Structural variants account for most of the base pairs that differ between human genomes, and are known to cause more than 1,000 genetic disorders, including ALS, schizophrenia, and hereditary cancer. Yet they remain overlooked in human genetic research studies due to inherent challenges of short-read sequencing methods to resolve complex variants, which often involve repetitive DNA. At a recent webinar co-hosted by Nature Research, Professor Alexander Hoischen joined Principal Scientist Aaron Wenger to discuss how advances in long-read sequencing and structural variant calling algorithms have made it possible to affordably detect the more than 20,000 such variants that are…
We’re told to avoid sugar and refined carbohydrates if we want our teeth to remain strong and cavity-free. But what is the role of microbiota in our oral health? Cavities – or caries – actually occur as the result of bacterial infection that leads to sustained decalcification of tooth enamel and the layer beneath it, the dentin. Left unchecked, it can reach the tooth’s inner layer, with its soft pulp and sensitive nerve fibers, and, in some cases, can cause serious complications such as phylogenetic osteomyelitis and the life-threatening bacterial endocarditis. In addition to diet and host factors, the occurrence…
At the HudsonAlpha Institute for Biotechnology, scientists are building on advances in agricultural research to power a clinical pediatric program. For this work, they’re using the Sequel System to perform whole-genome sequencing on trios of children with developmental disabilities and their parents. HudsonAlpha researchers have been using SMRT Sequencing to resolve challenging plant genomes, deploying a Sequel System and a PacBio RS II for these complex projects. The successfulness of that program led the institute to add a second Sequel System for clinical use. The organization is part of the NIH-funded Clinical Sequencing Exploratory Research Program, with faculty investigator Greg…
Many scientists who participated in the original Human Genome Project shared a grand vision that individual genomes would one day be part of routine medical care. Genomics veteran Richard Gibbs, founder and Director of the Genome Sequencing Center at Baylor College of Medicine, tells Mendelspod host Theral Timpson in a new podcast interview that “we are more than halfway [there].” In the podcast, Gibbs shares his perspective on the complementary roles that genomics and genetics approaches have in driving our understanding of human biology. He noted that long before the Human Genome Project gained momentum, the discovery of human single…
PacBio customer HistoGenetics was just awarded a major, multi-year contract to perform HLA typing on as many as thousands of samples per week using SMRT Sequencing. The company is a pioneer and global leader in high-resolution sequence-based HLA typing services. As blog readers know, HLA typing involves analysis of highly polymorphic human leukocyte antigen (HLA) genes comprised within the major histocompatibility complex (MHC) on chromosome 6. Accurate HLA typing is essential for research on donor recipient tissue matching during transplantation, autoimmune disease-association studies, drug hypersensitivity research, and several other applications. But the complexity of the region, which contains thousands of…
Happy DNA Day, everyone! This scientific celebration has us reflecting on the many advancements the community has made in the past year. For a molecule that is sequenced thousands of times a day all over the world, there is still much to learn. Today we’d like to honor some of the remarkable science enabled by SMRT Sequencing since last year’s DNA Day. Scientists have continued to make progress exploring regions of the genome that have long been considered intractable. Two of our favorite stories this year came from the always-challenging Y chromosome. Researchers studying the mosquitoes that carry malaria…
We’re already looking forward to next month’s Personalized Medicine World Conference. Long before “precision medicine” was an industry catchphrase, PMWC was bringing together stakeholders from genomics companies and academic research, regulatory agencies, clinical groups, pharma/biotech, and more. Launched in 2009, the meeting has prompted important discussions as well as insight about how to move the field forward in a thoughtful way. From January 24th to the 27th, some 1,200 PMWC attendees will descend on the Computer History Museum in Mountain View, Calif. The event will kick off with a reception honoring the four awardees of this conference: Merck’s Roger Perlmutter…