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KALYDECO is indicated for the treatment of cystic fibrosis (CF) in patients age 6 years and older who have one of the following mutations in the CFTR gene: G551D, G1244E, G1349D, G178R, G551S, S1251N, S1255P, S549N, or S549R. If the patient’s genotype is unknown, an FDA-cleared CF mutation test should be used to detect the presence of a CFTR mutation followed by verification with bi-directional sequencing when recommended by the mutation test instructions for use.
Limitations of Use
Not effective in patients with CF who are homozygous for the F508del mutation in the CFTR gene.
CFTR, cystic fibrosis transmembrane conductance regulator.
KALYDECO is a prescription medicine used for the treatment of cystic fibrosis (CF) in patients age 2 years and older who have one of the following mutations in their CF gene: G551D, G1244E, G1349D, G178R, G551S, S1251N, S1255P, S549N, or S549R.
KALYDECO is used for the treatment of CF in patients age 2 years and older who have an R117H mutation in their CF gene.
KALYDECO is not for use in people with CF due to other mutations in the CF gene. KALYDECO is not effective in patients with CF with two copies of the F508del mutation (F508del/F508del) in the CF gene.
It is not known if KALYDECO is safe and effective in children under 2 years of age.
Do not take KALYDECO if you take certain medicines or herbal supplements such as: the antibiotics rifampin (Rifamate®, Rifater®) or rifabutin (Mycobutin®); seizure medications such as phenobarbital, carbamazepine (Tegretol®, Carbatrol®, Equetro®) or phenytoin (Dilantin®, Phenytek®); or St. John’s wort.
Talk to your doctor before taking KALYDECO if you take any of these medicines or supplements.
Before you take KALYDECO, tell your doctor if you:
KALYDECO may affect the way other medicines work, and other medicines may affect how KALYDECO works.
Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements as the dose of KALYDECO may need to be adjusted when taken with certain medications.
Especially tell your doctor if you take antifungal medications such as ketoconazole (eg, Nizoral®), itraconazole (eg, Sporanox®), posaconazole (eg, Noxafil®), voriconazole (eg, Vfend®), or fluconazole (eg, Diflucan®); or antibiotics such as telithromycin (eg, Ketek®), clarithromycin (eg, Biaxin®), or erythromycin (eg, Ery-Tab®).
KALYDECO can cause dizziness in some people who take it. Do not drive a car, use machinery, or do anything that needs you to be alert until you know how KALYDECO affects you.
You should avoid food containing grapefruit or Seville oranges while you are taking KALYDECO.
Tell your doctor if you have any side effect that bothers you or that does not go away. These are not all the possible side effects of KALYDECO. For more information, ask your doctor or pharmacist.
You are encouraged to report negative side effects of prescription drugs to the FDA at www.fda.gov/medwatch, or call
KALYDECO® (ivacaftor) is a cystic fibrosis transmembrane conductance regulator (CFTR) potentiator indicated for the treatment of cystic fibrosis (CF) in patients age 6 years and older who have one of the following mutations in the CFTR gene: G551D, G1244E, G1349D, G178R, G551S, S1251N, S1255P, S549N, or S549R. If the patient's genotype is unknown, an FDA-cleared CF mutation test should be used to detect the presence of a CFTR mutation followed by verification with bi-directional sequencing when recommended by the mutation test instructions for use.
Limitations of Use
KALYDECO is not effective in patients with CF who are homozygous for the F508del mutation in the CFTR gene.
Click here to access full Prescribing Information.
References: 1. KALYDECO (ivacaftor) [prescribing information]. Boston, MA: Vertex Pharmaceuticals Incorporated; February 2014. 2. Ramsey BW, Davies J, McElvaney NG, et al; VX08-770-102 Study Group. A CFTR potentiator in patients with cystic fibrosis and the G551D mutation. N Engl J Med. 2011;365(18):1663-1672. 3. Davies JC, Wainwright CE, Canny GJ, et al; VX08-770-103 (ENVISION) Study Group. 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(11):1219-1225. 4. Zielenski J. Genotype and phenotype in cystic fibrosis. Respiration. 2000;67(2):117-133. 5. Welsh MJ, Ramsey BW, Accurso F, Cutting GR. Cystic fibrosis: membrane transport disorders. In: Valle D, Beaudet A, Vogelstein B, et al, eds. The Online Metabolic & Molecular Bases of Inherited Disease. The McGraw-Hill Companies, Inc; 2004:part 21, chap 201. http://www.ommbid.com. Accessed April 16, 2014. 6. Welsh MJ, Smith AE. Molecular mechanisms of CFTR chloride channel dysfunction in cystic fibrosis. Cell. 1993;73(7):1251-1254. 7. Orenstein DM, Spahr JE, Weiner DJ. Cystic Fribrosis: A Guide for Patient and Family. 4th ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2012. 8. Yu H, Burton B, Huang C-J, et al. Ivacaftor potentiation of multiple CFTR channels with gating mutations. J Cyst Fibros. 2012;11(3):237-245.
9. US CF Foundation, Johns Hopkins University. The Hospital for Sick Children. The Clinical and Functional TRanslation of CFTR (CFTR2). http://www.cftr2.org/index.php. Accessed April 16, 2014. 10. Berwouts S, Morris MA, Girodon E, Schwarz M, Stuhrmann M, Dequeker E. Mutation nomenclature in practice: findings and recommendations from the cystic fibrosis external quality assessment scheme. Hum Mutat. 2011;32(11):1197-1203. 11. US Department of Agriculture, Agricultural Research Service, Nutrient Data Laboratory Web site. http://www.ndb.nal.usda.gov/. Accessed April 16, 2014.
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