Table 2.

Classifier feature characteristics

Feature	Function	Ranking	Selection frequency	% Missing value
E2F1	CCC/DNAR	1	1	23
ERCC5	DNAR	2	1	9
XRCC1	DNAR	3	0.94	8
GPX1	AO	4	0.92	2
TP63–2	CCC/DNAR	5	0.92	30
GSTP1	AO	6	0.88	12
CDKN1A	CCC/DNAR	7	0.86	2
TP53–2	CCC/DNAR	8	0.86	9
ERCC4–2	DNAR	9	0.78	29
RB1	CCC/DNAR	10	0.74	23
ERCC5–2	DNAR	11	0.70	20
KEAP1–2	AO	12	0.70	11
ERCC1–2	DNAR	13	0.68	4

AO antioxidant protection, DNAR DNA repair CCC cell cycle control