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Table 1 The number of the affected chromosomes is based on the detected mutation

From: Molecular patterns of alpha-thalassemia in the kingdom of Saudi Arabia: identification of prevalent genotypes and regions with high incidence

Mutation

NO. of the affected chromosome

Percent

--SEA

8

0.99%

--MED

14

1.8%

– α3.7

503

62.3%

- α 4.2

1

0.12%

α2 IVS1 (−5nt)

167

20.7%

α2 polyA-1 (α2 T.Saudi)

113

14.1%

α2 polyA-2 (α2T.Turkish)

1

0.12%

Total

807

100%

  1. SEA: Southeast Asia, MED: Mediterranean, IVS1: intervening sequence1