LONDON--(BUSINESS WIRE)--BTG plc (LSE:BGC), the life sciences company, announces that the full results of the US phase II safety study of Varisolve® are being presented today at the American College of Phlebology (ACP) 22nd Annual Congress. The results confirm that treatment with Varisolve® in subjects with right-to-left (R-L) cardiac shunts, which may allow residual bubbles following treatment to enter the cerebral arterial circulation, does not cause cerebral injury.