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Table 4 Association between PIK3CA mutation status with main clinical-pathological features in the three groups

From: PIK3CA mutations are frequent in esophageal squamous cell carcinoma associated with chagasic megaesophagus and are associated with a worse patient outcome

Variable

 

PIK3CA gene

 

CM/ESCC group

 

ESCC group

 

CM group

 

Category

WT

MUT

p-value

WT

MUT

p-value

WT

MUT

p-value

Alcohol consumption

No

6 (35.3%)

1 (20%)

1.000**

7 (21.2%)

1 (20%)

1.000**

19 (70.4%)

1 (100%)

1.000**

Yes

11 (64.7%)

4 (80%)

26 (78.8%)

4 (80%)

8 (29.6%)

0 (0%)

Tobacco consumption

No

4 (23.5%)

0 (0%)

0.535**

5 (15.2%)

1 (20%)

1.000**

15 (100%)

1 (100%)

1.000**

Yes

13 (76.5%)

5 (100%)

28 (84.8%)

4 (80%)

12 (44.4%)

0 (0%)

Tumor differentiation

Well

4 (22.2%)

1 (25%)

1.000**

7 (22.6%)

0 (0%)

0.171**

NA

NA

NA

Moderate

13 (72.2%)

3 (75%)

21 (67.7%)

3 (60%)

NA

NA

Poorly

1 (5.6%)

0 (0%)

3 (9.7%)

2 (40%)

NA

NA

TNM Staging

I e II

4 (28.6%)

0 (0%)

0.541**

15 (46.9%)

1 (20%)

0.421**

NA

NA

NA

III e IV

10 (71.4%)

3 (100%)

17 (53.1%)

4 (80%)

NA

NA

Megaesophagus degree

GI/GII

7 (41.2%)

3 (60%)

0.406**

NA

NA

NA

3 (11.1%)

1 (100%)

0.143**

GIII/GIV

10 (58.8%)

2 (40%)

NA

NA

24 (88.9%)

0 (0%)

TP53 gene [7]

WT

9 (50%)

2 (40%)

1.000**

20 (60.6%)

2 (40%)

0.632**

26 (96.3%)

1 (100%)

1.000**

MUT

9 (50%)

3 (60%)

13 (39.4%)

3 (60%)

1 (3.7%)

0 (0%)

  1. **Fisher’s exact test; ***Analysis of variance. CME/ESCC – chagasic megaesophagus associated with esophageal squamous cell carcinoma; ESCC – esophageal squamous cell carcinoma without chagasic megaesophagus; CME – chagasic megaesophagus without esophageal squamous cell carcinoma. N – number of cases; SD – standard deviation; NA – not applicable; WT – wild-type; MUT – mutated