Posts Tagged ‘lof’

Scientists discover we don’t need all of out 20,000 genes to survive

October 10, 2015

“We have around 24,000 genes that make us uniquely human and, until now, it was thought that if any were missing it could cause serious problems.

But new research has found that around 200 of these genes may in fact be completely redundant, without posing any such risk.

By studying the genomes of 2,500 people, researchers have said they were surprised to see around one per cent of these genes were missing entirely in some participants.

More importantly, these particular people had no significant health defects that would be explained by the missing genes.

lof paper in Nat Gen

August 28, 2015

Analysis of #LOF variants & 20 risk factor phenotypes in 8.6K individuals identifies loci [both well known & new]


Analysis of loss-of-function variants and 20 risk factor phenotypes in 8,554 individuals identifies loci influencing chronic disease

Alexander H Li,
Alanna C Morrison,
Christie Kovar,
L Adrienne Cupples,
Jennifer A Brody,
Linda M Polfus,
Bing Yu,
Ginger Metcalf,
Donna Muzny,
Narayanan Veeraraghavan,
Xiaoming Liu,
Thomas Lumley,
Thomas H Mosley,
Richard A Gibbs
& Eric Boerwinkle

“The Race” to Clone BRCA1

April 25, 2015

The Race to Clone #BRCA1
Lessons on #LOF mutations, synthetic lethality, silly gene names & the 2-hit hypothesis

synthetic lethality (PARP inhibitors), gene names (RING fingers)

Cholesterol-Lowering PCSK9 Inhibitors Near Market Entry | March 30, 2015 Issue – Vol. 93 Issue 13 | Chemical & Engineering News

April 11, 2015

#PCSK9 Inhibitors Near Market Entry Suggested by natural #LOF lowering LDL via promoting recycling of its receptor

Identification of a large set of rare complete human knockouts : Nature Genetics : Nature Publishing Group

April 3, 2015

A large set [1171] of rare complete human knockouts ~8% Icelanders have one; from a larger set of ~5K genes w/ #LOFs


In Iceland’s DNA, New Clues to Disease-Causing Genes –

by Carl Zimmer
The Decode researchers looked for human knockouts in Iceland — and found a lot of them. Nearly 8 percent of Icelanders lack a working version of a gene. All told, the Decode team identified 1,171 genes shut down in Icelandic knockouts.
In a 2012 study, Dr. MacArthur and his colleagues were able to identify just 253 genes knocked out in humans.

Genotype to phenotype relationships in autism spectrum disorders : Nature Neuroscience : Nature Publishing Group

February 26, 2015

Genotype to phenotype relationships in ASD Expression differences in #brain development for LOF-containing, M v F, &c

Also, netbag finds subnets assoc w autism

No evidence that selection has been less effective at removing deleterious mutations in Europeans than in Africans : Nature Genetics : Nature Publishing Group

January 18, 2015

Removing deleterious mutations in Europeans [v] Africans Comparing nonsynonymous freq. betw. populations HT @obahcall

Geneticists tap human knockouts

November 1, 2014

Sequenced genomes reveal mutations that disable single genes and can point to new drugs.

Ewen Callaway

28 October 2014 Corrected:
29 October 2014

You should also read the Corrections to this article


The poster child for human-knockout efforts is a new class of drugs that block a gene known as PCSK9 (see Nature 496, 152–155; 2013). The gene was discovered in French families with extremely high cholesterol levels in the early 2000s. But researchers soon found that people with rare mutations that inactivate one copy ofPCSK9 have low cholesterol and rarely develop heart disease. The first PCSK9-blocking drugs should hit pharmacies next year, with manufacturers jostling for a share of a market that could reach US$25 billion in five years.

“I think there are hundreds more stories like PCSK9 out there, maybe even thousands,” in which a drug can mimic an advantageous
loss-of-function mutation, says Eric Topol, director of the Scripps Translational Science Institute in La Jolla, California. Mark Gerstein, a bio­informatician at Yale University in New Haven, Connecticut, predicts that human knockouts will be especially useful for identifying drugs that treat diseases of ageing. “You could imagine there’s a gene that is beneficial to you as a 25-year-old, but the thing is not doing a good job for you when you’re 75.”


PLOS Computational Biology: Analysis of Stop-Gain and Frameshift Variants in Human Innate Immunity Genes

October 24, 2014

Methods for Detecting Associations with Rare Variants for Common Diseases: Application to Analysis of Sequence Data

October 24, 2014 #ASHG14