Parkinson’s disease (PD) is a neurodegenerative disorder that affects movement, and tremor is one of its signatures. But it is a much more wide-ranging disorder, and patients experience problems with cognitive and emotional processes as well. SCAN, the somato-cognitive action network identified in 2023, could reshape the definition of PD. Treating this circuit can improve outcomes.

Genentech Inc. is paying $200 million up front and up to $1.5 billion in milestone payments to license one of Suzhou Sanegene Bio Inc.’s RNAi programs. Metabolic and autoimmune-focused Sanegene did not disclose specifics around the licensed candidate, except that it was derived from its LEAD (Ligand and Enhancer Assisted Delivery) platform.

How much have AI applications learned, and how can one know their capabilities if they are being evaluated with an exam that is far too easy? In 2024, with the publication of the previous benchmark to measure AI performance, the field debated whether existing assessments would keep pace with the rapid progress of AI.

Google Deepmind is shedding light on the dark genome with its latest AI model, which is trained to decipher the 98% of DNA that does not code for proteins. Alphagenome is designed to predict how variants in the regulatory genome exert their effects on the expression of the genes they control.

Liver fibrosis in the course of metabolic dysfunction-associated steatohepatitis (MASH) could be significantly reduced using CAR T-cells generated in vivo. Scientists at the Icahn School of Medicine at Mount Sinai have developed an experimental cell therapy that eliminates only one type of liver cell, the stellate cells that express fibroblast activation protein alpha (FAP). This strategy not only reduced fibrosis but also reversed liver damage.

A new method, based on gene editing with oligonucleotides and functional analyses, identifies which variants of DNA repair genes associated with Lynch syndrome are truly harmful and which are not. Scientists at The Netherlands Cancer Institute have developed this technique and classified these gene variants in both coding and noncoding regions, distinguishing those that are pathogenic from those that are benign.

Depending on who you ask, AI will take over the world and save it; or ruin it. Certainly, it is changing it. Science magazine dedicated its first editorial of 2026 to AI. Despite its title – “Resisting AI slop“ – editor-in-chief Holden Thorp gave the sort of nuanced review that is typical of him. “Like many tools, AI will allow the scientific community to do more if it picks the right ways to use it,” he wrote. “The community needs to be careful and not be swept up by the hype surrounding every AI product.”

The concept of the 3 Rs – reducing, refining and replacing animal research – has been championed since the 1950s, when William Russel and Rex Burch argued in their book “The Principles of Humane Experimental Technique” that the 3 Rs could simultaneously improve the treatment of research animals and advance the quality of scientific and medical research and testing. Current standard practices of animal research undeniably cause animal suffering at the same time that they have prioritized replicability over translatability.

December 2025 was a big month for announcements from Psithera Inc. The Watertown, Mass.-based newco announced its name change from Psivant Therapeutics, having come out from under the Roivant Sciences Ltd. umbrella – thus the dropping of the “-vant” name. The company also announced a $47.5 million series A financing and disclosed that Eric Shaff had started as the company’s new president and CEO.