STRÁNSKÁ, Kamila, Sabina ADAMOVÁ, Michaela BOHÚNOVÁ, Jan SVATOŇ, Karol PÁL, Eva ONDROUŠKOVÁ, Marie JAROŠOVÁ, Kristýna ZÁVACKÁ, Karolína ČERNOVSKÁ, Jakub Paweł PORC, Filip PARDY, Boris TICHÝ, Šárka POSPÍŠILOVÁ, Jana KOTAŠKOVÁ and Karla PLEVOVÁ. Solving complex karyotypes in leukemia samples using long-read sequencing. In European Human Genetics Conference (ESHG), Glasgow, United Kingdom. 2023.
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Basic information
Original name Solving complex karyotypes in leukemia samples using long-read sequencing.
Authors STRÁNSKÁ, Kamila (203 Czech Republic, belonging to the institution), Sabina ADAMOVÁ (203 Czech Republic, belonging to the institution), Michaela BOHÚNOVÁ (703 Slovakia, belonging to the institution), Jan SVATOŇ (203 Czech Republic, belonging to the institution), Karol PÁL (703 Slovakia, belonging to the institution), Eva ONDROUŠKOVÁ (203 Czech Republic, belonging to the institution), Marie JAROŠOVÁ (203 Czech Republic, belonging to the institution), Kristýna ZÁVACKÁ (203 Czech Republic, belonging to the institution), Karolína ČERNOVSKÁ (203 Czech Republic, belonging to the institution), Jakub Paweł PORC (616 Poland, belonging to the institution), Filip PARDY (203 Czech Republic, belonging to the institution), Boris TICHÝ (203 Czech Republic, belonging to the institution), Šárka POSPÍŠILOVÁ (203 Czech Republic, guarantor, belonging to the institution), Jana KOTAŠKOVÁ (203 Czech Republic, belonging to the institution) and Karla PLEVOVÁ (203 Czech Republic, belonging to the institution).
Edition European Human Genetics Conference (ESHG), Glasgow, United Kingdom, 2023.
Other information
Original language English
Type of outcome Conference abstract
Field of Study 30204 Oncology
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14740/23:00132999
Organization unit Central European Institute of Technology
Keywords in English long-read sequencing; chronic lymphocytic leukemia;
Tags NÚVR_CEITEC, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Eva Dubská, učo 77638. Changed: 25/3/2024 11:27.
Abstract
Highly complex karyotypes represent an adverse prognostic marker in leukemia samples. Their detailed study is substantive to identify specific genomic defects contributing to the deterioration of the disease course. Methods of classical and molecular cytogenomics are widely used in laboratory diagnostics to detect chromosomal aberrations, but their resolution is limited. We aim to employ Oxford Nanopore whole genome long-read sequencing to decipher cancer genome in difficult and ambiguous cases of chronic lymphocytic leukemia with complex karyotypes. Methods: Complex karyotype cases were identified and characterized using classical (IL-2/CpG-stimulated chromosomal banding) and molecular (24xCyte Multicolor FISH, CytoScan HD Array) cytogenomics. For long-read sequencing, high molecular weight DNA was isolated using chloroform-isopropanol extraction, fragmented using an injection needle, and short DNA fragments were eliminated (SRE XS Kit). The sequencing libraries were prepared using Ligation Sequencing Kit and sequenced on the MinION or PromethION sequencer. Sequences were aligned to the hg19 human genome reference, and structural variants were identified using the split read method, filtered, and annotated. Results/Conclusion: For each patient, we obtained sequencing data enabling 10× (MinION), or >20× (PromethION) average coverage of the genome. We performed a comprehensive comparison of long-read sequencing results with those of classical and molecular cytogenomics and assessed the benefits and shortcomings of long-read sequencing in deciphering the structure of genomic rearrangements in the tested chronic lymphocytic leukemia cases. Long-read sequencing provides more accurate characterization of breakpoints and majority of genome rearrangement events.
Links
LM2023067, research and development projectName: Národní centrum lékařské genomiky
Investor: Ministry of Education, Youth and Sports of the CR, NCMG: The National Centre for Medical Genomic
LX22NPO5102, research and development projectName: Národní ústav pro výzkum rakoviny (Acronym: NÚVR)
Investor: Ministry of Education, Youth and Sports of the CR, National institute for cancer research, 5.1 EXCELES
MUNI/A/1224/2022, interní kód MUName: Nové přístupy ve výzkumu, diagnostice a terapii hematologických malignit X
Investor: Masaryk University
NU21-08-00237, research and development projectName: Pokročilé sekvenační metody pro analýzu strukturních přestaveb nádorového genomu
Investor: Ministry of Health of the CR, Advanced sequencing methods for deciphering structural variants in cancer genome, Subprogram 1 - standard
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