Ron Alfa
3.2K posts

Ron Alfa
@Ronalfa
CEO/Co-founder, @NOETIK_AI Decoding Cancer | Ex-@RecursionPharma $RXRX | @StanfordMed MD-PhD | @PDSoros | Build the Future


One of the things I like about World Models is that by learning causality instead of language, they can help humans do things that we can't currently do instead of trying to replace the things we can. They get closer to the true nature of reality (or the simulation).



I'm joining an @NVIDIAHealth panel at #GTC2026 this March! @nvidia The topic is one I think about every single day. "Why bigger models alone aren't enough for biology — and how to design AI that truly understands living systems." Scale matters enormously. But what you scale is just as important as how much you scale. From scGPT — one of the first foundation models for single-cell biology — to BioReason, pushing the frontier of biological reasoning — to recently joining @Xaira_Thera to help build the Virtual Cell from the ground up. Every step has sharpened the same conviction: the architecture of the data matters as much as the architecture of the model. I'm looking forward to discussing this live with an incredible group: @Prof_Lundberg @Ronalfa, Phil Lorenz, and @DBBurkhardt If you're at GTC this March — come find us. --Wednesday, March 18 | 10:00–10:40 AM -- Register: nvda.ws/4u9KUue #GTC2026 #AI #Biology #VirtualCell #FoundationModels #Xaira



F Cancer Why has AI had so little impact on Cancer? New essay, link below.


Today we’re announcing X-Cell — Xaira’s first step toward a virtual cell. 🧬 A foundation model that predicts how gene expression changes under causal perturbations — across cell types, conditions, and even unseen biology. This is not trained on observational atlases. It is trained on interventions. 🧵👇


At 3,500+ Blackwell chips, Roche is building the "largest announced hybrid-cloud AI factory" in biopharma with Nvidia: endpoints.news/roche-nvidia-t…



We’ve trained a multimodal AI model to turn routine pathology slides into spatial proteomics, with the potential to reduce time and cost while expanding access to cancer care.




