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Table 2 Frequencies of CYP2D6 gene duplications in Arab countries

From: Frequencies of CYP2D6 genetic polymorphisms in Arab populations

Country/References

Duplicated alleles

All duplications combined

*4xN

*10xN

*41xN

*1xN

*2xN

xN

Algeria (Mozabite)

[20]

0

0

0

0

28.3

28.3

Egypt

[21]

0

(0–0.35)a

(0–1.04)a

(2.41–3.8)a

 3.8

Jordan

[16]

6.75

6.75

Lebanon

[22]

9.45

Palestine

[20]

0

0

0

0

4.9

4.9

Saudi Arabia

[18]

10.4

10.4

Syria

[24]

0

3.92

3.92

7.84

UAE

[25]

0.3

1.6

4.3

6.2

  1. aMutawi et al. identified 4 subjects with *2/*41 (3N) and *2/*10 (3N) genotypes without discrimination of which allele has been duplicated