Vertex Announces U.S. FDA Approval for ORKAMBI(R) (lumacaftor/ivacaftor) in Children With Cystic Fibrosis Ages 12 to <24 months
-With this approval, approximately 300 children with two copies of the F508del mutation will have a medicine to treat the underlying cause of their disease for the first time-
"Treating children with cystic fibrosis as early in life as possible is critically important, because early treatment has the potential to slow the progression of this devastating disease," said
ORKAMBI(R) was first approved in 2015 in the
About Cystic Fibrosis
Cystic fibrosis (CF) is a rare, life-shortening genetic disease affecting more than 83,000 people globally. CF is a progressive, multi-organ disease that affects the lungs, liver, pancreas, GI tract, sinuses, sweat glands and reproductive tract. CF is caused by a defective and/or missing CFTR protein resulting from certain mutations in the CFTR gene. Children must inherit two defective CFTR genes -- one from each parent -- to have CF, and these mutations can be identified by a genetic test. While there are many different types of CFTR mutations that can cause the disease, the vast majority of people with CF have at least one F508del mutation. CFTR mutations lead to CF by causing the CFTR protein to be defective or by leading to a shortage or absence of CFTR protein at the cell surface. The defective function and/or absence of CFTR protein results in poor flow of salt and water into and out of the cells in a number of organs. In the lungs, this leads to the buildup of abnormally thick, sticky mucus, chronic lung infections and progressive lung damage that eventually leads to death for many patients. The median age of death is in the early 30s.
About ORKAMBI(R) (lumacaftor/ivacaftor)
In people with two copies of the F508del mutation, the CFTR protein is not processed and trafficked normally within the cell, resulting in little to no CFTR protein at the cell surface.
ORKAMBI(R) (lumacaftor/ivacaftor) is an oral medicine that is a combination of lumacaftor and ivacaftor. Lumacaftor is designed to increase the amount of mature protein at the cell surface by targeting the processing and trafficking defect of the F508del-CFTR protein. Ivacaftor, which is known as a CFTR potentiator, is designed to facilitate the ability of CFTR proteins to transport salt and water across the cell membrane. The combined actions of lumacaftor and ivacaftor help hydrate and clear mucus from the airways.
The approval in children ages 12 to (R) was generally well tolerated, and the safety profile and pharmacokinetics were similar to that observed in studies in patients ages 2 years and older. Additional study results, including reductions in sweat chloride concentration, suggest the potential for CF disease modification with the use of ORKAMBI(R).
Results from this study were recently published in the
INDICATION AND USAGE
ORKAMBI(R) (lumacaftor/ivacaftor) is a prescription medicine used for the treatment of cystic fibrosis (CF) in patients aged 1 year and older who have two copies of the F508del mutation (F508del/F508del) in their CFTR gene.
ORKAMBI should not be used in patients other than those who have two copies of the F508del mutation in their CFTR gene.
It is not known if ORKAMBI is safe and effective in children under 1 year of age.
IMPORTANT SAFETY INFORMATION
Patients should not take ORKAMBI if they are taking certain medicines or herbal supplements, such as: the antibiotics rifampin or rifabutin; the seizure medicines phenobarbital, carbamazepine, or phenytoin; the sedatives and anti-anxiety medicines triazolam or midazolam; the immunosuppressant medicines cyclosporine, everolimus, sirolimus, or tacrolimus; or St. John's wort.
Before taking ORKAMBI, patients should tell their doctor about all their medical conditions, including if they: have or have had liver problems, have kidney problems, have lung problems, have had an organ transplant, or are using birth control. Hormonal contraceptives, including oral, injectable, transdermal, or implantable forms should not be used as a method of birth control when taking ORKAMBI. Patients should tell their doctor if they are pregnant or plan to become pregnant (it is unknown if ORKAMBI will harm the unborn baby) or if they are breastfeeding or planning to breastfeed (it is unknown if ORKAMBI passes into breast milk).
ORKAMBI may affect the way other medicines work and other medicines may affect how ORKAMBI works. Therefore, the dose of ORKAMBI or other medicines may need to be adjusted when taken together.
Patients should especially tell their doctor if they take: antifungal medicines such as ketoconazole, itraconazole, posaconazole, or voriconazole; or antibiotics such as telithromycin, clarithromycin, or erythromycin.
When taking ORKAMBI, patients should tell their doctor if they stop ORKAMBI for more than 1 week as the doctor may need to change the dose of ORKAMBI or other medicines the patient is taking.
What to avoid while taking ORKAMBI?
Patients should not eat or drink grapefruit products during the first week of treatment with ORKAMBI. Eating or drinking grapefruit products can increase the amount of ORKAMBI in the blood.
ORKAMBI can cause serious side effects, including:
Worsening of liver function in people with severe liver disease. The worsening of liver function can be serious or cause death. Patients should talk to their doctor if they have been told they have liver disease as their doctor may need to adjust the dose of ORKAMBI.
High liver enzymes in the blood, which can be a sign of liver injury. The patient's doctor will do blood tests to check their liver before they start ORKAMBI, every 3 months during the first year of taking ORKAMBI, and annually thereafter. The patient should call the doctor right away if they have any of the following symptoms of liver problems: pain or discomfort in the upper right stomach (abdominal) area; yellowing of the skin or the white part of the eyes; loss of appetite; nausea or vomiting; dark, amber-colored urine; or confusion.
Breathing problems such as trouble breathing, shortness of breath or chest tightness in patients when starting ORKAMBI, especially in patients who have poor lung function. The patient should call their doctor right away if they experience these symptoms.
An increase in blood pressure in some people receiving ORKAMBI. The patient should call their doctor right away if they have an increase in blood pressure.
Abnormality of the eye lens (cataract) in some children and adolescents receiving ORKAMBI. For children and adolescents, the patient's doctor should perform eye examinations before and during treatment with ORKAMBI to look for cataracts
The most common side effects of ORKAMBI include: breathing problems, such as shortness of breath and chest tightness; nausea; diarrhea; fatigue; increase in a certain blood enzyme called creatinine phosphokinase; rash; gas; common cold, including sore throat, stuffy or runny nose; flu or flu-like symptoms; and irregular, missed, or abnormal periods (menses) and increase in the amount of menstrual bleeding.
Side effects seen in children are similar to those seen in adults and adolescents. Additional common side effects seen in children include: cough with sputum, stuffy nose, headache, stomach pain, and increase in sputum.
Please click here to see the full Prescribing Information for ORKAMBI (lumacaftor/ivacaftor).
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