Fig. 3
From: A truncating mutation in EPOR leads to hypo-responsiveness to erythropoietin with normal haemoglobin

Serum EPO concentration of 34 carriers of rs370865377[A] and 34 non-carriers matched by sex, sample collection date, and age at sampling date. Measurements were performed by ELISA. The bottom and top of each box represent the first and third quartiles, the line inside the box is the median and whiskers represent the ±1.5 times the interquartile range. EPO serum levels are plotted on the log-scaled y-axis. The median value of serum EPO concentration of carriers was 3.23-fold higher (median = 22.1 IU L−1; Q1 = 14.1; Q3 = 30.0) than that of non-carriers (median = 6.8 IU L−1; Q1 = 5.4; Q3 = 9.0) (P = 1.7 × 10−6)