A new variant of interferon gets approval

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For those who dont know poly-ethylene glycol (PEG) is an anti-freeze, it is also a molecule that make molecules hang around the body for abit longer. When the weekly beta interferon 1a was running out of patent life it was given a PEG coat and it meant a new patent and a molecule that hangs around for two weeks. This is given under the skin, but this newly approved variant is given into the muscle. It is equivalent but it induces about 2/3 fewer injection site reactions.

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