Shares of Protagonist Therapeutics Inc. (NASDAQ:PTGX) climbed 93.9% on Oct. 11 after the FDA removed a full clinical hold on studies of the rusfertide, the company's investigational treatment for the blood disorders polycythemia vera and hereditary hemochromatosis. Triggered by a finding of malignant skin tumors in mice treated with the drug disclosed on Sept. 17, the FDA's three-weeks-ago hold had pushed Protagonist shares down by as much as 72%.

Targeted therapies are a classical example of a glass that can be seen as half full or half empty.

PARIS – A Russian research consortium has discovered that coating magnetic nanoparticles with a non-magnetic silica shell significantly decreased the viability of cancer cells in a low frequency alternating magnetic field. This discovery may augur new therapeutic prospects for nanotechnology combined with medical imaging.

TORONTO – Radialis Medical Inc. has submitted FDA premarket notification for a positron emission tomography system (PET) that targets specific organs for low dose imaging and may be flexible enough to assess many different diseases. The Radialis PET camera is under clinical investigation at Toronto’s University Health Network and Princess Margaret Cancer Center for its ability to assess anomalies in breast cancer.