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Diego Ortega-Del Vecchyo

@delvecchyo.bsky.social
545 followers 514 following 154 posts

Associate professor @liigh-unam.bsky.social. Interested on theoretical population genetics and developing new computational methods to understand our past. He/him/his.

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Reposted by Diego Ortega-Del Vecchyo
Xinjun Zhang @zhanglabpopgen.bsky.social · 16/12/2025
Preprint online right before the holidays! Excited to share the first piece of work from the Zhang Lab, led by my absolutely stellar postdoc Michelle Kim! In this work, we ask how admixture, selection and demography shape complex trait genetics and GWAS performance www.biorxiv.org/content/10.6...
biorxiv.org
Determining the driving factors shaping genetic architecture of complex traits in recently admixed populations
Understanding the genetic architecture of complex traits in admixed populations remains challenging due to heterogeneous genetic backgrounds and demographic histories. Mischaracterizing admixture can ...
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Reposted by Diego Ortega-Del Vecchyo
Yun Deng @yundeng.bsky.social · 26/11/2025
Work from my amazing undergrad @leyan-wang.bsky.social is just preprinted! TL;DR: If you worry that ARG methods might fail on unphased data due to phasing errors, you may not need to. Check it out & consider reposting to support a great young scientist!
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Reposted by Diego Ortega-Del Vecchyo
Roshni Patel @roshnipatel.bsky.social · 01/12/2025
Excited to share work from my postdoc with @docedge.bsky.social and collaborators Matt Pennell and @jgschraiber.bsky.social, newly out over the weekend: www.biorxiv.org/content/10.1... (1/6)
biorxiv.org
Observational epidemiological studies can mitigate genetic confounding with the genetic relatedness matrix
Observational studies are commonly used in psychology and epidemiology to identify risk factors correlated with health outcomes. However, these studies are vulnerable to confounding when shared geneti...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 09/10/2025
Alessandro and I discussed a paper analyzing a deleterious genetic interaction that causes melanoma in swordtail fishes.
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Reposted by Diego Ortega-Del Vecchyo
Nature Reviews Cancer @natrevcancer.nature.com · 07/10/2025
In this #Journal Club, @delvecchyo.bsky.social &Co discuss a study that mapped the genetic basis of hybrid incompatibility in swordtail fish, revealing #melanoma-causing gene interactions that reduce survival in natural hybrid populations. 📖 ⬇️
nature.com
Discovering genetic interactions that cause melanoma in a non-model species - Nature Reviews Cancer
In this Journal Club, Lopez-Hernandez and Ortega-Del Vecchyo discuss a study that mapped the genetic basis of hybrid incompatibility in swordtail fish, revealing melanoma-causing gene interactions that reduce survival in natural hybrid populations.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 24/09/2025
Alessandro and I discussed this great paper www.science.org/doi/10.1126/... that investigates a deleterious genetic interaction that causes melanoma.
science.org
Natural hybridization reveals incompatible alleles that cause melanoma in swordtail fish
A combination of mapping approaches identifies interacting genes that lead to incompatibility and melanoma in natural hybrid fish.
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Reposted by Diego Ortega-Del Vecchyo
Fernando Villanea @fervillanea.bsky.social · 21/08/2025
Our paper on the evolution of MUC19 in humans, Neanderthals, and Denisovans is finally out today in Science! This has been a six-year effort by 13 authors to weave together 3 separate but related evolutionary stories around this one gene (more on thread 🧵). www.science.org/doi/10.1126/...
science.org
The MUC19 gene: An evolutionary history of recurrent introgression and natural selection
We study the gene MUC19, for which some modern humans carry a Denisovan-like haplotype. MUC19 is a mucin, a glycoprotein that forms gels with various biological functions. We find diagnostic variants ...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 22/08/2025
Gaceta UNAM cubrió nuestra investigación sobre el impacto de la selección natural en la predicción genética de rasgos complejos en individuos del pasado: www.gaceta.unam.mx/la-seleccion...
gaceta.unam.mx
La selección natural complica las predicciones genéticas - Gaceta UNAM
Hacen menos confiables los análisis de características físicas en humanos antiguos, afirma artículo publicado en la revista científica The American Journal of Human Genetics, en el cual participa un g...
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Reposted by Diego Ortega-Del Vecchyo
Emily Josephs @emjo.bsky.social · 12/06/2025
Hey, Miles' @milesroberts.bsky.social beautiful paper showing that sequence diversity missed by standard methods contributes to Lewontin's paradox is officially published in @evolletters.bsky.social. academic.oup.com/evlett/advan...
academic.oup.com
k-mer-based diversity scales with population size proxies more than nucleotide diversity in a meta-analysis of 98 plant species
Abstract. A key prediction of neutral theory is that the level of genetic diversity in a population should scale with population size. However, as was note
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Reposted by Diego Ortega-Del Vecchyo
Arun Durvasula @arundurvasula.bsky.social · 11/06/2025
Our review of recent Sequentially Markovian Coalescent methods is up on arXiv: arxiv.org/abs/2506.00692 (based on last year's @official-smbe.bsky.social symposium)
arxiv.org
Not Just $N_e$ $N_e$-more: New Applications for SMC from Ecology to Phylogenies
Genomes contain the mutational footprint of an organism's evolutionary history, shaped by diverse forces including ecological factors, selective pressures, and life history traits. The sequentially Ma...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 10/06/2025
Happy to have worked on this project with @mashaals.bsky.social , Emilia Huerta-Sanchez and Valeria Añorve-Garibay. We analyzed how stabilizing and directional selection cause problems to predict traits in ancient samples.
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Reposted by Diego Ortega-Del Vecchyo
The American Journal of Human Genetics @ajhgnews.bsky.social · 10/06/2025
📣Online now! 📄Natural selection acting on complex traits hampers the predictive accuracy of polygenic scores in ancient samples 🧑‍🤝‍🧑 @delvecchyo.bsky.social @mashaals.bsky.social & co
cell.com
Natural selection acting on complex traits hampers the predictive accuracy of polygenic scores in ancient samples
Using polygenic scores, we find that two types of natural selection, stabilizing selection and directional selection, can decrease the prediction accuracy of complex traits in ancient individuals. We ...
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Reposted by Diego Ortega-Del Vecchyo
Daniela Robles-Espinoza @daniela-oaks.bsky.social · 12/01/2025
We continue with the #human genetic variation and ancient #genomics session! Our next speaker is @delvecchyo.bsky.social, who is telling us about how to use geographical and temporal information to infer the action of natural #selection @liigh-unam.bsky.social #LIIGH10anniversary
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Reposted by Diego Ortega-Del Vecchyo
Daniela Robles-Espinoza @daniela-oaks.bsky.social · 11/01/2025
The next talk is by PhD student Alan Izarraras from @delvecchyo.bsky.social's group, and he is telling us about how to infer the distribution of fitness effects using local genealogies @liigh-unam.bsky.social #LIIGH10anniversary
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Reposted by Diego Ortega-Del Vecchyo
Paleogenomics - María Ávila Arcos @paleogenomics.bsky.social · 18/11/2024
🚨🪅 Registration is NOW OPEN for our Symposium on Ancient Pathogen Genomics! 🦠🧬 Join us on April 12-13 2025 in Juriquilla, Mexico. Featuring top speakers & great science in a beautiful venue! Plz RT ! liigh.unam.mx/apg/ 🪅🚨
liigh.unam.mx
Ancient Pathogens Genomics International Symposium
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Reposted by Diego Ortega-Del Vecchyo
christiandhuber.bsky.social @christiandhuber.bsky.social · 04/01/2025
genestogenomes.org/digging-up-t...
genestogenomes.org
Digging up the recent past: how effective are genomic tools at deciphering our genetic ancestry?
Researchers evaluate the accuracy of common statistical methods to identify recent genetic ancestry in GENETICS.
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Reposted by Diego Ortega-Del Vecchyo
Ana Ignatieva @anaignatieva.bsky.social · 09/12/2024
New preprint (with @linoafferreira.bsky.social) where we explore the idea of using genealogies (in the form of ancestral recombination graphs, ARGs) to tell apart real GxG interaction signals between nearby variants from false positives www.biorxiv.org/content/10.1...
biorxiv.org
Phantom epistasis through the lens of genealogies
Phantom epistasis arises when, in the course of testing for gene-by-gene interactions, the omission of a causal variant (with a purely additive effect on the phenotype) causes the spurious inference o...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 02/12/2024
Don't forget to submit your abstract for "Probabilistic Modeling in Genomics 2025". Deadline: January 10th, 2025. meetings.cshl.edu/meetings.asp...
meetings.cshl.edu
Probabilistic Modeling in Genomics
Cold Spring Harbor Laboratory Meetings & Courses -- a private, non-profit institution with research programs in cancer, neuroscience, plant biology, genomics, bioinformatics.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 30/09/2024
I have received tenure! I got here thanks to the support from my students, colleagues, mentors and home institution ( @liigh-unam.bsky.social ). I plan to continue doing research on Theoretical Population Genetics and developing methods to understand how Evolution has shaped our past.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 12/09/2024
Our preprint analyzing the impact of stabilizing and directional selection on the prediction of complex traits in ancient samples is out. Work spearheaded by Valeria Añorve-Garibay in collaboration with Mashaal Sohail and Emilia Huerta-Sánchez. Thread below: www.biorxiv.org/content/10.1...
biorxiv.org
Natural selection acting on complex traits hampers the predictive accuracy of polygenic scores in ancient samples
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 12/07/2024
Happy to see @Alanizarr, Sebastián Iturbe and Abad Guzmán from our group presenting their work during the poster session. #SMBE2024
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 11/07/2024
During dinner a lot of people were asking: "Where is the after party?". It is tomorrow at 9am. We have a great set of talks on new approaches to estimate demography and natural selection. Symposium organized with @valenomics #smbe2024
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 10/07/2024
"Community Engagement Experiences of the Afromexico Genomics Project" by @paleogenomics .
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 07/07/2024
Our group will have a strong presence at #SMBE2024 . Two students will be giving talks and another three students will be presenting posters.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 06/07/2024
The abstract book is available online along with the scientific program and the travel guide to #smbe2024 #smbe24 smbe2024.org . Happy to see the community in Puerto Vallarta, Mexico soon.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 31/05/2024
Don't forget to register for #SMBE2024 smbe2024.org today in order to be part of the scientific program if you were accepted to give a poster or oral presentation.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 21/02/2024
We had a strong presence in the "Días Académicos" event held the last couple of days @LIIGH_UNAM . We had poster presentations by Sebastián Iturbe and Abad Guzmán. @AlanIzarr and @PsyduckResearch gave talks.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 02/02/2024
Our perspective piece "The Promise of Inferring the Past Using the Ancestral Recombination Graph (ARG)" is out. Work with Débora YC Brandt, Christian D Huber , Charleston WK Chiang: academic.oup.com/gbe/article/...
academic.oup.com
The Promise of Inferring the Past Using the Ancestral Recombination Graph
Abstract. The ancestral recombination graph (ARG) is a structure that represents the history of coalescent and recombination events connecting a set of sequence
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 02/02/2024
Our perspective piece "The Promise of Inferring the Past Using the Ancestral Recombination Graph (ARG)" is out. Work with @deboraycb, @christiandhuber and @CharlestonCWKC : academic.oup.com/gbe/article/16/2/e…
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 22/11/2023
We, Alan Izarraras Gomez and I, wrote a 'News and Views' on the latest Nakatsuka et al. (2023) paper discovering an ancient migration (around 5,200 years old) from Northwest Mexico to California that likely spread a language family in California: www.nature.com/articles/d41... rdcu.be/drLBe
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 19/09/2023
Congratulations to @valenomics on getting her bachelor's degree in Genomic Sciences after defending her thesis today. She has been leading two projects during her senior year in collaboration with @emiliahsc and @mashaals . It is an honor to work with this rising star.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 29/06/2023
Made a virtual appearance at #SMBEsmallpops to argue that the Ancestral Recombination Graph can be leveraged to make management decisions that preserve our biodiversity. This is work spearheaded by @AlanIzarr and we are currently writing the paper. I'll keep you posted.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 22/06/2023
Some members of the lab and I found Darth Vader. We also enjoyed a "Millenium Falcon" pizza.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 20/06/2023
Happy to have joined the editorial board of @GenomeBiolEvol . Thanks to Laura A Katz and @AdamEyreWalker for this kind invitation! academic.oup.com/gbe/pages/Editoria…
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 15/06/2023
The great @HctorAlessandr will be a PhD student in our group. We are very lucky to have him and look forward to seeing more of his great work.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 16/05/2023
Congratulations to Earth's version of the Hero of Time, @hctoralessandr , for getting his master's degree by developing a new method to infer how natural selection acts using temporal genetic data. @nintendo decided to release the new Zelda game the same day he got his degree.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 25/01/2023
Great to see this commentary highlighting the recent paper led by Ryan Buck and Lluvia Flores-Rentería on the Southwestern pinyon pine syngameon. Syngameons are groups of species that form diverse hybrids. Happy to have contributed to this work:...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 30/11/2022
We had a fantastic seminar from @MaanasaRaghavan @GenSCAPE_Lab on Monday at the @LIIGH_UNAM . Great research involving fair and respectful collaborations with local communities to understand the past human history in South Asia and South-east Asia.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 25/10/2022
I'll be at #ASHG2022 showing @AlanIzarr 's work on inferring the distribution of fitness effects by leveraging the ancestral recombination graph. I'll also be giving seminars at USC, UCLA, Brown and Penn State in the upcoming weeks.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 17/06/2022
We had visitors from @UCBerkeley and @INMEGEN this week. @dianaguilr and @andrewhvaughn gave two fantastic seminars. @dianaguilr talked about her work on identifying the genes that determine the pigmentation patterns of a species of frogs in Central America... (1/N)
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 16/05/2022
Débora Brandt, @christiandhuber , @CharlestonCWKC and I are organizing the global virtual symposia "Using Ancestral Recombination Graphs (ARGs) to Infer Evolutionary Processes" on September 30, 2022. Abstract submission and registration are open!...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 26/04/2022
Congratulations to @AlanIzarr on passing his oral qualifying exam and becoming a PhD candidate. It is an honor to have you in our group. Next month he will do a research stay in @ras_nielsen 's group at Berkeley thanks to the generous support of the UC MEXUS program.
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 07/04/2022
Our paper was highlighted on the April issue of @GeneticsGSA :) academic.oup.com/genetics/issue/220…
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 09/03/2022
We had a great couple of seminars in the last few days @Liigh . Debora Brandt talked about her recent paper evaluating methods that do ARG reconstruction ( www.biorxiv.org/content/10.1101/202… ). @benmpeter discussed his latest work on the past history and...
biorxiv.org
Evaluation of methods for estimating coalescence times us...
The ancestral recombination graph (ARG) is a structure th...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 01/03/2022
Our paper presenting a new methodology that leverages linkage disequilibrium patterns to infer the distribution of fitness effects of standing genetic variants as well as new mutations is up on @GeneticsGSA . Many improvements since the BioRxiv...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 13/01/2022
Happy to share this review written with @mashaals and @AlanIzarr . We discuss how genetic, biogeographical and sociocultural factors act jointly to shape the spatial variation of complex traits. doi.org/10.1093/gbe/evab272 (1/9).
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 29/11/2021
Today we had a great virtual seminar at the @LIIGH_UNAM by @christiandhuber on how admixture complicates the detection of past hard sweeps in humans. Part of this work can be found on Christian's latest updated preprint: www.biorxiv.org/content/10.1101/202…
biorxiv.org
Admixture has obscured signals of historical hard sweeps ...
The role of natural selection in shaping biological diver...
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 12/11/2021
This is an amazing review by Evan M. Koch and Shamil R. Sunyaev that analyses how natural selection shapes patterns of genetic and phenotypic variation....
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 30/09/2021
I admire the courage of the four women scientists that denounce how one PI at a major research institution in Mexico, @Langebio, sexually harassed them. (1/2) www.science.org/content/article/wom…
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Diego Ortega-Del Vecchyo @delvecchyo.bsky.social · 01/06/2021
We had the honor of hosting a virtual seminar by @Johri_Parul in the @LIIGH_UNAM . Super cool work on new methods to perform joint inference of demography and the impact of purifying selection. Thank you for sharing your work with us!
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