Figure 4From: Combined analysis of circulating β-endorphin with gene polymorphisms in OPRM1, CACNAD2 and ABCB1 reveals correlation with pain, opioid sensitivity and opioid-related side effectsQuality of Life and symptom scores. Quality of Life (QoL) and symptom scores in patients carrying the various alleles of the ABCB1 gene. For further details see Methods and Results.Back to article page