ABCB1	ATP-binding cassette, subfamily B, member 1 gene
AP	Appetite loss
ASCO	American Society of Clinical Oncology
BMI	Body mass index
CF	Cognitive functioning
CI	Confidence Interval
CO	Constipation
COMT	Catechol-O-methyltransferase (enzyme and gene)
DI	Diarrhea
DNA	Deoxyribonucleic acid
DY	Dyspnea
EDTA	Ethylenediaminetetraacetic acid
EF	Emotional functioning
EORTC-QLQ-C30	European Organisation for Research and Treatment of Cancer Core Quality of Life Questionnaire
EPOS	European Pharmacogenetic Opioid Study
FA	Fatigue
FI	Financial difficulties
GQOL	Global health status/QoL
MMSE	Mini-Mental State Examination
NV	Nausea and vomiting
PA	Pain
OPRM1	Mu opioid receptor gene
PF	Physical functioning
P-gp	P-glycoprotein
RF	Role functioning
SD	Standard deviation
SF	Social functioning
SL	Insomnia
QOL	Quality-of-life
SNP	Single nucleotide polymorphism
SPSS	Statistical Package Software for Social Science (for Windows)
VAS	Visual analog scale
WHO	World Health Organization