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Table 3 Presence of a clinical response at 6 months by selected factors

From: HPV positive, wild type TP53, and p16 overexpression correlate with the absence of residual tumors after chemoradiotherapy in anal squamous cell carcinoma

Characteristics

Clinical response (%)

No clinical response (%)

p-value

Age

  

0.488

  < 65 years old

28 (63.6)

16 (36.4)

 

  ≥ 65 years old

19 (55.9)

15 (44.1)

 

Gender

  

< 0.001

 Female

46 (71.9)

18 (28.1)

 

 Male

1 (7.1)

13 (92.9)

 

Degree of Cell Differentiation

  

0.387

 G I / G II

40 (62.5)

24 (37.5)

 

 G III / G IV

7 (50.0)

7 (50.0)

 

Clinical Stage (UICC)

  

< 0.001

 I - II

31 (86.1)

5 (13.9)

 

 III A - III B

16 (38.1)

26 (61.9)

 

T stage

  

< 0.001

 T 1 (≤2 cm)

1 (16.7)

5 (83.3)

 

 T 2 (> 2 and ≤5 cm)

4 (13.3)

26 (86.7)

 

 T 3 (>  5 cm)

15 (50.0)

15 (50.0)

 

 T 4 (tumour invading adjacent organ)

11 (91.7)

1 (8.3)

 

N stage

  

0.035

 Negative

40 (66.7)

20 (33.3)

 

 Positive

7 (38.9)

11 (61.1)

 

HPV

  

< 0.001

 Positive

47 (79.7)

12 (20.3)

 

 Negative

0 (0.0)

19 (100.0)

 

HIV

  

0.063

 Positive

8 (42.1)

11 (57.9)

 

 Negative

39 (66.1)

20 (33.9)

 

P16

  

< 0.001

 Positive

45 (78.9)

12 (21.1)

 

 Negative/borderline

2 (9.5)

19 (90.5)

 

TP53

  

< 0.001

 Mutant

2 (9.5)

19 (90.5)

 

 Wild type

45 (78.9)

12 (21.1)

 
  1. Statistically significant p-values are shown in bold