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. 2020 Apr;74(2):90–94. doi: 10.5455/medarh.2020.74.90-94

Table 4. The Level of HbF in homozygote (-/-) and heterozygote XmnI Polymoprhism between TM and TI.

Phenotype Level of HbF P value
XmnI -/-
Mean (±SD)
XmnI +/-
Mean (±SD)
TM 5.71(3.44) 7.07(4.71) 0.536
TI 6.70(3.61) 13.73((12.07) 0.122
P value 0.470 0.157