Euan Ashley | |
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Alma mater |
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Known for | Genomics, Precision medicine, MyHeart Counts |
Awards | Fellow of the Royal College of Physicians, National Innovation Award, American Heart Association NIH Director's New Innovator Award, AHA Council on Genomic and Precision Medicine Medal of Honor, Guggenheim Fellowship Award |
Scientific career | |
Institutions | |
Thesis | Nitric oxide and cardiac function (2002) |
Doctoral advisor | Barbara Casadei |
Other academic advisors | Hugh Watkins |
Website | ashleylab |
Euan Angus Ashley is a Scottish physician, scientist, author, and founder based at Stanford University in California where he is the Arthur L. Bloomfield Chair of the Department of Medicine. [1] He is known for helping establish the field of precision medicine.
Ashley was born and raised in the West of Scotland and attended Kelvinside Academy in Glasgow. As a teenager, he programmed computers and read popular science books on genetics. He studied Physiology and Medicine at the University of Glasgow graduating with 1st class Honors. He completed residency training at the Oxford Deanery [2] and received his Doctorate (DPhil) from the University of Oxford (Christ Church College). At Stanford University in California, he completed post-doctoral research and specialized training in cardiology, joining the faculty in 2006. He was appointed Associate Dean in 2020.
Ashley is the Chair of the Department of Medicine at Stanford. [3] It is the University’s largest department with 15 divisions, over 800 faculty, 500 trainees, and 1200 academic and administrative staff.
Ashley founded the Center for Inherited Cardiovascular Disease in 2009. [4] [5] It grew out of a clinic established with Heidi Salisbury RN [6] in 2006. The Center is one of the largest in the world providing integrated care for patients with inherited cardiovascular diseases like cardiomyopathy, channelopathy, familial lipoprotein syndromes, aortopathies and neuromuscular disease. An annual fundraising run includes patients, faculty, staff and silicon valley celebrities like Mark Zuckerberg. [7] In 2023, Victoria Parikh [8] took over as director.
Ashley is best known for his study of the human genome. [9] [10] [11] [12] In 2009, he led the team that carried out the first medical interpretation of a human genome. [9] The work published in The Lancet laid out a general framework for the medical analysis of a complete human genome and applied this framework to the genome of his Stanford colleague, Stephen Quake. Quake had invented a technology to sequence his own genome, becoming the fifth individual in the world to be sequenced. The landmark medical analysis was reported in news media internationally and was later featured in the Smithsonian museum.
In 2010, Ashley's team carried out the first whole-genome molecular autopsy [13] generating data from the same Helicos sequencing technology of post-mortem cardiac tissue from a patient who died suddenly at a young age of presumed cardiac cause.
In 2011, his team developed a framework for family-based medical genome analysis. [14] The West family were the first family to have their genomes sequenced and were four of the ten individuals sequenced as part of Illumina’s personal genome sequencing project. Other individuals in this first group of ten included Illumina CEO Jay Flatley and the actress Glenn Close. The computational tools developed by Ashley's team included inheritance tools for mendelian diagnosis in trios and quartets, family based polygenic risk scores, whole genome phasing, HLA typing, and automated star-allele calling for pharmacogenomics.
Over the following years, Ashley's team helped establish genome sequencing as a fundamental tool for diagnosis in clinical medicine. In 2014, they reported in the Journal of the American Medical Association a study of genome sequencing in primary care, demonstrating early detection of pathogenic variations in the breast and ovarian cancer gene BRCA2 , and delivering tools for cardiometabolic polygenic risk scoring, and pharmacogenomics. This work also introduced quality-coverage metrics. Ashley was interviewed for NPR's Morning Edition .
In 2017, Ashley's team made the first medical diagnosis using long-read sequencing in a patient with Carney complex whose targeted Sanger sequencing and short read whole genome sequencing had been unrevealing. Developing a pipeline for clinical diagnosis based on aligning, variant calling and filtering Pacific Biosciences SMRT sequencing data, the team identified a previously unrecognized 2 kilobase deletion in PRKAR1A, the gene responsible for Carney complex.
In 2018, as the first co-chair of the steering committee of the Undiagnosed Diseases Network (UDN) [15] [16] Ashley led the network's analysis published in the New England Journal of Medicine that reported an overall diagnosis rate of 35%, estimated significant cost savings from early application, and defined 31 new medical syndromes. This was reported widely including on CBS This Morning , NPR's Morning Edition, and the New York Times where it featured in a segment titled This Week in Good News.
In 2022 Ashley and his research team developed ultra-rapid nanopore genome sequencing for critically ill patients. [17] Published in the New England Journal of Medicine and Nature Biotechnology, the team showed that a genetic diagnosis from whole genome sequencing was possible in as little as 7 hours and 18 minutes. [18] [19] This achievement was recognized by the National Institute for Standards and Technology as well as by Guinness World Records who awarded the team a new record for “fastest DNA sequencing technique.” [20] Ashley appeared on NBC Evening News to discuss the findings.
Ashley's group has also contributed to the foundational science underlying the development of heart transplant donation after cardiac death (DCD) much of that work performed in the same building at Stanford in which heart transplantation was first developed by Norman Shumway.
Ashley is a recipient of the National Innovation Award from the American Heart Association (AHA) as well as the National Institutes of Health (NIH) Director's New Innovator Award. In 2017, he was recognized by the Obama White House for contributions to personalized and precision medicine. In 2019, he was awarded the American Heart Association Medal of Honor for Genomics and Precision Medicine. In 2021, he became the first holder of the Roger and Joelle Burnell Chair in Genomics and Precision Health at Stanford University. In April 2023, he was awarded the Guggenheim Fellowship, [21] [22] a prestigious honor recognizing mid-career scholars, artists, and scientists who have demonstrated a previous capacity for outstanding work and continue to show exceptional promise.
Ashley has co-authored over 400 peer reviewed publications. [23]
In 2004, Ashley published the textbook Cardiology Explained [24] along with co-author Josef Niebauer (Remedica, London). According to the publisher's notes, the title “...explains the basic physiology and pathophysiologic mechanisms of cardiovascular disease in a straightforward and diagrammatic manner, gives guidelines as to when referral is appropriate, and, uniquely, explains what the specialist is likely to do.”
Ashley released the non-fiction title The Genome Odyssey: Medical Mysteries and the Incredible Quest to Solve Them [25] [26] on February 23, 2021, with Celadon Books, a division of Macmillan Publishers. The book features stories of patients and families from Ashley's medical practice and walks through the science underlying those diseases, shining a spotlight on some of the scientists. New York Times best-selling author Abraham Verghese remarked that The Genome Odyssey was “destined to be a landmark narrative in the canon of modern science.” The Pulitzer prize winning author Siddartha Muhkerjee wrote that “Dr Ashley, one of the pioneers of gene sequencing technologies, writes with authority, elegance and simplicity.” The Wall Street Journal described The Genome Odyssey as an “impassioned, firsthand account of the effort to bring genomic data into clinical practice.”
Ashley has appeared on National Public Radio in the United States as well as the BBC radio, Japanese and Indian national television, and NBC Evening News. His work has been covered in print by The New York Times , The Wall Street Journal , The Guardian , The Times of London , The Economist , The Daily Telegraph , Technology Review , and others. His work with the Undiagnosed Diseases Network was covered by National Public Radio [27] and The New York Times . [28]
Ashley is co-founder of multiple companies.
In 2012, Ashley co-founded Personalis, [29] a genome-scale diagnostics company with Stanford colleagues Russ Altman, Atul Butte, Mike Snyder and businessman John West. West was the former CEO of Solexa and managed the sale of its core business to Illumina, Inc. In a 2021 earnings call, CEO John West stated that Personalis has sequenced more genomes than any other private company in the US. The company focuses on cancer diagnostics.
Ashley co-founded Deepcell [30] along with Maddison Masaeli (a former post doc in his lab) and Mahyar Salek (a computer scientist). Deepcell develops imaging and microfluidics platforms that use artificial intelligence to identify and isolate viable cells based on morphological distinctions.
Ashley is co-founder and chairman of the board at Silicon Valley Exercise Analytics (Svexa), [31] a sports intelligence company that combines physical, subjective and biological data to offer optimized training, performance and recovery recommendations for athletes and teams. He co-founded Svexa with Mikael Mattson, a Swedish physiologist who completed part of his PhD in Ashley's lab, Daryl Waggott who worked as a computational biologist in Ashley's lab, and Filip Larsen, a longtime collaborator of Mattson.
Ashley was appointed as a Non-Executive Director of the pharmaceutical company AstraZeneca in October 2020. [32] In July 2021, the company acquired Boston-based rare disease company Alexion in a $40 billion deal. During the pandemic, the company licensed a COVID vaccine from the University of Oxford and distributed more than 3 billion doses of the vaccine globally mostly to low- and moderate-income countries. According to company statements, close to 2 billion doses were distributed at cost.
Ashley is Chairman of the Board of the sports intelligence company Svexa.
Ashley learned jazz saxophone as a teenager and joined Scotland's regional youth jazz orchestra including tours to the Montreux Jazz Festival, Poland and the USA. Forming a jazz saxophone quartet with members of its saxophone section, The Hung Drawn Quartet featured Ashley, Raymond MacDonald, Graeme Wilson and Allon Beauvoisin and performed a mix of original compositions and arrangements of jazz standards. They released two albums (Cookin' with the HDQ and A Train in the Distance) appeared multiple times on BBC Radio and contributed an arrangement of Charlie Mingus’ Haitian Fight Song to the David Byrne-produced soundtrack for the movie Young Adam featuring Ewan McGregor, Tilda Swinton, and Emily Mortimer. They toured in the US (Philadelphia, New York) and Ontario, Canada in 1994. Ashley also performed in duo and quartet format at the Glasgow International Jazz Festival with Malcolm Finlay, Stuart Brown and others as part of the group Universal.
While at Oxford University, Ashley directed the Oxford University Jazz Orchestra a period of tenure that included band tours to the Glasgow International Jazz Festival, honors at the BBC big band competition, and the release of the live album Know Where you Are with bebop legend Peter King.
During this time, Ashley also acted as soloist for a performance of the Glazounov Saxophone Concerto by the Radcliffe Orchestra in Oxford. [33]
In California, Ashley has performed with jazz group The Jazz Factory and with an Oakland-based Afro-Peruvian jazz collective.
Ashley lives in Stanford, California with his wife, Fiona, and their three children. According to his Stanford biography, he is also a private pilot.
Coronary artery disease (CAD), also called coronary heart disease (CHD), or ischemic heart disease (IHD), is a type of heart disease involving the reduction of blood flow to the cardiac muscle due to a build-up of atheromatous plaque in the arteries of the heart. It is the most common of the cardiovascular diseases. CAD can cause stable angina, unstable angina, myocardial ischemia, and myocardial infarction.
The human genome is a complete set of nucleic acid sequences for humans, encoded as the DNA within each of the 24 distinct chromosomes in the cell nucleus. A small DNA molecule is found within individual mitochondria. These are usually treated separately as the nuclear genome and the mitochondrial genome. Human genomes include both protein-coding DNA sequences and various types of DNA that does not encode proteins. The latter is a diverse category that includes DNA coding for non-translated RNA, such as that for ribosomal RNA, transfer RNA, ribozymes, small nuclear RNAs, and several types of regulatory RNAs. It also includes promoters and their associated gene-regulatory elements, DNA playing structural and replicatory roles, such as scaffolding regions, telomeres, centromeres, and origins of replication, plus large numbers of transposable elements, inserted viral DNA, non-functional pseudogenes and simple, highly repetitive sequences. Introns make up a large percentage of non-coding DNA. Some of this non-coding DNA is non-functional junk DNA, such as pseudogenes, but there is no firm consensus on the total amount of junk DNA.
Genomics is an interdisciplinary field of molecular biology focusing on the structure, function, evolution, mapping, and editing of genomes. A genome is an organism's complete set of DNA, including all of its genes as well as its hierarchical, three-dimensional structural configuration. In contrast to genetics, which refers to the study of individual genes and their roles in inheritance, genomics aims at the collective characterization and quantification of all of an organism's genes, their interrelations and influence on the organism. Genes may direct the production of proteins with the assistance of enzymes and messenger molecules. In turn, proteins make up body structures such as organs and tissues as well as control chemical reactions and carry signals between cells. Genomics also involves the sequencing and analysis of genomes through uses of high throughput DNA sequencing and bioinformatics to assemble and analyze the function and structure of entire genomes. Advances in genomics have triggered a revolution in discovery-based research and systems biology to facilitate understanding of even the most complex biological systems such as the brain.
Personalized medicine, also referred to as precision medicine, is a medical model that separates people into different groups—with medical decisions, practices, interventions and/or products being tailored to the individual patient based on their predicted response or risk of disease. The terms personalized medicine, precision medicine, stratified medicine and P4 medicine are used interchangeably to describe this concept, though some authors and organizations differentiate between these expressions based on particular nuances. P4 is short for "predictive, preventive, personalized and participatory".
Personal genomics or consumer genetics is the branch of genomics concerned with the sequencing, analysis and interpretation of the genome of an individual. The genotyping stage employs different techniques, including single-nucleotide polymorphism (SNP) analysis chips, or partial or full genome sequencing. Once the genotypes are known, the individual's variations can be compared with the published literature to determine likelihood of trait expression, ancestry inference and disease risk.
Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer. A medical professional who practices oncology is an oncologist. The name's etymological origin is the Greek word ὄγκος (ónkos), meaning "tumor", "volume" or "mass". Oncology is concerned with:
Whole genome sequencing (WGS) is the process of determining the entirety, or nearly the entirety, of the DNA sequence of an organism's genome at a single time. This entails sequencing all of an organism's chromosomal DNA as well as DNA contained in the mitochondria and, for plants, in the chloroplast.
The exome is composed of all of the exons within the genome, the sequences which, when transcribed, remain within the mature RNA after introns are removed by RNA splicing. This includes untranslated regions of messenger RNA (mRNA), and coding regions. Exome sequencing has proven to be an efficient method of determining the genetic basis of more than two dozen Mendelian or single gene disorders.
Exome sequencing, also known as whole exome sequencing (WES), is a genomic technique for sequencing all of the protein-coding regions of genes in a genome. It consists of two steps: the first step is to select only the subset of DNA that encodes proteins. These regions are known as exons—humans have about 180,000 exons, constituting about 1% of the human genome, or approximately 30 million base pairs. The second step is to sequence the exonic DNA using any high-throughput DNA sequencing technology.
The $1,000 genome refers to an era of predictive and personalized medicine during which the cost of fully sequencing an individual's genome (WGS) is roughly one thousand USD. It is also the title of a book by British science writer and founding editor of Nature Genetics, Kevin Davies. By late 2015, the cost to generate a high-quality "draft" whole human genome sequence was just below $1,500.
Atul Janardhan Butte or Atul J. Butte is an American biomedical informatician, pediatrician, and biotechnology entrepreneur. He is currently the Priscilla Chan and Mark Zuckerberg Distinguished Professor at the University of California, San Francisco. Since April 2015, Butte has serves as inaugural director of UCSF's Bakar Computational Health Sciences Institute.
Molecular diagnostics is a collection of techniques used to analyze biological markers in the genome and proteome, and how their cells express their genes as proteins, applying molecular biology to medical testing. In medicine the technique is used to diagnose and monitor disease, detect risk, and decide which therapies will work best for individual patients, and in agricultural biosecurity similarly to monitor crop- and livestock disease, estimate risk, and decide what quarantine measures must be taken.
Genomics England is a company set up and owned by the United Kingdom Department of Health and Social Care to run the 100,000 Genomes Project. The project aimed in 2014 to sequence 100,000 genomes from NHS patients with a rare disease and their families, and patients with cancer. An infectious disease strand is being led by Public Health England.
The 100,000 Genomes Project is a now-completed UK Government project managed by Genomics England that is sequencing whole genomes from National Health Service patients. The project is focusing on rare diseases, some common types of cancer, and infectious diseases. Participants give consent for their genome data to be linked to information about their medical condition and health records. The medical and genomic data is shared with researchers to improve knowledge of the causes, treatment, and care of diseases. The project has received over £300 million from public and private investment.
The Undiagnosed Diseases Network (UDN) is a research study that is funded by the National Institutes of Health Common Fund. Its purpose is to bring together clinical and research experts from across the United States to solve the most challenging medical mysteries using advanced technologies.
Clinicogenomics, also referred to as clinical genomics, is the study of clinical outcomes with genomic data. Genomic factors have a causal effect on clinical data. Clinicogenomics uses the entire genome of a patient in order to diagnose diseases or adjust medications exclusively for that patient. Whole genome testing can detect more mutations and structural anomalies than targeted gene testing. Furthermore, targeted gene testing can only test for the diseases for which the doctor screens, whereas testing the whole genome screens for all diseases with known markers at once.
Elective genetic and genomic testing are DNA tests performed for an individual who does not have an indication for testing. An elective genetic test analyzes selected sites in the human genome while an elective genomic test analyzes the entire human genome. Some elective genetic and genomic tests require a physician to order the test to ensure that individuals understand the risks and benefits of testing as well as the results. Other DNA-based tests, such as a genealogical DNA test do not require a physician's order. Elective testing is generally not paid for by health insurance companies. With the advent of personalized medicine, also called precision medicine, an increasing number of individuals are undertaking elective genetic and genomic testing.
Clinical metagenomic next-generation sequencing (mNGS) is the comprehensive analysis of microbial and host genetic material in clinical samples from patients by next-generation sequencing. It uses the techniques of metagenomics to identify and characterize the genome of bacteria, fungi, parasites, and viruses without the need for a prior knowledge of a specific pathogen directly from clinical specimens. The capacity to detect all the potential pathogens in a sample makes metagenomic next generation sequencing a potent tool in the diagnosis of infectious disease especially when other more directed assays, such as PCR, fail. Its limitations include clinical utility, laboratory validity, sense and sensitivity, cost and regulatory considerations.
Personalized genomics is the human genetics-derived study of analyzing and interpreting individualized genetic information by genome sequencing to identify genetic variations compared to the library of known sequences. International genetics communities have spared no effort from the past and have gradually cooperated to prosecute research projects to determine DNA sequences of the human genome using DNA sequencing techniques. The methods that are the most commonly used are whole exome sequencing and whole genome sequencing. Both approaches are used to identify genetic variations. Genome sequencing became more cost-effective over time, and made it applicable in the medical field, allowing scientists to understand which genes are attributed to specific diseases.
Precision diagnostics is a branch of precision medicine that involves managing a patient's healthcare model and diagnosing specific diseases based on omics data analytics.