Nottadoc, TSH stands for Thyroid Stimulating Hormone and endogenous TSH means the bodies own source of TSH instead of an external source of TSH.
There may be a lot of factors why endostatin had limited success and TSH could be one of them. Instead of trying to tailor the endostatin dose to every individual it may be a lot easier to combo endostatin and correctly give the drugs in a proper sequence, IMHO.