Somatic Reference Samples Initiative


Project Goal: Develop reference samples that can be made available to the public to improve the accuracy, reliability and transparency of NGS-based oncology tests.


Project Impact:

  • Aid in efficient NGS test development and validation
  • Streamline and possibly obviate steps in the regulatory process for diagnostic companies
  • Provide transparency
  • Compress development timelines for targeted therapeutics developers

The Somatic Reference Samples (SRS) Initiative seeks to address the need for well characterized somatic reference samples and data sets for use in validating next generation sequencing (NGS) based diagnostics. A pilot project has been fully funded by industry and philanthropic organizations to develop an initial set of 10 reference samples each with a selected cancer variant engineered into the Genome in a Bottle human cell line HG002 using CRISPR gene editing. MDIC is working in close collaboration with the National Institute of Standards and Technology to identify low frequency variants in the HG002 human cell line and generate a mosaic variant benchmark. MDIC’s bioinformatics team is employing a trio-based approach for this pilot work using next generation sequencing (NGS) datasets from 3 GIAB cell lines from an Ashkenazi Jewish family (HG002-son, HG003-father, and HG004-mother). A ‘normal’ sample was simulated by combining Illumina sequencing data for the parents (HG003 and HG004). This normal sample was run alongside the son’s sequencing data (HG002), which was designated as the tumor sample on strelka2, an open source variant caller, and yielded variants found within the son (HG002). Around 1,000 of the identified HG002 variants were further validated with multiple NGS platforms (short and long read): Illumina Duplex, BGI, Element, and PacBio HiFi. We are also conducting a curation phase to identify variants that should remain in our mosaic variant benchmark and those that should be removed. Once internal evaluation and curation are complete, external collaborators will test and scrutinize our variant set to address any discrepancies or errors. The final variants will help inform the assessment of the engineered SRS samples, designed with HG002 as a genomic background, and will be the content of a mosaic variant benchmark to be published later this year. This work is highlighted in the poster (above) presented by Adetola Abdulkadhir at the AGBT conference in Fort Lauderdale, FL , Feb 2023.  MDIC_AGBT Poster_FINAL

ARLINGTON, Va.–(BUSINESS WIRE)–The Medical Device Innovation Consortium (MDIC) has partnered with PerkinElmer’s Horizon Discovery to develop and manufacture somatic reference samples (SRSs) to simplify and support validation of next generation sequencing (NGS)-based cancer diagnostics. The SRSs are expected to be commercially available by early 2024, following a rigorous characterization and validation process in collaboration with the National Institute for Standards and Technology (NIST).

This partnership is part of MDIC’s Somatic Reference Samples (SRS) Initiative, a collaborative effort to improve the accuracy of next generation sequencing-based cancer diagnostics, and create publicly available reference samples and a global genomic data resource library. These tools could be used for diagnostic development, regulatory submissions, reimbursement decisions, and other applications across the total product life cycle of NGS-based diagnostics.

“We look forward to combining Horizon Discovery’s technical capabilities in reference sample development and manufacturing with MDIC’s expertise creating and disseminating new methods and tools to advance safe and effective medical technologies. The Somatic Reference Samples Initiative will benefit patients by bringing more consistency to NGS-based cancer diagnostics development and ultimately support improved diagnoses and more effective treatments,” said Andrew Fish, MDIC President and CEO.

“Oncology reference standards are essential to unlocking tomorrow’s discoveries,” Alan Fletcher, Senior Vice President, Life Sciences, at PerkinElmer commented. “Horizon Discovery’s reference standards have been critical enablers in research for a variety of diseases, and now we look forward to partnering with MDIC to bring standards to the oncology community.”

Horizon Discovery will use clustered regularly interspaced short palindromic repeats (CRISPR) technology to engineer and manufacture ten SRSs, each with a different variant or change in the DNA sequence of a gene that has been clinically associated with a certain type of cancer. Leveraging its rich heritage in CRISPR editing technologies, Horizon Discovery has used this process to develop cell-based reference material for over a decade. Upon project completion,MDIC will collect and disseminate best practices to improve the efficiency and sustainability of reference sample manufacture, validation, and dataset generation in general.

The manufacturing process is expected to be completed by 2023 followed by extensive characterization, data validation, and integration. The fully characterized SRSs are expected to be commercially available through Horizon by early 2024, and the characterization data is planned to be accessible through public databases.

MDIC’s SRS Initiative, which includes the FDA, NIST, NIH, CDC, and the pharmaceutical and diagnostics industries as collaborators, began in 2018 with an analysis of the landscape to identify gaps in available SRSs. MDIC’s SRS Landscape Analysis, published in 2019, was an extensive catalog of cancer variants and existing reference materials. The SRS Initiative team has prioritized ten variants from that list to manufacture in this new phase of the initiative. These ten selected variants represent a range of cancers and types of DNA mutations and vary in the degree of technical difficulty required for manufacture for the pilot project to have broad applicability. The work in the SRS Initiative is funded in part by the Gordon and Betty Moore Foundation (Grant GBMF), the National Philanthropic Trust, Illumina, and Quidel. FDA is a member of the MDIC’s SRS Initiative, but did not participate in discussions involving funding, contracts, or solicitations.

About MDIC

Founded in 2012, the Medical Device Innovation Consortium (MDIC) is the first public-private partnership created with the sole objective of advancing medical device regulatory science throughout the total product life cycle. MDIC’s mission is to transform health care into human care. Collaborating with our partners to advance science, we enable transformational medical technology to shape the world we want to live in and make that world possible by shortening the path from innovation to safety to access. For more information, visit mdic.org.

Initiative to develop, manufacture, and validate publicly available somatic reference samples and create public genomic datasets with the potential to be used by sponsors and regulators

ARLINGTON, Va.–(BUSINESS WIRE)–The Medical Device Innovation Consortium (MDIC) formally launched its Somatic Reference Samples (SRS) Initiative with a pilot project to improve the validation and regulatory review process for cancer diagnostics based on next generation sequencing (NGS).

MDIC will lead a collaboration with the U.S. Food and Drug Administration (FDA), the National Institute of Standards and Technology (NIST), National Institutes of Health (NIH) and industry stakeholders to manufacture, validate, and distribute SRSs to simplify and support validation of NGS-based cancer diagnostics. The initiative also includes the goal to create a publicly available global genomic data resource library of datasets with the potential to be used by sponsors and regulators.

“NGS is a powerful technology enabling breakthroughs in diagnostics and ultimately therapeutics. These diagnostic tests need to be validated for accurate clinical use, and reference samples are essential to the validation process. But well-characterized and widely accepted reference materials do not exist for NGS-based diagnostics, complicating the development and validation process,” said Andrew Fish, President and CEO, MDIC. “Through the MDIC SRS Initiative, we are developing reference samples and data sets that can be used globally by test developers and regulators to bring more consistency to NGS-based cancer diagnostic development, increasing the confidence and accuracy of these tests, which will ultimately lead to more accuracy in diagnosis and treatment for patients.”

“There is a need for appropriately consented, highly characterized, and broadly available reference materials that may improve the accuracy, reliability, and transparency of NGS-based oncology tests and support the generation of validation data for use in regulatory submissions. The reference samples and datasets being created by the MDIC Somatic Reference Samples Initiative can help fulfill this need,” said Wendy Rubinstein, MD, PhD, Director, Personalized Medicine, Center for Devices and Radiological Health, U.S. Food and Drug Administration.

Horizon Discovery, a PerkinElmer company, is conducting the development and manufacture of these reference samples. The goal of this pilot project is to individually engineer 10 gene variants clinically associated with cancer into a highly characterized human cell line – GM24385 (PGP/GIAB) – using Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) technology resulting in ten edited human cell lines, each containing one gene variant clinically associated with one or more specific cancers. The cell lines, containing confirmed sequences, will be combined and available in FFPE format. The fully characterized reference samples will be commercially available to the end users from Horizon and the characterization data will be accessible through public databases, including precisionFDA, an FDA-sponsored site for data information, sequencing, and bioinformatics.

NIST’s involvement in this work is to foster understanding.* “As our collaboration validates the MDIC SRS samples, we will also learn and build best practices to improve the efficiency and sustainability of reference sample validation and dataset generation in general. This project is a major step in the development and optimization of new sequencing technologies and the translation of DNA sequencing to clinical applications for diagnosing and treating cancer,” said Justin Zook, PhD, Co-Leader, Biomarker and Genomic Sciences Group, National Institute of Standards and Technology.

MDIC’s SRS project began as a working group in 2018, representing more than forty stakeholders with a mission to address the gap in reference material for NGS-based diagnostic tests. The initial output of this working group, MDIC’s SRS Landscape Analysis, published in 2019, was a comprehensive catalog of existing clinically relevant cancer variants and available reference samples. Based on the unmet needs discovered through the SRS Landscape Analysis, the SRS Initiative has prioritized a subset of ten variants to be engineered into reference samples for the pilot project. In addition to the utility of these samples in development, validation, and regulatory review, these samples potentially have value in reimbursement decisions, post-market monitoring and informing the path forward for addition SRS.

The work in the SRS Initiative is funded in part by the Gordon and Betty Moore Foundation (Grant GBMF), the National Philanthropic Trust, Illumina, and Quidel.

* Affiliation with a commercial product does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.

About MDIC

Founded in 2012, the Medical Device Innovation Consortium (MDIC) is the first public-private partnership created with the sole objective of advancing medical device regulatory science throughout the total product life cycle. MDIC’s mission is to transform health care into human care. Collaborating with our partners to advance science, we enable transformational medical technology to shape the world we want to live in and make that world possible by shortening the path from innovation to safety to access. For more information, visit mdic.org.

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 A subgroup of the MDIC SRS Working Group was established to identify variants or other targets (e.g., genomic signatures) that would be included in an ideal set of somatic reference samples for clinically actionable oncogene variants in solid tumors. Download the list of priority variants here