{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2025-10-15-c2s-scale-gemma-cancer-hypothesis/","md":"https://postcutoff.com/e/2025-10-15-c2s-scale-gemma-cancer-hypothesis/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2025-10-15-c2s-scale-gemma-cancer-hypothesis","date":"2025-10-15","date_precision":"day","short_title":"Google's C2S-Scale 27B model generates a new cancer-immunotherapy hypothesis confirmed in living cells","deck":null,"takeaway":"C2S-Scale 27B, a Gemma-based single-cell model, simulated over 4,000 drugs in two immune contexts.","category":"science","category_label":"Science & math","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Result confirmed"]},"sources":[{"n":1,"title":"Google: How a Gemma model helped discover a new potential cancer therapy pathway","url":"https://blog.google/technology/ai/google-gemma-ai-cancer-therapy-discovery/","type":"official","group":"primary","domain":"blog.google"},{"n":2,"title":"DDW: Google AI model reveals new way to improve immunotherapy","url":"https://www.ddw-online.com/google-ai-model-reveals-new-way-to-improve-immunotherapy-38114-202510/","type":"press","group":"press","domain":"ddw-online.com"}],"official":1,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Google Research","Google DeepMind","Yale University"],"title":"Google's C2S-Scale 27B model generates a new cancer-immunotherapy hypothesis confirmed in living cells","summary":"C2S-Scale 27B, a Gemma-based single-cell model, simulated over 4,000 drugs in two immune contexts. It predicted that the CK2 inhibitor silmitasertib boosts tumour antigen presentation only with low-dose interferon present. In living cells the combination raised MHC-I antigen presentation by ~50%. The link had not been reported before.","key_facts":["Virtual screen of >4,000 drugs in 'immune-context-positive' vs '-neutral' settings","Silmitasertib (CX-4945) + low-dose interferon: ~50% increase in antigen presentation in vitro","In vitro only; no animal or clinical data; preprint"],"key_numbers":[],"tags":["biology","cancer","single-cell","gemma","immunotherapy"],"science":{"field":"medicine","subfield":"cancer immunology","problem":"Making 'cold' tumours visible to the immune system","result":"Novel, context-dependent drug synergy predicted by an LLM-style single-cell model and confirmed in cell experiments.","open_since":"","ai_system":["C2S-Scale 27B (Gemma)"],"human_role":"AI-generated hypothesis; human lab validation","verification":{"key":"preprint","label":"Preprint only","text":"Lab-validated in vitro; preprint"},"status":"confirmed","shock":""},"body_md":"## What happened\n\nResearchers asked the model which drugs would amplify immune signals only in an immune-active context. Its top novel prediction held up in lab tests.\n\n## Why it matters\n\nIt is evidence that scaling biological foundation models can yield testable, novel hypotheses, though only in vitro so far.","disputed":[],"related":[{"id":"2025-02-19-google-ai-co-scientist","url":"https://postcutoff.com/e/2025-02-19-google-ai-co-scientist/","date":"2025-02-19","date_precision":"day","short_title":"Google's AI co-scientist independently reproduces an unpublished superbug discovery in 48 hours","deck":null,"takeaway":"It was the most-cited early example of an LLM system generating a correct, non-obvious scientific hypothesis.","category":"science","category_label":"Science & math","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Result confirmed"]},"sources":5,"official":4,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Google","Google DeepMind","Imperial College London","Stanford University"]}],"people":[],"posts":[],"videos":[],"models":[],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":null,"in_training_data":true},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":null,"in_training_data":true},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":null,"in_training_data":true},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":null,"in_training_data":true}],"short_url":null}