Harold Pimentel's Avatar

Harold Pimentel

@hjp

Assistant prof at UCLA using the Bayes for the genomes https://pimentellab.com

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Latest posts by Harold Pimentel @hjp

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...

04.03.2026 16:42 πŸ‘ 18 πŸ” 3 πŸ’¬ 0 πŸ“Œ 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)

02.03.2026 18:59 πŸ‘ 24 πŸ” 6 πŸ’¬ 1 πŸ“Œ 1

"Vegan protein options: mushrooms"

22.11.2025 02:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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god, this is so bad it's kind of funny

18.11.2025 04:01 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Destroying the earth to make shit memes with GPT:

(the idea was not mine, fortunately)

18.11.2025 03:48 πŸ‘ 18 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

@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...

07.11.2025 20:07 πŸ‘ 5 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

You win some, you lose some. WELP

22.10.2025 20:57 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

One can hope

22.10.2025 18:24 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I'm so tired.

22.10.2025 17:21 πŸ‘ 65 πŸ” 4 πŸ’¬ 9 πŸ“Œ 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/....

14.10.2025 20:48 πŸ‘ 40 πŸ” 21 πŸ’¬ 4 πŸ“Œ 1

The proteasome-substrate-shuttle protein UBQLN2 containsβ€”like other quality control system proteinsβ€”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...

07.10.2025 21:19 πŸ‘ 32 πŸ” 11 πŸ’¬ 2 πŸ“Œ 1

🀣

01.10.2025 01:52 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

yikes... sorry...

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

01.10.2025 01:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 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.

30.09.2025 19:17 πŸ‘ 17 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0

Thanks!

29.09.2025 16:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thank you!

29.09.2025 16:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 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

29.09.2025 16:54 πŸ‘ 8 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Stay tuned -- much more in queue

29.09.2025 16:47 πŸ‘ 4 πŸ” 0 πŸ’¬ 2 πŸ“Œ 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

29.09.2025 16:47 πŸ‘ 5 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

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

29.09.2025 16:47 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 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...

29.09.2025 16:47 πŸ‘ 40 πŸ” 21 πŸ’¬ 2 πŸ“Œ 0

😭

24.09.2025 02:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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

24.09.2025 02:25 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Harvard Dean Was Paid $150,000 as an Expert Witness in Tylenol Lawsuits

Radical transparency

🎁
www.nytimes.com/2025/09/23/h...

24.09.2025 01:29 πŸ‘ 32 πŸ” 11 πŸ’¬ 1 πŸ“Œ 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...

22.09.2025 17:35 πŸ‘ 20 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0

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

15.09.2025 18:26 πŸ‘ 2 πŸ” 2 πŸ’¬ 1 πŸ“Œ 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...

02.09.2025 13:50 πŸ‘ 2851 πŸ” 756 πŸ’¬ 35 πŸ“Œ 69
THE HILL
HEALTH CARE
RFK Jr. says agency will reveal causes of autism in September
BY JOSEPH CHOI - 08/26/25 4:01 PM ET

THE HILL HEALTH CARE RFK Jr. says agency will reveal causes of autism in September BY JOSEPH CHOI - 08/26/25 4:01 PM ET

You’re not dropping a single, asshole.

If you’re actually knew anything, it would be criminal not to reveal it now. But of course, this is a bullshit publicity stunt.

27.08.2025 02:41 πŸ‘ 6960 πŸ” 1249 πŸ’¬ 345 πŸ“Œ 150
Preview
JXTX + CSHL 2025 Genome Informatics Scholarship JXTX + CSHL 2025 Genome Informatics Scholarships

From @jxtxfoundation.bsky.social | JXTX + CSHL 2025 Genome Informatics Scholarships | Up to $750 for domestic or $1,250 for international travel | Application deadline is September 15, 2025 | #OpenScience 🧬 πŸ–₯️ πŸ§ͺ
⬇️
jxtxfoundation.org/news/2025-6-...

26.08.2025 14:13 πŸ‘ 5 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0