ALT	Alternative Lengthening of Telomeres
APB	ALT-Associated PML Body
ATRX	α-Thalassemia/Mental Retardation Syndrome X-Linked Protein
CNS	Central Nervous System
DAXX	Death Domain-Associated Protein
DDR	DNA Damage Response
ECTR	Extra Chromosomal Telomere Repeat
EMT	Epithelial-to-Mesenchymal Transition
HR	Homologous Recombination
MSI-H	Microsatellite Instability-High
PanNET	Pancreatic Neuroendocrine Tumor
PML	Promyelocytic Leukemia Protein
PNS	Peripheral Nervous System
SCC	Squamous Cell Carcinoma
T-SCE	Telomere-Sister Chromatid Exchange
TMM	Telomere Maintenance Mechanism
WRN	Werner Protein