# THERYQ

Source: https://onco.cc/companies/theryq/  
OnCo record `theryq` (Company). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

THERYQ, part of the French industrial group ALCEN, builds linear accelerators for FLASH radiotherapy, which delivers a whole radiation dose in under 100 milliseconds; its FLASHDEEP produces 100 to 200 MeV electron beams that reach tumours about 20 cm deep. It is still preclinical, with a 38 million euro France 2030 programme to reach a CE mark.

## Summary

THERYQ, part of ALCEN For Health (the healthcare branch of French industrial group ALCEN), designs and manufactures linac-based devices to bring FLASH radiotherapy into the clinic. It was formed when AVELION, which had led FLASH projects since 2013, transferred its radiotherapy business to THERYQ in 2022. FLASHKNiFE is a lower-energy electron research device; the flagship FLASHDEEP is a compact linac producing very high energy electron beams of 100 to 200 MeV, able to reach tumours about 20 cm deep while delivering ultra-high dose rates in under 100 milliseconds. The company describes itself as at the preclinical research stage. With Gustave Roussy it was selected under France 2030's i-Demo call for the FLASHDEEP project, a EUR 38 million budget funded through Bpifrance, to run preclinical and clinical studies and prepare a CE marking application while building an industrial platform in Rousset.

## Fields

- Kind: Company
- Last checked: 2026-09-10
- HQ: Paris
- Type: devices
- Website: https://www.theryq-alcen.com/

## Notes

- theryq.tech does not resolve; the live site is theryq-alcen.com. THERYQ is a subsidiary of the ALCEN group, so 'private-large' signals corporate ownership rather than venture backing; no equity rounds were found. Founded set to 2022 (transfer of the AVELION radiotherapy branch). The France 2030 / Bpifrance FLASHDEEP grant (EUR 38 million project budget shared with Gustave Roussy) is stated on the product page but without a date or THERYQ's own share, so it is described in the summary rather than recorded as a funding round.

## Sources

- Official website: https://www.theryq-alcen.com/
- About THERYQ: https://www.theryq-alcen.com/about-theryq/
- FLASHDEEP product and France 2030 funding: https://www.theryq-alcen.com/flash-radiotherapy-products/flashdeep/

## Connected records

- fronts: [Devices & Physical Therapies](https://onco.cc/fronts/devices/), [Radiation Therapy](https://onco.cc/fronts/radiation/)
- technologies: [FLASH radiotherapy](https://onco.cc/technologies/flash-rt/)
- companies: [Bpifrance](https://onco.cc/companies/bpifrance/)
- roadmaps: [Radiotherapy roadmap: X-rays → shaped beams → fewer fractions, particles and FLASH](https://onco.cc/roadmaps/radiation-roadmap/)

---
JSON: https://onco.cc/api/v1/entities/theryq.json