BRIEF-Sonus, Genband to combine
* Sonus and GENBAND to combine to create a global leader in real-time communications software solutions
March 2 PTC Therapeutics Inc said on Thursday it would stop developing its cystic fibrosis drug after it failed to meet the main goal of a late-stage study.
Cystic fibrosis is among the most common life-threatening genetic disorders worldwide and is caused by defects in a single gene known as the cystic fibrosis transmembrane conductance regulator. (Reporting by Akankshita Mukhopadhyay in Bengaluru; Editing by Savio D'Souza; Editing by Savio D'Souza)