By Maggie Shiels
Technology Reporter, BBC News, Silicon Valley
"I really like people and I really like sick people," said Ms Wojcicki.
"It's a really acute moment in someone's life and you want to help them. I have always been interested in health care and doing something that is dramatic."
Ms Avey is similarly motivated and was inspired to do good by her parents.
"I grew up in South Dakota where my dad was a Lutheran minister and my mom was a nurse," she said.
"Between them the worked at a micro scale and helped people in their own community and that's what is so great about the web that we can do it in a much bigger way where we are not limited by our geography."
Ms Wojcicki's inspiration comes from her husband, her father, who is a particle physicist and a mother, a journalism professor.
"My husband is incredibly driven to change the world and has stayed true to that. [...]
Changing the world is easy. Changing the world for the better is almost impossible. Invent anything, and it will be abused. These Valley girls invented personal DNA sequencing kit. Oh, hooray...
BTW her husband is Sergey Brin, the co-founder of Google.
What a sickening story this is.