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Drug Evaluation

Combination lumacaftor and ivacaftor therapy for cystic fibrosis

Pages 233-242 | Received 18 Oct 2015, Accepted 14 Dec 2015, Published online: 12 Feb 2016

References

Papers of special note have been highlighted as either of interest (•) or of considerable interest (••) to readers

•• This is the pivotal clinical trial of ivacaftor vs. placebo in CF mediated by the G551D CFTR mutation.

  • Davies JC, Wainwright CE, Canny GJ, et al. Efficacy and safety of ivacaftor in patients aged 6 to 11 years with cystic fibrosis with a G551D mutation. Am J Respir Crit Care Med. 2013;187:1219–1225.
  • De Boeck K, Munck A, Walker S, et al. Efficacy and safety of ivacaftor in patients with cystic fibrosis and a non-G551D gating mutation. Journal of Cystic Fibrosis. 2014;13(Issue 6):674–680.
  • Moss RB, Flume PA, Elborn JS, et al. On behalf of the VX11-770-110 (KONDUCT) Study Group. Efficacy and safety of ivacaftor in patients with cystic fibrosis who have an R117H-CFTR mutation: a double blind, randomised controlled trial. Lancet Respir Med. 2015;3(7):524–533.
  • Van Goor F, Hadida S, Grootenhuis PD, et al. Rescue of CF airway epithelial cell function in vitro by a CFTR potentiator, VX-770. Proc Natl Acad Sci USA. 2009;106:18825–18830.
  • Van Goor F, Hadida S, Groothenhuis PDJ, et al. Correction of the F508del-CFTR protein processing defect in vitro by investigational drug VX-809. Proc Natl Acad Sci USA. 2009;108:18843–18848.

• This paper describes the physiologic effects of lumacaftor in vivo.

  • Flume PA, Liou TG, Borowitz DS, et al. Ivacaftor in subjects with cystic fibrosis who are homozygous for the F508del-CFTR mutation. Chest. 2012;142:718–724.
  • Clancy JP, Rowe SM, Accurso FJ, et al. Results of a phase IIa study of VX-809: an investigational CFTR corrector compound, in subjects with cystic fibrosis homozygous for the F508del-CFTR mutation. Thorax. 2012;67:12–18.
  • Boyle MP, Bell SC, Konstan MW, et al. Randomised trial of combined CFTR corrector and potentiator therapy in F508del-CFTR cystic fibrosis. Lancet Respir Med. 2014;2:527–538.
  • Wainwright CE, Elborn JS. Ramsey BW et al. lumacaftor–ivacaftor in patients with cystic fibrosis homozygous for Phe508del CFTR. New England J Med. 2015;373:220–231.

• This is the pivotal phase 3 trial of lumacaftor-ivacaftor therapy for F508del homozygous cystic fibrosis.

  • Sawicki GS, McKone EF, Pasta DJ, et al. Sustained benefit from ivacaftor demonstrated by combining clinical trial and CF patient registry data. Am J Respir Crit Care Med. 2015;192:836–842.
  • Sanders DB, Bittner RC, Rosenfeld M, et al. Failure to recover to baseline pulmonary function after cystic fibrosis pulmonary exacerbation. Am J Respir Crit Care Med. 2010;182:627–632.
  • Jones AM, Barry PJ. Hot off the breath: lumacaftor/ivacaftor for patients homozygous for Phe508del-CFTR: should we curb our enthusiasm? [cited September 28, 2015]. Available from http://thorax.bmj.com/.
  • Cholon DM, Quinney NL, Fulcher ML, et al. Potentiator ivacaftor abrogates pharmacological correction of ΔF508 CFTR in Cystic Fibrosis. Sci Transl Med. 2014;6(246):246ra96. doi:10.1126/scitranslmed.3008680.
  • Veit G, Avramescu RG, Perdomo D, et al. Some gating potentiators, including VX-770, diminish ΔF508-CFTR functional expression. Sci Transl Med. 2014;6(246):246ra97. doi:10.1126/scitranslmed.3008889.
  • Bush A, Simmonds NJ. Hot off the breath: I’ve got a cost for the 64 million dollar question. Thorax. 2012;67:382–384.
  • O’Sullivan BP, Orenstein DM, Milla CE. Pricing for orphan drugs: Will the market bear what society cannot? Jama. 2013;310:1343–1344.
  • Cohen D, Raftery J. Paying twice: questions over high cost of cystic fibrosis drug developed with charitable funding. Bmj. 2014;348:g1445.

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