5-FU	5-Fluorouracil
ADE	Adverse drug event
CPIC	Clinical Pharmacogenetics Implementation Consortium
CYP2C19	Cytochrome P-450 family 2 subfamily C member 19
CYP2D6	Cytochrome P450 family 2 subfamily D member 6
DNA	Deoxyribonucleic acid
DPYD	Dihydropyrimidine dehydrogenase
DPWG	Dutch Pharmacogenetics Working Group
EMA	European Medicines Agency
EUR	European
FDA	Federal Drug Administration
GOF	Gain of function
HET	Heterozygous genotype
HOM	Recessive homozygous genotype
H-W	Hardy–Weinberg
IBS	Iberian peninsula
ID	Identification number
IM	Intermediate metabolizer
LD	Linkage disequilibrium
LOF	Loss of function
MAF	Minor allele frequency
NM	Normal metabolizer
PGx	Pharmacogenetics
PM	Poor metabolizer
SNP	Single-nucleotide polymorphism
TPMT	Thiopurine methyltransferase
UGT1A1	Uridine diphosphate glucuronosyltransferase 1 family, polypeptide A1
UM	Ultrarapid metabolizer
WT	Wildtype