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EFSA Proposes New Qualification System for Nanomaterials Risk Assessment Using New Approach Methodologies (NAMs)

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25
September 2024
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Dr Steven Brennan
EFSA introduces a new qualification system for New Approach Methodologies (NAMs) in nanomaterial risk assessment.
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The European Food Safety Authority (EFSA) has proposed a new qualification system for New Approach Methodologies (NAMs) in the food and feed sector, specifically targeting nanomaterial (NM) risk assessment. This system aims to streamline the regulatory use of NAMs, making the evaluation of nanomaterials more efficient and standardized. The proposal addresses current challenges in NM risk assessment, including the lack of harmonization and the complexity of case-by-case evaluations. By establishing clear criteria for method readiness, the system seeks to facilitate the international use of test methods and enhance the optimization of NAMs for regulatory applications.

How does EFSA's proposed qualification system address the current challenges in nanomaterial risk assessment?

EFSA's proposed qualification system addresses current challenges in nanomaterial risk assessment by establishing a structured approach for evaluating the readiness of NAMs. It introduces a sequential process that includes a Letter of Intent (LoI) to evaluate the suitability of a NAM for a specific context. This system aims to reduce the complexity of case-by-case evaluations and facilitate the international use of test methods by providing clear criteria for assessing scientific validity, reliability, and relevance.

What role will the proposed qualification system play in enhancing the use of NAMs for nanomaterial risk assessment?

The proposed qualification system will play a crucial role in enhancing the use of NAMs for nanomaterial risk assessment by offering a clear and efficient pathway for their evaluation and regulatory acceptance. By establishing standardized criteria and a sequential framework, the system will support the development and optimization of NAMs, reducing the need for repetitive evaluations and facilitating their international use. This will help ensure that NAMs are effectively integrated into the risk assessment process, improving the safety evaluation of nanomaterials in the food and feed sector.

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The European Food Safety Authority (EFSA) has introduced a new proposal for a qualification system for New Approach Methodologies (NAMs) in the food and feed sector, focusing on nanomaterial (NM) risk assessment. The initiative aims to streamline the regulatory use of NAMs and enhance their integration into the risk assessment process, providing a more efficient and standardized approach for evaluating nanomaterials.

Background and Purpose

NAMs have gained traction in risk assessments for their ability to provide faster, more informative insights than traditional animal tests. Despite their potential, only a few NAMs have been validated and incorporated into regulatory frameworks like OECD Test Guidelines (TGs). EFSA's proposal seeks to establish a qualification system that allows for a structured and efficient evaluation of NAMs, specifically targeting the food and feed sector's need for assessing nanomaterials​.

The Need for a Qualification System

Currently, non-guideline studies are used for NM risk assessments, necessitating complex case-by-case evaluations. This new qualification system aims to simplify this process by enabling expert opinions on the adequacy of NAMs for specific contexts. The system is designed to provide guidance for method readiness, ensuring the scientific validity, reliability, and relevance of NAMs for regulatory applications​.

Proposed Framework

The proposed system involves a sequential process starting with a Letter of Intent (LoI) to evaluate the suitability of a NAM for a specific context-of-use. The system covers all phases, including submission, evaluation, and outcome, providing clear criteria for assessment. This interim proposal focuses initially on NM risk assessment, aligning with the EFSA framework to address specific considerations such as NM physicochemical characterization, toxicity screening, and other relevant evaluations​.

Implementation and Testing

The proposal suggests that the system be initially tested with selected NAMs in the context of NM risk assessment case studies. This testing phase aims to fine-tune and finalize the approach through broader discussions among experts and stakeholders. The document is open for feedback until 31 December 2024, encouraging a collaborative effort to enhance the regulatory use of NAMs​.

Current Challenges with NAMs

The limited regulatory implementation of NAMs is attributed to unclear regulatory applications, incomplete data interpretation procedures, and lack of quality systems. Additionally, for nanomaterials, challenges such as dispersion stability and dosimetry make validation more complex. The proposed qualification system aims to address these challenges by providing a structured approach for assessing method readiness​.

Advantages of the Qualification System

By establishing this system, EFSA aims to facilitate the international use of test methods under the Mutual Acceptance of Data (MAD) principle. The qualification system is intended to support the optimization of NAMs, allowing them to be applied for qualified use without the need for repetitive evaluations. This approach could lead to a more harmonized risk assessment process for nanomaterials in the food and feed sector​.

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