Table 1. Clinical characteristics of conventional and pagetic GCT patients.

	GCT n=100	GCT/PDB n=117*
Age at onset of GCT	33.2±8.4	62.5±11.7
Single GCT (%)	99	75
Multifocal GCT (%)	1	25
GCT involving axial skeleton (%)	6	75
GCT involving appendicular skeleton (%)	94	25
5-year survival rate (%)	>95	<50
High ALP serum levels at GCT onset (%)	rare	98.6
Family history (%)	none	35

* GCT/PDB data derived from Rendina et al. 2015