Fritz Sedlazeck, Ph.D.

Assistant Professor

Fritz Sedlazeck, Ph.D.

Contact information


2008–2012    Dr. rer. nat, Bioinformatics, University of Vienna.
2004–2008    Dipl. Ing. (FH), Bioinformatics, Upper Austria University of Applied Sciences, Hagenberg

Research Interests

My research focuses on the development of scalable algorithms to assess the variability in genomes in terms of single nucleotide polymorphisms (SNP) as well as structural variations (SVs) within and among populations. I have a strong background in computer science, especially in leveraging high throughput architectures ranging from highly parallel graphics cards, over clusters, or cloud architectures. My training in genomics started in 2008, when I started my PhD in computational biology where I designed algorithms to investigate genomic variability of model and non-model organisms through the alignment of short reads. During my PhD and following my entire career I was always intrigued to investigate genomic variability being it in across tissues as well as within populations or across populations. This drove my training and the fascination how variable genomes are and investigating the impact of such variability. To assess these, I collaborated and initiated efforts to determine which technologies or methodologies were most appropriate to discover variations of different forms as well as the biases that they contain. This work just recently leads to novel insights in structural variations and their genotypic and phenotypic impact. In 2014 I joined the lab of Michael Schatz at Cold Spring Harbor Laboratory and later at Johns Hopkins University to broaden my knowledge about de novo assemblies and their possibilities to assess variability. Over these two years I obtained insights into novel technologies (long reads and linked reads), which often allow a more precise detection of genomic variability and its assessment with respect to the individual haplotypes.

Over my young career as a scientist I followed a clear path to investigate genomic variability starting with SNPs and focusing over the last 5 years on structural variations. I have successfully co supervised 5 students, initiated successful international collaborations as well as lead three projects resulting in last author publications.


Sedlazeck FJ, Rescheneder P, Smolka M, et al. Accurate detection of complex structural variations using single-molecule sequencing. Nat Methods. 2018;15(6):461-468. doi:10.1038/s41592-018-0001-7.

Dennenmoser S, Sedlazeck FJ, Schatz MC, Altmüller J, Zytnicki M, Nolte AW. Genome-wide patterns of transposon proliferation in an evolutionary young hybrid fish. Mol Ecol. 2018. doi:10.1111/mec.14969.

Sedlazeck FJ, Lee H, Darby CA, Schatz MC. Piercing the dark matter: bioinformatics of long-range sequencing and mapping. Nat Rev Genet. 2018. doi:10.1038/s41576-018-0003-4.

Nattestad M, Goodwin S, Ng K, et al. Complex rearrangements and oncogene amplifications revealed by long-read DNA and RNA sequencing of a breast cancer cell line. Genome Res. 2018;28(8):1126-1135. doi:10.1101/gr.231100.117.

Sedlazeck FJ, Dhroso A, Bodian DL, Paschall J, Hermes F, Zook JM. Tools for annotation and comparison of structural variation. F1000Res. 2017;6:1795. doi:10.12688/f1000research.12516.1.

Dolgalev I, Sedlazeck FJ, Busby B. DangerTrack: A scoring system to detect difficult-to-assess regions. F1000Res. 2017;6:443. doi:10.12688/f1000research.11254.1.

Dennenmoser S, Sedlazeck FJ, Iwaszkiewicz E, Li X-Y, Altmüller J, Nolte AW. Copy number increases of transposable elements and protein-coding genes in an invasive fish of hybrid origin. Mol Ecol. 2017;26(18):4712-4724. doi:10.1111/mec.14134.

Vurture GW, Sedlazeck FJ, Nattestad M, et al. GenomeScope: fast reference-free genome profiling from short reads. Bioinformatics. 2017;33(14):2202-2204. doi:10.1093/bioinformatics/btx153.

Vij S, Kuhl H, Kuznetsova IS, et al. Chromosomal-Level Assembly of the Asian Seabass Genome Using Long Sequence Reads and Multi-layered Scaffolding. PLoS Genet. 2016;12(4):e1005954. doi:10.1371/journal.pgen.1005954.