The sequencing of individual human genomes may soon be routine in certain clinical contexts - for example, to diagnose suspected Mendelian disorders in pediatric patients, or to guide therapeutic decisions in cancer treatment. However, even as its cost plummets to $1,000 or less, the value of a personal genome will remain highly constrained by the poor interpretability of individual genetic variants. For example, although BRCA1 and BRCA2 are clinically actionable when loss-of-function mutations are present, and although both genes have been sequenced in >50,000 patients over the past decade, the result returned to patients is often still variant of uncertain significance. This challenge will profoudly deepen as clinical sequencing accelerates and as the list of clinically actionable genes grows. To address this, we propose to develop a novel approach for experimentally measuring the functional consequences of such variants of uncertain significance at an unprecedented scale, as well as innovative computational approaches for estimating the relative pathogenicity of any possible variant in the entire human genome. For clinically relevant genes, we will exploit massively parallel technologies for nucleic acid synthesis and sequencing towards a new paradigm for dissecting function at saturating resolution. The application of this paradigm will yield experimentally grounded predictions for the functional consequences of all possible single residue variants, thereby informing the interpretation of variants newly observed in patients. For the remainder of the human genome, we will develop a framework for integrating a proliferating diversity of coding and non-coding annotations to a single metric. We will then calculate this metric of relative pathogenicity for all possible single nucleotide variants in the human genome. We anticipate that these methods and the resulting pre-computations of pathogenicity will broadly enable the interpretation of human genome sequences in diverse clinical and research settings.
As we enter an era of ?personalized medicine?, the sequencing of individual human genomes will be increasingly important to public health, contributing towards the unraveling of the genetic basis of human disease and serving a growing role in patient care. However, the interpretation of genetic ?variants of uncertain significance? represents a fundamental obstacle for the field. This project will develop several innovative approaches for estimating the consequences of all possible genetic variants of clinically relevant genes. The resulting ?pre-computations? of pathogenicity will broadly enable the interpretation of human genome sequences in diverse clinical and research settings.
|Gasperini, Molly; Findlay, Gregory M; McKenna, Aaron et al. (2017) CRISPR/Cas9-Mediated Scanning for Regulatory Elements Required for HPRT1 Expression via Thousands of Large, Programmed Genomic Deletions. Am J Hum Genet 101:192-205|
|Ramani, Vijay; Deng, Xinxian; Qiu, Ruolan et al. (2017) Massively multiplex single-cell Hi-C. Nat Methods 14:263-266|
|Cao, Junyue; Packer, Jonathan S; Ramani, Vijay et al. (2017) Comprehensive single-cell transcriptional profiling of a multicellular organism. Science 357:661-667|
|Starita, Lea M; Ahituv, Nadav; Dunham, Maitreya J et al. (2017) Variant Interpretation: Functional Assays to the Rescue. Am J Hum Genet 101:315-325|
|Snyder, Matthew W; Kircher, Martin; Hill, Andrew J et al. (2016) Cell-free DNA Comprises an In Vivo Nucleosome Footprint that Informs Its Tissues-Of-Origin. Cell 164:57-68|
|McKenna, Aaron; Findlay, Gregory M; Gagnon, James A et al. (2016) Whole-organism lineage tracing by combinatorial and cumulative genome editing. Science 353:aaf7907|
|Ramani, Vijay; Cusanovich, Darren A; Hause, Ronald J et al. (2016) Mapping 3D genome architecture through in situ DNase Hi-C. Nat Protoc 11:2104-21|
|Cusanovich, Darren A; Daza, Riza; Adey, Andrew et al. (2015) Multiplex single cell profiling of chromatin accessibility by combinatorial cellular indexing. Science 348:910-4|
|Snyder, Matthew W; Simmons, LaVone E; Kitzman, Jacob O et al. (2015) Copy-number variation and false positive prenatal aneuploidy screening results. N Engl J Med 372:1639-45|
|Kitzman, Jacob O; Starita, Lea M; Lo, Russell S et al. (2015) Massively parallel single-amino-acid mutagenesis. Nat Methods 12:203-6, 4 p following 206|
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