3′UTR	3′ Untranslated region
ABCA1	ATP-binding cassette transporter A1
AC	Ampulla Vater cancer
AGO	Argonaute
AQP-5	Aquaporin-5
AUC	Area under the curve
BBD	Benign biliary diseases
BBO	Benign biliary obstruction
BDL	Bile duct-ligated
BTCs	Biliary tract cancers
CA19-9	Carbohydrate 19-9
CCA	Cholangiocarcinoma
CEA	Carcinoembryonic antigen
CP	Chronic pancreatitis
CT	Computed tomography
CYP7A1	Cholesterol 7a-hydroxylase mRNA
dCCA	Distal cholangiocarcinoma
eCCA	Extrahepatic cholangiocarcinoma
ERCP	Endoscopic retrograde cholangiopancreatography
EUS	Endoscopic ultrasound
EVs	Extracellular vesicles
EXOmotif	miRNAs into exosomes attached to specific motifs
exRNA	Extracellular RNA
FXR	Farnesoid X receptor
GBC	Gallbladder cancer
HBD	Hilar bile duct cancer
HDL	High-density lipoprotein
hnRNP	Ribonucleoprotein
hnRNPA2B1	Heterogeneous nuclear ribonucleoprotein A2/B1
HVs	Healthy volunteers
iCCA	Intrahepatic cholangiocarcinoma
LncRNAs	Long non-coding RNA
LOH	Loss of heterozygosity
LXR	Liver X receptors
miRNAs	microRNAs
miRNA*	Temporary string miRNA
MRI	Magnetic resonance imaging
NOZ	Gallbladder cancer cell lines
PA	Pancreatic adenocarcinoma
PBC	Pancreato-biliary cancers
pCCA	Perihilarcholangiocarcinoma
pre-miRNA	Precursor miRNA
pri-miRNA	Primary miRNA
PSC	Primary sclerosing cholangitis
PTC	Percutaneous transhepatic cholangiography
RISC	RNA-induced silencing complex
SOD	Sphincter of Oddi dysfunction
TNM	Staging system for classification of malignant tumours
TUTases	Uridylyltransferases
XPO5	Exportin 5