Accelerated Partial Breast Irradiation with Intensity Modulation Radiotherapy (MRT) after Breast Conservative Surgery

Accelerated Partial Breast Irradiation with Intensity Modulation Radiotherapy (MRT) after Breast Conservative Surgery - Accelerated Partial Breast Irradiation with IMRT

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000038308

Enrollment

Registered

2020-01-01

Start date

2019-12-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Interventions

Accelerated Partial Breast Irradiation (APBI)

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1) Elderly patients aged between 50 and 80 years 2) Eastern Cooperative Oncology Group performance status of 0 or 1 3) Pathological diameter of invasive or non invasive compon ent =<2 cm 4) Invasive carcinoma or non invasive carcinoma 5) Single tumor 6) Positive estrogen receptor, 7) Distance between the surgical edge and cancer cell =>2 mm, 8) No axillary lymph node metastasis and 9) Written informed consent

Exclusion criteria

Exclusion criteria: Active second malignancy, uncontrolled infection, pregnanc y, mental disorder, uncontrolled diabetes mellitus, interstitial pneumonitis, collagen vascular diseases, heart failure and pr evious history of radiofrequency ablation.

Design outcomes

Primary

Measure	Time frame
The rate of 2-year adverse events of grade 2 or worse	—

Countries

Japan

Contacts

Public ContactJiro Kawamori

St Luke's International Hospital Department of Radiation Oncology

jirokawa@luke.ac.jp03-3541-5151

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026