Drugs
IVACAFTOR
Overview
Ivacaftor is a medication used to treat a specific type of cystic fibrosis, a genetic disorder that affects the lungs and digestive system. It works by helping to improve the function of a protein in the body that is not working properly due to certain genetic mutations. This can help to reduce symptoms and improve lung function. The drug is taken orally, usually in the form of a pill. While it can be very effective, it's important to note that it's not a cure for cystic fibrosis, but a treatment to manage the condition.
Short Overview
Interactions with other Drugs
Ivacaftor can interact with other medications, potentially altering their effectiveness or increasing side effects. Certain drugs, such as antibiotics or antifungal medications, can increase the amount of Ivacaftor in the body, while others, like seizure medications or St. John's Wort, can decrease it. Therefore, it's crucial to monitor these interactions to ensure safe and effective treatment.
Genetic Influences
Ivacaftor's effectiveness and side effects are influenced by the interaction with certain genes. The CFTR gene, which when mutated causes cystic fibrosis, is the primary target of Ivacaftor, with the presence and type of mutations affecting the drug's performance. Additionally, the ABCB1 and CYP3A genes impact how Ivacaftor is processed and metabolized in the body, thereby influencing the drug's absorption, distribution, elimination, and the risk of side effects.
Genetic Influences
Ivacaftor, a medication used to treat cystic fibrosis, interacts with certain genes in the body. These genetic influences can affect how the drug works, who can take it, and what side effects may occur. Understanding these genetic factors can help healthcare providers tailor treatment plans for individuals. Here are some key genes that play a role in the effectiveness and side effects of Ivacaftor.
CFTR: This gene is the primary target of Ivacaftor. Mutations in this gene cause cystic fibrosis. Ivacaftor works by enhancing the function of the protein, which helps balance the salt and water levels in the body. Therefore, the presence and type of mutations can influence how well Ivacaftor works.
ABCB1: This gene influences how Ivacaftor is processed in the body. Variations in this gene can affect how much Ivacaftor is absorbed, distributed, and eliminated from the body, potentially impacting the drug's effectiveness and side effects.
CYP3A: This gene plays a role in how Ivacaftor is broken down in the body. Different versions of this gene can affect how quickly Ivacaftor is metabolized, which can influence the drug's effectiveness and the risk of side effects.
rs1800100
located on CFTR gene
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No known effect
rs1800111
located on CFTR gene
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Individuals with the genotype C/C have increased Drug Effect to IVACAFTOR.
Level of evidence
More info
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No summary available.
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No summary available.
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No known effect
rs7512462
located on SLC26A9 gene
Genotype
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Individuals with the genotype C/C have increased Drug Effect to IVACAFTOR.
Level of evidence
More info
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Individuals with the genotype C/T have increased Drug Effect to IVACAFTOR.
Level of evidence
More info
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Individuals with the genotype T/T have decreased Drug Effect to IVACAFTOR.
Level of evidence
More info
Legend:
Increased
Decreased
No known effect
rs1800100
located on CFTR gene
Genotype
Level of evidence
Effect
Summary
Breakdown
Drug Effect
Side Effects
Dosage
No summary available.
more info
Breakdown
Drug Effect
Side Effects
Dosage
No summary available.
more info
Breakdown
Drug Effect
Side Effects
Dosage
No summary available.
more info
Legend:
Increased
Decreased
No known effect
rs1800111
located on CFTR gene
Genotype
Level of evidence
Effect
Summary
Breakdown
Drug Effect
Side Effects
Dosage
Individuals with the genotype C/C have increased Drug Effect to IVACAFTOR.
more info
Breakdown
Drug Effect
Side Effects
Dosage
No summary available.
more info
Breakdown
Drug Effect
Side Effects
Dosage
No summary available.
more info
Legend:
Increased
Decreased
No known effect
rs7512462
located on SLC26A9 gene
Genotype
Level of evidence
Effect
Summary
Breakdown
Drug Effect
Side Effects
Dosage
Individuals with the genotype C/C have increased Drug Effect to IVACAFTOR.
more info
Breakdown
Drug Effect
Side Effects
Dosage
Individuals with the genotype C/T have increased Drug Effect to IVACAFTOR.
more info
Breakdown
Drug Effect
Side Effects
Dosage
Individuals with the genotype T/T have decreased Drug Effect to IVACAFTOR.
more info
Legend:
Increased
Decreased
No known effect
It is essential for healthcare providers to consider individual patient factors and understand their specefic genetic profiles to make personalized treatment decisions with IVACAFTOR
Variants that influence IVACAFTOR
Genes that influence IVACAFTOR
Dr. Wallerstorfer
Indication & Usage
Ivacaftor is primarily used to treat a specific type of cystic fibrosis, a genetic disorder that affects the lungs and digestive system. This medication is effective for patients who have a certain mutation in their CFTR gene, known as the G551D mutation. Additionally, it can be used for several other mutations in the CFTR gene. Ivacaftor is also used to treat certain types of congenital bilateral absence of the vas deferens (CBAVD), a condition that can cause infertility in men. Lastly, it can be used in some cases of chronic obstructive pulmonary disease (COPD), a lung disease characterized by long-term breathing problems.
Usage of IVACAFTOR
Ivacaftor is a medication used to treat a specific type of cystic fibrosis, a genetic disorder that affects the lungs and digestive system. It works by helping to improve the function of a protein in the body that is not working properly due to a certain genetic mutation. This protein helps to regulate the balance of salt and water in the body's cells, particularly those in the lungs. By improving the function of this protein, Ivacaftor can help to reduce the symptoms of cystic fibrosis and improve the quality of life for those affected. It is important to note that Ivacaftor is not a cure for cystic fibrosis, but it can help to manage the symptoms of the disease.
When not to use IVACAFTOR
Ivacaftor should not be used if a person has severe liver problems, as the liver plays a crucial role in processing this medication. Additionally, individuals with kidney issues should exercise caution, as these conditions can affect how the body handles the drug. If a person is pregnant or breastfeeding, the use of Ivacaftor should be carefully considered due to potential risks to the baby. Also, it's important to avoid grapefruit or Seville oranges while on this medication, as they can increase the amount of Ivacaftor in the body, leading to an increased risk of side effects. Lastly, individuals with certain genetic mutations may not respond to Ivacaftor, hence genetic testing is recommended before starting the treatment.
Storage of IVACAFTOR
Ivacaftor should be stored in a cool, dry place, away from direct sunlight and heat. It is crucial to keep it at room temperature, ideally between 20°C to 25°C. If transportation is necessary, the medication should be carried in a temperature-controlled container to maintain its efficacy. It is not recommended to freeze Ivacaftor. Always ensure the medication is kept out of reach from children and pets.
Side Effects
While Ivacaftor is a significant advancement in the treatment of certain genetic disorders, it is not without potential side effects. These effects vary in severity and frequency, and not all individuals taking the medication will experience them. It's important to note that the benefits of the medication often outweigh these potential side effects. However, it's crucial to be aware of them and to discuss any concerns with a healthcare provider.
Respiratory issues: Shortness of breath or chest tightness can occur. These symptoms may be a sign of bronchospasm, a condition where the airways become narrow and breathing becomes difficult.
Gastrointestinal problems: Stomach pain, nausea, and diarrhea are common. These symptoms can be uncomfortable but are usually manageable and temporary.
Elevated liver enzymes: Potential liver damage may be indicated by elevated liver enzymes. Regular blood tests are often recommended to monitor liver function while taking this medication.
Rash or skin reactions: Rash or skin reactions can occur. These are typically mild and resolve on their own, but if they persist or worsen, medical attention should be sought.
Dizziness: Dizziness can affect balance and coordination, so caution is advised when performing tasks that require these abilities.
Historical Perspective
Ivacaftor's journey began in the late 20th century when scientists were trying to find a solution for cystic fibrosis, a genetic disorder that affects the lungs and digestive system. The drug was developed by Vertex Pharmaceuticals with significant financial support and scientific input from the Cystic Fibrosis Foundation. The development process was based on a new approach, targeting the defective protein produced by the CFTR gene, known to cause cystic fibrosis. In 2012, the U.S. Food and Drug Administration (FDA) approved Ivacaftor, making it the first drug that treats the underlying cause, not just the symptoms, of cystic fibrosis. Since then, it has been approved and used in several other countries worldwide. Despite its high cost, Ivacaftor has shown significant benefits in improving lung function and quality of life for people with cystic fibrosis.