9 results on '"Comarova, Zoia"'
Search Results
2. A comprehensive benchmarking of WGS-based deletion structural variant callers.
- Author
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Sarwal, Varuni, Niehus, Sebastian, Ayyala, Ram, Kim, Minyoung, Sarkar, Aditya, Chang, Sei, Lu, Angela, Rajkumar, Neha, Darfci-Maher, Nicholas, Littman, Russell, Chhugani, Karishma, Soylev, Arda, Comarova, Zoia, Wesel, Emily, Castellanos, Jacqueline, Chikka, Rahul, Distler, Margaret G, Eskin, Eleazar, Flint, Jonathan, and Mangul, Serghei
- Subjects
Biological Sciences ,Genetics ,Biotechnology ,Human Genome ,Generic health relevance ,Good Health and Well Being ,Animals ,Benchmarking ,Genome ,Human ,High-Throughput Nucleotide Sequencing ,Humans ,Mice ,Whole Genome Sequencing ,Variant calling ,Structural Variant ,Bioinformatics ,Biochemistry and Cell Biology ,Computation Theory and Mathematics ,Other Information and Computing Sciences ,Biochemistry and cell biology ,Bioinformatics and computational biology - Abstract
Advances in whole-genome sequencing (WGS) promise to enable the accurate and comprehensive structural variant (SV) discovery. Dissecting SVs from WGS data presents a substantial number of challenges and a plethora of SV detection methods have been developed. Currently, evidence that investigators can use to select appropriate SV detection tools is lacking. In this article, we have evaluated the performance of SV detection tools on mouse and human WGS data using a comprehensive polymerase chain reaction-confirmed gold standard set of SVs and the genome-in-a-bottle variant set, respectively. In contrast to the previous benchmarking studies, our gold standard dataset included a complete set of SVs allowing us to report both precision and sensitivity rates of the SV detection methods. Our study investigates the ability of the methods to detect deletions, thus providing an optimistic estimate of SV detection performance as the SV detection methods that fail to detect deletions are likely to miss more complex SVs. We found that SV detection tools varied widely in their performance, with several methods providing a good balance between sensitivity and precision. Additionally, we have determined the SV callers best suited for low- and ultralow-pass sequencing data as well as for different deletion length categories.
- Published
- 2022
3. Unlocking capacities of genomics for the COVID-19 response and future pandemics
- Author
-
Knyazev, Sergey, Chhugani, Karishma, Sarwal, Varuni, Ayyala, Ram, Singh, Harman, Karthikeyan, Smruthi, Deshpande, Dhrithi, Baykal, Pelin Icer, Comarova, Zoia, Lu, Angela, Porozov, Yuri, Vasylyeva, Tetyana I, Wertheim, Joel O, Tierney, Braden T, Chiu, Charles Y, Sun, Ren, Wu, Aiping, Abedalthagafi, Malak S, Pak, Victoria M, Nagaraj, Shivashankar H, Smith, Adam L, Skums, Pavel, Pasaniuc, Bogdan, Komissarov, Andrey, Mason, Christopher E, Bortz, Eric, Lemey, Philippe, Kondrashov, Fyodor, Beerenwinkel, Niko, Lam, Tommy Tsan-Yuk, Wu, Nicholas C, Zelikovsky, Alex, Knight, Rob, Crandall, Keith A, and Mangul, Serghei
- Subjects
Biological Sciences ,Bioinformatics and Computational Biology ,Genetics ,Human Genome ,Networking and Information Technology R&D (NITRD) ,Vaccine Related ,Infectious Diseases ,Emerging Infectious Diseases ,Biotechnology ,Prevention ,Biodefense ,Generic health relevance ,Infection ,Good Health and Well Being ,COVID-19 ,Genomics ,Humans ,Pandemics ,SARS-CoV-2 ,Technology ,Medical and Health Sciences ,Developmental Biology ,Biological sciences - Abstract
During the COVID-19 pandemic, genomics and bioinformatics have emerged as essential public health tools. The genomic data acquired using these methods have supported the global health response, facilitated development of testing methods, and allowed timely tracking of novel SARS-CoV-2 variants. Yet the virtually unlimited potential for rapid generation and analysis of genomic data is also coupled with unique technical, scientific, and organizational challenges. Here, we discuss the application of genomic and computational methods for the efficient data driven COVID-19 response, advantages of democratization of viral sequencing around the world, and challenges associated with viral genome data collection and processing.
- Published
- 2022
4. Unlocking capacities of viral genomics for the COVID-19 pandemic response
- Author
-
Knyazev, Sergey, Chhugani, Karishma, Sarwal, Varuni, Ayyala, Ram, Singh, Harman, Karthikeyan, Smruthi, Deshpande, Dhrithi, Comarova, Zoia, Lu, Angela, Porozov, Yuri, Wu, Aiping, Abedalthagafi, Malak, Nagaraj, Shivashankar, Smith, Adam, Skums, Pavel, Ladner, Jason, Lam, Tommy Tsan-Yuk, Wu, Nicholas, Zelikovsky, Alex, Knight, Rob, Crandall, Keith, and Mangul, Serghei
- Subjects
Quantitative Biology - Genomics ,Quantitative Biology - Populations and Evolution - Abstract
More than any other infectious disease epidemic, the COVID-19 pandemic has been characterized by the generation of large volumes of viral genomic data at an incredible pace due to recent advances in high-throughput sequencing technologies, the rapid global spread of SARS-CoV-2, and its persistent threat to public health. However, distinguishing the most epidemiologically relevant information encoded in these vast amounts of data requires substantial effort across the research and public health communities. Studies of SARS-CoV-2 genomes have been critical in tracking the spread of variants and understanding its epidemic dynamics, and may prove crucial for controlling future epidemics and alleviating significant public health burdens. Together, genomic data and bioinformatics methods enable broad-scale investigations of the spread of SARS-CoV-2 at the local, national, and global scales and allow researchers the ability to efficiently track the emergence of novel variants, reconstruct epidemic dynamics, and provide important insights into drug and vaccine development and disease control. Here, we discuss the tremendous opportunities that genomics offers to unlock the effective use of SARS-CoV-2 genomic data for efficient public health surveillance and guiding timely responses to COVID-19.
- Published
- 2021
5. comprehensive benchmarking of WGS-based deletion structural variant callers.
- Author
-
Sarwal, Varuni, Niehus, Sebastian, Ayyala, Ram, Kim, Minyoung, Sarkar, Aditya, Chang, Sei, Lu, Angela, Rajkumar, Neha, Darfci-Maher, Nicholas, Littman, Russell, Chhugani, Karishma, Soylev, Arda, Comarova, Zoia, Wesel, Emily, Castellanos, Jacqueline, Chikka, Rahul, Distler, Margaret G, Eskin, Eleazar, Flint, Jonathan, and Mangul, Serghei
- Subjects
NUCLEOTIDE sequencing - Abstract
Advances in whole-genome sequencing (WGS) promise to enable the accurate and comprehensive structural variant (SV) discovery. Dissecting SVs from WGS data presents a substantial number of challenges and a plethora of SV detection methods have been developed. Currently, evidence that investigators can use to select appropriate SV detection tools is lacking. In this article, we have evaluated the performance of SV detection tools on mouse and human WGS data using a comprehensive polymerase chain reaction-confirmed gold standard set of SVs and the genome-in-a-bottle variant set, respectively. In contrast to the previous benchmarking studies, our gold standard dataset included a complete set of SVs allowing us to report both precision and sensitivity rates of the SV detection methods. Our study investigates the ability of the methods to detect deletions, thus providing an optimistic estimate of SV detection performance as the SV detection methods that fail to detect deletions are likely to miss more complex SVs. We found that SV detection tools varied widely in their performance, with several methods providing a good balance between sensitivity and precision. Additionally, we have determined the SV callers best suited for low- and ultralow-pass sequencing data as well as for different deletion length categories. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
6. A comprehensive benchmarking of WGS-based structural variant callers
- Author
-
Sarwal, Varuni, primary, Niehus, Sebastian, additional, Ayyala, Ram, additional, Chang, Sei, additional, Lu, Angela, additional, Darci-Maher, Nicholas, additional, Littman, Russell, additional, Chhugani, Karishma, additional, Soylev, Arda, additional, Comarova, Zoia, additional, Wesel, Emily, additional, Castellanos, Jacqueline, additional, Chikka, Rahul, additional, Distler, Margaret G., additional, Eskin, Eleazar, additional, Flint, Jonathan, additional, and Mangul, Serghei, additional
- Published
- 2020
- Full Text
- View/download PDF
7. Assessment of Watershed Model Simplification and Potential Application in Small Ungaged Watersheds: A Case Study of Big Creek, Atlanta, GA
- Author
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Comarova, Zoia
- Abstract
Technological and methodological advances of the past few decades have provided hydrologists with advanced and increasingly complex hydrological models. These models improve our ability to simulate hydrological systems, but they also require a lot of detailed input data and, therefore, have a limited applicability in locations with poor data availability. From a case study of Big Creek watershed, a 186.4 km2 urbanizing watershed in Atlanta, GA, for which continuous flow data are available since 1960, this project investigates the relationship between model complexity, data availability and predictive performance in order to provide reliability factors for the use of reduced complexity models in areas with limited data availability, such as small ungaged watersheds in similar environments. My hope is to identify ways to increase model efficiency without sacrificing significant model reliability that will be transferable to ungaged watersheds.
- Published
- 2011
- Full Text
- View/download PDF
8. Assessment of Watershed Model Simplification and Potential Application in Small Ungaged Watersheds: A Case Study of Big Creek, Atlanta, GA
- Author
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Comarova, Zoia A, Ms
- Subjects
- Hydrological model, Ungaged watershed, Sensitivity, Model complexity, Geography, Geology
- Abstract
Technological and methodological advances of the past few decades have provided hydrologists with advanced and increasingly complex hydrological models. These models improve our ability to simulate hydrological systems, but they also require a lot of detailed input data and, therefore, have a limited applicability in locations with poor data availability. From a case study of Big Creek watershed, a 186.4 km2 urbanizing watershed in Atlanta, GA, for which continuous flow data are available since 1960, this project investigates the relationship between model complexity, data availability and predictive performance in order to provide reliability factors for the use of reduced complexity models in areas with limited data availability, such as small ungaged watersheds in similar environments. My hope is to identify ways to increase model efficiency without sacrificing significant model reliability that will be transferable to ungaged watersheds.
- Published
- 2011
9. Unlocking capacities of viral genomics for the COVID-19 pandemic response.
- Author
-
Knyazev S, Chhugani K, Sarwal V, Ayyala R, Singh H, Karthikeyan S, Deshpande D, Comarova Z, Lu A, Porozov Y, Wu A, Abedalthagafi MS, Nagaraj SH, Smith AL, Skums P, Ladner J, Lam TT, Wu NC, Zelikovsky A, Knight R, Crandall KA, and Mangul S
- Abstract
More than any other infectious disease epidemic, the COVID-19 pandemic has been characterized by the generation of large volumes of viral genomic data at an incredible pace due to recent advances in high-throughput sequencing technologies, the rapid global spread of SARS-CoV-2, and its persistent threat to public health. However, distinguishing the most epidemiologically relevant information encoded in these vast amounts of data requires substantial effort across the research and public health communities. Studies of SARS-CoV-2 genomes have been critical in tracking the spread of variants and understanding its epidemic dynamics, and may prove crucial for controlling future epidemics and alleviating significant public health burdens. Together, genomic data and bioinformatics methods enable broad-scale investigations of the spread of SARS-CoV-2 at the local, national, and global scales and allow researchers the ability to efficiently track the emergence of novel variants, reconstruct epidemic dynamics, and provide important insights into drug and vaccine development and disease control. Here, we discuss the tremendous opportunities that genomics offers to unlock the effective use of SARS-CoV-2 genomic data for efficient public health surveillance and guiding timely responses to COVID-19.
- Published
- 2021
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