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. 2023 Jul 18;95(4):1095–1100. doi: 10.1038/s41390-023-02729-5

Table 2.

The association between the presence of GDF15 polymorphism and serum levels of GDF15, hepcidin, and erythroferrone.

		Cases (N = 61)		P value
		CC (N = 32)	CG + GG (N = 29)	P value
GDF15 (ng/ml)	Median (IQR)	252.15 (99.75–522.35)	1271.4 (737.6–1530.6)	<0.001
GDF15 (ng/ml)	Range	38.4–927.8	10.5–4842.4	<0.001
Erythroferrone (ng/ml)	Median (IQR)	464.75 (172.4–1270.5)	1388.6 (1005.7–1792.4)	0.002
Erythroferrone (ng/ml)	Range	48.4–3276.2	109.6–5803.8	0.002
Hepcidin (ng/ml)	Median (IQR)	792.95 (618.5–1478.25)	327.9 (273.5–391.1)	<0.001
Hepcidin (ng/ml)	Range	475.7–13,053.9	99.3–560.4	<0.001

N number, CC normal (wild type), CG heterozygous, GG homozygous, GDF15 growth differentiation factor 15.