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In Vitro Methods for Comparing Target Binding and CDC Induction Between Therapeutic Antibodies: Applications in Biosimilarity Analysis
Published on: May 4, 2017
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[Biosimilars in oncology. Focus on SB3 studies.]
Marzia Del Re1, Lucia Del Mastro2
1Dipartimento di Medicina Clinica e Sperimentale, Azienda Ospedaliero-Universitaria Pisana, Pisa.
Recenti Progressi in Medicina
|December 20, 2018
Summary
SB3, a trastuzumab biosimilar, demonstrated equivalent efficacy to originator trastuzumab in HER2-positive breast cancer patients. This phase III study confirms comparable safety and immunogenicity, supporting SB3 as a viable treatment option.
Area of Science:
- Oncology
- Pharmacology
- Clinical Trials
Background:
- HER2-positive breast cancer remains a significant health concern.
- Trastuzumab is a standard therapy for HER2-positive breast cancer.
- Biosimilars offer potential for cost-effective treatment options.
Purpose of the Study:
- To evaluate the efficacy of SB3, a trastuzumab biosimilar, compared to originator trastuzumab.
- To demonstrate therapeutic equivalence between SB3 and trastuzumab.
- To assess the safety and immunogenicity profiles of both treatments.
Main Methods:
- A phase III, randomized, multicenter study.
- 800 patients with HER2-positive breast cancer received neoadjuvant chemotherapy.
- Patients were treated with either SB3 or originator trastuzumab.
- Pathological complete response (pCR) was the primary endpoint.
Main Results:
- The pathological complete response rates were 51.7% for SB3 and 42.0% for trastuzumab.
- Equivalence in efficacy was demonstrated between SB3 and originator trastuzumab.
- Comparable safety and immunogenicity were observed for both treatment groups.
Conclusions:
- SB3 is an effective and safe biosimilar for treating HER2-positive breast cancer.
- The study supports the therapeutic equivalence of SB3 to originator trastuzumab.
- SB3 represents a valuable alternative treatment option for patients.
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