National Cancer Institute Thesaurus

Last uploaded: February 23, 2024
Preferred Name

Attenuated Familial Adenomatous Polyposis
Synonyms

Attenuated Familial Adenomatous Polyposis

Attenuated Adenomatous Polyposis Coli

Hereditary Flat Adenoma Syndrome

AAPC

AFAP

HFAS

Definitions

A rare genetic syndrome with an autosomal dominant pattern of inheritance. It was formerly called hereditary flat adenoma syndrome (HFAS) but is now recognized as an attenuated variant of familial adenomatous polyposis (FAP). It is most commonly associated with mutations in the APC gene specifically: exons 1-5, exon 9 and in the distal 3' terminus. Clinical presentation occurs in the middle decades and is characterized by the proximal development of multiple (but less than 100), non-polypoid colonic adenomas. Clinical progression to colorectal cancer may occur later in life but the risk is less than with classic FAP.

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C6729

code

C6729

Concept_In_Subset

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C177281

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C177516

Contributing_Source

CCPS

DEFINITION

A rare genetic syndrome with an autosomal dominant pattern of inheritance. It was formerly called hereditary flat adenoma syndrome (HFAS) but is now recognized as an attenuated variant of familial adenomatous polyposis (FAP). It is most commonly associated with mutations in the APC gene specifically: exons 1-5, exon 9 and in the distal 3' terminus. Clinical presentation occurs in the middle decades and is characterized by the proximal development of multiple (but less than 100), non-polypoid colonic adenomas. Clinical progression to colorectal cancer may occur later in life but the risk is less than with classic FAP.

FULL_SYN

Attenuated Familial Adenomatous Polyposis

Attenuated Adenomatous Polyposis Coli

Hereditary Flat Adenoma Syndrome

AAPC

AFAP

HFAS

label

Attenuated Familial Adenomatous Polyposis

Legacy Concept Name

Flat_Adenoma_Syndrome

Preferred_Name

Attenuated Familial Adenomatous Polyposis

prefixIRI

Thesaurus:C6729

Related_To_Genetic_Biomarker

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C17567

Semantic_Type

Disease or Syndrome

UMLS_CUI

C2674616

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C3266

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