Admission to the intensive care unit (ICU) is a common event in patients treated for solid tumors or hematologic malignancies. A volume-outcome relationship has been shown in these patients, with a mortality rate decreasing from 70% in low-volume centres to 30-40% in high-volume centres.

We hypothesize that providing the low-volume centres with assistance from experts working in high-volume centres for the management of critically-ill cancer patients can bring down mortality to the values seen in high-volume centres.

The main objective of this study is to evaluate whether combining three knowledge-transfer methods (videoconference-based forum, educational sessions, and dissemination of published work) increases the survival of cancer patients managed in low-volume centres to the values seen in high-volume centres.

The main endpoint is all-cause mortality at hospital discharge.

Inclusion Criteria:

1. Adult patients (> 18 years old)
2. Active malignancy;
3. ICUs seeking for an advice must admit fewer than 30 patients with active cancer per year;
4. Patients has been urgently admitted in the ICU for a life threatening complication of the malignancy or its treatments.

Exclusion Criteria:

1. Isolated HIV infection or AIDS;
2. ICU admission complicating scheduled surgery,
3. Treatment-limitation decisions at admission;
4. No coverage by the French statutory health insurance system,
5. Pregnant or breastfeeding