September 21, 2017 / 10:00 PM / 2 years ago

Versartis growth hormone drug fails key study, shares sink

(Reuters) - Versartis Inc said its experimental drug for the treatment of growth hormone deficiency in children did not meet the main goal of a late-stage study, sending its shares tanking 85 percent.

The drug, somavaratan, is a long-acting recombinant human growth hormone.

The company said patients receiving somavaratan failed to show non-inferiority, compared with patients on Pfizer Inc’s drug, Genotropin.

Versartis’ stock, which closed at $21.60 on Thursday, were down at $3.70 in after-hours trading.

Reporting by Akankshita Mukhopadhyay in Bengaluru; Editing by Maju Samuel

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