Table 1.

Characteristics of the cohort depending on the toxicity group. Age, RTOG (Radiation Therapy Oncology Group)/EORTC (European Organization for Research and Treatment of Cancer) grade of late skin toxicity, total received dose, BED (Biological Effective dose) with α/β = 3, treatment year, gender and Fitzpatrick skin type are reported here. Groups Tox ≤ 2 and Tox ≥ 3 correspond to patients presenting grade 2 or less and grade 3 or more of late skin reactions after RT according to RTOG/EORTC, respectively.

Group	Patient Number	Age	RTOG	Dose (Gy)	BED (Gy3)	Treatment Year	Gender	Fitzpatrick Skin Type
Tox ≤ 2	1	80	0	40	93.33	2016	F	4
	2	75	2	50	83.33	2014	F	2
	3	61	1	50	83.33	2014	M	1
	4	76	1	44	102.67	2011	M	3
	5	77	1	50	83.33	2015	M	3
	6	74	1	50	83.33	2016	F	2
	7	56	0	50	83.33	2013	M	2
	8	91	1	48	86.40	2012	M	2
	9	71	0	50	83.33	2016	M	4
Mean ± SD		73.44 ± 3.62		48.00 ± 1.27	86.93 ± 2.39
Tox ≥ 3	10	58	3	50	83.33	2015	F	2
	11	82	3	48	86.40	2006	M	2
	12	71	3	50	83.33	2016	M	2
	13	79	4	48	86.40	2010	F	3
	14	72	3	40	93.33	2014	F	3
	15	65	3	50	83.33	2011	M	2
	16	69	3	48	86.40	2013	F	2
	17	84	3	48	86.40	2015	M	3
	18	88	3	48	86.40	2015	F	2
Mean ± SD		74.22 ± 3.45		47.77 ± 1.09	86.14 ± 1.09