A-SMase	Acid-sphingomyelinase
DAG	Diacylglycerol
HLA-DR	Human leukocyte antigen-DR
IR	Ionizing radiation
JNK	c-Jun NH2-terminal kinases
MAPKK7	Mitogen-activated protein kinase kinase 7
N-SMase	Neutral-sphingomyelinase
PC	Phosphatidylcholine
PC-PLC	Phosphatidylcholine-specific phospholipase C
PI	Phosphatidylinositol
PI-PLC	Phosphatidylinositol-specific phospholipase C
PKC	Protein kinase C
PTC	Papillary thyroid carcinoma
RET	Rearranged during transfection
RSM-synthase	Reverse sphingomyelin-synthase
SM	Sphingomyelin
SM-synthase	Sphingomyelin-synthase
UV	Ultraviolet rays