FDA Complete Response Letter for Spero NDA

FDA has issued a complete response letter for a Spero Therapeutics NDA for tebipenem HBr oral tablets to treat adult patients with complicated urinary tract infections, including pyelonephritis. The agency had previously set 6/27 as the PDUFA action date for the NDA.

The company says FDA found that the NDA could not be approved in its present form because the company’s ADAPT-PO Phase 3 study was insufficient to support approval and further clinical study will be required.

Spero says it will request a meeting with FDA officials “to gain further insights as to the pathway towards a potential regulatory approval for tebipenem HBr.”

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