Summary
Cystic fibrosis (CF) is a fatal hereditary disease; patients with CF have an average lifespan of 30 years. By cleaving neutrophil-derived DNA, dornase alfa (recombinant human deoxyribonuclease I) decreases the adhesiveness and viscoelasticity of sputum in the infected lungs of patients with CF. As a result, respiratory function is improved in patients with all degrees of disease severity, and the relative risk of pulmonary exacerbations is reduced in patients with mild to moderate disease.
Resource utilisation (days spent in hospital or receiving parenteral antibiotics) in patients with mild to moderate disease is also reduced by dornase alfa, as evidenced by a placebo-controlled trial in >900 patients. Cost savings generated by these reductions in resource use during 24 weeks of dornase alfa therapy offset about 17 to 37.5% of the acquisition cost of the drug, depending on local cost data for various countries. Reductions in resource utilisation with dornase alfa have not been observed in patients with severe disease.
Available cost-effectiveness and cost-utility analyses are not fully published. One analysis estimated that the incremental cost of avoiding one hospitalisation was about $Can15 000 relative to standard therapy after 1 year of treatment. Informal analysis in the UK suggests a cost per quality-adjusted life-year of £25 000 for dornase alfa.
Some quality-of-life (QOL) domains (mainly cough frequency and chest congestion) have shown modest improvement in patients treated with dornase alfa, mainly those with mild CF. Persuasive evidence of QOL benefit is lacking in those with more severe disease.
Identifying patients most likely to benefit from dornase alfa therapy is essential to maximise clinical and cost benefits. The lack of a demonstrated reduction in resource utilisation in patients with severe CF makes its use more difficult to justify economically in this group than in those with less severe disease. However, in the absence of other treatments for this group, economic considerations must be weighed against clinical benefits.
In conclusion, the acquisition cost of dornase alfa is partially offset by savings gained by reducing resource utilisation in patients with mild to moderate CF, and the drug appears to improve quality of life in some patients, mostly those with less severe disease. However, in the absence of guidance from definitive cost-effectiveness analyses, individual healthcare providers must make their own decisions about how best to provide dornase alfa to patients with CF in a rational and cost-justifiable manner.
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References
Bryson HM, Sorkin EM. Dornase alfa: a review of its pharmacological properties and therapeutic potential in cystic fibrosis. Drugs 1994 Dec; 48: 894–906
National Institutes of Health. Consensus development statement: genetic testing for cystic fibrosis [online]. National Institutes of Health; 1997 Apr 14–16. Available from: http://odp.nih.gov/consensus/statements/cdc/106/106stmt.html [accessed 1997 Jun 13]
Ramsey BW. Management of pulmonary disease in patients with cystic fibrosis. N Engl J Med 1996 Jul 18; 335: 179–88
Witt DM, Anderson L. Dornase alfa: a new option in the management of cystic fibrosis. Pharmacotherapy 1996 Jan–Feb; 16: 40–8
Zhao C, Wang I, Lehrer RI. Widespread expression of beta-defensin hBD-1 in human secretory glands and epithelial cells. FEBS Lett 1996; 396: 319–22
Smith JJ, Travis SM, Greenberg EP, et al. Cystic fibrosis airway epithelia fail to kill bacteria because of abnormal airway surface fluid. Cell 1996 Apr 19; 85: 229–36
Cramer GW, Bosso JA. The role of dornase alfa in the treatment of cystic fibrosis. Ann Pharmacother 1996 Jun; 30: 656–61
Hodson ME. Aerosolized dornase alfa (rhDNase) for therapy of cystic fibrosis. Am J Respir Crit Care Med 1995 Mar; 151 (Pt 2): S70–4
Perras C, Otten N. Pulmozyme: clinical and economic impacts [online]. Canadian Coordinating Office for Health Technology Assessment; 1996 Feb. Available from: URL: http://www.ccohta.ca/pubs/english/pulmozym [Accessed 1997 Jul 8]
Koch C, McKenzie SG, Kaplowitz H, et al. International practice patterns by age and severity of lung disease in cystic fibrosis: data from the Epidemiological Registry of Cystic Fibrosis (ERCF). Pediatr Pulmonol 1997. In press
Levy LD, Durie PR, Pencharz PB, et al. Effects of long-term nutritional rehabilitation on body composition and clinical status in malnourished children and adolescents with cystic fibrosis. J Pediatr 1985 Aug; 107: 225–30
Geller DE. Aerosolized dornase alpha in cystic fibrosis: is there a role in the management of patients with early obstructive lung disease? Pediatr Pulmonol 1997. In press
Shale DJ. The cost of care in cystic fibrosis. Thorax 1992 Sep; 47: 673
Robert G, Stevens A, Colin-Jones D. Dornase alfa for cystic fibrosis [letter]. BMJ 1995 Sep 23; 311: 813
Ginsberg G, Blau H, Kerem E, et al. Cost-benefit analysis of a national screening programme for cystic fibrosis in an Israeli population. Health Econ 1994 Jan–Feb; 3: 5–23
Garber AM, Fenerty JP. Costs and benefits of prenatal screening for cystic fibrosis. Med Care 1991 May; 29: 473–89
Royal College of Physicians. Cystic fibrosis in adults. Recommendations for care of patients in the UK. J R Coll Physicians Lond 1991 Jan; 25(1): 12–5
Rous E, Coppel A, Haworth J, et al. A purchaser experience of managing new expensive drugs: interferon beta. BMJ 1996 Nov 9; 313: 1195–6
Wildhagen MF, Verheij JBGM, Verzijl JG, et al. The nonhospital costs of care of patients with CF in The Netherlands: results of a questionnaire. Eur Respir J 1996; 9: 2215–9
Robson M, Abbott J, Webb K, et al. A cost description of an adult cystic fibrosis unit and cost analyses of different categories of patients. Thorax 1992 Sep; 47: 684–9
Wildhagen MF, Verheij JBGM, Hilderink HBM, et al. Cost of care of patients with cystic fibrosis in The Netherlands in 1990–1. Thorax 1996 Mar; 51: 298–301
Ramsey BW, Astley SJ, Aitken ML, et al. Efficacy and safety of short-term administration of aerosolized recombinant human deoxyribonuclease in patients with cystic fibrosis. Am Rev Respir Dis 1993 Jul; 148: 145–51
Ranasinha C, Assoufi B, Shak S, et al. Efficacy and safety of short-term administration of aerosolised recombinant human DNase I in adults with stable stage cystic fibrosis. Lancet 1993 Jul 24; 342: 199–202
Fuchs HJ, Borowitz DS, Christiansen DH, et al. Effect of aerosolized recombinant human DNase on exacerbations of respiratory symptoms and on pulmonary function in patients with cystic fibrosis. N Engl J Med 1994; 331(10): 637–42
Mellis CJ, Australian rhDNase Phase IIIb Study Group. Effect of rhDNase on quality of life and spirometry in patients with cystic fibrosis [abstract]. Aust N Z J Med 1997 Apr; 27: 257
Romano L, Antonelli M, Gaiero A, et al. Audit on one year treatment with recombinant human deoxyribonuclease in 97 CF patients [abstract]. Chest 1996 Oct; 110 Suppl.: 156S
Shah PL, Scott SF, Geddes DM, et al. Two years experience with recombinant human DNase I in the treatment of pulmonary disease in cystic fibrosis. Respir Med 1995 Aug; 89: 499–502
McCoy K, Hamilton S, Johnson C. Effects of 12-week administration of dornase alfa in patients with advanced cystic fibrosis lung disease. Chest 1996 Oct; 110: 889–95
Shah PI, Bush A, Canny GJ, et al. Recombinant human DNase I in cystic fibrosis patients with severe pulmonary disease: a short-term, double-blind study followed by six months open-label treatment. Eur Respir J 1995 Jun; 8: 954–8
Wilmott RW, Amin RS, Colin AA, et al. Aerosolized recombinant human DNase in hospitalized cystic fibrosis patients with acute pulmonary exacerbations. Am J Respir Crit Care Med 1996 Jun; 153 (Pt 1): 1914–7
Dornase alfa prescribing information. Genentech, Inc. South San Francisco, USA 1996
Oster G, Huse DM, Lacey MJ, et al. Effects of recombinant human DNase therapy on healthcare use and costs in patients with cystic fibrosis. Ann Pharmacother 1995 May; 29: 459–64
Menzin G, Oster G, Davies L, et al. A multinational economic evaluation of rhDNase in the treatment of cystic fibrosis. Int J Technol Assess Health Care 1996; 12(1): 52–61
Graf von der Schulenberg J-M, Greiner W, von der Hardt H. Socioeconomic evaluation of the influence of rhDNase on the costs of treating respiratory-tract infections in patients with cystic fibrosis [in German]. Med Klin 1995 Apr 15; 90: 220–4.
Marra CA, Carleton BC, Basmadjian D, et al. Comment: cost of rhDNase in cystic fibrosis [letter]. Ann Pharmacother 1995 Oct; 29: 1050–1
Bates RD, Nahata MC. Cost of rhDNase in cystic fibrosis. Ann Pharmacother 1995 Oct; 29: 1051
Brown TER, Glennie JL, Carleton BC. A pharmacoeconomic evaluation of DNase in cystic fibrosis [abstract]. Pharmacotherapy 1996 Jan–Feb; 16: 134–5
Tetley TD, Rogers DF. Development of new treatments for lung disease. Respir Med 1996 Jan; 90: 5–23
Tullis DE, Guyatt GH. Quality of life in cystic fibrosis. Pharmacoeconomics 1995 Jul; 8: 23–33
Ramsey BW, Boat TF. Outcome measures for clinical trials in cystic fibrosis. Summary of a Cystic Fibrosis Foundation Consensus Conference. J Pediatr 1994 Feb; 124: 177–92
Kaplan RM, Anderson JP, Wu AW, et al. The quality of well-being scale: applications in AIDS, cystic fibrosis and arthritis. Med Care 1989 Mar; 27 (3 Suppl.): S27–43
Orenstein DM, Pattishall ED, Nixon PA, et al. Quality of well-being before and after antibiotic treatment of pulmonary exacerbation in patients with cystic fibrosis. Chest 1990 Nov; 98(5): 1081–4
Orenstein DM, Nixon PA, Ross EA, et al. The quality of well-being in cystic fibrosis. Chest 1989; 95: 344–7
Czyzewski DI, Mariotto MJ, Bartholomew LK, et al. Measurement of quality of well being in a child and adolescent cystic fibrosis population. Med Care 1994 Sep; 32: 965–72
Götz I, Eichler I, Götz M. Quality of life in adults with cystic fibrosis [letter]. Thorax 1997 Apr; 52: 397
Congleton J, Hodson M, Duncan-Skingle F. Quality of life in adults with cystic fibrosis [reply, letter]. Thorax 1997; 52: 397
de Jong W, Kaptein AA, van der Schans CP, et al. Quality of life in patients with cystic fibrosis. Pediatr Pulmonol 1997; 23: 95–100
Munzenberger PJ, Van Wagnen CA, Abdulhamid I, et al. Impact of dornase alfa on the quality of life in patients with mild cystic fibrosis [abstract]. Pharmacotherapy 1996 May–Jun; 16: 515
Heijerman HGM, van Rossem RN, Bakker W. Effect of rhDNase on lung function and quality of life in adult cystic fibrosis patients. Neth J Med 1995 Jun; 46: 293–7
FDA approves Pulmozyme for advanced cystic fibrosis. Scrip 1996 Dec 10; 2188: 17
Eddy DM. Principles for making difficult decisions in difficult times. JAMA 1994 Jun 8; 271(22): 1792–8
Nishimura LY, Shane R. Therapeutic dilemmas: an approach to the management of expensive pharmaceutical advances. Pharmacoeconomics 1994; 6(6): 498–505
Eddy DM. Health system reform: will controlling costs require rationing services? JAMA 1994 Jul 27; 272(4): 324–8
Eddy DM. Rationing resources while improving quality: how to get more for less. JAMA 1994 Sep 14; 272(10): 817–24
Spencer D, Weller P. Dornase-alfa for cystic fibrosis [letter]. Lancet 1995 May 20; 345: 1307
Davis PB. Evolution of therapy for cystic fibrosis. N Engl J Med 1994 Sep 8; 331: 672–3
Kanga JF. Dornase alfa therapy in cystic fibrosis: who should get it? Chest 1996 Oct; 110: 871–2
Dornase alfa price list. Red Book, 1996
Gumery L, Edenborough F, Stableforth D, et al. Physiotherapy and nebulised drug use in a Birmingham adult cystic fibrosis unit: patient practice, knowledge and adherence [abstract no. P91]. Thorax 1996; 51 Suppl. 3: A48
Pharmac funding. GP Weekly 1997 Mar 12: 2
Johnanesson M. The Australian guidelines for subsidisation of Pharmaceuticals: the road to cost-effective drug prescribing? Pharmacoeconomics 1992; 2(5): 355–62
Collier J. Dornase-alfa and orphan drugs [letter]. Lancet 1995 Sep 2; 346: 633
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Various sections of the manuscript reviewed by: B. Carleton, Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada; A. Clarke, Institute of Medical Genetics, University Hospital of Wales, Heath Park, Cardiff, Wales; D. Czyzewski, Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Texas Children’s Hospital, Texas Medical Center, Houston, Texas, USA; S. Fiel, Allegheny University Hospital — MCP Division, Pulmonary/Critical Care Medicine, Philadelphia, Pennsylvania, USA; G. Ginsberg, Department of Data Analysis, Division of Computing and Information, Ministry of Health, Jerusalem, Israel; H.G.M. Heijerman, Adult Cystic Fibrosis Centre, Department of Pulmonology, Leyenburg Hospital, The Hague, The Netherlands; J.F. Kanga, Division of Pediatric Pulmonology, University of Kentucky, Lexington, Kentucky, USA; N.J.W. Lewis, Lewis Consulting Group, Inc., Wilmington, Delaware, USA; G. Oster, Policy Analysis, Inc., Brookline, Massachusetts, USA; D.J. Shale, Section of Respiratory Medicine, Department of Medicine, University of Wales College of Medicine, Llandough Hospital, Penarth, Cardiff, Wales.
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Goa, K.L., Lamb, H. Dornase Alfa. Pharmacoeconomics 12, 409–422 (1997). https://doi.org/10.2165/00019053-199712030-00011
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DOI: https://doi.org/10.2165/00019053-199712030-00011