After a public consultation last July, the EMA published its Reflection Paper on Good Manufacturing Practice (GMP) and Marketing Authorisation Holders (MAH) on 23 July 2021. The Paper aims to clarify the responsibilities of the MAH in the GMP guidelines and the applicable legislation. While it is not legally binding, the EMA expects competent authorities to use the Paper as guidance when performing inspections, and so MAHs should familiarise themselves with the document. In this blog we have summarised the key takeaways.
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On 13 December 2019, the European Medicines Agency (“EMA”) published a Questions and Answers document (“Q&A”) providing guidance on the conduct of comparability exercise for advanced therapy medicinal products (“ATMPs”). The Q&A addresses various regulatory questions that arise in situations in which companies developing or marketing ATMPs introduce changes to the manufacturing process and need to generate related comparability data.

Background

EMA’s experience suggests that changes to the manufacturing of ATMPs are “frequent” and even more so in the development of the medicinal product. These changes need, however, to be introduced in accordance with the Good Manufacturing Practices (“GMP”). Moreover, the changes may require a variation of the marketing authorisation for authorised ATMPs or substantial amendments to the clinical trial protocol for ATMPs used in clinical trials.

In addition, the changes to the manufacturing of the ATMP must be supported by the data generated in a comparability exercise. This exercise should focus on the characteristics of the ATMP prior and after the introduction of the manufacturing change. This is valid for both investigational ATMPs and authorised ATMPs.

The position of the EMA is that changes to the manufacturing of the ATMP should not undermine or impact adversely the quality, efficacy or safety of the medicinal product or the related risk-benefit balance. The objective of the comparability exercise is to facilitate the assessment and demonstration of this.


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On 22 November 2017, the European Commission adopted new guidelines on Good Manufacturing Practice (GMP) specific to Advanced Therapy Medicinal Products (ATMPs). ATMP manufacturers must ensure compliance with these guidelines no later than 22 May 2018.

The guidelines seek to reflect the rapid technological and medical advancements being made in the field of ATMPs (i.e. gene therapies, somatic cell therapies and tissue engineered products), such as decentralised manufacturing for autologous products, automated production, outsourced reconstitution, and gene editing technologies such as CRISPR and immunomodulators. Currently, these new technologies must comply with the general GMP guidelines set out in Volume 4 of The rules governing medicinal products in the European Union. However, these products are often developed in an academic or hospital setting under quality systems different to those typically required for the manufacture of conventional medicinal products.


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