Humoral response to catumaxomab correlates with clinical outcome: results of the pivotal phase II/III study in patients with malignant ascites
Abstract The trifunctional antibody catumaxomab is a targeted immunotherapy for the intraperitoneal treatment of malignant ascites. In a Phase II/III trial in cancer patients (n = 258) with malignant ascites, catumaxomab showed a clear clinical benefit vs. paracentesis and had an acceptable safety p...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2012
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| In: |
International journal of cancer
Year: 2011, Jahrgang: 130, Heft: 9, Pages: 2195-2203 |
| ISSN: | 1097-0215 |
| DOI: | 10.1002/ijc.26258 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1002/ijc.26258 Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/ijc.26258 
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| Verfasserangaben: | Marion G. Ott, Frederik Marmé, Gerhard Moldenhauer, Horst Lindhofer, Michael Hennig, Rolf Spannagl, Mirko M. Essing, Rolf Linke and Diane Seimetz |
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| 245 | 1 | 0 | |a Humoral response to catumaxomab correlates with clinical outcome |b results of the pivotal phase II/III study in patients with malignant ascites |c Marion G. Ott, Frederik Marmé, Gerhard Moldenhauer, Horst Lindhofer, Michael Hennig, Rolf Spannagl, Mirko M. Essing, Rolf Linke and Diane Seimetz |
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| 520 | |a Abstract The trifunctional antibody catumaxomab is a targeted immunotherapy for the intraperitoneal treatment of malignant ascites. In a Phase II/III trial in cancer patients (n = 258) with malignant ascites, catumaxomab showed a clear clinical benefit vs. paracentesis and had an acceptable safety profile. Human antimouse antibodies (HAMAs), which could be associated with beneficial humoral effects and prolonged survival, may develop against catumaxomab as it is a mouse/rat antibody. This post hoc analysis investigated whether there was a correlation between the detection of HAMAs 8 days after the fourth catumaxomab infusion and clinical outcome. HAMA?positive and HAMA?negative patients in the catumaxomab group and patients in the control group were analyzed separately for all three clinical outcome measures (puncture?free survival, time to next puncture and overall survival) and compared to each other. There was a strong correlation between humoral response and clinical outcome: patients who developed HAMAs after catumaxomab showed significant improvement in all three clinical outcome measures vs. HAMA?negative patients. In the overall population in HAMA?positive vs. HAMA?negative patients, median puncture?free survival was 64 vs. 27 days (p < 0.0001; HR 0.330), median time to next therapeutic puncture was 104 vs. 46 days (p = 0.0002; HR 0.307) and median overall survival was 129 vs. 64 days (p = 0.0003; HR 0.433). Similar differences between HAMA?positive and HAMA?negative patients were seen in the ovarian, nonovarian and gastric cancer subgroups. In conclusion, HAMA development may be a biomarker for catumaxomab response and patients who developed HAMAs sooner derived greater benefit from catumaxomab treatment. | ||
| 534 | |c 2011 | ||
| 650 | 4 | |a catumaxomab | |
| 650 | 4 | |a clinical outcome | |
| 650 | 4 | |a humoral response | |
| 650 | 4 | |a malignant ascites | |
| 650 | 4 | |a trifunctional antibody | |
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