Table 2.

The frequencies of the 12 most frequent β-thalassemia mutations among 1039 characterized chromosomes among Kurds

Mutation	Origin	Number of alleles (%) (total 1039)
IVS-II-1 (G>A)	Eastern Mediterranean	340 (32.7)
IVS-I-6 (T>C)	Mediterranean	182 (17.5)
IVS-I-1 (G>A)	Mediterranean	84 (8.1)
Codon 8 (−AA)	Turkish	80 (7.7)
Codons 8/9 (+G)	Asian Indian	65 (6.3)
IVS-I-110 (G>A)	Mediterranean	51 (4.9)
Codon 5 (−CT)	Mediterranean	49 (4.7)
Codon 39 (C>T)	Western Mediterranean	41 (3.9)
Codon 44 (−C)	Kurdish	40 (3.8)
IVS-I-5 (G>C)	Asian Indian	25 (2.4)
IVS-I-128 (T>G)	Saudi Arabian	20 (1.9)
Codon 82/83 (−G)	Azerbaijani	14 (1.3)