Table 4 Frequency of the Common Alpha Thalassemia Alleles in the Study

Allele

N = 698

Frequency

N = 634

Frequency

AATAAA➔AATAAG (PA-1)

412

0.590

386

0.608

-α-3.7 single gene deletion

107

0.153

91

0.143

--MED double gene deletion

12

0.017

12

0.019

α2 cd19 (−G)

10

0.0143

9

0.0141

α2 IVS-1 (−5 nt)

8

0.011

5

0.008

α2 cd59 (G➔A)

4

0.006

4

0.006

-α-4.2 single gene deletion

2

0.003

2

0.003

AATAAA➔AATGAA (PA-2)

2

0.003

2

0.003

α2 cd 142 (T➔C) Hb Constant Spring

2

0.003

2

0.003