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Hemispherx takes beating on US FDA rejection for Ampligen, again

This article was originally published in Scrip

Executive Summary

Shares of Hemispherx Biopharma plummeted nearly 20% in after-hours trading on 4 February after the company revealed the US FDA refused to approve Ampligen (rintatolimod) as a treatment for chronic fatigue syndrome – declaring in a complete response letter (CRL) the firm must conduct at least one additional clinical trial, complete various nonclinical studies and perform a number of data analyses.



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