The German RA becomes knowledgeable about the entire trial, not just the patients treated in Germany, once they become a relevant RA on a trial. Germany has a very difficult history with unethical human experimentation that they take quite seriously, perhaps more seriously than any other jurisdiction in the developed world.
Not sure why they would have access to data from other jurisdictions, but whatever.
Why is it that the FDA placed a partial hold on the trial and Germany never did?