CRIB Blood Group

July 31, 2025

A new blood group CRIB, previously unidentified anywhere in the world, has been discovered in a South Indian woman from Kolar district in Karnataka.

About CRIB Blood Group:

  • It is part of the Cromer (CR) blood group system and, in recognition of its origin, has been officially named CRIB, with ‘CR’ representing ‘Cromer’ and ‘IB’ standing for ‘India’, ‘Bangalore’.
  • This historic announcement was made at the 35th Regional Congress of the International Society of Blood Transfusion (ISBT) held in Milan, Italy.
  • It is a new blood group, previously unidentified anywhere in the world.
  • After ten months of research and molecular testing, international experts identified a new antigen in the Cromer (CR) blood group system.
  • The blood group nomenclature is decided by the International Society of Blood Transfusion.
  • Identifying new antigens like CRIB enhances global transfusion safety, improves compatibility testing, and lays the foundation for better donor matching in future medical emergencies.
  • Cromer blood group system involves 12 high-prevalence and 3 low-prevalence antigens on decay-accelerating factor (DAF).

What are rare blood types?

  • Rare blood type is when a person’s blood type is present in only 0.1% of the population.
  • If a Rare type patient develops an antibody, they can only receive blood from another Rare Type donor.
  • It poses serious challenges in emergency transfusions, organ transplants, and complex surgeries.

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