Circassia Pharmaceuticals PLC is to terminate its deal with AstraZeneca PLC for the US commercial rights to the respiratory therapies Tudorza and Duaklir, handing them back to the big pharma in exchange for writing off looming loan repayments plus interest to the tune of $149.9m.
Shares in the firm rose by nearly 30% on the AIM as the biotech said it would now look forward...





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