EBRO 2017

Radiation Boost for Ductal Carcinoma In Situ (DCIS) After Whole Breast Radiation Therapy (WBRT) Improves Local Control Moran MS, et al, JAMA Oncol, 2017

Results : Median f/u time =9 years

• Total n= 4131 patients Median age 56 years • No boost = 1470 (35.6%) • Boost = 2661 (64.4%)

Exceeded sample size estimation by 39%

• Margin+ (ink on tumor) =4.1% (n=168)

• Grade II/III component: 68% (n=2817)

• ER Status: Known 37% (n= 1538)

Moran et al, JAMA Oncol, 2017