Table 4.

Difference in BMI and serum biomarkers in estrogen receptor-positive and estrogen receptor-negative male breast cancer patients.

Serum Biomarker	Estrogen Receptor-Positive (n = 10)	Estrogen Receptor-Negative (n = 6)
BMI	23.84 ± 1.83	23.76 ± 2.09
Serotonin (μmol/L)	0.38 ± 0.15	0.36 ± 0.12
Ghrelin (pmol/L)	269.9 ± 40.17	270.13 ± 35.55
GABA (μmol/L)	0.31 ± 0.11	0.26 ± 0.10
Dopamine (pmol/L)	111.51 ± 21.32	104.30 ± 18.25
Melatonin (pmol/L)	62.72 ± 8.99	59.20 ± 8.56
Epinephrine (pmol/L)	302.54 ± 10.39	303.38 ± 11.63

All values are mean ± SD; there was no significant difference.