VarDetect: a nucleotide VarDetect: a nucleotide sequence variation exploratory sequence variation exploratory tool tool VarDetect VarDetect Chumpol Ngamphiw Chumpol Ngamphiw 1 , Supasak Kulawonganunchai , Supasak Kulawonganunchai 2 , , Anunchai Assawamakin Anunchai Assawamakin 3 , Ekachai Jenwitheesuk , Ekachai Jenwitheesuk 1 and Sissades Tongsima and Sissades Tongsima 1 1 Genome Institute, National Center for Genetic Engineering and Biotechnology, Thailand 2 Department of Computer Science, School of Engineering and Technology, Asian Institute of Technology, Thailand 3 Division of Medical Genetics, Siriraj Hospital, Mahidol University, Thailand
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
VarDetect: a nucleotide VarDetect: a nucleotide sequence variation exploratory sequence variation exploratory
- Tocharoentanaphol C, et al. : Evaluation of resequencing on number of tag SNPs of 13 atherosclerosis-related genes in Thai population. J Hum Genet 2008, 53:74–86.- Thailand SNP discovery project : http://www.biotec.or.th/thaisnp
14
ConclusionsConclusions• We presented novel algorithm to interpret fluorescent-based
chromatograms in an automatic fashion and platform independent (Java).
• Three main heuristic procedures are employed:• Turning point (bell shape) detection (PnR algorithm). • Increasing the SNP detection confidence by checking the difference between vicinity and observed quality values (Qv - Qo).• Introduction of CodeMap to detect pattern of SNP and Indel.
• VarDetect offers the most features including the ability to detect SNPs from pooled DNA samples.
• VarDetect use of XML annotated reference sequence to cross check the SNP discovery results within the tool without using external applications.
• VarDetect’s heuristics minimize both false positive and negative errors reducing the effort needed to detect and validate SNPs, making it the tool of choice for automatic SNP detection.
15
AcknowledgementsAcknowledgements
Dr. Mazazumi Takahashi, Centre National de Genotypage (CNG), France Dr. Philip Shaw Dr. Prasit Palittapolgarnpim Dr. Chintana Tocharoentanaphol, Chulabhorn Research Institute Dr. Chanin Limwongse, Siriraj Hospital, Mahidol University Thailand SNP discovery project National Center for Genetic Engineering and Biotechnology (BIOTEC)
Thank You For Your Thank You For Your AttentionAttention
1 Genome Institute, National Center for Genetic Engineering and Biotechnology, Thailand2 Department of Computer Science, School of Engineering and Technology,
Asian Institute of Technology, Thailand3 Division of Medical Genetics, Siriraj Hospital, Mahidol University, Thailand