Table 4.

Karnofsky performance scale score of patients with different prion protein expression levels

PrPc expression	n	Before treatment	2 yr later	Difference
0	59	85.25 ± 11.40	73.90 ± 22.40	11.35
1	30	81.67 ± 17.34	69.33 ± 25.68	12.34
2	39	74.10 ± 18.77	60.77 ± 31.81	13.33
≥ 3	57	63.90 ± 18.87	45.93 ± 32.00	17.97

PrPC: Prion protein.