7 Nov 2017 FDA VRBPAC: Clinical development plan for a S. aureus vaccine (Part 1 of 3)

Addendum: This is the first in a 3-newsletters series on this topic. Go here and here for the next two newsletters. Finally, the results of the STRIVE trial have been published as Hassanzadeh et al. in Clinical Infectious Diseases, ciad218, https://doi.org/10.1093/cid/ciad218.

Dear All: 

I just learned that FDA’s Vaccines and Related Biological Products Committee (VRBPAC) will meet at White Oak in an open session on 7 Nov 2017 to discuss and make recommendations on the clinical development plan for Pfizer’s investigational Staphylococcus aureus vaccine intended for pre-surgical prophylaxis in elective orthopedic surgical populations. The only materials available are the announcement at this link — more materials are promised no less than 2 business days in advance.

This is really interesting to see. We’ve had prior debates on this topic that have revolved around these questions:

  1. Can you use eradication of carriage as a measure of the value of prophylactic agent?
  2. How big does the study have to be if you must show reduction in a serious (non-trivial) clinical infection?
  3. In what population can you do this?


In general the answers to date have been NO, VERY LARGE, and NOT SURE. The answer of NO for Q1 is well stated in the 23 Oct 2013 EMA Addendum (Section 3.5.3): Indications that relate to the reduction or eradication of a pathogen from a specified body site are not acceptable unless the microbiological effect of active treatment has been shown to result in a measurable clinical benefit. In the absence of adequate data to support such a link, the clinical benefit associated with the effect of treatment on carriage should be demonstrated in a placebo-controlled study with a primary clinical endpoint.

The final NOT SURE answer follows in part because the moment you identify a group at real risk, there is an ethical requirement to do everything you can to reduce the rate of infection (e.g., use really good peri-operative antibiotic prophylaxis). And the VERY LARGE follows from the need to then limit studies to a setting where the risk of infection is low!

Although it is important that we have tools of this type, the difficulties implied by these answers have stymied work to date. I am delighted to see this VRBPAC announcement and look forward to hearing the discussion!

All best wishes, –jr

John H. Rex, MD | Chief Medical Officer, F2G Ltd. | Expert-in-Residence, Wellcome Trust. Follow me on Twitter: @JohnRex_NewAbx. See past newsletters and subscribe for the future: http://amr.solutions/blog/

Upcoming meetings of interest to the AMR community:

Dear All,
 
The IDWeek 2024 program committee is again seeking programs on novel antimicrobial agents and novel diagnostics for presentation in pipeline sessions! Here’s what is sought:

  • “Industry partners are invited to submit antimicrobials that are in preclinical stages of development (Phase II and III preferred) or recently approved after January 2024.
  • “The pipeline sessions will include antibacterials, antifungals, and antivirals (excluding COVID-19 and HIV).
  • “The committee also invites companies developing novel diagnostic technologies with a minimum of some preliminary proof of concept data to submit.” 

This is a great opportunity to tell the story of your development project! The deadline to submit is Wednesday, June 26 via the application portal. Any questions should be directed to program@idsociety.org. Please share this email with anyone you think might be interested in applying!
 
In addition, I’ll also note that those with a more general story to tell should look at the BugHub Stage (and the Global BugHub stage). Both BugHub variants seek “presentations that touch on your experience of working in infectious diseases and presentations that ultimately lead to a greater understanding of our diverse field” via a TED Talk-esque speech about your work. The deadline for applications is 26 June, the same as for the pipeline sessions.

I look forward to seeing you there! All best wishes, –jr

John H. Rex, MD | Chief Medical Officer, F2G Ltd. | Operating Partner, Advent Life Sciences. Follow me on Twitter: @JohnRex_NewAbx. See past newsletters and subscribe for the future: https://amr.solutions/blog/. All opinions are my own.

John’s Top Recurring Meetings

Virtual meetings are easy to attend, but regular attendance at annual in-person events is the key to building your network and gaining deeper insight. My personal favorites for such in-person meetings are below. Of particular value for developers are the AMR Conference and the ASM-ESCMID conference. Hope to see you there!

  • 27-30 April 2024 (Barcelona, Spain): 34th ECCMID, the annual meeting of the European Society for Clinical Microbiology and Infectious Diseases. Go here for details. 
  • 17-20 Sep 2024 (Porto, Portugal): ASM/ESCMID Joint Conference on Drug Development to Meet the Challenge of Antimicrobial Resistance. Go here for the meeting’s general website. You can’t register (yet) for the 2024 event, but save the date!
  • 16-20 Oct 2024 (Los Angeles, USA): IDWeek 2024, the annual meeting of the Infectious Diseases Society of America. Save the date! More details to come!
  • 25-26 February 2025 (Basel, Switzerland): The 9th AMR Conference 2025. Go here to register

Upcoming meetings of interest to the AMR community:

  • [NEW]  9 Apr 2024 (virtual, 830a-10a ET): GARDP’s next REVIVE webinar entitled “Progressing a discovery project – Criteria and challenges.” Register here.
  • [NEW] 9 Apr 2024 (virtual, 10a-1130a ET): CDC webinar “Impacts of Antimicrobial Resistance on Cancer Care.” Click here for details and to register.
  • 10-11 Apr 2024 (virtual): Sepsis Alliance AMR Conference, a 2-day conference focused on “Practical technologies to manage sepsis and counteract the expanding challenge of antimicrobial resistance.” Go here for details and to register.
  • 26 Apr 2024 (Barcelona, Spain): ESCMID workshop entitled “Using Data Science and Machine Learning for Infection Science: A Hands-on Introduction.” Click here to register or here for more details. 
  • 27-30 April 2024 (Barcelona, Spain): 34th ECCMID, the annual meeting of the European Society for Clinical Microbiology and Infectious Diseases. See Recurring Meetings list, above.
  • 26-31 May 2024 (Montreal, Canada): EDAR7, the McGill AMR Centre’s 7th edition of their Environmental Dimension of Antimicrobial Resistance conference. Go here for details; final abstract deadline is 21 Dec 2023.
  • 28-29 May 2024 (in person, Uppsala, Sweden): Uppsala Antibiotic Days, a broad-ranging 2-day program hosted by the Uppsala Antibiotic Center. Go here for details and to register.
  • [NEW] 30-31 May 2024 (face-to-face in Rockville, Maryland as well as online, 8.30-5.30p ET on 30 May, 9-2.40p on 31 May): NIAID-sponsored workshop entitled “Towards realizing the promise of adjunctive immune therapy for invasive fungal infections”. The agenda covers host immunity to invasive fungal infections, immune modulators in the context of fungal infections; and strategies for testing immune modulators as adjunctive therapy. Go here for more details and to register.
  • 9-13 June 2024 (in person, Ascona, Switzerland): “New Approaches to Combat Antibiotic-Resistant Bacteria, 2nd Edition” is a Sunday-Thursday residential workshop focused on the deep biology of AMR. Sponsored by NCCR AntiResist (a Swiss National Science Foundation consortium), the scientific program has the feel of a Gordon Conference. Space is limited, so you are encouraged to apply promptly — go here for details.
  • 13-17 June 2024 (Atlanta, Georgia): ASM Microbe, the annual meeting of the American Society for Microbiology. You can’t register yet, but you can go here for general details.
  • 17-20 Sep 2024 (Porto, Portugal): ASM/ESCMID Joint Conference on Drug Development to Meet the Challenge of Antimicrobial Resistance. See Recurring Meetings list, above.
  • 16-20 Oct 2024 (Los Angeles, USA): IDWeek 2024, the annual meeting of the Infectious Diseases Society of America. See Recurring Meetings list, above. 
  • 19-27 Oct 2024 (Annecy, France, residential in-person program): ICARe (Interdisciplinary Course on Antibiotics and Resistance). Now in its 8th year, Patrice Courvalin directs the program with the support of an all-star scientific committee and faculty. The resulting soup-to-nuts training covers all aspects of antimicrobials, is very intense, and routinely gets rave reviews! Seating is limited, so mark your calendars now if you are interested. Applications open in March 2024 — go here for more details.
  • 4-5 Dec 2024 (in person, Washington, DC): “Fungal Dx 2024: Fungal Diagnostics in Clinical Practice” is a 2-day in-person workshop organized by ISHAM‘s Fungal Diagnostics Working Group. The program and registration links are available at https://fungaldx.com/; the agenda is comprehensive and features an all-star global list of speakers.

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