Here you can find the unique classifications, their significance, and why they matter more than you might think.
Extremely rare, with fewer than 50 known cases worldwide. Lacks all Rh antigens, making it universally compatible
Extremely rare, with fewer than 50 known cases worldwide. Lacks all Rh antigens, making it universally compatible
Common in African populations but rare in other ethnicities. Provides resistance against certain types of malaria
Extremely rare in most populations, but more common among indigenous peoples of the Americas and East Asians
Relatively rare, occurring in about 2% of Caucasians and less than 1% of other ethnic groups
Uncommon in most populations, with frequency varying by ethnicity. Exact prevalence is not well-documented