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Johnson & Johnson has signed an agreement to purchase Cambridge, Massachusetts–based Momenta Pharmaceuticals for about $6.5 billion. The offer is a 70% premium on Momenta’s stock value before the announcement. J&J is interested in Momenta’s nipocalimab, an experimental antibody designed to target FcRn, a neonatal receptor associated with automimmune diseases. J&J says nipocalimab could be commercialized for multiple diseases, some of which could yield annual sales of over $1 billion.
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