- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT07657442
Risk-Stratified Hypofractionated Radiotherapy After Breast-Conserving Surgery for Early Breast Cancer
A Prospective Study of Risk-Stratified Hypofractionated Radiotherapy After Breast-Conserving Surgery for Early Breast Cancer
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Eligible patients with early breast cancer who have undergone breast-conserving surgery will be stratified into a high-risk group or a low-risk group according to the presence or absence of predefined high-risk factors.
Patients in the high-risk group will receive whole-breast irradiation with a simultaneous integrated boost to the tumor bed. The prescribed dose will be 36 Gy in 15 fractions over 3 weeks to the whole breast and 48 Gy in 15 fractions over 3 weeks to the tumor bed.
Patients in the low-risk group will receive partial-breast irradiation. Two hypofractionated schedules may be used: 40.05 Gy in 15 fractions over 3 weeks or 26 Gy in 5 fractions over 1 week.
Patients will be followed during and after radiotherapy to evaluate treatment efficacy, recurrence rates, and acute and late radiation-related toxicities.
Studietyp
Inskrivning (Beräknad)
Fas
- Inte tillämpbar
Kontakter och platser
Studiekontakt
- Namn: Shu-Lian Wang, MD
- Telefonnummer: 8610-87788803
- E-post: wangsl@cicams.ac.cn
Studieorter
-
-
Beijing Municipality
-
Beijing, Beijing Municipality, Kina, 100021
- Cancer Hospital, Chinese Academy of Medical Sciences
-
Kontakt:
- Shu-Lian Wang
- Telefonnummer: 8610-87788803
- E-post: wangsl@cicams.ac.cn
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Beskrivning
Inclusion Criteria:
- ECOG performance status score of 0 to 2.
- Pathologically confirmed breast cancer, including invasive carcinoma or ductal carcinoma in situ.
- Clinical stage cT0-2N0M0.
- Underwent breast-conserving surgery.
- Negative surgical margins greater than 2 mm.
Exclusion Criteria:
- Regional lymph node metastasis.
- Distant metastasis.
- Bilateral breast cancer.
- Prior thoracic radiotherapy.
- Life expectancy of less than 5 years.
- Lactating or pregnant women.
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Behandling
- Tilldelning: Icke-randomiserad
- Interventionsmodell: Faktoriell uppgift
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: Arm 1: High-risk group
Patients who undergo upfront breast-conserving surgery will be assigned to the high-risk group if any of the following high-risk factors are present:
Patients who receive neoadjuvant chemotherapy followed by breast-conserving surgery will be assigned to the high-risk group if any of the following high-risk factors are present:
|
Whole-breast irradiation: 36 Gy in 15 fractions; Tumor bed boost: 48 Gy in 15 fractions
|
|
Aktiv komparator: Arm 2: Low-risk group
Patients who undergo upfront breast-conserving surgery will be assigned to the low-risk group if they meet either of the following criteria: ① Ductal carcinoma in situ (DCIS): age 40 years or older, unifocal disease on breast MRI, tumor size 3 cm or smaller, estrogen receptor-positive disease, and low-, intermediate-, or high-grade disease. ② Invasive carcinoma, including invasive ductal carcinoma, mucinous carcinoma, papillary carcinoma, or tubular carcinoma: age 40 years or older, unifocal disease on breast MRI, tumor size 3 cm or smaller, grade 1 to 3 disease, no lymphovascular invasion, and estrogen receptor-positive disease. Patients who receive neoadjuvant chemotherapy followed by breast-conserving surgery will be assigned to the low-risk group if all of the following criteria are met: Age 40 years or older, unifocal disease on pretreatment breast MRI, pretreatment core needle biopsy showing invasive ductal carcinoma, and pathologic stage ypT0/isN0. |
Partial-breast irradiation: 40.05 Gy in 15 fractions or 26 Gy in 5 fractions
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Local recurrence rate
Tidsram: Five years
|
Ipsilateral breast recurrence rate
|
Five years
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Disease-free survival rate
Tidsram: Five years
|
Disease-free survival rate
|
Five years
|
|
Radiation-related adverse events
Tidsram: Five years
|
Adverse events
|
Five years
|
Samarbetspartners och utredare
Studieavstämningsdatum
Studera stora datum
Studiestart (Beräknad)
Primärt slutförande (Beräknad)
Avslutad studie (Beräknad)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- NCC25/095-0095
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