Table 1.

Patient characteristics.

Unique ID	Group	Age (year)	Gender	Nephrectomy type	Creatinine	Primary tumour status	Tumour size (mm)	Fuhrmann grade	Leibovich Score 20031	Leibovich Score 20182	Time to metastasis (days)	Pair ID
RCC01	Progressor	72	Female	Radical	106	T1a	20	2	0	2	2680	5
RCC02	Progressor	72	Male	Radical	109	T1b	50	2	2	5	2319	6
RCC03	Progressor	66	Male	Radical	113	T1a	35	3	1	3	2632	3
RCC05	Progressor	83	Male	Radical	81	T1b	50	2	2	5	109	7
RCC06	Progressor	67	Male	Radical	176	T1b	48	2	2	5	1385	8
RCC08	Progressor	63	Male	Radical	60	T1a	40	3	1	3	1994	2
RCC09	Progressor	51	Female	Radical	58	T1a	38	3	2	5	1544	1
RCC11	Progressor	66	Male	Partial	61	T1a	15	3	2	5	965	4
RCC04	Nonprogressor	63	Male	Radical	82	T1b	50	2	2	5		6
RCC07	Nonprogressor	76	Male	Radical	98	T1b	45	2	2	5		7
RCC10	Nonprogressor	78	Female	Partial	64	T1a	20	2	0	2		5
RCC12	Nonprogressor	63	Male	Radical	80	T1b	45	2	2	5		8
RCC13	Nonprogressor	34	Male	Partial	73	T1a	23	3	1	3		1
RCC14	Nonprogressor	72	Male	Partial	97	T1b	55	2	2	5		6
RCC15	Nonprogressor	75	Male	Radical	73	T1b	45	2	2	5		7
RCC16	Nonprogressor	62	Male	Radical	82	T1a	30	3	1	3		3
RCC17	Nonprogressor	54	Male	Partial	68	T1a	35	3	1	3		2
RCC18	Nonprogressor	68	Female	Partial	45	T1a	20	2	0	2		5
RCC19	Nonprogressor	68	Male	Radical	68	T1b	45	2	2	5		8
RCC20	Nonprogressor	66	Male	Radical	67	T1a	30	3	1	3		2
RCC21	Nonprogressor	57	Male	Partial	73	T1a	30	3	1	3		3
RCC22	Nonprogressor	66	Male	Partial	83	T1a	38	3	1	3		4
RCC23	Nonprogressor	74	Male	Partial	81	T1a	16	3	1	3		4
RCC24	Nonprogressor	47	Female	Partial	48	T1a	40	3	1	3		1

One NP patient (RCC19) developed a metastasis after 10 years of follow-up.