ALT	Alternative Lengthening of Telomeres
Pol	DNA Polymerase
POT1/TTP1	Protection of Telomeres protein 1
HR	Homologous Recombination
RP-A	Replication Protein A
ECRTs	Extra-Chromosomal Telomeric Repeats
DSBs	Double Strand Breaks
aNHEJ	Alternative Microhomology-Mediated Non-Homologous End Joining Pathway
PARP-1	Poly (ADP-Ribose) Polymerase
BIR	Break Induced Replication
TLS	Translesion Synthesis
MMST	Microhomology Mediated Strand Transfer
HU	Hydroxyurea
PML	ALT-associated promyelocytic leukemia
TERRA	Telomeric Repeats Containing RNA
TIFs	telomere dysfunction-induced foci