Welcome to IANS

We are the world's first professional society devoted to the prevention and treatment of AIN (anal intraepithelial neoplasia) and anal cancer.

Our mission is to provide a forum for individuals with a broad spectrum of backgrounds, viewpoints and geographic origin, an exchange of ideas and dissemination of knowledge regarding the pathogenesis, diagnosis, treatment and prevention of anal neoplasia. 


October Patient Seminar

IANS Europe Corner

New!European Task Force Monthly Meetings 

Join the committee the first Thursday on the month starting in October at 17:00 CET

Join the Task Force Meeting

Watch Recording

Upcoming Courses

Career Center

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IANS Scientific Meeting 2023

In-Person Event

Translating Knowledge
into Action  
Making anal cancer history


New!Event Platform

IANS Scientific Meeting 2023

November 9, 2023
HRA Mini-course modules
Before the Scientific Meeting

More Information

Donate Today

Help low income clinicians become a member of IANS by donating today!


The International Anal Neoplasia Society

P.O. Box 1543
Leesburg, Virginia 20177


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