I am currently a Postdoctoral Fellow with Eleazar Eskin (Department of Computer Science) at  UCLA. I am holding Collaboratory Fellowship from Institute for Quantitative and Computational Biosciences (QCB).

My research focuses on developing bioinformatics methods to leverage large-scale high-throughput genomics datasets to better understand the biology of disease. My flagship product is Read Origin Protocol (ROP),  a tool for discovering the source of all RNA-Seq reads originated from complex RNA molecules recombined T and B cell receptors and microbial communities. ROP was applied across 1 trillion reads across 10641 samples. I am also interested in bioinformatics education and pedagogy. I am leading an undergraduate research group, focused on genomic research. My philosophy on how to engage undergraduates in genomic research is presented here. I am also interested in engaging the global community in bioinformatics training and research.

Here is my : CVTeaching Statement 


Email: smangul@ucla.edu


  • January 30, 2019. Serghei is an invited speaker at Second International Meeting on Oncology Research in Bael, Brazil. His talk covers “Dumpster diving in RNA-sequencing to find the source of 1 trillion reads across GTEx human tissues.”
  • January 3, 2019. Serghei is an invited speaker at Pacific Symposium on Biocomputing (PSB) 2019 in Kohala Coast, Hawaii, USA. His talk covers: “Seeing Beyond the Target: Constructing germline research cohorts from clinical tumor sequencing.”
  • December 18, 2018. New preprint!! Our preprint about shortcomings in microbial databases is live! We show that the overlap of fungal species is alarmingly small (<2%). Work led by a team of talented undergrads — Caitlin Loeffler and Aaron Karlsberg. This is a collaboration with David Koslicki.  The preprint is available at  https://www.biorxiv.org/content/early/2018/12/17/497867 
  • December 6, 2018New preprint! Our preprint about bioinformatics training to boost research capacities in resource-limited regions is live! This is a collaboration with Ben Langmead, Javier Sanchez Galan, Ian Toma, Pavel Pevzner. The preprint is available at https://peerj.com/preprints/27415/?td=tw
  • October 25, 2018. New preprint! Our preprint about software crisis in computational biology is live! We have performed a review of usability and archival stability of published omics tools and resources. We have found that 28% of the tools are impossible to install.

    The preprint is available at https://doi.org/10.1101/452532, The preprint was ranked #22 among 40,000 bioRxiv.org preprints according to Altmetric Attention Score

  • September 11, 2018. News! Slides from my highlight talk about the origin of 1 trillion RNA-Seq reads across diverse adult human tissues at ECCB 2018 are available here.

  • August 30, 2018. News! Slides from my talk at ACM-BCB 2018 are available here.
  • August 8, 2018.  My learning materials “Introduction to UNIX command line” have been chosen for inclusion in a NIBLSE Learning Resource Incubator.  The incubator will bring together a small group of teaching and disciplinary experts to customize the materials so that they are accessible to a different audience, teaching setting, or course context.
  • July 8, 2018. News! Slides from my talk at ISMB 2018 Education about involving undergraduates in genomics research are online [pdf]
  • May 10, 2018: New paper! Our paper about increased blood microbial diversity in schizophrenia is published in Translational Psychiatry [paper] [preprint]
  • New paper! Our paper about involving undergraduates in genomics research to narrow the education-research gap was published in Nature Biotechnology [preprint] [paper] [catalog of resources]
  • News! Slides from my talk at RECOMB-Seq 2018 are available here.
  • News! Slides from my talk at NGS2018 are available here. The talk was selected as the best oral presentation [Twitter]
  • New paper! The Read Origin Protocol published in Genome Biology. We created easy to use package () for those who want to dive into dumpsters of unmapped reads. ROP was applied across 1 trillion reads from 10641 samples [paper]
  • New preprint! Our preprint about a novel method to profile viral and fungal organism in metagenomics samples is online at bioRxiv [preprint]
  • News! Slides from my talk at ICCABS 2017 are online.
  • News! Slides from my talk at ASHG 2017 are online.
  • News! Slides from my talk at [BC]2 2017 are online.
  • News! Slides from my talk at Workshop on Benchmarking: Incentives and Best Practices across Scientific Disciplines ([BC]2 2017) are online.
  • New preprint! Our preprint about best practices for conducting benchmarking in the most comprehensive and reproducible way is online at PeerJ Preprints [preprint]
  • New preprint! Our preprint about involving undergraduates in genomics research to narrow the education-research gap is online at PeerJ Preprints [preprint] [resources]
  • New paper! Our new paper “Addressing the digital divide in contemporary biology: Lessons from teaching UNIX” is published in Trends in Biotechnology (Cell press). It was the top tweeted story in bioinformatics (according to https://twitter.com/rnomics). [paper] [preprint] [teaching materials] [resources]
  • News! Slides from my talk at ISMB 2017 (HiTSeq 2017) are online.
  • News! Slides from my talk at ISMB 2017 workshop on Critical Assessment of Massive Data Analysis (CAMDA 2017) are online.
  • New release! New release of ROP (v1.0.7) is available here. ROP now accepts a mixture of mapped and unmapped reads (in bam file) to profile immune repertoires. We have added  ggprofilePlus.py to randomly assign multi-mapped reads into genomic categories considering estimated gene expression levels.
  • New software! We released UMI-Reducer : a computational method allowing to differentiate  PCR duplicates from biological duplicates based on the UMIs (U nique Molecular Identifiers). This is a collaboration with Kelsey Martin Lab. Details about the tool are available in biorxiv  preprint
  • New release! New release of ROP (v1.0.6) is available here.We have switched from IgBLAST to ImReP to profile B and T cell receptor repertoires.  ImReP shows superior accuracy compared to existing tools  (see our manuscript “Profiling adaptive immune repertoires across multiple human tissues by RNA Sequencing” available at bioRxiv).
  • New release! New release of ImReP (v0.3) is available here. The various options have been added. A detailed tutorial is available here. Toy example with simulated receptor-derived reads is now distributed with the tool.
  • News! Slides from my talk at PSB 2017 workshop on Open Data for Discovery Science are online.
  • New release! New release of ImReP (v0.2) is available here.  A detailed tutorial is available here.
  • New software! We released ImReP :  a novel computational method for rapid and accurate profiling of the adaptive immune repertoire from regular RNA-Seq data.  ImReP is able to quantify individual immune responses based on a recombination landscape of genes encoding B and T cell receptors.
  • New preprint! Our paper about  immune repertoires profiling from RNA-Seq across 53 various GTEx tissues is online at bioRxiv [preprint] [software]
  • New paper! Discovering SNPs Regulating Human Gene Expression Using Allele-Specific Expression from RNA-Seq Data. Genetics [paper] [blog] [software]
  • News! Slides from my talk at ASHG 2016 are online.
  • News! Slides from my talk at Workshop on Computational Challenges of Third Generation DNA Sequencing Data Analysis (ECCB 2016) are online.
  • New release! New release of the ROP (v 1.0.5) is available here. Thanks to contributions from Jeremy Rotman, Benjamin Statz, William Van Der Wey, Kevin Wesel at Bruins-In-Genomics (B.I.G.) Summer Program . Special thanks for Linus Chen and Kevin Hsieh for improving the code and developing ROP-mouse.
  • New release! New release of ROP (v 1.0.4) is available here.  Now we accept more formats (.fastq, bam, fasta, fastq.gz). ROP now is using a custom script to identify low-quality reads.
  • Journal Club!  I am leading the Journal Club about the interactions of the microbiome and immune system. We will be discussing how to study the interactions of the microbiome and immune system and how both are affected by genetics. Also, we will be discussing the methods devoted to studying the immune system and microbiome.  More details here.
  • UNIX Online Tutorial! We present three video recordings of workshops developed under the UCLA Institute for Quantitative and Computational Biosciences. The workshop provides just enough information for students with no computational background to get started using Unix for analytical tasks.
  • New release! New release of the ROP (v 1.0.3) is available here.  It includes new options and improvements. The list of the tools, parameters and reference databases  used by the ROP is now saved to a log file. More details here.
  • New preprint! Our preprint about microbial communities in human blood and disease specific effects is online at bioRxiv [preprint] [in the news] [scientific digest]
  • New preprint! Our preprint on how to compare microbial communities with no reference is online at bioRxiv [preprint]
  • New paper! Our paper about haplotype phasing of the transcriptome is online at Lecture Notes in Computer Science (accepted as ISBRA 2016) [paper] [preprint]
  • New release! New release of the ROP (v 1.0.2) is available here.  ROP 1.0.2 is a maintenance release with the minor changes.
  • New release! New release of the ROP (v 1.0.1) is available here. The functionality to run the targeted analysis for your samples been added. For example you can run antibody profiling for your data skipping all other steps. The current release also allows ROP to accept the input (unmapped reads) in the .bam and .fastq.gz formats
  • New software! We released ROP : read origin protocol! ROP is a computational protocol aimed to discover the source of all (98.8%) reads, originated from complex RNA molecules, recombinant antibodies and microbial communities.   ROP profiles repeats, circRNAs, gene fusions, trans-splicing events, recombined B and T cell receptors and microbial communities.
  • New paper! Our paper on assembling rare and closely related mutant variants of HIV virus from long single molecule reads is online at Lecture Notes in Computer Science (accepted as RECOMB 2016) [paper] [preprint]
  • New tutorial! Our tutorial “Human Microbiome Analysis: Computational Techniques and Challenges”  was accepted for BC2 conference.