BRIEF-Bial says firmly committed to ensure wellbeing of test participants

Jan 15 (Reuters) -

* Bial says is firmly committed to ensure wellbeing of test participants, discover cause of situation

* Portuguese pharmaceutical company bial says five people hospitalized after clinical tests on new drug

* Bial says one of the five people left brain dead

* Says tests followed best international practice and was approved by French regulatory authorites and French ethics commission

* Test related to development of new molecule, inhibitor of enzyme FAAH Source text for Eikon: Further company coverage: [ ] (Reporting by Axel Bugge and Daniel Alvarenga)