Sacituzumab govitecan shows promise in treating the most aggressive type of breast cancer
Metastatic triple-negative breast cancer is the most aggressive type of breast cancer with a poor prognosis. Chemotherapy has remained the only standard treatment option, but it is associated with low response rates and short progression-free survival. SG, which was developed and is manufactured by Immunomedics, a subsidiary of Gilead Sciences, received accelerated approval by the U.S. Food and Drug Administration in April 2020 on the basis of favorable phase 1/2 clinical trials, with full approval contingent on the confirmatory phase 3 results.
ASCENT is a global study to evaluate the safety and efficacy of the antibody drug conjugate compared to chemotherapy in 529 patients with metastatic triple-negative breast cancer whose cancer had relapsed or was resistant to at least two other forms of therapy. The investigators found that median progression-free survival with the ADC agent was 5.6 months compared to 1.7 months with chemotherapy, and that median overall survival was 12.1 months with the ADC agent compared to 6.7 months with chemotherapy. The study also found that the response rate— that is, shrinkage in the size of the metastatic tumor sites—was 35% after administration of ADC compared to 5% with chemotherapy.
ADCs are complex molecules that combine the targeting capabilities of monoclonal antibodies with the cancer-killing strength of cytotoxic drugs. In the case of sacituzumab govitecan, the monoclonal antibody seeks out the antigen (or protein), known as Trop-2 that is overexpressed on the surface of tumor cells, and delivers the anti-cancer drug SN-38 in a highly concentrated dose that destroys cancerous cells while sparing normal ones. ADCs have been established as a treatment option for HER2-positive breast cancer.
"We believe antibody drug conjugates are particularly promising as building blocks for effective new combination treatments," says Bardia. "The goal is to not only improve patient outcomes, but also to establish ADCs as first-line therapy or even earlier so that these powerful agents can play a role in preventing the spread of triple-negative breast cancer."
Biopharma PEG is dedicated to being your most reliable partner to provide high-quality PEG linkers to promote the progress of your ADC R&D. PEG product 2-((Azido-PEG8-carbamoyl)methoxy)acetic acid (CAS No.: 846549-37-9) acts as a PEG linker in the ADC drug Sacituzumab govitecan, we have this product in stock, we can also support custom synthesis with different quantities based on customers' requirment.
Biopharma PEG Scientific Inc.
Address: 108 Water Street, Room 4D, Watertown, MA 02472, USA
Biopharma PEG is a biotechnology-oriented company in Watertown, Massachusetts. We are dedicated to manufacturing and supplying high purity polyethylene glycol (PEG) derivatives and reagents, monodisperse PEG, Click Chemistry reagents, PEGylation services and custom PEG derivative synthesis to clients worldwide. These PEG reagents have been widely used in bioconjugation, antibody-drug conjugates (ADCs) therapeutic, drug delivery and diagnostics field.
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