TROG Cancer Research
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TROG 03.05 (MA.20)

Primary sponsor: NCIC CTG
Collaborating group: TROG


Radiation Therapy in Treating Women Who Have Undergone Surgery for Early-Stage Invasive Breast Cancer


Radiotherapy to the breast reduces the risk of cancer coming back for women with early breast cancer. This international study will determine if treating a larger area with radiotherapy can further improve the results.

Final accrual

International: 1,822
TROG: 180

Trial chairpersons

International: Prof Timothy J. Whelan
TROG: A/Prof Boon Chua

Trial contact

Yvonne Murray


Study Chair talk on trial results (YouTube link)

Trial resources for TROG members

TROG 03.05 member page

We are thankful to our 14,500 patients who have participated in our research. Please continue the generous support.