Distribution of ABO and D antigen expression in Yogyakarta, Java Island: a pioneer large-scale study in Indonesia.

Objective: Here, we sought to report ABO and D antigen distribution in blood donors from Yogyakarta, Java Island, Indonesia. Phenotype data (ABO/D) from donors who donated blood between January 1, 2018, and December 31, 2023, at the Yogyakarta Blood Donor Unit were extracted from the blood donor registry, and phenotype frequency was calculated subsequently.

Results: In the 245,307 blood donors collected over six years, ABO phenotype frequency: O (frequency: 38.