Fereydoun Hormozdiari
fhormozd.bsky.social
Fereydoun Hormozdiari
@fhormozd.bsky.social
Associate Professor @ UC-Davis | Former Senior Director @ Exai Bio | Computational Biology, ML/AI, Genomics, RNA, Cancer
These current policies bring to mind that Persian poem, loosely translated as:

"A man was sawing off the branch on which he sat.
The Master of the garden looked on and said,
'If this man does harm, it is not to me,
But to his own self and well-being.'"
How bad will it be? Catastrophic.

Proposed cuts to #NSF, #NIH, and #NASA will set the US R&D landscape back 25 yrs+, cause economic and job loss now, and undermine innovations to come.

But, this is the WH's *proposed* budget.

Speak up now before it is too late.

(inflation adjusted $-s below)
June 1, 2025 at 5:38 PM
Reposted by Fereydoun Hormozdiari
D-1 for 2025 Krebs Symposium to honor the legacy of Dr. Edwin G. Krebs, our only Nobel Laureate and founding chair of the Biochemistry and Molecular Medicine Department. Science talk, posters and more. #UCDavisBMM #KrebsSymposium #GenomeResearch #NobelPrize #EdwinKrebs #BiochemIsMyJam
May 23, 2025 at 12:58 AM
Reposted by Fereydoun Hormozdiari
A new preprint on indexing pangenome graphs using an FM-index of the haplotypes and a tag array. Joint work with Parsa Eskandar and @benedictpaten.bsky.social.
Lossless Pangenome Indexing Using Tag Arrays
Pangenome graphs represent the genomic variation by encoding multiple haplotypes within a unified graph structure. However, efficient and lossless indexing of such structures remains challenging due t...
www.biorxiv.org
May 15, 2025 at 8:22 PM
Reposted by Fereydoun Hormozdiari
The human pangenome continues to grow and improve! Release 2 is here! Click through for the details, but this is a pretty amazing dataset including not just the phased assemblies, but PacBio HiFi, ONT Ultralong, Dovetail/Illumina Hi-C, PacBio Kinnex, and Illumina WGS for all samples
📢 HPRC Release 2 is here!

Now with phased genomes from 200+ individuals, a 5x increase from Release 1.

Explore sequencing data, assemblies, annotations & alignments in our interactive data explorer ⬇️:

humanpangenome.org/hprc-data-re...
May 12, 2025 at 1:52 PM
Reposted by Fereydoun Hormozdiari
NIH is allowing us to recruit postbacs and postdocs again. Please reach out if you are interested in working with us! Ad: genomeinformatics.github.io/jobs2025/
We are looking for postbacs and postdocs!
Join our team and contribute to the development of complete, personalized “telomere-to-telomere” (T2T) genome assemblies and the analysis of previously inaccessible regions of the genome! We are curre...
genomeinformatics.github.io
May 12, 2025 at 8:50 PM
Reposted by Fereydoun Hormozdiari
Advanced genomic analysis of 4 generation family offers new knowledge about genetic mutations & their transmission, including inherited variants & those that arise anew
@nature.com @uwgenome.bsky.social @eichlerlab.bsky.social @uwmedicine.bsky.social @utah.edu @pacbio.bsky.social
4 generations help science explore genome mutation rate - UW Medicine | Newsroom
bit.ly
April 23, 2025 at 8:53 PM
Reposted by Fereydoun Hormozdiari
Reposted by Fereydoun Hormozdiari
Will you join us for the 2025 Krebs Symposium on 05.23.25❓️ Enjoy the weekly trivia Q&As on Dr. Edwin Krebs, and register at bit.ly/2025krebs 🧬🔬👩‍🔬👨‍🔬 #UCDavisSOM #UCDavisBMM #KrebsSymposium #GenomeResearch #NobelPrize #EdwinKrebs #BiochemIsMyJam
April 19, 2025 at 2:36 AM
Reposted by Fereydoun Hormozdiari
minimap2 adds support for short read spliced RNA-seq alignment! lh3.github.io/2025/04/18/s...
Short RNA-seq read alignment with minimap2
lh3.github.io
April 18, 2025 at 9:58 PM
Reposted by Fereydoun Hormozdiari
Biology of Genomes is only 18 days away. The lineup is stellar!
meetings.cshl.edu/meetings.asp...
Biology of Genomes
Cold Spring Harbor Laboratory Meetings & Courses -- a private, non-profit institution with research programs in cancer, neuroscience, plant biology, genomics, bioinformatics.
meetings.cshl.edu
April 18, 2025 at 7:21 PM
Though it's an older result, it's more relevant than ever!

"In a reanalysis of a previous study of the familial risk of ASD, the heritability was estimated to be 83%, suggesting that genetic factors may explain most of the risk for ASD."

jamanetwork.com/journals/jam...
Reassessing the Heritability of Autism Spectrum Disorders
This study reanalyzes Swedish cohort data to assess the stability under alternative assumptions and models of a previous estimate of the heritability of autism spectrum disorder.
jamanetwork.com
April 18, 2025 at 5:59 PM
Reposted by Fereydoun Hormozdiari
China's wheat breeding history unveiled with 17 genome assemblies, revealing 249,976 structural variations, 49.03% over 1 Kb. Insights for breeding progress! PMID:39604736, Nature 2025, @Nature https://doi.org/10.1038/s41586-024-08277-0 #Medsky #Pharmsky #RNA #ASHG #ESHG 🧪
Pan-genome bridges wheat structural variations with habitat and breeding | Nature
Wheat is the second largest food crop with a very good breeding system and pedigree record in China. Investigating the genomic footprints of wheat cultivars will unveil potential avenues for future breeding efforts1,2. Here we report chromosome-level genome assemblies of 17 wheat cultivars that chronicle the breeding history of China. Comparative genomic analysis uncovered a wealth of structural rearrangements, identifying 249,976 structural variations with 49.03% (122,567) longer than 5 kb. Cultivars developed in 1980s displayed significant accumulations of structural variations, a pattern linked to the extensive incorporation of European and American varieties into breeding programmes of that era. We further proved that structural variations in the centromere-proximal regions are associated with a reduction of crossover events. We showed that common wheat evolved from spring to winter types via mutations and duplications of the VRN-A1 gene as an adaptation strategy to a changing
doi.org
April 5, 2025 at 2:10 AM
Exciting lineup of talks at this year’s Krebs Symposium, centered on genomics, covering broad topics—from the significance of studying genome diversity to the genomics of cancer, TB susceptibility, Fragile X, and Alzheimers. #UCDavisSOM #UCDavisBMM #KrebsSymposium #GenomeResearch #NobelPrize
Register at bit.ly/2025krebs for the 2025 Krebs Symposium on 05.23.25. Who is Dr. Edwin Krebs and why are we celebrating his legacy every year? Follow us to learn more! #UCDavisSOM #UCDavisBMM #KrebsSymposium #GenomeResearch #NobelPrize #EdwinKrebs #BiochemIsMyJam
April 4, 2025 at 11:41 PM
Check out our latest work on one of the first multi-modal cell-free RNA foundation models for blood surveillance and liquid biopsy applications, led by @genophoria.bsky.social, @babak-a.bsky.social, @mehrankr.bsky.social and Aiden Sababi
April 1, 2025 at 10:51 PM
Reposted by Fereydoun Hormozdiari
99% of new medicines developed by the pharmaceutical industry depend on NIH research jamanetwork.com/journals/jam...
Comparison of Research Spending on New Drug Approvals by the NIH vs the Pharmaceutical Industry
This cross-sectional study examines National Institutes of Health and pharmaceutical industry investments in recent drug approvals.
jamanetwork.com
March 10, 2025 at 2:15 PM
Stands up for science in Sacramento.
Stand Up for Science in Sacramento! Following the advice of awesome rally speakers: let’s keep this momentum and continue making noise 🔔🥁
March 10, 2025 at 5:39 PM
Reposted by Fereydoun Hormozdiari
HiFi long-read genomes for difficult-to-detect, clinically relevant variants www.cell.com/ajhg/abstrac... 🧬🖥️🧪
March 7, 2025 at 9:00 PM
Nice work of using graph convolutional neural networks for haplotype assembly!
ralphi: a deep reinforcement learning framework for haplotype assembly https://www.biorxiv.org/content/10.1101/2025.02.17.638151v1
February 26, 2025 at 5:05 PM
Reposted by Fereydoun Hormozdiari
@thejohnnyyu.bsky.social, @therealnima.bsky.social, and I, are excited to tell you about Tahoe-100M! The largest publicly available single-cell dataset that measures the effect of 1200 genes on 50 cell line models. The Vevo team has outdone itself. #Tahoe100M www.biorxiv.org/content/10.1...
Tahoe-100M: A Giga-Scale Single-Cell Perturbation Atlas for Context-Dependent Gene Function and Cellular Modeling
Building predictive models of the cell requires systematically mapping how perturbations reshape each cell's state, function, and behavior. Here, we present Tahoe-100M, a giga-scale single-cell atlas ...
www.biorxiv.org
February 25, 2025 at 1:25 PM
Our recent work, led by Luca Denti, explores pangenome graph augmentation using unassembled long reads.
Pangenome graph augmentation from unassembled long reads https://www.biorxiv.org/content/10.1101/2025.02.07.637057v1 🧬🖥️🧪 https://github.com/ldenti/palss
February 12, 2025 at 12:44 AM
Reposted by Fereydoun Hormozdiari
The latest from our group, led by Megan Ostrowski and @martyyang.bsky.social, is now published in final form (www.cell.com/cell/fulltex...! Many thanks to our excellent peer reviewers for suggesting several experiments (including CAF-1 perturbation) to really improve the study =) #epigenetics
The single-molecule accessibility landscape of newly replicated mammalian chromatin
By developing a long-read sequencing method to simultaneously map replication status and protein-DNA contacts in cells, Ostrowski, Yang, et al. show that newly replicated chromatin is enriched for unw...
www.cell.com
November 15, 2024 at 3:35 PM
January 22, 2025 at 7:25 PM
Reposted by Fereydoun Hormozdiari
Here's our latest, led by Drs. Riaz Gillani & Ryan Collins - we studied a type of inherited genetic event (structural variants) + risk of developing certain cancers in kids:
@danafarber.bsky.social @bostonchildrens.bsky.social @broadinstitute.org @science.org

www.science.org/doi/10.1126/...
Rare germline structural variants increase risk for pediatric solid tumors
Pediatric solid tumors are a leading cause of childhood disease mortality. In this work, we examined germline structural variants (SVs) as risk factors for pediatric extracranial solid tumors using ge...
www.science.org
January 2, 2025 at 11:38 PM
Reposted by Fereydoun Hormozdiari
The first preprint of 2025! Together with Matvei, @halfacrocodile.bsky.social, & our amazing team, we are excited to share PARADE: an AI framework for designing mRNA UTRs with enhanced cell-type specificity & stability. www.biorxiv.org/content/10.1...
A generative framework for enhanced cell-type specificity in rationally designed mRNAs
mRNA delivery offers new opportunities for disease treatment by directing cells to produce therapeutic proteins. However, designing highly stable mRNAs with programmable cell type-specificity remains ...
www.biorxiv.org
January 2, 2025 at 1:10 PM
Reposted by Fereydoun Hormozdiari
A new genomic study in Science encompassing more than 300 genomes spanning the last 50,000 years has revealed how a single wave of Neanderthal gene flow into early modern humans left an indelible mark on human evolution. scim.ag/4gkMvpz
Neanderthal ancestry through time: Insights from genomes of ancient and present-day humans
Gene flow from Neanderthals has shaped genetic and phenotypic variation in modern humans. We generated a catalog of Neanderthal ancestry segments in more than 300 genomes spanning the past 50,000 year...
scim.ag
December 17, 2024 at 5:55 PM