In 2008, local philanthropist Diana Sun’s mother had surgery to remove a brain tumor, but it didn’t work. She soon was rushed to Hoag Hospital in Newport Beach, where she had a second brain surgery and spent three-plus weeks recovering.

The Suns thought enough of their experience with Hoag that today, 15 years later, they are donating $50 million toward what will be known as the Sun Family Campus at Hoag Hospital.

But, this time, the Hoag they’re helping to build is in Irvine.

The Suns’ gift is part of the hospital’s $1 billion Irvine expansion, which is slated to open in 2025 and include six buildings, 155 patient beds, eight operating rooms, two procedure rooms and 120,000 square feet of new facilities.