I am not sure that I am misinterpreting your post but I will addresss the issues that are not quite correct.
You are correct that Endostatin and Angiostatin are both potent oncology drugs.
Oxford Biomedica does not plan to make RetinoStat an oncology drug, but Oxford Biomedica has been investigating EndoAngioGT in preclinical studies as an oncology gene therapy.
http://www.oxfordbiomedica.co.uk/press-releases/oxford-biomedica-plc-preliminary-results-for-the-year-ended-31-december-2007/We do not need to extrapolate Endostatin and AngioStatin are two of the most potent angiognesis inhibitors known to man. This is a known fact to any researcher in the field of ant-angiogenesis.
There is no doubt that Endostatin and Angiostatin are synergistic. In fact it is estimated that the combination of Endostatin and Angiostatin could be up to 20 times more potent than either Endostatin aor Angiostatin alone.
You are partially correct that until RetinoStat Endostatin and Angiostatin have never been tried in combination in humans.
Endostatin has been used to treat hundreds of human patients. Can you name one case where endostatin treatment has caused even one serious adverse side effect in a human?
Angiostatin is very difficult and expensive to produce in the laboratory and human trials have been limitted to under one hundred people. Can you name even one aderse side effect reported in any human due to Angiostatin.
Both Endostatin and Angiostatin are safe because they are naturally found in every human and every mammal.
"...Endostatin, actually, is an interesting example of evolution. It is very old, at least 600 million years old. It is found in animals beginning from early worms onward, and its amino acids have been faithfully copied all these years. In primitive animals it was only used to guide nerve growth, but in more complex animals it is also used to guide vessel growth...."
"...1994 Lab discovered angiostatin, the first angiogenesis inhibitor found inside another protein...."
"...1997 Lab discovered endostatin, another angiogenesis inhibitor found inside a protein..."
"...How did angiogenesis inhibitors come to benefit eye medicine?
The capacity to reverse vascularization was an obvious boost to ophthalmology all along. But more than that, Evangelos Gragoudas, Joan Miller, Björn Olsen and colleagues have recently discovered that neovascular macular degeneration can actually be considered analogous to a deficiency disease of endostatin.3 Endostatin normally suppresses VEGF receptors. So they made a neovascular model in mice and successfully gave endostatin as replacement therapy. Endostatin replacement therapy may prevent neovascularization in the retina, and it has virtually no side effects..."
Read about endostatin from an interview at the American Adademy of Ophthalmology
http://www.aao.org/publications/eyenet/200711/feature2.cfmGOD bless,
George