US EditionFrench scientists discover new blood type in Guadeloupe woman
FRANCE, JUN 20 – The new "Gwada negative" blood group results from a genetic mutation and is the only known case worldwide, discovered after unusual antibodies appeared during routine testing.
- The French Blood Establishment announced on June 21, 2025, the discovery of a new blood type in a woman from Guadeloupe, France.
- The discovery followed the first detection of a very unusual antibody in the patient’s blood during routine tests before surgery in 2011, with further analysis delayed by limited resources.
- In 2019, researchers solved the puzzle by employing advanced DNA sequencing techniques that revealed a specific genetic mutation, leading to the identification of the world’s 48th blood group system.
- An expert emphasized that this woman represents a unique and singular case worldwide, being the only individual whose blood is compatible with her own. The blood type was designated "Gwada negative" to reflect her Caribbean heritage.
- EFS emphasized that discovering new blood groups improves care for patients with rare blood types and Peyrard and colleagues hope to find others with the same blood group.
106 Articles
106 Articles
Scientists Discover a Completely New Blood Type
Researchers have confirmed a completely new blood type. Credit: Governo do Estado de São Paulo / CC BY 2.0 A newly discovered blood type has been identified in a 68-year-old woman from Guadeloupe, making her the only known person in the world with this rare classification. Scientists uncovered the unique case during routine testing, marking a major development in the ongoing study of human blood groups. The woman, who was living in Paris in 2011…
'She is the only person in the world compatible with herself' — scientists discover new blood type but it's unique to just one person from Guadeloupe
After years of study, scientists have discovered a new blood type in a woman from Guadeloupe. They're now searching for more people with the characteristic.
In France, researchers have discovered a new type of blood: until now, only one carrier known to have "gwada negatively" is known to have. The woman cannot donate or receive blood. The unusual type of blood had already been noticed during a routine examination in 2011 prior to surgery. As the French blood institute explained, a "very special" and "unknown" antibody was found in the patient's blood, but the technical possibilities for further inv…
French researchers have discovered an extremely rare blood type. So far, it has only been found in one woman worldwide.
Coverage Details
Bias Distribution
- 45% of the sources are Center
To view factuality data please Upgrade to Premium
