ANTIMICROBIAL RESISTANCE SOLUTIONS
WITH DR. JOHN H. REX
Latest Newsletters
Dear All,In a paper that is clearly a labor of love (1,032 references!), Mark Butler and Robert Capon have summarized the history of 217 natural product-inspired antibiotics across 16 classes from penicillin to fidaxomicin! Here are the links you need:Butler MS, Capon RJ. Natural product inspired antibiotics approved for human use – 1943 to 2025. Natural Product Reports. 2026. DOI:10.1039/d5np00067j.There is also a supplemental .pdf providing for each antibiotic a ChemDraw structure diagram, its SMILES strings, and its InChl identifier and InChlKey key (InChlKey).And know as well that Mark is happy to be contacted at mark@msbchem.com if you have questions about the report.And finally, some definitions that may be helpful:Natural Product: A compound produced by a living organism. Fleming's initial discovery of penicillin was based on it being produced by a fungus.Semi-synthetic (or, a Natural Product Derivative): A modification of a natural product.Fully synthetic (or, Total Synthesis): Starting from readily available materials, build the desired molecule entirely from scratch. Each class of natural product is reviewed at length, starting with the original discovery and then discussing its semi-synthetic derivatives. Also surveyed are the companies behind these products (see below my signature for a chart showing the # of products by company for companies with ≥ 2 approved antibiotics).And when I...
Dear All,There are more details...
Latest Government Action
Dear All, I am pleased to learn that BARDA is holding a one-day innovation symposium on 20 Nov 2025. As you know, BARDA is a consistently creative funder of diverse medical countermeasures, including new antibiotics. For background, see these prior newsletters:22 Jul 2025 newsletter: "BARDA RFP: Antibiotic for HABP/VABP or Bloodstream Infection"5 Nov 2024 newsletter: "BARDA seeks deep insight on antibacterials near/beyond end-of-Phase 2"12 Nov 2023 newsletter: "Fireside Chat with BARDA’s Branch Chief for Antimicrobials".The video from this newsletter (see also below my signature) is highly recommended as a primer on that way that Team BARDA think about medical countermeasures!26 Sep 2023 newsletter: "BARDA Medical Countermeasures BAA: Substantial updates"BARDA's BAA-23-100-SOL-00004 is open through Sep 2028!As to the 1-day symposium, it runs 9a-5p ET on 20 Nov 2025 in Washington DC. Let me quote from the announcement (highlights added by me):"Join us in person for an engaging showcase of early-stage health security innovations supported by BARDA through our Division of Research, Innovation, and Ventures (DRIVe), the BARDA Accelerator Network, BARDA Ventures, BLUE KNIGHT, and CARB-X. "The symposium will bring together BARDA-supported innovators, U.S. government partners, investors, strategic partners, and other key stakeholders to highlight technologies and foster collaborations to advance the development of medical...
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R&D Insight
Dear All:Sweden has been a...
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Can you help?
Dear All,I have just learned that Lifeline, the musical formerly known as The Mould that Changed the World, is seeking scientists, medics, and healthcare professionals to be part of the cast for a portion of a planned 5-week off-Broadway run of the show around the time of the High-Level Meeting (HLM) on AMR at UNGA 2024 in New York City...
Dear All, Heads up! Having...
Note: Be sure to take...
Update on 11 October 2023: The...
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Dear All, Two items for...
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Antimicrobial resistance poses a catastrophic threat. If we don’t act now, any one of us could go into hospital in 20 years for minor surgery and die because of an ordinary infection that can’t be treated by antibiotics. And routine operations like hip replacements or organ transplants could be deadly because of the risk of infection.
AMR Fireside Chats
1/19 videos
1
Episode 18 w/Robin Hiley- Fireside Chat
19:48
2
Episode 17 w/ Ella Balasa and Rob Purdie of WHO Task Force of AMR Survivors - AMR Fireside Chat
38:24
3
Episode 16 w/ Ramanan Laxminarayan, PhD - AMR Fireside Chat
32:59
4
Episode 15 w/ Mark Albrecht, PhD - AMR Fireside Chat
43:55
5
Episode 14 w/ Lynn Silver - AMR Fireside Chat
56:23
6
Episode 13 w/ Kevin Outterson - AMR Fireside Chat
30:01
7
Episode 12 w/ Tina Joshi, PhD - AMR Fireside Chat
34:22
8
Episode 11 w/ Martin Heidecker - AMR Fireside Chat
32:31
9
Episode 10 w/ Anna Govett - AMR Fireside Chat
14:54
10
Episode 9 w/ Fatema Rafiqi, PhD - AMR Fireside Chat
34:10
11
Episode 8 w/ Ghada Zoubiane, PhD - AMR Fireside Chat
35:04
12
Episode 7 w/ Trevor Lithgow, PhD - AMR Fireside Chat
35:41
13
AMR Snapshots: Episode 2 - John Rex (Editor-In-Chief, AMR.Solutions)
26:25
14
Episode 6 w/ Maryn McKenna - AMR Fireside Chat
45:50
15
Episode 5 w/ Christine Årdal - AMR Fireside Chat
43:44
16
Episode 4 w/ Peter Beyer - AMR Fireside Chat
39:21
17
Episode 3 w/ Kevin Outterson - AMR Fireside Chat
11:45
18
Episode 2 w/ Henry Skinner, PhD - AMR Fireside Chat
15:44
19
Episode 1 w/ Kevin Outterson - AMR Fireside Chat
52:56
Chemical vs. drugs (Part 2): How do you discriminate? / More on halicin
This newsletter is part of a series — here are the links to Part 1, (this one is Part 2), Part 3, Part 4, and Part 5. Also relevant ...
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UK to expand NHS Subscription Pilot! Consultation Period launches
Dear All (and with thanks to Kevin for co-authoring), The UK NHS England Pilot is known to us all as the first real attempt at an antibiotic ...
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New mechanisms for antibiotic reimbursement in the United States: CMS’s IPPS FY2020 Final Rule
Dear All (and with thanks to Kevin Outterson for substantial help with this newsletter), On August 2, 2019, the US government agency that administrates Medicare & ...
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Draft FDA guidance on anti-infectives for children: It’s (mostly) all about PK and safety
Dear All (wonkish alert … the first 3 segments are non-wonkish but the last 2 are in the wonkish zone … titrate your plasma caffeine ...
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Push! Pull! Push! Pull! / Highlights from Davos 2018
Dear All: Three important documents were released at / during / around the World Economic Forum meeting that occurred this week in Davos. First and foremost, ...
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Modeling the value of an effective antibiotic — Megiddo et al.
Dear All: I have previously written about the challenge of applying health technology assessment (HTA) to estimate the monetary value of an effective antibiotic: To my knowledge, ...
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Global survey of novel antibiotic reimbursement models / PASTEUR Act introduced to US House
Dear All (wonkish alert, but the details are fascinating … and with thanks to Kevin Outterson for co-authoring!), Two related items of note for today. ...
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Impact of PASTEUR: 9.9m lives saved, ROI of 125:1
Dear All (and with thanks to Kevin Outterson for being lead author on this newsletter), (wonkish alert on this one … refresh your coffee and ...
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COVID-19 and the Long-Term Trajectory of AMR Efforts: Wellcome Trust Deep Dive
Dear All (Wonkish alert! Coffee-up!), Today we have something special: A deep-dive into the future trajectory of AMR-related work developed by Wellcome Trust. The newly ...
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The hunt for oral antibiotics: Beyond Lipinski’s Rule of Five
Dear All: Given our collective interest in finding oral antibiotics, a recent article in J Med Chem on the evolution of our understanding of Lipinski’s ...
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FDA and EMA regulatory updates / Fireside chat during the 4th AMR Conference
Dear All (lots and lots of wonkish detail here, be sure your blood caffeine level is adequate!), During the 24-28 Aug 2020 BEAM Alliance-sponsored AMR Conference ...
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FDA Workshop: Animal models in support of narrow-spectrum agents for A. baumannii and P. aeruginosa
Dear All: FDA today hosted their eagerly awaited workshop on animal models in support of narrow-spectrum agents for A. baumannii (Abau) and P. aeruginosa (Pae). It was a really ...
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The thoughtless person playing with penicillin treatment is morally responsible for the death of the man who succumbs to infection with the penicillin-resistant organism.
The bipartisan PASTEUR Act is the strongest bill ever written to strengthen antibiotic development and use. It will fix our market failures, expand the pipeline for next generation antibiotics, and save lives. We can’t sit on our hands as this public health crisis arrives – we have to act now.
Summaries
Notes: Newsflash ... BARDA have...
Aside: If you've enjoyed the...
See also This related newsletter:...
Dear All (and with thanks...
Dear All (Wonkish alert! Coffee-up!),Today...