ESTRO 2024 - Abstract Book

S1408

Clinical - Head & neck

ESTRO 2024

0

3

3.9

1

19

25

2

26

34.2

3

6

7.9

4

22

29

N-Stage

0

5

6.6

1

11

14.5

2a

8

10.5

2b

41

53.9

2c

10

13.2

3

1

1.3

Dominant HPV subtype

16

71

93.4

18

0

0

31

0

0

33

4

5.3

35

1

1.3

Table 1 - Baseline patient data

Mean total baseline cfDNA titre was 1422 copies/ml (95%CI 518.4 – 2326, range 0.77 – 30380). Mean total baseline log2 cfDNA was 7.32 (95%CI 6.49 – 8.15, range -0.377 - 14.9). Tumour volume data (mean, 95%CI, range) were as follows; GTVp (19.3cm3, 15.3-23.3, 0- 99.2), GTVn (17.4cm3, 14.2-20.7, 0-62.4) GTVt (36.7cm3, 31.7-41.7, 8.7-105.3). A histogram of baseline log2 cfDNA titres is shown in Figure 1.