Familial Adenomatous Polyposis
Sequencing of the APC gene
| Genes (full coding
 region):
 | APC | 
| Specimen requirements: | 2-4 ml of blood with anticoagulant EDTA 2 µg DNA in TE, AE or pure sterile water at 100-250 ng/µlThe A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker.
 | 
 
Del/dup analysis of the APC gene
| Specimen requirements: | 2-4 ml of blood with anticoagulant EDTA 1 µg DNA in TE, AE or pure sterile water at 100-250 ng/µlThe A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker.
 | 
 
Indications for mutation analysis:
1. Testing of individuals with adenomatous polyps
2. Testing of first degree relatives of the affected individuals
3. Genetic counseling
Familial adenomatous polyposis (FAP) is a colon cancer predisposition syndrome characterized by the early onset of hundreds to thousands of adenomatous polyps throughout the colon. By age 35, 95% of individuals with FAP have polyps. If left untreated, patients with this syndrome develop colon cancer by age 35-40. APC-associated polyposis conditions are inherited in an autosomal dominant manner.