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Radiation

APBI: 30 Gy for Breast Cancer (OPAR Trial)

Phase 2
Waitlist Available
Led By Do-Hoon Kim, MD
Research Sponsored by Ontario Clinical Oncology Group (OCOG)
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up ongoing throughout study up to 5 years
Awards & highlights

OPAR Trial Summary

This trial is testing a new type of radiation therapy for breast cancer patients who have had surgery to remove the tumor. The new therapy is called 3DCRT APBI and the patients will be randomly assigned to one of two doses of radiation. The trial will follow the patients for 5 years to see how effective the new therapy is.

Eligible Conditions
  • Breast Cancer
  • Ductal Carcinoma

OPAR Trial Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~ongoing throughout study up to 5 years
This trial's timeline: 3 weeks for screening, Varies for treatment, and ongoing throughout study up to 5 years for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Adverse cosmetic outcome using the EORTC Breast Cosmetic Rating System
Secondary outcome measures
Cosmetic deterioration (defined as any adverse change in the global cosmetic score)
Disease free survival (DFS)
Ipsilateral breast tumour recurrence (IBTR)
+2 more

OPAR Trial Design

2Treatment groups
Experimental Treatment
Group I: APBI: 30 GyExperimental Treatment1 Intervention
Radiotherapy of 3 Dimensional Conformal Radiation Therapy (3DCRT) Accelerated Partial Breast Irradiation (APBI) 30 Gy in 5 daily fractions of 6 Gy
Group II: APBI: 27.5 GyExperimental Treatment1 Intervention
Radiotherapy of 3 Dimensional Conformal Radiation Therapy (3DCRT) Accelerated Partial Breast Irradiation (APBI) 27.5 Gy in 5 daily fractions of 5.5 Gy
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
APBI: 27.5 Gy
2016
Completed Phase 2
~280
APBI: 30 Gy
2016
Completed Phase 2
~280

Find a Location

Who is running the clinical trial?

Canadian Breast Cancer FoundationOTHER
25 Previous Clinical Trials
8,003 Total Patients Enrolled
14 Trials studying Breast Cancer
6,473 Patients Enrolled for Breast Cancer
Ontario Clinical Oncology Group (OCOG)Lead Sponsor
62 Previous Clinical Trials
41,605 Total Patients Enrolled
15 Trials studying Breast Cancer
8,838 Patients Enrolled for Breast Cancer
Do-Hoon Kim, MDPrincipal InvestigatorJuravinski Cancer Centre

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Is it still possible to join this medical trial as a participant?

"In accordance with the clinicaltrials.gov database, this investigation is not currently enrolling participants. The trial was first listed on May 1st 2016 and last edited April 4th 2022. Unfortunately there are no current openings for this particular medical research project; however 2600 other trials have active recruitment periods open at present."

Answered by AI

What is the scope of this research project in terms of its geographic presence?

"Presently, this medical trial is running out of 10 hospitals and research centres. The list includes Barrie, Hamilton, and Quebec City in addition to 7 other cities. To reduce travel commitments it would be prudent to select the location that's closest to you should you decide to join the study."

Answered by AI

What risks have been associated with APBI: 30 Gy for individuals?

"Considering the lack of efficacy evidence and some data in support of safety, APBI: 30 Gy was assigned a rating of 2."

Answered by AI
~31 spots leftby Apr 2025