Fire fox & Mojojo,
What you found is in every drug invention "patent" publication. There is nothing of meaning or substance, as to any collaboration between DNA, Roche, BMY and Peregrine. NOTHING!
I'm not surprised that our team has started grabbing straws, in an attempt to join them, if you can't beat them, Hail Mary...
Further more anti-PD-1 therapies suck (for lack of a better word) and will be proven so, either after approval or in failed late stage trials. The entire concept of PD-1 therapy is not novel, and is lipstick on a pig of past failed t-cell stimulating therapeutics. I've posted how and why if you care to look in previous post.
For the sake of science, I hope the PS platform is bought out, and allowed to progress as dreamed by Dr.Thorpe. This group is driving it straight into the ground, out of shear greed.. Very sad, and redundant after all these years..
All the best,
John