Table 1.

Markers studied by 4 or more studies.

Marker	Function	Expression	References
LDH	Diagnosis	Increased	[18,20,22,23,52,74]
TNF-α	Diagnosis, prognosis	Increased	[32,33,35,40,41,42]
MMP-9	Diagnosis, transformation	Increased	[13,14,15,75]
IL-8	Diagnosis	Increased	[32,33,34,35,36,37,38]
IL-1β	Diagnosis, prognosis	Increased	[33,35,36,37,38]
IL-6	Diagnosis Prognosis	Increased	[32,33,34,35,38]