3. Results
3.1. Frequency of G-6-PD mutations
A total of 106 enzymatically determined G-6-PD-deficient (b7.0 U/g Hb) neonate blood samples (94 males and 12 females)
were analyzed for the common G-6-PD gene mutations reported inthe Thai population.
As expected, G-6-PD Viangchan was the most frequent variant (63%), followed by G-6-PD Canton (13%) and G-6-
PD Mahidol (7%) (Table 1). G-6-PD Gaohe was not found in this study.
Among the 12 female G-6-PD-deficient samples, 6 cases
were heterozygotes, and the remaining were G-6-PD Viangchan homozygotes
(n = 5) and one compound heterozygote (Kaiping/Chinese-
5) (Table 2). Genotyping of 42 G-6-PD-normal samples (13
males and 29 females) revealed 8 heterozygotes (7 being G-6-PD
Viangchan and one G-6-PD Canton) (Table 2).