GSK is acquiring an experimental medicine from a Cambridge biotech to shore up its drug pipeline and muscle into the promising field of liver therapies.

GSK will buy efimosfermin, a liver disease drug in late-stage trials, for up to $2 billion from U.S. biotechnology firm Boston Pharmaceuticals, the British drugmaker said on Wednesday. Efimosfermin, a monthly subcutaneous injection,

GSK plans to purchase an experimental drug for the liver disease MASH from Boston Pharmaceuticals for $1.2 billion upfront.