Table 1. Summary of the 74 RCC patients involved in this study.

Age
Mean ± SD, year	56.22 ± 13.32
<60	42	56.8%
≥60	32	43.2%
Gender
Male	47	63.5%
Female	27	39.5%
Tumor size
≤4	42	56.8%
>4	32	43.2%
Histology
Clear cell carcinoma	61	82.4%
Others	13	17.6%
Histological grade
I	15	20.3%
II	47	63.5%
III	9	12.2%
IV	3	4.0%
Tumor stage
T1	64	86.5%
T2	6	8.1%
T3	4	5.4%
Survival
Mean ± SD, month	60.73 ± 18.27
No	13	17.6%
Yes	61	82.4%
CAPN2 expression
Low	50	67.6%
High	24	32.4%

SD, standard deviation.