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CTNNA1

Associated Syndrome

Hereditary Diffuse Gastric Cancer syndrome (HDGC)

Core Cancer Risk(s)

Diffuse Gastric Cancer

Inheritance 

Autosomal Dominant 

Prevalence

1 in 2912

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CANCER

GENETIC CANCER RISK

Gastric

High Risk

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CANCER TYPE

AGE RANGE

CANCER RISK

RISK FOR GENERAL POPULATION 

Gastric

To age 80

49%-57%

0.6%

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CANCER TYPE

PROCEDURE

AGE TO BEGIN

FREQUENCY

Gastric

Endoscopy with targeted and random biopsies

Individualized

Annually

Consider gastrectomy, after baseline endoscopy

Individualized

N/A

Consider testing and treating for Helicobacter pylori infection if present

Individualized

N/A

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