Starting in November 2009 and throughout 2010, GESSEL has provided legal advice to the Association for Aiding GIST Patients. Established in 2004, this non-governmental organisation works to provide multi-faceted support to persons suffering from gastrointestinal stromal tumours and to their families and caregivers.

The Association increase awareness about GIST conditions, cooperates with the medical community and with like-minded organisations, and – first and foremost – works with patients so as to improve their chances for recovery and for return to a healthy, active life.