“The impoverished laboratory environment in which mice and rats are maintained has been very good at increasing experimental replicability,” Steven Austad told the audience at the 12th Aging Research & Drug Discovery Meeting (ARDD) in Copenhagen last week. “But at the cost of sacrificing translational relevance.”

At the 12th Aging Research & Drug Discovery (ARDD) Meeting, which is being held this week in Copenhagen, Life Biosciences Inc. announced that it is developing its partial epigenetic reprogramming technology for liver disease as well as optic neuropathies. The company’s chief scientific officer Sharon Rosenzweig-Lipson estimated that its ER-100 would enter clinical trials in early 2026, putting it on track to be the first application of partial epigenetic reprogramming to enter the clinic.

Subtyping is what made precision medicine in cancer a reality. And for successful drug discovery in all its stages, finding subtypes in Alzheimer’s disease is all but imperative. Prior to the approval of the modestly effective Leqembi (lecanemab, Biogen Inc./Eisai Co. Ltd.), Kisunla (donanemab, Eli Lilly and Co.), and the since-withdrawn Aduhelm (aducanumab, Biogen Inc./Eisai Co. Ltd.), more than a dozen failed phase III clinical trials were all that amyloid-targeting drugs had to show for themselves for decades of effort.

A month away from the PDUFA decision date for a Leqembi (lecanemab) subcutaneous autoinjector to be used for maintenance dosing for those with early Alzheimer’s disease, Eisai Co. Ltd. and Biogen Inc. presented clinical data at the Alzheimer's Association International Conference (AAIC) 2025 in Toronto, showing comparable efficacy and safety to the FDA-approved intravenous formulation.

At the 2025 Alzheimer’s Association International Conference (AAIC), one of the bigger splashes was made by a cardiovascular drug. In a presentation on July 30, Newamsterdam Pharma Co. NV presented data showing that its cholesterol drug obicetrapib lowered levels of the Alzheimer’s Disease biomarker p-tau217.

We all look different to HIV, a virus that destroys the immune system. The defensive cells record every interaction with foreign agents, infections from viruses and bacteria, but also with mechanisms occurring within the body, such as microbiome metabolism, the effects of aging, or the development of diseases. At a preconference session at the 13th IAS Conference on HIV Science (IAS 2025), scientists explained the interactions of different microorganisms with HIV.

There is still no effective vaccine or cure for HIV. Scientists are considering options ranging from longer-term antiretroviral therapy (ART) that space out injections by several years to long-lasting pre-exposure prophylaxis (PrEP) that acts as a vaccine while immunization is achieved. What else can be done?

While people living with HIV can lead virtually normal lives thanks to antiretroviral therapy (ART), HIV persists in a latent state within cellular reservoirs that scientists do not know how to eliminate. “Transcription is a critical step in the viral life cycle. … But there are currently no drugs suppressing HIV transcription, and that may be one of the reasons why current antiretroviral therapy is not curative,” Melanie Ott told the audience at the 13th IAS Conference on HIV Science this week in Kigali, Rwanda.

“Loss of synapses and dysfunctional synapses in a region-specific way is important in Alzheimer’s. It’s actually the strongest correlate of cognitive decline, far more so than plaques and tangles, which are the pathological hallmarks,” Soyon Hong told the audience at the XVII Meeting on Glial Cells in Health and Disease, which was held in Marseille last week.

At first blush, the brain’s extracellular matrix (ECM) seems like the opposite of synaptic plasticity. Plasticity is the ability to change; the ECM is stable, to the point that it is often described as a scaffold – something to lend stability. “ECM proteins have some of the longest lifetimes of any protein in the brain,” Anna Molofsky told her audience at the XVII Meeting on Glial Cells in Health and Disease, which is being held in Marseille this week.