Table 5. Serum levels of erythropoietin by genotype in Sherpas and non-Sherpa Nepalese.^* .

	Sherpas at 3440 m	Nepalese at 1300 m
Overall levels	23.1±11.2 (mU/mL)	22.5±15.4 (mU/mL)
By genotypes
rs13419896 (G/A)
GG	25.7±11.8	21.6±8.3
GA	20.5±9.7	20.1±8.7
AA	22.7±8.6	17.1±11.2
rs4953354 (A/G)
AA	25.8±14.9	21.6±10.4
AG	22.8±11.3	20.7±5.9
GG	22.1±8.1	18.2±9.4
rs4953388 (G/A)
GG	20.2±7.7	19.8±7.7
GA	23.0±9.9	21.1±8.3
AA	22.1±8.7	23.4±11.1

^*Data are expressed as means ± standard deviation. P>0.05 for the comparisons of each genotype between Sherpa and non-Sherpa Nepalese subjects, calculated by unpaired Student’s t-test.