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BioWorld - Friday, January 2, 2026
Home » Keywords » Spero Therapeutics Inc.

Items Tagged with 'Spero Therapeutics Inc.'

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Index insights

Spero leads infectious disease gains with 252% stock jump

Aug. 7, 2025
By Amanda Lanier
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Infectious disease biopharma stocks bounced back in June and July, with the BioWorld Infectious Disease Index (BIDI) closing July up 4.34%. This marked a sharp reversal from earlier in the year, as the BIDI had dropped 17.83% by the end of April and 21.04% by the end of May.
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Spero with white knight GSK succeed with UTI treatment

May 28, 2025
By Lee Landenberger
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GSK plc knew a good thing when it swooped in nearly three years ago to rescue Spero Therapeutics Inc.’s oral antibiotic from a complete response letter (CRL). New pivotal phase III study data showed tebipenem pivoxil hydrobromide (HBr) for complicated urinary tract infections (cUTI), including pyelonephritis, hit its primary endpoint.
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Avoiding losses results in insider trading settlement

Oct. 17, 2024
By Mari Serebrov
Insider trading isn’t always about profits. Sometimes it’s avoiding losses. That’s the basis of the U.S. SEC’s complaint against Matthew Groom, an information technology consultant to Spero Therapeutics Inc. Groom agreed Sept. 15 to a $28,000 settlement to resolve the complaint stemming from a trade of Spero shares that enabled him to avoid $13,000 in losses when news of the company’s downsizing and issues with its lead product became public two years ago.
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AN2 sinks on phase III pause in mycobacterial lung disease

Feb. 12, 2024
By Jennifer Boggs
AN2 Therapeutics Inc.’s decision to pause enrollment in the phase III portion of its phase II/III testing epetraborole in treatment-refractory Mycobacterium avium complex lung disease, citing potentially lower-than-expected efficacy from a blinded aggregate analysis of the phase II portion, left analysts and investors with little to do but speculate on the program’s viability going forward.
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GSK forges on with antibiotic R&D as gepotidacin hits targets in phase III

Nov. 3, 2022
By Richard Staines
GSK plc has announced it has stopped early two pivotal phase III trials of its urinary tract infection drug, gepotidacin, for efficacy and is preparing regulatory filings for what could be the first new oral antibiotic for the disease in more than 20 years.
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Dollar signs in blister packs

Spero signs $600M license deal for UTI antibiotic with GSK – three months after FDA rejected it

Sep. 22, 2022
By Richard Staines
Spero Therapeutics Inc. has come out swinging after a U.S. FDA rejection for its oral antibiotic, tebipenem Hbr, picking up a potential $600 million licensing deal with pharma giant GSK plc after agreeing on a plan with the regulator to revive the drug.
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US FDA rejects Spero’s oral antibiotic tebipenem, demanding further trial

June 28, 2022
By Richard Staines

Spero Therapeutics Inc.’s oral antibiotic, tebipenem Hbr, has been rejected by the U.S. FDA for adults with complicated urinary tract infection, after the regulator said a further trial is needed for approval.


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Uncertainty hits Spero’s stock as FDA cites ‘deficiencies’ in ongoing NDA review

April 1, 2022
By Jennifer Boggs
Executives of Spero Therapeutics Inc. evaded analysts’ attempts to clarify “deficiencies” noted by the U.S. FDA in its ongoing review of the company’s NDA seeking approval of oral carbapenem antibiotic tebipenem HBr for complicated urinary tract infections (cUTIs), emphasizing instead that they have three months to work with the regulator ahead of a June 27 PDUFA date assigned to the application.
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Anti-infective drugs speed through clinical development and regulatory approvals

Sep. 28, 2020
By Brian Orelli
Anti-infective drugs approved over the last two decades were able to get through the clinical development and FDA approval processes substantially faster than other drugs, according to a new report from the Tufts Center for the Study of Drug Development.
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Enterobacteriaceae

Deeply unSURE: Iterum’s phase III failure in UTI may end the company

June 1, 2020
By Lee Landenberger
Two phase III stumbles of Iterum Therapeutics plc’s sulopenem have cast the company’s future in doubt. The latest problem is the failure of the penem anti-infective compound, with oral and I.V. formulations, failing to achieve statistical noninferiority relative to ertapenem in treating complicated urinary tract infection (cUTI).
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