FDA Approval Summary: Margetuximab plus Chemotherapy for Advanced or Metastatic HER2-Positive Breast Cancer

Autor: Melanie Royce, Christy L. Osgood, Anup K. Amatya, Mallorie H. Fiero, C.J. George Chang, Tiffany K. Ricks, Krithika A. Shetty, Jeffrey Kraft, Junshan Qiu, Pengfei Song, Rosane Charlab, Jingyu Yu, Kathryn E. King, Anshu Rastogi, Brian Janelsins, Wendy C. Weinberg, Kathleen Clouse, Vicky Borders-Hemphill, Lindsey Brown, Candace Gomez-Broughton, Zhong Li, Thuy Thanh Nguyen, Zhihao Qiu, Anh-Thy Ly, Suyoung Chang, Tingting Gao, Chi-Ming Tu, Bellinda King-Kallimanis, William F. Pierce, Kelly Chiang, Clara Lee, Kirsten B. Goldberg, John K. Leighton, Shenghui Tang, Richard Pazdur, Julia A. Beaver, Laleh Amiri-Kordestani
Rok vydání: 2021
Předmět:
Zdroj: Clin Cancer Res
ISSN: 1557-3265
1078-0432
DOI: 10.1158/1078-0432.ccr-21-3247
Popis: On December 16, 2020, the FDA granted regular approval to margetuximab-cmkb (MARGENZA), in combination with chemotherapy, for the treatment of adult patients with HER2-positive (HER2+) metastatic breast cancer who have received two or more prior anti-HER2 regimens, at least one of which was for metastatic disease. Approval was based on data from SOPHIA, a multicenter, randomized, open-label, active controlled study comparing margetuximab with trastuzumab, in combination with chemotherapy. The primary efficacy endpoint was progression-free survival (PFS) by blinded independent central review. SOPHIA demonstrated a 0.9-month difference in median PFS between the two treatment arms [5.8 vs. 4.9 months, respectively; stratified HR, 0.76 (95% confidence interval: 0.59–0.98; P = 0.0334)]. Overall survival (OS) was immature at the data cut-off date of September 10, 2019. Infusion-related reactions (IRR) are an important safety signal associated with margetuximab plus chemotherapy. In SOPHIA, 13% of patients treated with margetuximab plus chemotherapy reported IRRs, of which 1.5% were grade 3. The most commonly reported adverse drug reactions (>10%) with margetuximab in combination with chemotherapy were fatigue/asthenia, nausea, diarrhea, vomiting, constipation, headache, pyrexia, alopecia, abdominal pain, peripheral neuropathy, arthralgia/myalgia, cough, decreased appetite, dyspnea, IRR, palmar-plantar erythrodysesthesia, and extremity pain. Overall, the favorable risk-benefit profile for margetuximab when added to chemotherapy supported its approval for the intended indication.
Databáze: OpenAIRE
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