ArticleJournal of cancer research and clinical oncology2018
TA-MUC1 as detected by the fully humanized, therapeutic antibody Gatipotzumab predicts poor prognosis in cervical cancer.
Article in Journal of cancer research and clinical oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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10 authors at 4 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundGatipotuzumab is a fully humanized antibody which was designed to detect a cancer-specific glyco-modification of MUC1 (termed 'TA-MUC1') and which was optimized to effectively trigger antibody-dependent-cell-mediated cytotoxicity (ADCC) in cancer cells. Clinical trials investigating therapeutic efficacy of this antibody have been published recently. The current analysis aimed to determine whether TA-MUC1-as detected by Gatipotuzumab-is expressed in cervical cancer tissue and whether binding of Gatipotuzumab is associated with clinico-pathological variables including recurrence free (RFS) and overall survival (OS).
methodsCervical cancer tissue (n = 250) was stained for TA-MUC1 using Gatipotuzumab employing a standardized immunohistochemistry protocol. Staining was scored by applying the IR-score. Results were binarized and tested for association to clinico-pathological parameters.
resultsTA-MUC1 as stained by Gatipotuzumab was detected in 188 (75.2%) out of the 250 cervical cancer cases investigated. Expression of TA-MUC1 was restricted to cancer cells and was positively correlated with viral oncoprotein E6. Membrane staining of TA-MUC1 predicted significantly reduced RFS and OS. Importantly, expression of TA-MUC1 at the cell surface identified a group of early stage cervical cancer patients with exceptional short RFS and OS.
conclusionsWe report TA-MUC1-the antigen detected by Gatipotzumab-to be widely expressed in cervical cancer tissue and to localize to the cell membrane. The latter is seen as a pre-requisite to target this epitope by antibody-drug conjugates or antibodies eliciting ADCC. Since especially, membrane localization of TA-MUC1 predicted poor prognosis, evaluating Gatipotuzumab for its therapeutic efficacy in cervical cancer may turn attractive.
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