It is acknowledged that the huge bias toward individuals of European ancestry means studies of the contribution of genetics to disease may not translate well to other ethnicities. That point is underlined in the first large-scale investigation of the population structure and demographic history of British Pakistanis, which shows an increased number and length of regions of homozygosity inherited from a common ancestor, and greatly elevated identity by descent, compared to the population at large.

LONDON – A suite of papers rushed through peer review and published in Nature late on Dec. 23, 2021 contain data indicating approved monoclonal antibody drugs designed to neutralize SARS-COV-2 have substantially weaker activity against the Omicron variant.

Attempts to modernize the conceptual framework of brain function and dysfunction are one prerequisite for brain disorders to benefit from precision medicine. For the circuit-based insights that are slowly emerging to benefit patients, though, better targeting methods are needed.

Brain disorders have not yet profited from advances in precision medicine to the same extent that other disorders have. With the advent of magnetic resonance imaging and other technologies, watching the brain at work has made great strides in recent decades. But those data have often been shoehorned into the categories of the Diagnostic and Statistical Manual of Mental Disorders. Researchers are working to bring diagnostic categories in line with a modern understanding the brain.

Clonal hematopoiesis of indeterminate potential (CHIP) was associated with a 35% reduced risk of Alzheimer's disease (AD) in studies presented at the plenary session of the American Society of Hematology (ASH) annual meeting on Sunday.

Far from the Groundhog Day spectacle of amyloid-targeting antibodies that do little to nothing for patients in trial after trial, researchers have reported success in reducing the risk of Alzheimer’s disease (AD) in unexpected ways. Researchers at the Cleveland Clinic Foundation have discovered that a Viagra prescription was associated with a roughly 70% reduced risk of being diagnosed with AD. And investigators from the University of Washington reported that in the prospective Adult Changes in Thought study, a long-term study into risk and protective factors for dementia, persons who underwent cataract surgery reduced their risk of AD by 30%, an effect that lasted for 10 years after surgery.

In the December 3, 2021, issue of Science, researchers reported that a missense variant that is highly enriched in the Amish population was associated with reduced levels of both LDL cholesterol and fibrinogen. To date, very few variants have been identified that affect more than one risk factor for cardiovascular disease.

Stimulating the innate immune system with defective viral genomes (DVG)-based strategy provided broad-spectrum protection against RNA viral infections, including SARS-CoV-2 and other respiratory diseases in animal models, according to a U.S.-led international collaborative study reported in the Nov. 17, 2021, edition of Cell.

“I was not always someone who would have advertised probiotics,” Michael Otto told BioWorld. And it’s easy to see why. At this point, probiotics are more often dubious wellness offerings than evidence-based therapeutics. Part of the issue is that the mechanisms by which probiotics are supposed to exert their effects are mostly vague. Molecular mechanisms that could account for claimed health benefits are few and far between. But Otto, who is chief of the pathogen molecular genetics section at the National Institutes of Allergy and Infectious Disease, and his colleagues have identified one such molecular mechanism.

Immune system B cells secrete the neurotransmitter gamma amino-butyric acid (GABA), which promotes generation of anti-inflammatory macrophages and blunts the cytotoxic T cell-based response to tumors in mice.