Zafgen investors are clinging to any bit of hope they can, pushing the stock up after the obesity drug maker announced positive clinical trial data. Yet, safety signals still linger and an FDA clinical hold remains the largest obstacle to Zafgen moving beloranib forward.
The biotech's stock jumped 78.65%, or $4.42, to close at $10.04 on Jan. 20 after Zafgen announced that results of...






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