A best-effort open-web census, not a complete registry: 16 verification rows across 14 independent official and primary pages, checked as of 2 November 2026, covering 9 French or France-linked data/AI challenges. Of these, one matches exactly, two match with caveats, and five are excluded or adjacent.
France-BioImaging (with CNRS partners) — Research infrastructure / institute
Sources: france-bioimaging.org · lightmycells.grand-challenge.org
CREATIS UMR 5220 / CNRS / Inserm, with French university hospitals — Research institute
Sources: arxiv.org · creatis.insa-lyon.fr
CHU de Toulouse via Toulouse Santé Numérique, with La Mêlée, Clinique Pasteur, ASEI — University hospital consortium
Sources: lamelee.com
Light My Cells 2 is doubly sourced: dates and signup come from the France-BioImaging announcement, eligibility from the Grand Challenge rules page — any individual or team with a verified account may enter. france-bioimaging.org · lightmycells.grand-challenge.org
MYOSAIQ has no closing date at all: the 2026 paper states the CodaLab platform “remains open for new participants and submissions” — but no page spells out an explicit anyone-may-enter clause. arxiv.org · creatis.insa-lyon.fr
The Toulouse hackathon is the broadest door but the thinnest data claim: it welcomes “anyone wishing to contribute”, yet its public page names no participant medical dataset. lamelee.com
The nearest miss is timing, not eligibility: the EEG/EMG Foundation Challenge says anyone can enter, but registration closed 24 Oct 2026 and no submissions are accepted 2–4 Nov. neural-interfaces26.github.io
| Challenge | Organizer | Why excluded or adjacent | Sources |
|---|---|---|---|
| EEG/EMG Foundation Challenge 2026 | Inria, Yneuro, UC San Diego | “Anyone can enter” and final deadline is 21 Nov 2026, but registration closed 24 Oct and no submissions are accepted 2–4 Nov — cannot be newly entered today | neural-interfaces26.github.io · neural-interfaces26.github.io |
| ANNITIA Data Challenge 2026 | IHU ICAN | Closed — submission deadline was 17 May 2026; MASLD risk-stratification on synthetic patient data | annitia.trustii.io |
| Hackathon IA – Agent LLM et MCP | IFB/ELIXIR-FR and PRABI-AMSB | Pre-registration required by 29 Sep 2026 and audience limited to the IFB/ELIXIR-FR research network | ifb-elixir.fr · aihackclub.com |
| Datathon SFAR – Interhop | SFAR (professional medical society) with InterHop | Adjacent: broadly open (members and non-members), real medical data (MIMIC-III in OMOP + SFAR recommendations), 26–27 Nov 2026 — but SFAR is a professional society, not one of the requested organizer types | sfar.org · interhop.org · datathon.sfar.org |
| Health Data Hub data challenges | Health Data Hub | Listing page shows upcoming challenges only — nothing enrollable on 2 Nov 2026 | health-data-hub.fr |
Method: best-effort open-web census as of 2 Nov 2026 — five broad web-search passes (~7,900 pre-dedup, heavily overlapping results) plus direct official-page checks; 9 organizer/status verification rows and 7 participation/rules checks across 14 independent hosts. “Can enroll today” means public registration demonstrably open on 2 Nov 2026; eligibility quotes come from official rules pages. There is no finite registry of French medical-data competitions, so completeness cannot be guaranteed. Raw evidence excerpts were cut for space.