CFTR (cystic fibrosis transmembrane conductance regulator) modulators and Pulmozyme help fight CF in different ways. CFTR modulators and Pulmozyme both work to reduce the amount of thick, sticky mucus in the lungs and each is an important part of the multitherapy approach to managing CF.
Oral medications that help chloride ion conduction by modulating the defective CFTR channel protein in the cells lining the lungs and other organs.
Pulmozyme is inhaled and goes directly to the lungs to help reduce viscosity by cleaving extracellular DNA. This breaks up sticky mucus, making it looser and thinner.
In the clinical studies that supported the recent FDA approval of Trikafta© (elexacaftor/tezacaftor/ivacaftor and ivacaftor), patients agreed to remain on their standard-of-care CF therapies such as Pulmozyme and other treatments.
* These trials were not designed to assess the efficacy and safety of these agents in combination with Pulmozyme.15
Trikafta is a registered trademark of Vertex Pharmaceuticals Inc.
Can help reduce mucus viscosity by cleaving extracellular DNA, and breaking up sticky mucus
Improve chloride ion conduction by modulating the defective CFTR channel protein
Restore airway surface liquid that has been depleted
Move mucus through the airways to help counter defective mucociliary clearance
Kill bacteria and help prevent and treat infection
Help open airways more by relaxing the airway lining, which has become inflamed due to structural damage/bronchiectasis
DNA-laden mucus leads to a cycle of obstruction, infection, and inflammation. The buildup of material called extracellular DNA makes the mucus in the lungs even thicker than before, making it more difficult to clear the lungs properly. As mucus continues to get thicker, more bacteria become trapped, which can eventually lead to a respiratory tract infection. As white blood cells attempt to fight the germs caught in the mucus, they leave behind extracellular DNA. The buildup of these remains leads to further obstruction and lung damage.2-5
Pulmozyme is the only FDA-approved mucolytic agent that breaks up and thins mucus7
In CF, thick mucus laden with extracellular DNA hinders mucociliary clearance, contributing to the cycle of obstruction, infection, and inflammation that ultimately leads to reduced lung function.
Pulmozyme is the only FDA-approved mucolytic that breaks up mucus to affect the obstruction-infection-inflammation cycle.
In vitro, Pulmozyme cleaves neutrophil-derived DNA.1-5
This action has been shown to reduce sputum viscoelasticity, allowing patients with CF to clear mucus more easily.
CF mucus before Pulmozyme
CF mucus after Pulmozyme
Pulmozyme is a mucolytic that, in preclinical laboratory studies, was shown to target and cleave extracellular DNA to decrease mucus viscosity. It is a solution of recombinant human deoxyribonuclease I, an enzyme with a primary amino acid sequence that is identical to the native human enzyme.
Pulmozyme (dornase alfa) [package insert]. South San Francisco, CA: Genentech, Inc; 2024.
Pulmozyme (dornase alfa) [package insert]. South San Francisco, CA: Genentech, Inc; 2024.
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Data on file. Genentech, a member of the Roche Group.
Data on file. Genentech, a member of the Roche Group.
Cystic Fibrosis Foundation Patient Registry 2016 Annual Data Report. Bethesda, MD. ©2017 Cystic Fibrosis Foundation.
Cystic Fibrosis Foundation Patient Registry 2016 Annual Data Report. Bethesda, MD. ©2017 Cystic Fibrosis Foundation.
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Bakker EM, Volpi S, Salonini E, et al. Small airway deposition of dornase alfa during exacerbations in cystic fibrosis; a randomized controlled clinical trial. Pediatr Pulmonol. 2020;49(2):154-161.
Trikafta [Package insert]. Boston, MA: Vertex Pharmaceuticals Incorporated; 2021.
Trikafta [Package insert]. Boston, MA: Vertex Pharmaceuticals Incorporated; 2021.
Heijerman HGM, McKone EF, Downey DG, et al. Efficacy and safety of the elexacaftor plus tezacaftor plus ivacaftor combination regimen in people with cystic fibrosis homozygous for the F508del mutation: a double-blind, randomised, phase 3 trial. Lancet. 2019;394(10212)1940-1948.
Heijerman HGM, McKone EF, Downey DG, et al. Efficacy and safety of the elexacaftor plus tezacaftor plus ivacaftor combination regimen in people with cystic fibrosis homozygous for the F508del mutation: a double-blind, randomised, phase 3 trial. Lancet. 2019;394(10212)1940-1948.
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Pulmozyme Instructions for Use. South San Francisco, CA: Genentech, Inc; 2024.
Pulmozyme Instructions for Use. South San Francisco, CA: Genentech, Inc; 2024.
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Mogayzel PJ, Naureckas ET, Robinson KA, et al. Cystic fibrosis pulmonary guidelines. Chronic medications for maintenance of lung health. Am J Respir Crit Care Med. 2013;187:680-689.
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