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

A Small Study Raises Big Hopes That Gene-Editing Can Treat Blood Diseases

By
Sy Mukherjee
Sy Mukherjee
Down Arrow Button Icon
By
Sy Mukherjee
Sy Mukherjee
Down Arrow Button Icon
November 19, 2019, 5:18 PM ET

This is the web version of Brainstorm Health Daily, Fortune’s daily newsletter on the top health care news. To get it delivered daily to your in-box, sign up here.

Good afternoon, readers.

Sometimes, a small study can raise big expectations—especially in the nascent industry of gene-editing to treat serious diseases.

Such is the case for CTX001, a closely-watched therapy from upstart biotech CRISPR Therapeutics and its much larger partner, rare disease specialist Vertex Pharmaceuticals, that was developed using CRISPR gene-editing technology.

The early-stage trial in question treated just two—yes, two—patients with the blood disorders sickle cell disease and beta-thalassemia, respectively. But the companies found the initial results so compelling that, even at this preliminary juncture, they decided to share some of the information.

“The data we announced today are remarkable and demonstrate that CTX001 has the potential to be a curative Crispr/Cas9-based gene-editing therapy for people with sickle-cell disease and beta-thalassemia,” said Vertex CEO Jeffrey Leiden in a statement.

Just what did the data show? For one, the patient with beta-thalassemia (which can cause severe anemia) went from requiring more than 16 blood transfusions per year before treatment to none nine months after treatment.

The patient with sickle cell disease had zero “vaso-occlusive crises” (incidents where the warped blood cells caused by sickle cell can lead to severe pain and obstructions) four months after treatment. That individual had been experiencing about a half dozen incidents every year prior to receiving CTX001.

It’s always prudent to be cautious about these early-stage results, no matter how impressive they sound. But several analysts, including from RBC Capital Markets, sounded cautious optimism.

Investors cheered, too. Shares of Vertex (a $50 billion-plus market value company) rose more than 2% in Tuesday trading, while shares of CRISPR Therapeutics spiked nearly 17%.

Read on for the day’s news.

Sy Mukherjee
sayak.mukherjee@fortune.com
@the_sy_guy

DIGITAL HEALTH

The Fortune Businessperson of the Year who embraces the robots. Fortune released its latest Businessperson of the Year list this morning (you can peruse the entire thing here, especially if you want to find out who took the number one spot). But of the 20 extraordinary businesspeople who made this year's cut, one may stand out to Brainstorm Health readers: Gary Guthart, CEO of Intuitive Surgical, the robotic surgery giant that doesn't appear to show any signs of diminished growth despite a growing cadre of competitors. Here's why he made the list. (Fortune)

INDICATIONS

China's drug regulation reforms prompt shift in Novartis' strategy. Recent regulatory reforms in China have sped up drug approvals in the country so rapidly that pharmaceutical giant Novartis is shifting its focus there from early-stage discovery to later-stage development. "We have decided to focus our R&D activities in Shanghai on expanding the scale and scope of our early clinical development and later stage clinical trial operations to accelerate the development of new medicines," said Novartis in a statement. "As a result, we will exit early discovery research at the site." (Reuters)

THE BIG PICTURE

Philippines latest nation to plan crackdown on e-cigs (and a potentially harsh one). The Philippines are joining India, China, and others in cracking down on vaping and e-cigarette use. President Rodrigo Duterte announced he would be proposing a ban after a case of lung disease related to e-cig use. He also went a step further, warning the country may arrest people who vape in the future. (NPR)

REQUIRED READING

A.I. Will Obliterate These Jobs by 2030, by Jonathan Vanian

WeWork's Legal Floodgates May Have Just Opened, by Rey Mashayekhi

Sanofi's Chief Executive: 'There's Never Been a Better Time to Be a CEO', by Emma Hinchliffe

How Johnson & Johnson Is Dealing With Its Trust Issues, by Erika Fry

Sign up for other Fortune newsletters.

IF YOU LIKE THIS EMAIL...

Share today’s Brainstorm Health with a friend.

Did someone share this with you? Sign up here. For previous editions, click here.

For even more, check out raceAhead, Fortune's daily newsletter on culture in corporate America. Sign up here.

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

Latest in Newsletters

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
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • 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
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 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.


Most Popular

placeholder alt text
Retail
Trump just declared Christmas Eve a national holiday. Here’s what’s open and closed
By Dave SmithDecember 24, 2025
14 hours ago
placeholder alt text
Personal Finance
Financial experts warn future winner of the $1.7 billion Powerball: Don't make these common money mistakes
By Ashley LutzDecember 23, 2025
1 day ago
placeholder alt text
Success
The average worker would need to save for 52 years to claw their way out of the middle class and be classified as wealthy, new research reveals
By Orianna Rosa RoyleDecember 23, 2025
1 day ago
placeholder alt text
Success
'When we got out of college, we had a job waiting for us': 80-year-old boomer says her generation left behind a different economy for her grandkids
By Mike Schneider and The Associated PressDecember 23, 2025
1 day ago
placeholder alt text
Law
Disgraced millennial Frank founder Charlie Javice hits JPMorgan with $74 million legal bill, including $530 in gummy bears and $347 'afternoon snack'
By Sasha RogelbergDecember 23, 2025
1 day ago
placeholder alt text
Economy
Obama's former top economic advisor says he feels 'a tiny bit bad' for Trump because gas prices are low, but consumer confidence is still plummeting 
By Sasha RogelbergDecember 24, 2025
7 hours ago

Latest in Newsletters

NewslettersMPW Daily
Your predictions for women, AI, and the workplace in 2026
By Emma HinchliffeDecember 24, 2025
9 hours ago
Vanguard CIO Nitin Tandon.
NewslettersCIO Intelligence
How investment giant Vanguard’s CIO is placing big tech bets today to create the AI digital advisor of tomorrow
By John KellDecember 24, 2025
10 hours ago
NewslettersCFO Daily
How AI is redefining finance leadership: ‘There has never been a more exciting time to be a CFO’
By Sheryl EstradaDecember 24, 2025
13 hours ago
NewslettersCEO Daily
Expedia CEO Ariane Gorin on the fight to ensure AI doesn’t turn her brands into invisible pipes consumers never see
By Diane BradyDecember 24, 2025
14 hours ago
NewslettersTerm Sheet
The AI startups founders and VCs say could be acquisition targets in 2026
By Allie GarfinkleDecember 24, 2025
15 hours ago
Thierry Breton, former European Commissioner for the Internal Market, in Paris on June 13, 2025. (Photo: Thomas Samson/AFP/Getty Images)
NewslettersFortune Tech
U.S. denies visas for five Europeans, alleging American censorship
By Andrew NuscaDecember 24, 2025
15 hours ago