Since this trial has gone on for at least for 4 years or more, in regards to the last patient. We may have 3 survivors now out of the 12 LTFU, since were running at a rate of about 20% to 30% OS.
..As you say there is no clarity on this issue until the final data is collected and the statisticians do a final tally. Regardless I to not believe the LTFU will effect the outcome of this trial,because there are so few. Would be nice to know Optunes pure data, without censures and LTFU though. IMO