HER2+ esophageal carcinoma leptomeningeal metastases treated with intrathecal trastuzumab regimen

Materials & methods: We recently reported the largest trial of breast cancer patients with HER2 positive leptomeningeal metastases (LM) treated with trastuzumab. An additional treatment indication was explored as part of a single institution retrospective case series of HER2 positive esophageal...

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Main Authors: Scott A Wu, Dan Tong Jia, Margaret Schwartz, Mary Mulcahy, Kuanghua Guo, Matthew C Tate, Sean Sachdev, Nicolas Kostelecky, David J Escobar, Daniel J Brat, Amy B Heimberger, Rimas V Lukas
Format: Article
Language:English
Published: Taylor & Francis Group 2023-09-01
Series:CNS Oncology
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Online Access:https://www.futuremedicine.com/doi/10.2217/cns-2022-0018
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Summary:Materials & methods: We recently reported the largest trial of breast cancer patients with HER2 positive leptomeningeal metastases (LM) treated with trastuzumab. An additional treatment indication was explored as part of a single institution retrospective case series of HER2 positive esophageal adenocarcinoma LM (n = 2). Results: One patient received intrathecal trastuzumab (80 mg twice weekly) as part of their treatment regimen with durable long-term response and clearance of circulating tumor cells in the cerebral spinal fluid. The other patient demonstrated rapid progression and death as previously described in the literature. Conclusion: Intrathecal trastuzumab is a well-tolerated and reasonable therapeutic option worthy of further exploration for patients with HER2 positive esophageal carcinoma LM. An associative, but not a causal relationship, can be made regarding therapeutic intervention.
ISSN:2045-0907
2045-0915