EMA’s 3-year work plan for the Quality domain

July 7, 2023

Annex 11, Annex 15, Annex 16, Annex 4, Annex 5, assessor-inspector joint inspections, autogenous veterinary vaccines, Chapter 4, cooperative supervision, decentralised manufacturing, distant assessment, ema, EudraGMDP records, GMDP IWG, GMP Guide, GMP standards, guidance on data integrity, harmonised approaches, hybrid inspections, ICH Q12, ICH Q13, ICH Q7, ICH Q9, ICRMA, inspection capacity, inspections of the repositories system, International API programme, MAHs responsibilities. Nitrosamines LLE report, mutual recognition agreements. MRAs, new manufacturing technologies, novel veterinary medicinal products, PIC/S, reliance, scientific advice, security, sharing of information, sterile inspections, strategic goals, supply chain, supply chain dependance, tactical goals, traceability, Veterinary Regulation, work plan for the Quality domain

by Giuliana Miglierini

The European Medicines Agency has released the input notes made by the GMDP Inspectors Working Group (IWG) as for the drafting of the 3-year workplan for the Quality domain. The document, which reflects the objectives of the Network Strategy and Regulatory Science Strategy, addresses many aspects which may affect the overall efficiency of the pharmaceutical supply chain, both at the routine and specific level.

The document identifies a number of strategic goals aimed at improving the overall integrity and resilience of the pharmaceutical supply chain and the product quality, and to optimise the im-pact of new technologies. Description of the tactical goals follows, i.e., the projects and actions to be activated in order to reach the above-mentioned strategic objectives.

Improved traceability of the supply chain

Strategical goals include the enhancement of traceability, oversight and security for both the human and veterinary medicine supply chain. Four different actions are planned at the tactical level, starting from a better sharing of information regarding manufacturers, distributors, pro-ducts and their respective compliance. To this instance, actions to improve EudraGMDP records are expected.

Inspections of the repositories system should also be tackled by means of a liaison with the Ex-pert Group in inspectional procedures. The implementation of the new Veterinary Regulation should be addressed paying attention both to GDP for veterinary medicines and active substances. Improvement of the inspection capacity may benefit from the development of a specific training curriculum for GDP inspectors; to this instance, the IWG suggests a possible collaboration with PIC/S, through the EU4Health Joint Action 11 and the associated Work Programme 6.

Enhanced inspector capacity

Another strategic goal set forth by the GMDP IWG aims to improve inspector capacity building at EU and international level. To this regard, suggested actions include the support to the international API programme, comprehensive of the provisions of the new Veterinary Regulation related to API inspections and controls. Veterinary specific GMP guideline annexes 4 and 5 should be harmonised in collaboration with PIC/S. The collaboration should also include ongoing initiatives on inspection reliance, in order to better identify barriers preventing member states from accepting inspection results from other trusted authorities. PIC/S and the International Coalition of Medicines Regulatory Agencies (ICRMA) should also collaborate with the GMDP IWG to reach an agreement on shared definitions, best practices and harmonised approaches for distant assessment and hybrid inspections. The pilot programme for sterile inspections should be also finalised, with participation of all member states. Routine assessor-inspector joint inspections are suggested, as well as a training course specific to the new Annex 1.

The development of a harmonised, EU level guidance on data integrity is the tool identified by the GMDP IWG to reinforce responsibility of marketing authorisation holders (MAHs) for product quality. This goal may be achieved by adapting the current guidance published in the form of Q&As into Chapter 4 and Annex 11 of the GMP Guide, in collaboration with the WHO and PIC/S. A better attention on MAHs responsibilities and to the supervision of API manufacturers should also build upon the recommendations contained in EMA’s lessons learnt report (LLE) on Nitrosamines.

Critical manufacturing sites and new technologies

The review of long-term risks resulting from dependency on limited number of manufacturers and sites should support a better supply chain resilience. The review should be aimed to the identification of sites manufacturing a significant number of products or producing medical pro-ducts for a significant number of markets within the European economical area (EEA). The GMDP IWG also suggests performing cooperative supervision of these sites between member states and other strategic partners.

A better understanding of the possible implications resulting from the introduction of new manufacturing technologies has been also deemed important to regulate the new supply chains. To this instance, the indication of the IWG is to consider if a specific GMP annex would be re-quired in order to support the adoption of new and innovative technologies. As for decentralised manufacturing, this topic should also be evaluated in the GMP Guide to medicinal products other than advanced therapies.

Amendments to current guidelines

The document of the GMDP IWG details the specific guidelines that would need consideration in view of the proposed interventions.

Many actions are planned to achieve their objectives by the end of 2023. More specifically, the IWG expects to provide the EU Commission with the final text of the GMP for novel veterinary medicinal products and for autogenous veterinary vaccines. GMPs should be also revised to include Nitrosamines LLE recommendations to MAHs, so to ensure adequate quality agreements are in place with manufacturers.

The same deadline should apply to the development of specific training material on ICH Q9, addressing risk identification and risk management. This action would support EU members of the Expert Working Group (EWG) and should be coordinated with the dedicated PIC/S expert circle. A similar action is planned with respect to ICH Q12 on lifecycle management and ICH Q7 (GMP for active substances), as well as to other quality guidelines for veterinary medicines. The GMDP IWG is also expected to support the EWG in developing the new ICH Q13 guideline on continuous manufacturing.

Annex 15 on the Qualification and Validation may be revised by Q2 2024 in order to include considerations on new technology in facilities, products and processes, including also the possible extension of LLE recommendations to APIs.

The end of 2024 is the date indicated for the review of GMPs for advanced therapy medicinal products in order to include the new provisions of the revised Annex 1. The same deadline applies to the possible revision of Annex 16 on the certification by a Qualified Person and batch release, in order to provide further guidance on batch traceability according to LLE recommendations. The end of next year may see also the drafting of the final text of Annex 4 on the manufacture of veterinary medicinal products other than the immunological ones, based on comments received on the concept paper and the resulting draft text. A similar action is planned for Annex 5 on the manufacture of immunological veterinary medicinal products.

Chapter 4 (Documentation) and Annex 11 (Computerised systems) of the GMP Guide should be revised to assure data integrity in the context of GMP. The proposed deadline for these actions is Q1 2026.

Support to scientific advice and communication

A specific chapter of the GMDP IWG document is dedicated to actions deemed to support scientific advice activities. In this case too, target dates are provided for the completion of the different actions. These include the provision to the EU Commission of scientific advice on GMP standards to be included in the implementing act on GMP for veterinary medicinal products and active substances.

At the international level, the IWG plans to continue its efforts to reach a better convergence through existing mutual recognition platforms and programmes and to support the EU Commission to establish and maintain mutual recognition agreements. Collaborations with ICRMA, the EDQM, Chinese and Indian regulators should be also continued, as well as the dialogue with interested parties and stakeholders.

The European Medicines Regulatory Network Data Standardisation Strategy

January 28, 2022

ADaM, CDISC SDTM, CDISC SDTM8, CDM, CeSHarP, common data model, data ethics, data governance, data protection, eAF, eCTD, eCTD v4.0, ema, EMRN, EMRN Strategy 2025, eRMP, EU Data Governance Act, EU Data Strategy, European Health Data Space, European Medicines Regulatory Network, GVP, HL7 FHIR, HMA, ICH E2C (R2), ICH E2E, ICH M11, ICSR, individual patient data, inspections, internal consultation, interventional studies, ISO IDMP, metadata, mHealth, observational studies, product information, PSUR, public survey, raw data, real-world data, regulatory documents, regulatory procedures, risk management, risk-based tracking procedures, RMP, RWD, safety, SDO, Standards Development Organisations, traceability

by Giuliana Miglierini

The availability of interoperable data is a “must” to ensure the smooth sharing, use and re-use of data along the entire regulatory process. A new document – the European Medicines Regulatory Network Data Standardisation Strategy – has been issued by the European Medicines Agency (EMA) and the Heads of Medicines Agencies (HMA) to provide guidance to all authorities members of the European Medicines Regulatory Network (EMRN) on how to approach issues related to the definition, adoption and implementation of international data standards.

As data contains the higher informative value, regulatory procedures are undergoing a phase of deep rethinking in order to pay greater attention to the underlying data, leaving behind the traditional assessment of regulatory documents prepared using those data. Furthermore, the secondary use of data may support optimised regulatory decision-making processes.

The EMRN Data Standardisation Strategy – one of the main deliverables of the HMA-EMA Joint Big Data Steering Group (BDSG) workplan – builds upon the EU Data Strategy and the goals of the EMRN Strategy 2025. The FAIR principles (Findable, Accessible, Interoperable and Reusable) have been identified to govern the acquisition, conservation and use of data.

A more standardised approach to be adopted by the EMRN shall make possible to reduce the current manual and technical workload needed to manage regulatory documents and data, which are often submitted using a variety of different formats. According to the Strategy, a review of the mechanisms of data governance is also needed to include the responsibilities for oversight of data standardisation work and for the periodic updating of the EMRN data strategy. Further assessment of the expected costs and benefits is needed to make available the final roadmap for the implementation and prioritisation of measures suggested by the Data Standardisation Strategy.

Adopt, adapt, develop

The document was drafted on the basis of initial internal consultations on current practices for the management of scientific data; the inventory of the current IT systems in use by members of the EMRN was also created. In a second phase, a public survey was conducted among all stakeholders; current and new standards under development were identified by analysis of a selection of Standards Development Organisations (SDOs) active in the healthcare sector.

The exercise led to the identification of three different categories of actions, respectively referred to the adoption by the EMRN of currently available standards, the adaptation of available standards to include additional requirements, and the development of entirely new standards.

A total of eight principles have been identified to guide the standardisation of data to be used for regulatory purposes. First of all, high-quality data standards developed by accredited SDOs should always be adopted, on the basis of voluntary and consensus-based processes. EMA-HMA’s suggestion is to use such standards in place of (unique) local or proprietary standards, unless not compatible with the EU legislation or otherwise impractical. This would also support the creation of the European Health Data Space (part of the EU digital strategy) and facilitate the sharing and re-use of data and the governance of data privacy according to the draft EU Data Governance Act. The principles of data protection and data ethics by design are another fundamental requirement, as well as the collaboration with stakeholders in order to be informed about their needs. An alignment and consolidation of requirements from other regulations and guidelines is also envisaged; assessment of requirements for both human and veterinary regulatory practices should be run in order to avoid duplication of efforts or creation of competing standards.

Four domains for the management of data

The EMRN Data Standardisation Strategy identifies four different domains for the adoption of common standards: Medicinal Product, Healthcare & study data, Safety & risk management and Submissions. Recommendations for each of the four domains are discussed in the document.

The Medicinal Product domain includes product information, substance information, manufacturing and quality information.

Standards such as the ISO IDMP (IDentification of Medicinal Products) – based on the HL7 FHIR (Fast Healthcare Interoperability Resources) standard – are already in place, for example, to feed EMA’s SPOR system, but additional FHIR resources would be needed to structure key product information in already existing projects. To this regard, the Strategy suggests to implement and adapt ISO IDMP specified substance group levels 2 and 4 by the associated HL7 FHIR message exchange format, so to capture active substances and excipients in a structured format. This approach would also better support inspections (together with the availability of a standardised template for all inspections data), traceability of the origin of all substances used to manufacture a certain medicinal product, and the adoption of risk-based tracking procedures to assess the interactions between product quality and inspections of manufacturing sites.

The Healthcare and study data domain refers to data acquired during clinical development (i.e. data from interventional and/or observational studies) and the development of a common data model (CDM) for individual patient data and mobile health (mHealth) devices.

Many projects are already active, e.g. the ICH M11: Clinical electronic Structured Harmonised Protocol (CeSHarP), an initiative that would need further tuning to include some additional requirements. The possible use of raw data from interventional studies is also under assessment (e.g. CDISC SDTM – Study Data Tabulation Model, and ADaM-Analysis Data Model).

A new CDM standard would also be needed to exploit the full and harmonised potential of real-world data (RWD) and metadata obtained from healthcare records and disease registries. To this instance, a particular attention should be paid to mHealth applications installed on personal smart-devices, a fast-growing segment giving rise to the availability to big quantities of data.

The Safety and risk management domain refers to pharmacovigilance activities and includes Individual case safety reports (ICSR), Product safety update reports (PSUR), and environmental risk assessment (ERA) and risk management plans (RMP).

ICSR might be optimised by adoption of the HL7 FHIR based messaging standard and the inclusion of -omics data (genomics, proteomics and metabolomics) of patients. According to the Strategy, a new structured, electronic format for PSURs built upon the ICH E2C (R2) periodic benefit- risk evaluation report guidelines would be also beneficial for the work of regulatory authorities. The CDISC SDTM8 standard for data collection of risk assessment data represents a possible option to better handle data referred to environmental risk assessments. A structured, electronic risk management plan (eRMP) format should be also created to overcome the current paper template format; the new standard may find inspiration in the ICH E2E Pharmacovigilance Planning guideline and the EU Guideline on good pharmacovigilance practices (GVP) Module V – Risk management systems.

The Submissions domain includes the dossier management and the structured application form. Version 4.0 of the electronic Common Technical Document (eCTD v4.0) is more flexible compared to the previous one; for example, it supports the re-use of Pdf documents across sequences and eCTD dossiers and the submission of other data formats within the dossiers. The wider use of structured data will make the use of Pdf files less common, in favour of electronic Application Forms (eAF) based on data exchange standards such as HL7 FHIR to manage regulatory application along the entire life cycle of a medicine.

Steps towards the final approval of the IP action plan

December 10, 2021

Artificial Intelligence, biosimilar medicines, blockchain, Bolar exemption, clinical trials, divisional patent applications, EFPIA, EPO’s mandate, European Commission, European IP Information Centre, European Parliament, fragmentation, Free Trade Agreements, FTA, generic medicines, guidelines, innovator industry, intellectual property, intellectual property rights, IP Action Plan, IP coordinator, IP index, IP protection, IP Scan, IP vouchers, IPR, IPR-intensive industry, knowledge-intensive industry, licensing, market entry, marketing authorisation, open technology standards, patent linkage, patent validation, pharmaceutical patents, pharmaceutical spending, R&D intensive industry, recovery and resilience capacity, shortages, SPC, SPC manufacturing waiver, Supplementary Protection Certificates, supply chain, traceability, transparency, Unified Patent Court, Unitary Patent Protection, UPP

By Giuliana Miglierini

The end of 2021 may see the final approval of many pieces of the new legislative framework announced in November 2020 by the European Commission. An important piece of this puzzle is represented by the IP Action Plan, governing the protection of intellectual property (IP); a step forward in this direction is represented by the resolution of 11 November 2021 on the Own-initiative report of the European Parliament.

The final text licensed in single reading is the result of the examination of the initial draft report – issued in May 2020 by the Committee for Legal Affairs, rapporteur Marion Walsmann – by several other Committees (IMCO, DEVE, CULT, AGRI).

The main points of the resolution

The resolution recognises the importance for the European economy of a balanced protection and enforcement of intellectual property rights (IPR). In years 2012-2016, the knowledge-intensive industries generated almost 30% of all jobs and almost 45% of total economic activity (in terms of Gross Domestic Product, GDP) in the EU; the IPR-intensive industries account for 93% of total EU exports of goods.

Europe’s recovery and resilience capacity is also highly impacted, as demonstrated by the pandemic when shortages of certain medicinal products and vaccines occurred. The EU Parliament acknowledges the role played by intellectual property in increasing the overall value of companies,especially the small-and-medium size ones (SMEs).

A current limitation to IP protection in Europe is represented by the still fragmented situation across different member states, which often leads to parallel national validation procedures and litigation for European patents. To this instance, the Parliament suggests the establishment of an IP coordinator at European level, to harmonise the approach to EU IP policy and enhance cooperation between the different bodies involved in the process (i.e. national IP authorities, Commission Directorates-General, EPO, EUIPO, WIPO, etc).

The Parliament also recognised the role IP plays in the pharmaceutical sector, where the availability of incentives greatly favours the development of new and innovative treatments. The resolution asks the Commission to support the innovative potential of European companies “on the basis of a comprehensive IP regime”, so to guarantee effective protection for R&D investments and favour fair returns through licensing. The availability of open technology standards has been valued as an important competitive element on the wider, global scenario.

Many different types of incentives are suggested by the Parliament’s resolution as useful to support micro-enterprises and SMEs in filing and managing their intellectual property, including IP vouchers, IP Scan and other Commission and EUIPO initiatives to support simple registration procedures and low administrative fees. The newly created European IP Information Centre may represents a fundamental reference point to increase knowledge in the field. The Parliament also suggests to introducing an EU-level utility model protection, not yet available, as a possible fast and low-cost protection tool to protect technical inventions.

Unitary patents and improved market competition

Still missing members states are urged to adhere to the enhanced cooperation scheme for the creation of a Unitary Patent Protection (UPP) and to ratify the Protocol to the Agreement on a Unified Patent Court on provisional application (PPA). The activation of this unique Court in charge of the examination of litigations would allow for a more efficient process and for lowering legal costs and improving legal certainty.

Fragmentation remains an issue also with respect to Supplementary Protection Certificates (SPCs): to this instance, the resolution asks the Commission to issue guidelines for member states and to provide a legislative proposal based on an exhaustive impact assessment. A major criticality to be solved is represented by the unitary patent not providing a unique SPC title valid across the EU; the own-initiative report also suggests the extension of the EPO’s mandate, so that examination of SPC applications could be carried out on the basis of unified rules.

Other important points needing attention to improve the presence of generic and biosimilar medicines in the EU are the abuse of divisional patent applications and patent linkage, which should also see an intervention by the Commission. The Parliament also opened the possibility of a revision of the Bolar exemption, which allows clinical trials on patented products needed to reach marketing authorisation of a generic or biosimilar version not to be regarded as infringements of patent rights or SPCs. This may also support the immediate market entry after the expiration of patent rights and SPCs. The Commission is called also to ensure the effectiveness and better coordination of compulsory licensing in order to provide access to medicines needed in case of health emergencies.

The resolution also addresses the theme of standard essential patents, which currently often leads to litigations, and it calls for the revision of the 20-years old system for design protection. Transparency on results obtained from publicly funded R&D is also recommended. The Parliament suggests artificial intelligence (AI) and blockchain technologies may play an important role in tackling counterfeiting practices and guarantee traceability of goods, as they may contribute to a better enforcement of intellectual property rights along the whole supply chain. The Commission should also work to establish clearer criteria for the protection of inventions created by the AI, without human intervention.

Comments from the industry

“The European Parliament has clearly voted for a strong and fair IP system by underlining the importance of timely generic and biosimilar medicine competition. The misuse of divisional patents, the need to enlarge the scope of bolar to include API and all regulatory and administrative steps, and the long overdue ban anti-competitive patent linkage are well known problems that the Commission should address in the IP Action Plan. The Parliament has voted; the Commission must act.”, said Adrian van den Hoven, Director General at Medicines for Europe.

A major point in the implementation of the new European policies is represented by the review the Commission is going to conduct in 2024 to assess the effective achievement of goals of the SPC manufacturing waiver, which entered into force in July 2019 and is expected to start producing effects in the second half of 2022.

Many of the themes discussed in the Parliament’s resolution were debated during a webinar organized by Medicines for Europe, with the participation of representatives from the European Commission and the European Patent Office.

EFPIA, representing the innovator pharmaceutical industry, focused its attention on the impact of past EU Free Trade Agreements (FTAs) on drug spending, timing of countries’ access to new medicines after global launch, investments overall and in pharmaceuticals, and clinical trial participation. A report by IQVIA published in the Federation’s website addresses the impact of IP protection on these elements. Results confirm the central role of the pharmaceutical sector as the most R&D intensive industry in the world, with R&D spending averaging over 15% of revenue. A strong IP protection framework available at the level of EU FTAs favours the attractiveness for investments in the EU and its FTA partner countries. According to the report, an expanded IP protection appears not to be linked to the generation of a higher pharmaceutical spending; drugs’ share of healthcare spending is claimed to stay flat or fall after an FTA, and prices for medicines to rise more slowly than the level of inflation. A stronger IP index, adds IQVIA, is also correlated with increased clinical trial activity in a country, bringing both clinical and economic benefits.

Consultation open on the ICH Q13 guideline on continuous manufacturing

October 8, 2021

batch definition, batch size range, change management, changes in production output, chemical entities, continuous feeding, continuous manufacturing, continuous process verification, control strategy, design of equipment, drug product, drug substance, guideline, ICH Q13, in-line NIR, in-line UV flow cells, in-process controls, input material variability, input materials, mass flow rate, material attributes, material diversion, output materials, particle size analysis, perfusion cell culture bioreactor, pharmaceutical production, process analytical technologies, regulatory expectations, residence time distribution, run time, sampling points, solid dosage form, therapeutic proteins, traceability, unit operations, viral safety and clearance

by Giuliana Miglierini

The new ICH Q13 guideline on the continuous manufacturing of drug substances and drug products aims to harmonise at the international level this rapidly growing sector of pharmaceutical production, providing manufacturers with a flexible approach for the implementation of innovative technologies and ensuring compliance to Current Good Manufacturing Practices (CGMP) specific to continuous manufacturing.

The draft guideline was released in July 2021 and is currently subject to the public consultation phase, which will remain open for comments until 20 December 2021. Comments should be forwarded by e-mail to EMA at the address [email protected]. The process to develop the new guideline started in November 2018 with the publication of the final Concept paper on continuous manufacturing.

The new ICH Q13 guideline is expected to support the adoption of continuous manufacturing systems by the pharmaceutical industry, thus providing innovation of manufacturing methods and availability of more robust and efficient processes, in order to increase options available in case of public health needs and to implement new approaches to Quality Assurance. The new provisions shall also contribute to the reduction of risks for operators, and to resource consumption and waste generation.

The key principles

The guideline on continuous manufacturing builds upon the existing ICH Quality guidelines to specifically address the production of drug substances and drug products for chemical entities and therapeutic proteins, and the conversion of batch manufacturing to continuous manufacturing modalities for existing products. It may also apply to other biological/biotechnological entities. The discussion takes into consideration both scientific and regulatory elements, with respect to the entire lifecycle management of the continuous manufacturing process.

This manufacturing technique is characterised by the continuous feeding of input materials into the productive flow, the transformation of in-process materials within, and the concomitant removal of output materials from the flow. A special attention is paid by the guideline to continuous manufacturing systems in which two or more unit operations are directly connected.

More in particular, Part I of the document addresses general aspects of continuous manufacturing not specific to the technology, dosage form or molecule type under consideration. Many illustrative examples are provided in Part II (Annexes) to support the implementation of the provisions to different operative setups.

Among available modes to run continuous manufacturing, the guideline discusses the combination of traditional approaches inclusive of units operating in a batch mode and integrated continuous manufacturing unit operations, the situation in which all unit operations are integrated and operate in a continuous mode, and the possibility the drug substance and drug product unit operations are integrated across the boundary between drug substance and drug product to form a single continuous manufacturing process.

Part I: How to approach continuous manufacturing

The main part of the guideline is composed of six different sections aimed to provide a general vision of possible issues found in continuous manufacturing, under complementary points of view. The Introduction describes the guiding principles that inspired the document, including scientific and regulatory considerations to be taken in mind for the development of a new continuous manufacturing system.

Section 2 focuses on key concepts, among which is batch definition: according to the guideline, the ICH Q7 definition of a batch is applicable to all modes of continuous manufacturing, for both drug substances and drug products. Different options are available to define the size of a batch produced by continuous manufacturing, i.e., in terms of quantity of output material, quantity of input material, and run time at a defined mass flow rate. Other approaches to batch definition can be also considered upon justification, on the basis of the characteristics of the single process. For example, a batch size range can be established by defining a minimum and maximum run time.

Control strategy, changes in production output and continuous process verification are the key scientific principles addressed in Section 3, being the last item a possible, alternative approach for validating continuous manufacturing processes.

Principles described in ICH Q8-Q11 have always to be taken into consideration while developing the control strategy, using a holistic approach to properly consider aspects specific to continuous manufacturing.

The guideline takes into consideration all items which are part of the control strategy, starting from the state of control, according to ICH Q10, to provide assurance of continued process performance and product quality. Mechanisms should be in place to evaluate the consistency of the operations and to identify parameters outside the historical operating ranges, or signs of drifts/trends indicative the process could be at risk of falling outside the specified operating range. Knowledge of process dynamics is also important to maintain the state of control in continuous manufacturing. To this instance, a useful parameter may be represented by the characterisation of the residence time distribution (RTD). Furthermore, process dynamics should be assessed over the planned operating ranges and anticipated input material variability using scientifically justified approaches.

The guideline provides detailed examples of material attributes that can impact various aspects of continuous manufacturing operation and performance, with specific reference to a solid dosage form process, a chemically synthesised drug substance process, and a therapeutic protein process. Not less important is the design of equipment and the integration to form the continuous manufacturing system. Examples are provided as for the design and configuration of equipment, connections between equipment and locations of material diversion and sampling points.

Process analytical technologies (PAT) developed according to ICH Q8 are suited to implement real-time automated control strategies aimed to promptly detect transient disturbances that may occur during the continuous process. In-line UV flow cells, in-line near-infrared spectroscopy and in-line particle size analysis are possible examples. PAT’s measurements also support traceability of all materials that enter the process and diversion of the potential non-conforming ones.

The different definitions of batches in continuous manufacturing impact also on change management activities. The optimisation of the process may require changes of different parameters; examples discussed by the guideline include changes in run time with no change to mass flow rates and equipment, increase mass flow rates with no change to overall run time and equipment, increase output through duplication of equipment (i.e., scale-out), and scale up by increasing equipment size/capacity.

The above-mentioned critical aspects are also considered in Section 4 as part of the regulatory expectations the development of a continuous manufacturing process should fulfil. A sequential narrative description of the manufacturing process should be included in the Common Technical Document (CTD) and supported by suitable pharmaceutical development data. The description of the continuous manufacturing operational strategy should include operating conditions, in-process controls or tests, criteria that should be met for product collection during routine manufacturing, and the strategy for material collection and, when applicable, diversion. Other information also includes a description of how the material is transported from different pieces of equipment, a flow diagram outlining the direction of material movement through each process step, details about the locations where materials enter and leave the process, the locations of unit operations and surge lines or tanks, and a clear indication of the continuous and batch process steps. Critical points at which process monitoring and controls (e.g., PAT measurement, feedforward, or feedback control), intermediate tests, or final product controls are conducted should be also provided, together with a detailed description of any aspects of equipment design or configuration and system integration identified during development as critical with respect to process control or product quality. Sections 5 and 6 provide, respectively, a Glossary of terms used in continuous manufacturing and a list of useful references.

Part II: Five Annexes to illustrate different fields of continuous manufacturing application

Each of the five Annexes that form Part II of the ICHQ13 guideline addresses issues specific to the application of continuous manufacturing to the target domains typical of the pharmaceutical manufacturing process.

Annex I refers to drug substances for chemical entities. It provides an example of a process containing both continuous and batch operations, where the segment run under continuous conditions consists of a series of unit operations for reactions, liquid phase extraction, carbon filtration, continuous crystallisation, and filtration. A second intermediate synthesised in batch mode enters the continuous flow to participate to the second step in the synthesis of the final drug substance.

Annex II describes a possible implementation of continuous manufacturing for the production of a solid dose drug product.

Here too, a flow diagram exemplifies the different steps of the process, including the blending of different materials followed by direct compression of the tablets and a final step of batch-mode film coating. The guideline also addresses the use of PAT technologies to monitor blend uniformity and trigger tablet diversion. The batch size range is defined on the basis of a predefined mass flow rate.

The manufacturing of therapeutic protein drug substances (e.g., monoclonal antibodies) is discussed in Annex III. This type of process may be used to produce intermediates for the manufacturing of conjugated biological products, and it could be integrated partially or in full of the continuous manufacturing system. The process described in the guideline includes a perfusion cell culture bioreactor with continuous downstream chromatography and other purification steps to continuously capture and purify the target protein. As regard to viral safety and clearance, the guideline specifies that the general recommendations of ICH Q5A remain applicable also for continuous manufacturing; alternative approaches need to be justified.

Many continuous processes integrate in the same flow the manufacturing of both the drug

substance and drug product. This type of circumstance is approached in Annex IV with reference to the production of a small molecule tablet dosage form. The two parts of the overall process may differ under many aspects, e.g., the prevalence for liquid or solid input material addition, different run times, different frequency of in-process measurements. This impacts on the choice of the equipment and the design of locations of in-process measurements and material diversion.

Annex V discusses some possible examples for the management of transient disturbances that may occur during continuous manufacturing, potentially affecting the final quality of the product. Three different approaches are provided, based on the frequent/infrequent occurrence of the disturbance and on its amplitude and duration with respect to predefined acceptance criteria.

traceability Archives - European Industrial Pharmacists Group (EIPG)

The European Medicines Regulatory Network Data Standardisation Strategy

Steps towards the final approval of the IP action plan

Consultation open on the ICH Q13 guideline on continuous manufacturing

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