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MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year

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MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year

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Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster

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Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place
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Exclusive: She had a cancer scare while working at NASA. Now she’s raised $6.8 million for a breast cancer screening startup backed by the CEO of Oura

Emma Hinchliffe
By
Emma Hinchliffe
Emma Hinchliffe
Most Powerful Women Editor
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Emma Hinchliffe
By
Emma Hinchliffe
Emma Hinchliffe
Most Powerful Women Editor
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September 30, 2025, 10:10 AM ET
Bailey Renger is the founder and CEO of BeSound.
Bailey Renger is the founder and CEO of BeSound. Courtesy of BeSound
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Bailey Renger was interning at NASA when, at 21, she had a cancer scare. “I had a solid mass, but they couldn’t tell me definitively whether or not it was malignant,” she recalls. She fought for more screening, but her insurance wouldn’t cover additional imaging.

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“Why can we see to the edges of the universe,” she wondered, “but it’s so difficult to see two-and-a-half centimeters inside the human body?”

Today, Renger, now 26, is launching BeSound, a breast screening ultrasound startup that aims to catch what mammograms miss or insurance won’t cover. The startup raised $6.8 million, Fortune is the first to report. Its investors include Overwater Ventures, Kindred Ventures, and Muse Capital, as well as Lux Capital and Tom Hale, the CEO of Oura.

Like other consumer health startups—from Oura to Prenuvo—BeSound aims to reach the savvy consumer who is eager to take their health into their own hands. “Bailey’s vision for BeSound is exactly the kind of founder-led innovation that moves healthcare forward,” Hale tells Fortune.

Bailey Renger is the founder and CEO of BeSound.
Courtesy of BeSound

But there are also some trends in traditional cancer screening that support this model. Breast cancer rates in women under 40 are increasing, but insurance still does not recommend or cover screening for most of those women. Mammograms are less effective at catching cancer for women with dense breast tissue (about 40 million women in the U.S.), meaning those women may need ultrasound imaging in addition to mammography. The FDA updated its mammography guidelines in 2023 to require facilities to notify patients if they have dense breasts. “The current infrastructure does not support 40 million women now coming in for an ultrasound scan every year,” Renger says. She sees BeSound as a “front door” to hospitals, doing initial screening and then sending patients to doctors for next steps.

The startup is launching with a location in Los Angeles, where it will cost $350 for a breast ultrasound. It’s aiming to improve the patient experience, cutting down on wait time for results after screening—with the help of AI. Eventually, Renger is interested in expanded to all forms of ultrasound-based imaging for women’s health.

Emma Hinchliffe
emma.hinchliffe@fortune.com

The Most Powerful Women Daily newsletter is Fortune’s daily briefing for and about the women leading the business world. Subscribe here.

ALSO IN THE HEADLINES

Charlie Javice was sentenced to seven years in prison. She had been convicted of defrauding JPMorgan with the sale of her financial aid in higher ed startup, Frank. CNN

A potential government shutdown comes with another risk. Following recent turmoil at the BLS, it could even further delay data about the economy, making it harder to understand the labor market at a pivotal moment. New York Times

Discontent is brewing in the WNBA. Three coaches (out of 13 teams in the league) have been penalized for remarks about officiating. Minnesota Lynx coach Cheryl Reeve was suspended for saying there needed to be a change in officiating at the league level, and two other coaches were fined for supporting her. Sports Illustrated

A top crypto regulator is stepping down. Adrienne Harris rebuilt New York's Department of Financial Services into "a regulator fit for the financial capital of the world." Fortune

The music industry clears the way for The Life of a Showgirl. Forty-one albums dropped a week before Taylor Swift's will this Friday—a sign that no one wants to go up against the superstar on the charts. USA Today

ON MY RADAR

Carol Burnett plays on The New Yorker

The misogynistic abuse toward Rory McIlroy's wife at the Ryder Cup is deeper than golf Glamour

Meet the 75-year-old powerlifter headed to world championships Guardian

PARTING WORDS

"The closest I came to making life was the closest I came to death. And I felt like I had stepped through this door, and it was just full of women, screaming."

— Florence Welch on suffering a miscarriage and ectopic pregnancy

This is the web version of MPW Daily, a daily newsletter for and about the world’s most powerful women. Sign up to get it delivered free to your inbox.
About the Author
Emma Hinchliffe
By Emma HinchliffeMost Powerful Women Editor
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Emma Hinchliffe is Fortune’s Most Powerful Women editor, overseeing editorial for the longstanding franchise. As a senior writer at Fortune, Emma has covered women in business and gender-lens news across business, politics, and culture. She is the lead author of the Most Powerful Women Daily newsletter (formerly the Broadsheet), Fortune’s daily missive for and about the women leading the business world.

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