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. 2019 Jun 24;18:209. doi: 10.1186/s12936-019-2841-8

Table 2.

Glucose-6-phosphate dehydrogenase (G6PD) genotype and phenotype and cytochrome P450 2D6 (CYP2D6) genotype and activity scores among RDT-positive participants screened and randomized; n (%)

Total RDT positives screened [n = 181] Randomized to primaquine [n = 70] Not randomized to primaquine [n = 70]
G6PD variant genotype
 A− 24 (14.0) 11 (16.7) 6 (9.0)
 A+ 38 (22.1) 9 (13.6) 17 (25.4)
 B 110 (64.0) 46 (69.7) 44 (65.7)
G6PD phenotype (U/dL) 73 (51–91) 68 (51–89) 74 (40–90)
CYP2D6 variant genotype (activity score, ASa)
 *1/*1 (AS 2.0; EM) 129 (74.4) 48 (71.6) 49 (74.2)
 *1/*10 (AS 1.5; EM) 13 (7.6) 5 (7.5) 5 (7.6)
 *1/*17 (AS 1.5; EM) 18 (10.5) 8 (11.9) 8 (12.1)
 *1/*4 (AS 1.0; IM) 1 (0.6) 1 (1.5) 0 (0)
 *10/*17 (AS 1.0; IM) 3 (1.8) 2 (3.0) 0 (0)
 *17/*17 (AS 1.0; IM) 4 (2.3) 2 (3.0) 2 (3.0)
 *4/*10 (AS 0.5; IM) 1 (0.6) 0 (0) 1 (1.5)
 *4/*10/*17 (AS 1.0; IM) 2 (1.2) 1 (1.5) 1 (1.5)

aCYP2D6 activity score is the sum of the per-allele scores; a null allele having a score of 0, a deficient allele a score of 0.5 and a normal allele a score of 1. CYP2D6 poor metabolizers (PM AS = 0), intermediate metabolizers (IM AS 0.5–1.0), extensive metabolizers (EM AS 1.5–2.0) [30, 31]