CEEOG has greatly expanded and now includes 35 academic andcommunity hospitals from Poland, Romania, Slovakia, Bulgaria, Slovenia, Croatia, Bosnia and Hercegovina, Yugoslavia, Hungary, Czech Republic and Russia.
The group was founded in 2005 by Dr. Renata Duchnowska from the Military Medical Institute in Warsaw as a result of establishing an informal network of some Polish oncology centers. A year later group teamed up with foreign research groups and academic centers. In 2008, the patronage of the Group's research covered the CEEOG.
Historically, CEEOG was established in 1983 as the South and East European Oncology Group (SEEOG) and chaired for the next 16 years by Prof. Sandor Eckhardt from the National Cancer Institute in Budapest. SEEOG was a modern drug-oriented research organization. Its major aim was to conduct phase II and III clinical trials of novel anticancer agents and regimens in common malignancies. Group meetings were held regularly twice a year and were attended by the representatives of all institutions. These were typically working sessions at which new study protocols were proposed and discussed, and the progress of ongoing studies was presented. Data collection was greatly facilitated by user-friendly bilingual case report forms and by the computerization of the Trial Center. The goal of SEEOG was to identify, evaluate and introduce new anticancer agents.
In the mid-80s, the SEEOG consisted of 15 institutions from Hungary, Poland, Czechoslovakia, Yugolavia, Bulgaria and Romania. After a few years it was renamed the Central and East European Oncology Group (CEEOG), as this corresponded better to the geographical location of its member countries. In the 80s and early 90s the Group conducted a series of trials addressing breast cancer, ovarian cancer, lung cancer and head and neck cancer.