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Table 1 Clinicodemographic patient characteristics

From: Overlap time is an independent risk factor of radiation pneumonitis for patients treated with simultaneous EGFR-TKI and thoracic radiotherapy

Factor

N (%)

Gender (n)

 

 Male

27 (40.30%)

 Female

40 (59.70%)

Age (median, range) (y)

53.01 (36.73–78.35)

Smoking history (n)

 

 No

50 (74.63%)

 Yes

17 (25.37%)

T stage in naïve (n)

 

 1–2

43 (64.18%)

 3–4

24 (35.82%)

TNM stage (n)

 

 IIIB-IIIC

13 (19.40%)

 IVA-IVB

54 (80.60%)

Location (n)

 

 Upper lobe

21 (31.34%)

 Middle and lower lobe

46 (68.66%)

Type of mutation (n)

 

 EGFR exon 19 del

30 (44.78%)

 EGFR exon 21 L858R

29 (43.28%)

 Others

8 (11.94%)

Type of EGFR-TKI (n)

 

 Gefitinib

39 (58.21%)

 Erlotinib

17 (25.37%)

 Icotinib

11 (16.42%)

The treatment model (n)

 

 Simultaneous EGFR-TKI and TRT for first line

16 (23.88%)

 Simultaneous EGFR-TKI, chemotherapy and TRT for first line

18 (26.87%)

 Previous chemotherapy, simultaneous EGFR-TKI and TRT for second line

33 (49.25%)

Dose fractionation (n)

 

 CFRT

59 (88.06%)

 SBRT

8 (11.94%)

Dose per fraction (median, range) (Gy)

2 (2–12)

Total dose (median, range) (Gy)

56 (39–72)

GTV (median, range) (ml)

25.30 (0.70–338.80)

PTV (median, range) (ml)

133.30 (11.40–752.20)

  1. EGFR-TKI epidermal growth factor receptor tyrosine kinase inhibitor, TRT thoracic radiotherapy, CFRT conventional fractional radiotherapy, SBRT stereotactic body radiation therapy, GTV gross tumor volume, PTV plan tumor volume, RP radiation pneumonitis