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Table 2 The phenotypic manifestations of JPS in NRFSU families compared to Non- NRFSU families

From: Phenotypic diversity among juvenile polyposis syndrome patients from different ethnic background

 

Non NRFSU families (%) (N = 23)

NRFSU families (%) (N = 11)

p-value

Genetic test performance

no

6 (26.1)

1 (9.1)

p = NS

yes

17 (73.9)

10 (90.9)

Positive genetic test

no

3 (17.6)

3 (30.0)

p = NS

yes

14 (82.4)

7 (70.0)

Affected gene

SMAD4

6 (42.9)

0 (.0)

p = NS*

BMPR1A

8 (57.1)

7 (100.0)

Colonic involvement

no

1 (4.3)

1 (9.1)

p = NS

yes

22 (95.7)

10 (90.9)

Colonic polyps

0

1 (4.3)

1 (9.1)

p = NS

1–10

5 (21.7)

4 (36.4)

11–50

8 (34.8)

3 (27.3)

50–100

9 (39.1)

2 (18.2)

> 100

0 (.0)

1 (9.1)

Colonic surgery

no

18 (78.3)

7 (63.6)

p = NS

yes

5 (21.7)

4 (36.4)

CRC

no

23 (100.0)

10 (90.9)

Not done

yes

0 (.0)

1 (9.1)

Gastric involvement

no

17 (77.3)

3 (33.3)

p = 0.038

yes

5 (22.7)

6 (66.7)

Gastric polyps

0

13 (76.5)

3 (33.3)

p = 0.017

1–10

2 (11.8)

2 (22.2)

11–50

0 (.0)

2 (22.2)

50–100

2 (11.8)

1 (11.1)

> 100

0 (.0)

1 (11.1)

Gastric cancer

no

22 (95.7)

11 (100.0)

Not done

yes

1 (4.3)

0 (.0)

Gastric surgery

no

20 (87.0)

10 (90.9)

p = NS

yes

3 (13.0)

1 (9.1)

Small bowel involvement

no

8 (80.0)

2 (40.0)

p = NS

yes

2 (20.0)

3 (60.0)

Surgery/DBE/SBE

no

14 (87.5)

6 (100.0)

p = NS

yes

2 (12.5)

0 (.0)

Family history of cancer

no

10 (83.3)

3 (42.9)

p = NS

yes

2 (16.7)

4 (57.1)

  1. NRFSU non Russia former Soviet Union, NS not significant, CRC colorectal cancer, DBE double balloon enteroscopy, SBE single balloon enteroscopy
  2. *SMAD4 mutation showed a trend towards negative association with p = 0.057