Jane asked the 37-year-old star to take the test, which led to her finding out she carried the BRCA1 cancer gene, that gave her an 87 per cent chance of developing breast cancer and a 50 per cent risk of ovarian cancer, reported National Enquirer.
"Basically, Brad's mom helped save Angie's life. When Angie told Jane that she was considering having genetic testing, Jane said to do whatever she thought was best for the children's sake," a source said.
Jane had the heartfelt conversation with Angelina, who has six children, Maddox, 11, Pax, nine, Zahara, eight, Shiloh, six, and four-year-old twins Knox and Vivienne, with husband Brad, while she was holidaying with her husband Bill and their family at Christmas last year.
The group were staying at fashion designer Donna Karan's luxury abode on Parrot Cay in the Turks and Caicos Islands, and while Jane is remaining tight-lipped about the specific details of the conversation, she is very glad Angelina, whose mother Marcheline died of ovarian cancer at 56, had the test done.