BIOINVEST BREAKING NEWS – Celldex (CLDX) After the close on Friday, Regeneron and Sanofi announced that the FDA issued a Complete Response Letter (CRL) for Dupixent (“Dupi”) in chronic spontaneous urticaria (CSU). With an expected 2-year delay (or more), this is a major setback for Dupi. And hence, we believe it (…more)