Frequencies of MNS Blood Group Antigens and Phenotypes in Southwestern Saudi Arabia.

In summary, this study reports the frequencies of the MNS antigens and phenotypes in Jazan Province, Saudi Arabia. The most common phenotype was M+N-S+s+, whereas the least observed phenotype was M+N-S-s-. The outcomes of this study may assist the blood banks in Jazan Province to establish an extended phenotyping protocol including the MNS antigens, in particular S and s antigens, to preclude any alloimmunization events.