• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

Social Security unraveling: 7,100 workers sacked, performance metrics retired, disability claims falling

2

Erin Brockovich, the activist who defeated a utility giant and inspired a Julia Roberts film, is pushing data centers to be more transparent

3

'Where we are today is frightening': a Pulitzer-winning historian sees a doomsday scenario involving China and the national debt

1

Social Security unraveling: 7,100 workers sacked, performance metrics retired, disability claims falling

2

Erin Brockovich, the activist who defeated a utility giant and inspired a Julia Roberts film, is pushing data centers to be more transparent

3

'Where we are today is frightening': a Pulitzer-winning historian sees a doomsday scenario involving China and the national debt
HealthBrainstorm Health

Rakuten’s CEO Is Developing a Brilliant New Cancer Treatment: Light

By
Sy Mukherjee
Sy Mukherjee
Down Arrow Button Icon
By
Sy Mukherjee
Sy Mukherjee
Down Arrow Button Icon
April 3, 2019, 8:02 PM ET

Some types of innovation are fueled by curiosity. Others stem from the profit motive. (In many cases, it’s a bit of both). For Rakuten CEO Mickey Mikitani, the quest for groundbreaking science was born of heartbreak.

Mikitani’s father’s pancreatic cancer diagnosis (and eventual death) spurred the serial entrepreneur to form a biotechnology outfit centered on “photoimmunotherapy.” In simpler terms, Rakuten Aspyrian is attempting to treat cancer with literal light.

That journey began on the heels of the elder Mikitani’s diagnosis. “One of my friends called me, who was also a friend of my father’s… and said, by the way, my cousin is doing this new project, trying to cure cancer with light,” Mikitani explained during a one-on-one interview at the Fortune Brainstorm Health conference on Wednesday. “I was like, this must be a joke. But I was desperate.”

So how does the technology work? It involves infusing cancer patients with something called an “antibody-drug conjugate.” (that’s a fancy way of saying antibodies which can bind to specific spots in the body, such as tumors) that are connected to cancer-killing drugs. Next, the photoimmunotherapy process uses near-infrared light, transmitted via catheters or other methods, to initiate rapid cancer-killing activity at the tumor site.

The company’s photoimmunotherapy treatments are currently in late-stage clinical trials for head and neck cancers, with earlier stage studies in other kinds of cancers planned for the near future. “We have seen some [positive] cases which were very difficult to see with the traditional approach,” said Mikitani.

With so many kinds of more-established approaches to cancer treatment on the market, why would Mikitani choose this route? “I was ignorant enough to bet on this one,” he explained.

For more coverage of Fortune’s Brainstorm Health conference, click here. For news delivered daily to your inbox, subscribe to Fortune’s Brainstorm Health Daily newsletter.

About the Author
By Sy Mukherjee
See full bioRight Arrow Button Icon

Latest in Health

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Health

Create Creatine Gummies Review (2026): Tasted and Tested by Experts
HealthDietary Supplements
Create Creatine Gummies Review (2026): Tasted and Tested by Experts
By Christina SnyderJune 2, 2026
22 hours ago
Transparent Labs Probiotics Review (2026): RD Reviewed
HealthDietary Supplements
Transparent Labs Probiotics Review (2026): RD Reviewed
By Emily PharesJune 2, 2026
24 hours ago
The Best Iodine Supplements (2026): Expert Tested and Reviewed
HealthDietary Supplements
The Best Iodine Supplements (2026): Expert Tested and Reviewed
By Emily PharesJune 2, 2026
1 day ago
The Best Macro Tracking Apps of 2026: Apps to Help You Hit Your Goals
HealthDietary Supplements
The Best Macro Tracking Apps of 2026: Apps to Help You Hit Your Goals
By Christina SnyderJune 1, 2026
2 days ago
The elderly and injured are using robots as home care support to help them get around their home
Innovationrobot
The elderly and injured are using robots as home care support to help them get around their home
By The Associated Press and Matt O'BrienJune 1, 2026
2 days ago
Experimental pill nearly doubles survival time for people with advanced pancreatic cancer. ‘I actually started crying’
HealthHealth
Experimental pill nearly doubles survival time for people with advanced pancreatic cancer. ‘I actually started crying’
By Lauran Neergaard and The Associated PressMay 31, 2026
3 days ago

Most Popular

Social Security unraveling: 7,100 workers sacked, performance metrics retired, disability claims falling
North America
Social Security unraveling: 7,100 workers sacked, performance metrics retired, disability claims falling
By Katie Savin, Callie Freitag, Matthew Borus and The ConversationJune 2, 2026
1 day ago
Erin Brockovich, the activist who defeated a utility giant and inspired a Julia Roberts film, is pushing data centers to be more transparent
Environment
Erin Brockovich, the activist who defeated a utility giant and inspired a Julia Roberts film, is pushing data centers to be more transparent
By Marco Quiroz-GutierrezJune 1, 2026
2 days ago
'Where we are today is frightening': a Pulitzer-winning historian sees a doomsday scenario involving China and the national debt
Banking
'Where we are today is frightening': a Pulitzer-winning historian sees a doomsday scenario involving China and the national debt
By Nick LichtenbergJune 2, 2026
1 day ago
Cognizant CEO says AI is remaking middle managers into player-coaches who can 'both  execute and develop others'
Newsletters
Cognizant CEO says AI is remaking middle managers into player-coaches who can 'both execute and develop others'
By Diane BradyJune 2, 2026
1 day ago
Current price of oil as of June 2, 2026
Personal Finance
Current price of oil as of June 2, 2026
By Joseph HostetlerJune 2, 2026
1 day ago
The Iran conflict has disrupted oil supply. Gulf states are now looking to multi-billion-dollar investments in renewables 
Energy
The Iran conflict has disrupted oil supply. Gulf states are now looking to multi-billion-dollar investments in renewables 
By Melissa HancockJune 1, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.