I guess I should have said that I can't muster the level of interest required to understand the issue at the required depth of detail. I regret it because I know your interest is always sincere and compelling, but I have no stake in the issue. In the other instance I have years of curiosity investing me and that isn't present here.
Maybe some day, but not today.
FWIW GRTX issued a press release today and has some comments in the About GC4419 section that MAY interest you.