Personalization of Breast Radiotherapy According to Loco-regional Recurrence Risk and Toxicity Probability

"IMRT radiotherapy on whole breast according to the investigator's decision among:~* Moderate whole breast hypofractionated RT according to the START B schema with Fixed Field IMRT Technique: 40.05 Gy in 15 daily fractions over 3 weeks and a Sequential boost (+ 16 Gy/8 fr) or (+13.5/5 fr) if applicable.~* Extreme whole breast hypofractionated RT according to :~ * The FAST schema: Once-a-week ultra-HypoRT with Fixed Field IMRT Technique, 28.5 Gy in 5 fractions in 5 weeks~ * The FAST-Forward schema: Very accelerated course of HypoRT with Fixed Field IMRT Technique, 26 Gy in 5 fractions in 5 consecutive days"

"Breast radiotherapy according to the investigator's decision among:~* External partial VMAT: 40 Gy in 15 fractions to the partial breast only (tumorectomy bed).~* Exclusive Brachytherapy: 30.1 Gy in 7 fractions or 32.0 Gy in 8 fractions of high-dose-rate brachytherapy in 5 days or as 50 Gy of pulsed-dose-rate brachytherapy over 5 treatment days.~* Whole Breast Normo fractionated IMRT with Fixed Field IMRT Technique: 50 Gy in 25 daily fractions over 5 weeks +/- Sequential (+ 16 Gy/8fr) or SIB (60 Gy/25 fr) treatment for boost if applicable."

"Whole breast and nodes Hypofractionated VMAT and a localized simultaneous boost according to the HypoG01 schema protocol:~VMAT Technique, 42.3 Gy in 18 fractions on all target volume on 3.5 weeks +/- SIB boost if need (52.2Gy in 18 fractions)."

"Breast radiotherapy based on available clinical trials:~\- Whole Breast and Nodes Hypofractionated VMAT with adaptive treatment (margin reduction): HypoG01 Schema with VMAT Technique, 42.3 Gy in 18 fractions on all target volume over 3.5 weeks +/- SIB boost if need (52.2Gy in 18 fr) In case of patient refusal or technique unavailable, a standard treatment available in the center for this indication will be delivered."