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The U.S. Food and Drug Administration has approved Sanofi and Regeneron's blockbuster drug Dupixent for patients with a chronic lung disease, commonly known as "smoker's lung", the companies said on Friday.

Key Takeaways Regeneron and Sanofi shares edged higher Friday after their drug to treat chronic obstructive pulmonary disease (COPD) received approval from the Food and Drug Administration (FDA).The drug,