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Posts by Harold Pimentel

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Excited to share this preprint that describes my latest work on using GPUs to accelerate processing of RNA-seq data.

The title says it all: "RNA-seq analysis in seconds using GPUs" now on biorxiv www.biorxiv.org/content/10.6... and github github.com/pachterlab/k...

Figure 1 shows they key result

1 month ago 187 87 6 8
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Inclusion bias affects common variant discovery and replication in a health-system linked biobank We quantify inclusion bias in a health-system-linked biobank using classification models to distinguish enrolled individuals from the background population. To evaluate its impact on genetic findings ...

🧬New today!
📄Inclusion bias affects common variant discovery and replication in a health-system linked biobank
🧑‍🤝‍🧑 @loldeloo.bsky.social @apimplaskar.bsky.social @bpasaniuc.bsky.social & colleagues

1 month ago 9 6 0 0

Happy to see this work out now in Genome Biology! Check out the final version here for your FACS DMS needs: link.springer.com/article/10.1...

1 month ago 13 6 0 1

Great work by Albert from my lab! Albert has a few more papers coming shortly and will be graduating soon. Then off to a PD! He is a great PD catch and you should consider him :) bsky.app/profile/albe...

1 month ago 18 3 0 0

My preprint on keju, a statistical tool for Massively Parallel Reporter Assay (MPRA) data, is out! keju improves sensitivity, calibration, and reliability over previous methods by closely modeling important uncertainty sources in MPRAs. Check it out: www.biorxiv.org/content/10.6... (1/n)

1 month ago 29 8 1 1

"Vegan protein options: mushrooms"

4 months ago 1 0 0 0
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god, this is so bad it's kind of funny

5 months ago 4 0 0 0
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Destroying the earth to make shit memes with GPT:

(the idea was not mine, fortunately)

5 months ago 18 1 1 0
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@jbenning.bsky.social @jedidiahcarlson.com
et al. exemplify how confounding can lead to flawed inference on genetic causality. In studies of human behavior and social outcomes, the cost of downplaying this problem can be steep. royalsocietypublishing.org/doi/epdf/10.... bsky.app/profile/jben...

5 months ago 5 3 0 0

You win some, you lose some. WELP

5 months ago 2 0 0 0

One can hope

5 months ago 2 0 0 0
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I'm so tired.

5 months ago 65 4 9 3
Illustration of Burrows-Wheeler Transform and many auxiliary structures from the input string how$now$brown$cow$#

Illustration of Burrows-Wheeler Transform and many auxiliary structures from the input string how$now$brown$cow$#

New tool "bwt-svg" for making illustrations of the BWT and the many auxiliary arrays and other structures related to it. Pyodide-based no-installation-necessary interface here: benlangmead.github.io/bwt-svg/. (H/t to @robert.bio for pointing me to pyodide!) Full repo: github.com/benlangmead/....

6 months ago 40 21 4 1

The proteasome-substrate-shuttle protein UBQLN2 contains—like other quality control system proteins—a long region devoid of lysine (a lysine desert)

Martin Grønbæk-Thygesen (from @rhp-lab.bsky.social) et al show that introducing K here causes ubiquitylation and degradation

doi.org/10.1101/2025...

6 months ago 32 11 2 1

🤣

6 months ago 0 0 0 0

yikes... sorry...

my only advice is to proactively carry a 5lb bag of rice with your laptop

6 months ago 1 0 1 0

The first (of hopefully many) reports to come from our collaboration with @hjp.bsky.social

We present a new type of cell fitness assay that allows you to both quantify and explain differences across human donors in cell proliferation and sensitivity to environmental toxicants.

6 months ago 17 7 1 0
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Thanks!

6 months ago 0 0 0 0

Thank you!

6 months ago 1 0 0 0

Huge congrats to my student Chloe who led the computational side, and Mike's student Tim who led the experimental side. Both worked diligently on the analysis. And of course, many congrats to my collaborator and friend @mfwells.bsky.social and his lab who did all the experimental work

6 months ago 8 0 0 0

Stay tuned -- much more in queue

6 months ago 4 0 2 0

3. we apply these experimental and computational advances along with 'GWAS in a dish' approaches to find genetic variants associated with NPC proliferation. further, we find genetic variants associated with response to lead in NPCs

6 months ago 5 0 1 0

2. develop computational models that model the nuance in cell villages, including the compositional nature, small sample sizes, and structure of the variance

6 months ago 2 0 1 0

Super excited to get this out. This collab started a few years ago and is the first paper from it. Here, with experimental and computational approaches we:

1. establish that cell villages can be just as accurate (one might argue more accurate!) than arrayed-based designs

bsky.app/profile/bior...

6 months ago 40 21 2 0

😭

6 months ago 0 0 0 0
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Color me surprised that the same people who don't believe solid epi over decades (like those guiding nutritional guidelines) believe this. Unreal.

6 months ago 2 0 1 0
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Harvard Dean Was Paid $150,000 as an Expert Witness in Tylenol Lawsuits

Radical transparency

🎁
www.nytimes.com/2025/09/23/h...

6 months ago 32 11 1 1

Super excited to have this out. Thanks very much to the reviewers who helped improve this manuscript. Congrats to @jingyour.bsky.social!

bsky.app/profile/bioi...

6 months ago 20 5 1 0

Pretty sure that’s the point bsky.app/profile/josh...

7 months ago 2 2 1 0
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IN THE UNITED STATES DISTRICT COURT
FOR THE NORTHERN DISTRICT OF CALIFORNIA
GAVIN NEWSOM, et al.,
Plaintiffs,
Case No. 25-cv-04870-CRB
OPINION GRANTING INJUNCTIVE RELIEF
V.
DONALD J. TRUMP, et al.,
Defendants.
Congress spoke clearly in 1878 when it passed the Posse Comitatus Act, prohibiting the use of the U.S. military to execute domestic law. Nearly 140 years later, Defendants President Trump, Secretary of Defense Hegseth, and the Department of Defense deployed the National Guard and Marines to Los Angeles, ostensibly to quell a rebellion and ensure that federal immigration law was enforced. There were indeed protests in Los Angeles, and some individuals engaged in violence. Yet there was no rebellion, nor was civilian law enforcement unable to respond to the protests and enforce the law.
Nevertheless, at Defendants' orders and contrary to Congress's explicit instruction,
federal troops executed the laws. The evidence at trial established that Defendants systematically used armed soldiers (whose identity was often obscured by protective armor) and military vehicles to set up protective perimeters and traffic blockades, engage in crowd control, and otherwise demonstrate a military presence in and around Los Angeles. In short, Defendants violated the Posse Comitatus Act.

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF CALIFORNIA GAVIN NEWSOM, et al., Plaintiffs, Case No. 25-cv-04870-CRB OPINION GRANTING INJUNCTIVE RELIEF V. DONALD J. TRUMP, et al., Defendants. Congress spoke clearly in 1878 when it passed the Posse Comitatus Act, prohibiting the use of the U.S. military to execute domestic law. Nearly 140 years later, Defendants President Trump, Secretary of Defense Hegseth, and the Department of Defense deployed the National Guard and Marines to Los Angeles, ostensibly to quell a rebellion and ensure that federal immigration law was enforced. There were indeed protests in Los Angeles, and some individuals engaged in violence. Yet there was no rebellion, nor was civilian law enforcement unable to respond to the protests and enforce the law. Nevertheless, at Defendants' orders and contrary to Congress's explicit instruction, federal troops executed the laws. The evidence at trial established that Defendants systematically used armed soldiers (whose identity was often obscured by protective armor) and military vehicles to set up protective perimeters and traffic blockades, engage in crowd control, and otherwise demonstrate a military presence in and around Los Angeles. In short, Defendants violated the Posse Comitatus Act.

BREAKING: Trump, Hegseth violated the Posse Comitatus Act with their troop deployment to Los Angeles, Judge Charles Breyer rules after trial. storage.courtlistener.com/recap/gov.us...

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