Blokhin's Russian Cancer Research Center

This study collects real-world information from 60 Russian breast cancer patients who have already received trastuzumab deruxtecan treatment. Researchers will review medical records to understand how well the drug works in everyday clinical practice. The goal is to learn about tr…

This study aims to understand if the molecular markers used to guide treatment in stomach and esophageal cancers change when the cancer spreads to the brain. Researchers will analyze stored tissue samples from 30 patients to compare the original tumor with its brain metastasis. T…