Zepzelca (lurbinectedin) vs Krazati (adagrasib)

Zepzelca (lurbinectedin) vs Krazati (adagrasib)

Zepzelca (lurbinectedin) is a chemotherapy agent specifically approved for the treatment of adults with metastatic small cell lung cancer (SCLC) that has progressed after platinum-based chemotherapy. Krazati (adagrasib), on the other hand, is a targeted therapy designed to inhibit the KRAS G12C mutation, which is found in certain types of non-small cell lung cancer (NSCLC) and other solid tumors; it is not indicated for SCLC. When deciding between these medications, it is crucial to determine the specific type of lung cancer and its genetic makeup, as Zepzelca is used for SCLC, while Krazati targets a specific mutation in NSCLC.

Difference between Zepzelca and Krazati

Metric Zepzelca (lurbinectedin) Krazati (adagrasib)
Generic name Lurbinectedin Adagrasib
Indications Metastatic Small Cell Lung Cancer Non-small cell lung cancer with KRAS G12C mutation
Mechanism of action Inhibits transcription and induces DNA breaks Covalently and irreversibly inhibits KRAS G12C
Brand names Zepzelca Krazati
Administrative route Intravenous Oral
Side effects Myelosuppression, fatigue, increased liver enzymes, etc. Diarrhea, nausea, vomiting, increased liver enzymes, etc.
Contraindications Hypersensitivity to lurbinectedin or excipients Hypersensitivity to adagrasib or excipients
Drug class Alkylating drug KRAS G12C inhibitor
Manufacturer Pharma Mar Mirati Therapeutics

Efficacy

Zepzelca (Lurbinectedin) for Lung Cancer

Zepzelca (lurbinectedin) is a medication specifically approved for the treatment of adults with metastatic small cell lung cancer (SCLC) that has progressed after platinum-based chemotherapy. The efficacy of Zepzelca was evaluated in a multicenter, single-arm, open-label clinical trial. In this study, patients with metastatic SCLC who had disease progression on or after platinum-based chemotherapy were treated with Zepzelca. The primary endpoint was the overall response rate (ORR), which reflects the proportion of patients who experienced a significant reduction in their tumor size. Secondary endpoints included duration of response (DOR), overall survival (OS), and progression-free survival (PFS).

The results demonstrated that Zepzelca had an ORR of approximately 35%, with a median DOR of 5.3 months. While these results are promising, it is important to note that the median OS and PFS were not definitively established in the initial findings. However, the observed responses in a previously treated SCLC population suggest that Zepzelca can be an effective treatment option for patients with limited alternatives due to the aggressive nature of the disease and the typical rapid progression after first-line therapy.

Krazati (Adagrasib) for Lung Cancer

Krazati (adagrasib) is a novel medication designed to target a specific mutation in non-small cell lung cancer (NSCLC) known as the KRAS G12C mutation. This mutation is present in a subset of patients with NSCLC and has been historically difficult to target with existing therapies. Krazati's efficacy in lung cancer is being evaluated in ongoing clinical trials, with a focus on patients who have the KRAS G12C mutation and have previously received systemic therapy.

While comprehensive data on the efficacy of Krazati in NSCLC is still being gathered, early clinical trial results have shown promising activity in patients with the KRAS G12C mutation. The ORR and DOR in these studies have suggested that Krazati may offer a new treatment avenue for patients with this specific genetic alteration. As Krazati is still under investigation, further data from larger clinical trials will be necessary to fully understand its efficacy and safety profile in the treatment of KRAS G12C-mutated NSCLC.

Regulatory Agency Approvals

Zepzelca
  • Food and Drug Administration (FDA), USA
Krazati
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA

Access Zepzelca or Krazati today

If Zepzelca or Krazati 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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