FDA Issues Precision Medicine Draft Guidances

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FDA says it is supporting President Obama’s Precision Medicine Initiative through release of two draft guidances that, when finalized, will provide a flexible and streamlined approach to the oversight of tests that detect medically important differences in a person’s genomic makeup. An agency statement (contains links to both draft guidances) says that the new technology, known as next-generation sequencing (NGS), can scan a person’s DNA to detect genomic variations that may determine whether the person has or is at risk of disease or may help to inform treatment decisions.

“While current regulatory approaches are appropriate for conventional diagnostics that measure a limited number of substances associated with a disease or condition, such as blood glucose or cholesterol levels,” the statement says, “the new sequencing technologies can examine millions of DNA variants at a time, and thus require a flexible approach to oversight that is adapted to the novel nature of these tests.”

The agency says it understands that the field of genetic and genomic testing is dynamic and there is a need to encourage innovation while assuring that the tests provide accurate and useful results. When the guidances are finalized, it says, adherence to them will offer appropriate flexible and adaptive regulatory oversight of these tests, while allowing for variations in development and validation and accommodating the rapid evolution of NGS technologies.

One guidance, Use of Standards in FDA’s Regulatory Oversight of Next Generation Sequencing Based on in Vitro Diagnostics Used for Diagnosing Germline Diseases, makes recommendations for designing, developing, and validating NGS-based tests for rare hereditary diseases, and addresses the potential for using FDA-recognized standards to demonstrate analytical validity.

The second draft, Use of Public Human Genetic Variant Databases to Support Clinical Validity for New Generation Sequencing-Based in Vitro Diagnostics, describes an approach in which test developers may rely on clinical evidence from FDA-recognized public genome databases to support clinical claims for their tests and provide assurance of accurate clinical interpretation of genomic test results, making what FDA says is an easier path for marketing clearance or approval.

There is a 90-day public comment period for each of the drafts.

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