- with a significant irradiation dose to the breast (Irradiation that delivered at least 10 Gy on at least part of the breast (v 5> 10 Gy) or on the mammary bud (v 100> 10 Gy) - (centrally validated dose) or received TBI (Total Body Irradiation)> 8 Gy according to a bi-fractioned scheme or> 6 Gy in single dose)