, cardiac sonography, and electrocardiography from baseline to post-treatment follow-up time points.
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Baseline through 5 years after radiotherapy
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Patterns of failure after disease progression
Časové okno: Up to 5 years after start of radiotherapy
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Patterns of disease failure after progression, including local, regional, distant, pleural, or pericardial recurrence patterns as assessed by protocol-specified imaging and clinical review.
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Up to 5 years after start of radiotherapy
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Exploratory comparison of photon and proton therapy outcomes
Časové okno: Up to 5 years after start of radiotherapy
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Exploratory comparison of baseline characteristics, local control, survival, toxicity, quality of life, cardiopulmonary function, and dosimetric endpoints between patients treated with photon therapy and proton therapy.
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Up to 5 years after start of radiotherapy
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Spolupracovníci a vyšetřovatelé
Spolupracovníci
Vyšetřovatelé
- Studijní židle: Feng-Ming Hsu, M.D., Ph.D., National Taiwan University Cancer Center and National Taiwan University Hospital
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Odhadovaný)
Primární dokončení (Odhadovaný)
Dokončení studie (Odhadovaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
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