Afinitor (everolimus) vs Gavreto (pralsetinib)

Afinitor (everolimus) vs Gavreto (pralsetinib)

Afinitor (everolimus) is a targeted therapy known as an mTOR inhibitor, primarily used to treat certain types of cancers such as advanced renal cell carcinoma, subependymal giant cell astrocytoma (SEGA), and neuroendocrine tumors, as well as for its immunosuppressive properties in transplant medicine. Gavreto (pralsetinib), on the other hand, is a selective RET kinase inhibitor indicated for the treatment of adult patients with metastatic rearranged during transfection (RET) fusion-positive non-small cell lung cancer (NSCLC), advanced or metastatic RET-mutant medullary thyroid cancer (MTC), and RET fusion-positive thyroid cancer. The choice between Afinitor and Gavreto would largely depend on the specific type and molecular profile of the cancer being treated, with Gavreto being the preferred option for cancers driven by RET alterations, and Afinitor being suitable for a broader range of cancers where mTOR is a therapeutic target.

Difference between Afinitor and Gavreto

Metric Afinitor (everolimus) Gavreto (pralsetinib)
Generic name Everolimus Pralsetinib
Indications Advanced hormone receptor-positive, HER2-negative breast cancer, advanced neuroendocrine tumors, renal cell carcinoma, tuberous sclerosis complex-associated seizures, subependymal giant cell astrocytoma, renal angiomyolipoma Metastatic RET fusion-positive non-small cell lung cancer, advanced or metastatic RET-mutant medullary thyroid cancer, RET fusion-positive thyroid cancer
Mechanism of action mTOR inhibitor RET kinase inhibitor
Brand names Afinitor, Afinitor Disperz, Zortress Gavreto
Administrative route Oral Oral
Side effects Mouth ulcers, infections, rash, fatigue, diarrhea, edema, abdominal pain, nausea, fever, pneumonitis Fatigue, constipation, musculoskeletal pain, hypertension, decreased levels of white blood cells and platelets, QT interval prolongation
Contraindications Hypersensitivity to everolimus or other rapamycin derivatives Hypersensitivity to pralsetinib
Drug class Antineoplastic agent, mTOR kinase inhibitor Antineoplastic agent, tyrosine kinase inhibitor
Manufacturer Novartis Blueprint Medicines Corporation

Efficacy

Efficacy of Afinitor (Everolimus) in Lung Cancer

Afinitor (everolimus) is primarily known for its use in treating various types of tumors, including advanced renal cell carcinoma and certain types of breast cancer. However, its efficacy in lung cancer, particularly non-small cell lung cancer (NSCLC), has been explored due to its mechanism of action as an mTOR inhibitor. mTOR is a protein that plays a role in cell growth, proliferation, and survival, and by inhibiting it, everolimus can potentially slow the progression of cancer. Clinical trials have investigated everolimus in NSCLC, often in combination with other therapies. While it has shown some promise, the efficacy of everolimus specifically in lung cancer requires further research to fully establish its role and to determine the patient populations that may benefit the most from its use.

Efficacy of Gavreto (Pralsetinib) in Lung Cancer

Gavreto (pralsetinib) is a more recent addition to the lung cancer treatment landscape, specifically targeting rearranged during transfection (RET) fusion-positive non-small cell lung cancer (NSCLC). Pralsetinib is a selective RET kinase inhibitor that has demonstrated significant efficacy in NSCLC patients with RET fusions. Clinical trials have shown that pralsetinib can achieve high response rates in this subset of lung cancer patients, with a favorable safety profile. The U.S. Food and Drug Administration (FDA) granted accelerated approval to Gavreto for the treatment of adult patients with metastatic RET fusion-positive NSCLC based on the results of these studies.

It is important to note that the efficacy of Gavreto is specifically linked to the presence of RET gene alterations, which occur in a small percentage of NSCLC patients. For those with this genetic profile, pralsetinib offers a targeted therapy option that can lead to significant tumor shrinkage and prolonged progression-free survival. The precision medicine approach in lung cancer treatment underscores the importance of genetic testing to identify appropriate candidates for therapies like Gavreto.

In conclusion, while Afinitor's role in lung cancer treatment is still being defined, Gavreto has established itself as an effective treatment for RET fusion-positive NSCLC. The use of these medications exemplifies the trend towards personalized medicine in oncology, where treatments are increasingly tailored to the specific genetic characteristics of a patient's tumor. As research continues, the efficacy profiles of these drugs may expand, offering hope for improved outcomes in lung cancer patients.

Regulatory Agency Approvals

Afinitor
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA
  • Health Canada
  • Pharmaceuticals and Medical Devices Agency (PMDA), Japan
  • Therapeutic Goods Administration (TGA), Australia
Gavreto
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA

Access Afinitor or Gavreto today

If Afinitor or Gavreto 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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