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A phase I/II study of proton beam therapy for early breast cancer evaluating safety and effectiveness

A phase I/II study of proton beam therapy for early breast cancer evaluating safety and effectiveness - A phase I/II study of proton beam therapy for early breast cancer

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000017579
Enrollment
24
Registered
2015-05-15
Start date
2015-05-15
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

Proton beam therapy 62.4 GyE/26 fractions

Sponsors

Medipolis Proton Therapy and Research Center
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1) UICC-TNM classification stage I (equal or less than 1.5 cm in diameter) breast cancer. 2) Mammographicaly visible tumor without calcification. 3) Pathologically invasive ductal carcinoma. 4) No massive lymphovascular invasion. 5) Estrogen receptor positive, favor of HER2 negative. 6) Age 40-70 years old. 7) Hight </= 175 cm, body weight </= 70 kg. 8) Favor of distance to skin or rib >/= 1 cm. 9) Negative lymph node metastasis by sentinel lymph node sampling. 10) No distant metastasis. 11) Performance status 0-1. 12) Written informed consent. 13) Phase I is clinical trial. 14) Phase II is cost burden. 15) Salvage surgery will be required if recurrence is observed.

Exclusion criteria

Exclusion criteria: 1) History of previous radiotherapy to the breast. 2) History of previous surgery/chemotherapy to the breast. 3) DCIS/LCIS 4) Massive intra-ductal spread. 5) Having infectious disease. 6) Having collagen disease or infectios skin disease. 7) Diabetes. 8) Pregnancy. 9) Other malignant disease. 10) Medically, psycholgicaliy or other reason who are not suitable for candidate by the physician.

Design outcomes

Primary

MeasureTime frame
Adverse events of normal tissue

Secondary

MeasureTime frame
location of local recurrence, duration of extra-breast recurrence, survival duration, cosmesis

Countries

Japan

Contacts

Public ContactTakeshi Arimura

Medipolis Proton Therapy and Research Center Proton Radiation Oncology Division

mptrc-ask@medipolis.org0993-23-5188

Outcome results

None listed

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