Symdeko* (tezacaftor / ivacaftor) vs Trixacar (elexacaftor/tezacaftor/ivacaftor; ivacaftor)

Symdeko* (tezacaftor / ivacaftor) vs Trixacar (elexacaftor/tezacaftor/ivacaftor; ivacaftor)

Symdeko (tezacaftor/ivacaftor) and Trikafta (elexacaftor/tezacaftor/ivacaftor; ivacaftor) are both used in the treatment of cystic fibrosis (CF) in patients with specific genetic mutations. Symdeko is approved for individuals with CF ages 6 years and older who have two copies of the F508del mutation or one mutation that is responsive to tezacaftor/ivacaftor based on in vitro data or clinical evidence. Trikafta, on the other hand, is a newer combination therapy approved for individuals with CF ages 6 years and older who have at least one F508del mutation, and it has been shown to improve lung function more significantly than earlier treatments like Symdeko due to the addition of elexacaftor, which enhances the processing and trafficking of the defective CFTR protein.

Difference between Symdeko* and Trixacar

Metric Symdeko* (tezacaftor / ivacaftor) Trikafta (elexacaftor/tezacaftor/ivacaftor; ivacaftor)
Generic name Tezacaftor / ivacaftor Elexacaftor/tezacaftor/ivacaftor; ivacaftor
Indications Cystic fibrosis in patients aged 6 years and older who have two copies of the F508del mutation in the CFTR gene or at least one mutation in the CFTR gene that is responsive to tezacaftor/ivacaftor Cystic fibrosis in patients aged 12 years and older who have at least one F508del mutation in the CFTR gene or a mutation in the CFTR gene that is responsive to elexacaftor/tezacaftor/ivacaftor
Mechanism of action Tezacaftor improves the conformational stability of F508del-CFTR, allowing it to be processed and trafficked to the cell surface, where ivacaftor increases the probability of the chloride channel opening Elexacaftor binds to the F508del-CFTR protein and facilitates its processing and trafficking to the cell surface; tezacaftor helps maintain its correct conformation at the cell surface; ivacaftor increases the probability of the chloride channel opening
Brand names Symdeko Trikafta
Administrative route Oral Oral
Side effects Headache, nausea, sinus congestion, dizziness, increased liver enzymes, rash, flu-like symptoms, respiratory infections Headache, diarrhea, abdominal pain, rash, increased liver enzymes, flu-like symptoms, sinusitis, fatigue, respiratory infections
Contraindications Patients with hypersensitivity to tezacaftor, ivacaftor, or any of the excipients Patients with hypersensitivity to elexacaftor, tezacaftor, ivacaftor, or any of the excipients
Drug class CFTR modulator CFTR modulator
Manufacturer Vertex Pharmaceuticals Vertex Pharmaceuticals

Efficacy

Efficacy of Symdeko (tezacaftor/ivacaftor) in Cystic Fibrosis

Symdeko, a combination of tezacaftor and ivacaftor, is a medication approved for the treatment of cystic fibrosis (CF) in patients who have specific mutations in the CFTR gene. The efficacy of Symdeko in cystic fibrosis has been demonstrated in several clinical trials. These trials have shown that Symdeko can lead to improvements in lung function, as measured by the percent predicted forced expiratory volume in one second (ppFEV1), especially in individuals with two copies of the F508del mutation or with one mutation that is responsive to tezacaftor/ivacaftor treatment. Patients have also experienced reductions in pulmonary exacerbations and improvements in body mass index (BMI), respiratory symptoms, and quality of life.

Efficacy of Trikafta (elexacaftor/tezacaftor/ivacaftor; ivacaftor) in Cystic Fibrosis

Trikafta, which combines elexacaftor, tezacaftor, and ivacaftor, represents a significant advancement in the treatment of cystic fibrosis for patients with at least one F508del mutation in the CFTR gene, which is the most common mutation causing CF. Clinical studies have shown that Trikafta can lead to substantial improvements in lung function, with patients experiencing a mean increase in ppFEV1. The treatment has also been associated with reductions in sweat chloride levels, which is an indicator of improved CFTR function, and a decrease in the rate of pulmonary exacerbations, thus enhancing overall health and stability in CF patients.

Both Symdeko and Trikafta target the underlying cause of cystic fibrosis by improving the function of the defective CFTR protein. While Symdeko is suitable for a subset of patients with specific mutations, Trikafta is applicable to a broader CF population due to its efficacy in individuals with at least one F508del mutation. The introduction of these modulator therapies has been a breakthrough in the management of cystic fibrosis, offering patients the potential for a better quality of life and a more optimistic outlook on their disease prognosis.

It is important to note that while Symdeko and Trikafta have shown considerable efficacy in improving various aspects of cystic fibrosis, they are not cures for the disease. Ongoing research and clinical trials continue to evaluate the long-term benefits and potential risks associated with these treatments. Furthermore, the efficacy of these medications can vary among individuals, and treatment should be tailored to each patient's specific genetic makeup and health status. As with any medication, patients should consult with their healthcare provider to determine the most appropriate treatment plan for their condition.

Regulatory Agency Approvals

Symdeko*
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA
Trixacar
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA
  • ANMAT (ARG)

Access Symdeko* or Trixacar today

If Symdeko* or Trixacar are not approved or available in your country (e.g. due to supply issues), you can access them via Everyone.org.

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