Epidermal growth factor receptor variant III (EGFRvIII) vaccine (CDX-110) in GBM
2016
2021 Background: Unlike conventional therapies for GBM, immunologic targeting of tumor-specific gene mutations allows precise eradication of neoplastic cells with reduced toxicity. EGFRvIII is a constitutively activated and immunogenic mutation not expressed in normal tissues, but widely expressed in GBM and other neoplasms. The cancer vaccine CDX-110 is comprised of an EGFRvIII-specific peptide sequence linked to keyhole limpet hemocyanin (KLH). Methods: A phase II multi-center trial assessed the immunogenicity and efficacy of CDX-110 in patients with newly-diagnosed, EGFRvIII+ GBM. After resection and radiation / TMZ, patients received CDX-110 vaccinations biweekly x 3, then monthly until tumor progression. Sequential cohorts received CDX-110 alone [ACTIVATE (n = 18)] or in combination with TMZ (200 mg/m2 x 5/28 days [ACT II A (n = 13)]) or (100 mg/m2 x 21/28 days [ACT II B (n=10)]). Results: Reversible systemic drug hypersensitivity reactions were seen in 1 ACTIVATE and 4 ACT II patients. Two patients ...
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