Table 1. Clinical characteristics of patients.

Patient	Sex	Age	Serum ferritin (ng/mL)	Genotype (mutation)
1	M	2.5	1286.8	β0(IVS2-654; C>T)/βE
2	M	7.9	1925.8	β0(codon 17; A>T)/βE
3	M	2.5	2099.7	β0(codon 41/42; -TTCT)/βE
4	F	9.0	2624.6	β0(IVS2-654; C>T)/β0(IVS2-654; C>T)