by Giuliana Miglierini
Antimicrobial resistance (AMR) is the consequence of mutations that allow microbes to survive pharmacological treatment. Resistant strains can often be tackled only by a limited number of therapeutic options: according to a systematic analysis published in The Lancet, an estimated 1.27 million deaths occurred in 2019 due to unresponsiveness to available medicines.
As a part of its effort against AMR, the International Coalition of Medicines Regulatory Authorities (ICMRA) has published a report discussing successful regulatory and non-regulatory best practices in the field of AMR.
The report was drafted by ICMRA’s Work Group led by Health Canada, and inclusive also of the European Medicines Agency, UK’s MHRA, and regulators from Japan, Argentina, Nigeria, Saudi Arabia and Sweden. For each of the nine case studies, Annex 2 presents a table summarising the problem under examination, the proposed solution, results and consequent recommendations.
Regulatory flexibility
The US’ Biomedical Advanced Research and Development Authority (BARDA) focused on innovative approaches to developing supporting data packages required for regulatory review of certain non-traditional therapies. Public-private partnerships are the preferred vehicle to manage R&D projects and to reach regulatory approval by the FDA. The main targets for BARDA are new antimicrobials to treat antibiotic-resistant secondary bacterial infections and bioterrorism infections. Selected proposals shall lead to the development of candidate medical countermeasures (MCMs), based on a regulatory master plan inclusive of a tentative schedule for regulatory milestones. Partners may also benefit from BARDA’s expertise in the field of animal studies, flexible manufacturing and clinical study design. A Memorandum of Understanding was also signed with the FDA to provide a coordinated framework for the development of MCMs.
Antimicrobials for veterinary use
Antimicrobials for veterinary use include some products for human use. It is thus important to act in the animal sector to limit the selection pressure for the development and spread of resistant pathogens in both animals and humans.
The project led by Health Canada in collaboration with the Public Health Agency of Canada (PHAC) focused on the implementation of the Veterinary Antimicrobial Sales Reporting (VASR) system, aimed to collect data on the total quantity of antimicrobials sold or compounded by animal species. The activation of the system in 2018 followed some changes to Canada’s Food and Drugs Regulation (FDR): manufacturers and importers have to report annual sales of medically important antimicrobials intended for veterinary use based on active ingredients listed in List A. The acquired data are collected and screened by the Veterinary Drugs Directorate and validated and analysed by PHAC’s CIPARS.
Regulatory agilities during the Covid-19 pandemic
Regulatory flexibility has been one of the main tools used to respond to the Covid-19 pandemic. Health Canada’s main goal was to expedite the regulatory review of health products without compromising their safety, efficacy and quality standards. A temporary regulatory pathway was introduced in September 2020 by a Interim Order, and new transition measures were approved in September 2021 to allow the review, authorisation and oversight of Covid-19 medicines under the FDR. A procurement strategy for Covid vaccines, treatments and diagnostics was also adopted by the Government, based on advanced purchasing agreements with different companies. Another Interim Order allowed the activation of a temporary regulatory pathway to facilitate clinical trials of candidate Covid-19 products. Flexibilities to Drug Establishment Licensing (DEL) and GMPs were also introduced, and collaborations with other international regulatory bodies activated (including the EMA open pilot).
Non-prescription availability of antibiotics
UK’s MHRA focused on the case of tyrothricin-containing lozenges, a combination product available for sale at pharmacies since 1968, and that underwent a restriction of prescribing in 2018, following a NHS’s guidance advising prescriptions for the treatment of acute sore throats should not be routinely offered in primary care. The UK’s Commission on Human Medicine considered MHRA’s request of advice on the feasibility to remove the product from the market. As a result, the MHRA interacted with the Marketing authorisation holder to verify the possibility of a reformulation to exclude the antibiotic active ingredient. The action of impacted also on the education of the wider public towards the responsible use of antibiotics.
Reimbursement models for novel antimicrobials
The Public Health Agency of Sweden addressed the issue of antimicrobial market failure. Not all the few available antibiotics launched during the last decade are accessible in all European countries, due in some instances to unfavourable sales prospects. A pilot project was launched in 2018 to test a new, partially delinked reimbursement model based on a minimum annual guaranteed revenue at nation level for the pharmaceutical company (on the basis of estimated clinical needs). Security of supply of antibiotics within 24 hours and a security stock located in Sweden were the requests to interested companies.
Selective antibiograms to inform antimicrobial choice
The choice of the most appropriate antimicrobial is usually based on an antibiogram, a laboratory test used to evaluate the susceptibility and resistance profile of bacterial isolates to various antimicrobial active ingredients. The Swedish Medical Products Agency (SMPA) focused on the use and selective reporting of antibiograms of urinary cultures for Enterobacteriaceae from patients with symptoms of cystitis. The analysis included six different antibiotics for men and five for women, since the fluoroquinolone ciprofloxacin is no longer recommended to treat cystitis in women. This selective reporting allowed to decrease fluoroquinolone prescriptions of 46% in 15 years.
Feedback on prescriber data
SMPA also provided some feedback to prescribers on their antibiotic prescribing practices. The tool was implemented at the national, regional, local and also individual level, in order to raise knowledge and information, and influence prescription habits. Prescribers’ data at a high resolution level (prescriber identifying codes) are used to elaborate relevant trends. Statistics on antibiotic use at regional and national level are freely accessible at the National Board of Health and Welfare website.
Common infections in outpatient care
The Sweden’s Rainbow Pamphlet provides treatment recommendations for common infections in outpatient care. The initiative was launched in 2010 by the Swedish Strategic Programme for the Rational Use of Antimicrobial Agents and Surveillance of Resistance (STRAMA); it can be accessed in paper form or through the STRAMA mobile application. The use of the Rainbow pamphlet has been supported also by communication campaigns targeted both to healthcare professionals and the public.
Methods for monitoring AMR in the environment
The monitoring of antibiotics’ diffusion in the environment is relevant with respect to the One- Health approach, which focuses on the harmonised surveillance across human, veterinary and food sectors.
The SMPA launched two projects aimed to better identify indicators to be used for the monitoring of antibiotic resistance in the environment: EMBARK (Establishing a Monitoring Baseline for Antimicrobial Resistance in Key environments) and Antibiotikasmart Sverige (Antibiotic Smart Sweden). The current main gaps in knowledge include the abundance and prevalence of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) occurring naturally. Furthermore, antimicrobials may enter the environment at different points along the lifecycle of human and veterinary medical products, with processes still to be fully clarified.
EDQM introduces a consultation phase in the management of CEP documents
by Giuliana Miglierini
The new process implemented by the European Directorate for the Quality of Medicines and HealthCare (EDQM) for the elaboration of documents related to the Certification of Suitability (CEP) procedure includes a newly inserted consultation phase. This new step, which may be public or targeted to specific groups of stakeholders, aims to increase the transparency of the elaboration process and offers stakeholders the possibility to forward comments to the draft documents in order to optimise them.
Transparency and efficiency are also the main goals inspiring the overall new elaboration process, which covers the entire pathway of CEP documents, from development, through consultation, up to final adoption, publication and implementation.
A dedicated page on the EDQMs’s website will host the documents open to consultation, together with the respective instructions for the stakeholders wishing to submit comments. Announcements on new documents available for consultation will be made on EDQM Certification webpages. The CEP Steering Committee will be responsible for the elaboration process for CEP documents, in compliance with the EDQM document CEP Terms of Reference and Rules of Procedure (PA/PH/CEP (01) 1).
The elaboration process will cover both public documents (the main part), as well as those the CEP Steering Committee would indicate as restricted for use by the bodies involved in the CEP procedure. The new process does not cover the Resolution on the Certification procedure, which falls under another specific process established by the Council of Europe.
A guidance to understand the new process
The management of CEP guidelines and operational documents for the CEP procedure has been described in a specific guidance issued in November 2022 by the EDQM’s Certification of Substances Department.
The guidance covers a broad range of documents participating from different perspectives to the CEP procedure. The elaboration of the different types of documents may slightly differ from one another, with possible exemptions from some steps, for example in the case of minor revisions (which in any case always have to be full justified and documented). All CEP documents will be drafted in English; the guidance provides indication of the format to be used to establish the unique reference code for governance documents and technical guidelines (PA/PH/CEP (XX) YY), as well as for the revision number (ZR) where needed.
The EDQM specifies that the implementation date of the newly approved CEP documents will be such to allow interested parties to have enough time to comply with the new or revised requirements.
Governance documents define procedural aspects for the practical implementation of the CEP procedure. The initial draft will be prepared by the EDQM and reviewed and agreed upon by the CEP Steering Committee before entering the consultation phase. Comments collected will serve as the basis to consolidate the final version of the document. A second round of consultation may be needed in case of critical comments preventing finalisation. The adoption of the final document falls under the responsibility of the CEP Steering Committee, which may also indicate the need to improve and re-submit the draft before adoption. Once the final version of the document is available, its publication on the EDQM’s website and implementation will close the process.
Technical guidelines inform about the requirements applicants should fulfil for the submission or evaluation of CEP applications. Their drafting may be initiated also by members of the relevant Technical Advisory Board (TAB), in addition to the EDQM. The TAB is also called to review and agree upon the draft document before the assessment and approval by the CEP Steering Committee and the following consultation phase can take place. The same applies to the consolidation of comments and finalisation of the document, that has to be approved by the relevant TAB. In this case too, a second round of consultation is possible should criticalities arise during the first one, followed by adoption by the CEP Steering Committee (and a possible second round of updating and approval by the TAB, if needed), and publication and implementation.
The management of specific aspects of the procedure can be supported by the issuing of administrative or operational documents. These documents fall under the responsibility of the EDQM, that may consult the CEP Steering Committee of other parties where necessary.
The consultation phase
A specific chapter of the EDQM’s guidance describes the newly inserted consultation phase, those details (type of process and duration) will be decided on a case-by-case basis by the CEP Steering Committee.
In the case of a public consultation, the draft document will be made available at the dedicated page of the EDQM website. The draft may also be sent to identified relevant stakeholder organisations, to ensure a better awareness of the ongoing process.
Targeted consultations aim to obtain feedback from selected stakeholders on specific areas of intervention. In such instances, the forwarding of the draft document will be restricted only to identified interested parties, including regulators and relevant industrial associations or other organisations.
According to the type of document and/or the topic under consultation, the consultation phase may vary in duration. To this instance, the guidance indicates a possible range between 3 weeks and 3 months, with the effective duration to be communicated as a part of the call for consultation. A template will also be available to submit comments, which should be always justified and contain concrete proposals for action to tackle the issue under consideration. All comments and justifications received will be transmitted to the groups in charge of approving and adopting the documents.
At the end of the elaboration process, the final approved versions of CEP documents will be published on the EDQM’s website.