Expression of AHR specific Affymetrix probe ranked between samples of CD34+CD38low hematopoietic progenitors allowed to distinguish two AHR-related subgroups of patients with chronic myeloid leukemia: one subgroup of patients with AHR expression comparable to expression in healthy donor samples (n = 3 of 7, subgroup CML AHR-low), and one subgroup of patients with an overexpression of AHR (CML AHR-high) in hematopoietic progenitors (n = 4 of 7) in comparison to healthy donor samples (two-sided Student test with Welch correction: p-value = 0.0263, Fig 7A). Here, AHR is linked to chronic myelogenous leukemia, BCR-ABL1 positive.