Inhibrx Inc. and Sanofi SA have agreed to a deal worth up to $2.2 billion, whereby the latter’s Aventis Inc. subsidiary will acquire INBRX-101, an optimized, recombinant alpha-1 antitrypsin (AAT) augmentation therapy undergoing a registrational trial for AAT deficiency (AATD), an inherited genetic disorder caused by single nucleotide variants in the SERPINA1 gene.