Portrazza (necitumumab) vs Enhertu (fam-trastuzumab deruxtecan-nxki)

Portrazza (necitumumab) vs Enhertu (fam-trastuzumab deruxtecan-nxki)

Portrazza (necitumumab) is a monoclonal antibody used for the treatment of advanced squamous non-small cell lung cancer (NSCLC) in combination with chemotherapy for patients who have not previously received medication for metastatic disease. Enhertu (fam-trastuzumab deruxtecan-nxki) is an antibody-drug conjugate indicated for the treatment of patients with HER2-positive breast cancer who have received two or more prior anti-HER2-based regimens in the metastatic setting, and more recently, it has also been approved for non-small cell lung cancer patients with HER2 mutations. The choice between Portrazza and Enhertu would depend on the specific type of cancer a patient has, its molecular profile, including the presence of HER2 overexpression or mutation, and prior treatments they have received.

Difference between Portrazza and Enhertu

Metric Portrazza (necitumumab) Enhertu (fam-trastuzumab deruxtecan-nxki)
Generic name Necitumumab Fam-trastuzumab deruxtecan-nxki
Indications Metastatic squamous non-small cell lung cancer (NSCLC) HER2-positive breast cancer, HER2-positive gastric or gastroesophageal junction adenocarcinoma
Mechanism of action Epidermal growth factor receptor (EGFR) antagonist HER2-directed antibody and topoisomerase inhibitor conjugate
Brand names Portrazza Enhertu
Administrative route Intravenous infusion Intravenous infusion
Side effects Rash, hypomagnesemia, venous thromboembolism Nausea, fatigue, vomiting, alopecia, constipation
Contraindications None known Interstitial lung disease, pneumonitis, hypersensitivity to active ingredients
Drug class Monoclonal antibody Antibody-drug conjugate
Manufacturer Eli Lilly and Company Daiichi Sankyo and AstraZeneca

Efficacy

Efficacy of Portrazza (necitumumab) in Lung Cancer

Portrazza (necitumumab) is a monoclonal antibody designed for the treatment of lung cancer, specifically for the treatment of patients with metastatic squamous non-small cell lung cancer (NSCLC) who have not received prior chemotherapy for metastatic disease. Necitumumab targets the epidermal growth factor receptor (EGFR), a protein found on the surface of many cancer cells. By binding to EGFR, necitumumab can block the signals that promote the growth of cancer cells.

The efficacy of Portrazza was established in a clinical trial that compared necitumumab plus chemotherapy (gemcitabine and cisplatin) to chemotherapy alone. The study showed a statistically significant improvement in overall survival for patients receiving necitumumab in combination with chemotherapy compared to those who received chemotherapy alone. However, it is important to note that the benefit was modest and that necitumumab is associated with some serious risks, which should be weighed against the potential benefit.

Efficacy of Enhertu (fam-trastuzumab deruxtecan-nxki) in Lung Cancer

Enhertu (fam-trastuzumab deruxtecan-nxki) is a targeted therapy used in the treatment of lung cancer, specifically for adult patients with unresectable or metastatic non-small cell lung cancer (NSCLC) whose tumors have a HER2 mutation and who have received a prior systemic therapy. This medication is a conjugate of an anti-HER2 antibody and a cytotoxic agent, which allows for the delivery of the chemotherapy directly to the cancer cells that overexpress HER2.

The efficacy of Enhertu in lung cancer was demonstrated in a multicenter, open-label, single-arm trial, where patients with HER2-mutant NSCLC who had received prior systemic therapy were treated with Enhertu. The results showed a significant response rate with a median duration of response that was clinically meaningful. These findings suggest that Enhertu is an effective treatment option for patients with HER2-mutant NSCLC who have limited treatment options due to the progression of disease after other therapies.

Regulatory Agency Approvals

Portrazza
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA
  • Health Canada
Enhertu
  • European Medical Agency (EMA), European Union
  • Food and Drug Administration (FDA), USA
  • Pharmaceuticals and Medical Devices Agency (PMDA), Japan

Access Portrazza or Enhertu today

If Portrazza or Enhertu 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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