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Breaking resistance barrier

profilePhoto   Laurène El Bahhaj
Linksium Contact Laurène El Bahhaj +33 (0)7 76 23 29 19
REACT THERAPEUTICS Emile Roussel, CEO +33 (0)6 87 88 40 76
Visuel React therapeutics FEDER


  • Restore anticancer drug efficacy
  • Stop anticancer drugs efflux
  • Improve the quality of care
  • Extend the use of anticancer drug on the market

Key words

  • Cancer
  • Multidrug resistance
  • Chemotherapy
  • Protein
  • Inhibitor

Intellectual Property

  • 1 patent

Partnerships & Rewards

  • Région Auvergne-Rhône-Alpes
  • 2021 i-PhD French Deeptech PhD Competition Winner
  • Fonds FEDER - Région Auvergne Rhône Alpes


  • DPM


  • CNRS
  • UGA

Linksium Continuum

  • Maturation
  • Incubation


  • Incorporated startups


Clinical data show that more than 90% of the deaths are related to multidrug resistance (MDR) phenomena. Among them, REACT THERAPEUTICS is targeting a key protein involved in efflux drug: the Breast Cancer Resistance Protein (BCRP). It is able to transport numerous drugs including anticancer drugs.


To beat the drug efflux, REACT THERAPEUTICS has discovered ValOMé, an ABC transporter inhibitor as a new BCRP drug class. ValOMé is an effective, selective, and non-toxic lead preclinical drug. At the same time, it is developing BioRes, a BCRP biomarker to detect and monitor the expression level of BCRP.


  • Restore the treatments efficacy
  • Decrease the side and/or adverse effects
  • Increase the number of therapeutic options
  • Improve the care quality
  • Reduce the cost and the duration of treatments
  • Increase the chance of survival.

State of progress

In mice, the combination of ValOMé + irinotecan can improve treatment efficacy by 60% compared to irinotecan alone and increase survival by 75%. REACT THERAPEUTICS' studies show that ValOMé is not toxic in terms of genotoxicity, cardiotoxicity, etc. Finally, ValOMé is selective for BCRP and has limited action on main CYPs.


ValOMé could be combined with 40 known resistant anticancer drugs used to treat 14 cancers. These drugs belong to different class of treatments: chemotherapy, targeted therapy, hormone therapy and immunotherapy.

REACT THERAPEUTICS is currently assessing ValOMé in colon, pancreas, and breast cancer to restore treatment efficacy.