Allergy Therapeutics is a pharmaceutical group focused on allergy vaccination. Co. mainly sell its products in European countries and its pipeline of products in clinical development includes vaccines for grass, tree and house dust mite, as well as a peanut allergy vaccine in preclinical development. Co. sells a range of aluminium-free allergy vaccines and diagnostics. Co. sells both injectable and sublingual (oral) formats. The commonly prescribed are those for the treatment of pollen related allergies, particularly for allergies to grasses, weeds and trees. Co.'s vaccines trade under various brand names depending on the market, e.g. Pollinex Quattro, Polligoid and TA Graser Top.

DBV Technologies is a clinical-stage specialty biopharmaceutical company focused on immunotherapy. Co.'s therapeutic approach is based on epicutaneous immunotherapy (EPIT), its proprietary method of delivering biologically active compounds to immune systems through intact skin using a platform called Viaskin. Viaskin is an electrostatic patch that offers a self-administered, non-invasive immunotherapy to patients. Once applied on intact skin, Viaskin forms a condensation chamber that hydrates the skin and solubilizes the antigen, allowing it to penetrate the epidermis, where it's captured by Langerhans cells. Co.'s patients include infants and children suffering from severe food allergies.