What is the history of Familial Adenomatous Polyposis?

Familial Adenomatous Polyposis (FAP) is a hereditary condition characterized by the development of hundreds to thousands of colorectal polyps, first clinically described in the late 19th century. Our understanding of Familial Adenomatous Polyposis has evolved from a mysterious surgical challenge to a precisely mapped genetic disorder, now managed through proactive surveillance and targeted molecular medicine.

When was Familial Adenomatous Polyposis first described?

While polyps were noted in earlier surgical reports, the clinical entity of Familial Adenomatous Polyposis was definitively characterized by British surgeon Lockhart-Mummery in 1925, who recognized its strong hereditary pattern. Earlier observations by Cripps in 1882 laid the groundwork, but it was the 20th-century recognition of the condition’s inevitable progression to colorectal cancer that transformed it into a major focus of surgical oncology.

How has our understanding of the genetics of FAP changed?

The most significant leap occurred in 1987, when researchers localized the gene responsible for Familial Adenomatous Polyposis to chromosome 5q21. By 1991, the APC (Adenomatous Polyposis Coli) gene was identified. This discovery fundamentally changed the management of Familial Adenomatous Polyposis, shifting the paradigm from purely reactive surgery to predictive genetic testing for asymptomatic family members.

What are the major milestones in the treatment of FAP?

Management of Familial Adenomatous Polyposis has progressed through several critical medical eras:

• 1950s-70s: Standardization of prophylactic proctocolectomy as the primary life-saving measure.


• 1980s: Introduction of the ileal pouch-anal anastomosis (IPAA) to improve quality of life after surgery.


• 2000s: Approval of COX-2 inhibitors (like celecoxib) as chemopreventive agents to reduce polyp burden.


• Modern Era: Integration of endoscopic surveillance and genetic counseling to delay or avoid major surgery.

How has patient advocacy shaped FAP awareness?

Historically, Familial Adenomatous Polyposis was a lonely diagnosis, often shrouded in stigma due to its hereditary nature. Today, 147 members of the DiseaseMaps.org community share their experiences, fostering a global support network that empowers patients to advocate for early screenings and participate in clinical trials, ensuring no one faces this diagnosis in isolation.

Next steps

• Consult a genetic counselor to discuss APC gene testing for yourself and family members.


• Join the Familial Adenomatous Polyposis community on DiseaseMaps.org to connect with others.


• Schedule regular colonoscopic surveillance with a gastroenterologist specializing in hereditary polyposis syndromes.

Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Familial Adenomatous Polyposis


• Orphanet: Familial Adenomatous Polyposis (ORPHA:734)


• OMIM (Online Mendelian Inheritance in Man): Adenomatous Polyposis of the Colon


• The Polyposis Registry and major patient advocacy foundations