Bevacizumab plus chemotherapy continued beyond first progression in patients withmetastatic colorectal cancer previously treated with bevacizumab plus chemotherapy: ML18147 study KRAS subgroup findings

Stefan Kubicka Prof., R. Greil, T. André, J. Bennouna, J. Sastre, E. Van Cutsem, R. Von Moos, P. Österlund, I. Reyes-Rivera, T. Müller, M. Makrutzki, D. Arnold, J. Andel, P. Balcke, B. Benedicic, W. Eisterer, M. Fridrik, B. Jagdt, F. Keil, A. KretschmerP. Krippl, H. Oexle, M. Pecherstorfer, H. Samonigg, M. Schmid, J. Thaler, C. Tinchon, H. Weiss, J. Arts, M. De Man, G. Demolin, J. Janssens, M. Polus, B. Benczikova, B. Melichar, J. Prausova, P. Vitek, F. Z. Andersen, B. B. Jensen, N. Keldsen, K. Østerlind, K. Vistisen, A. Elme, A. Magi, K. Ojamaa, R. Ristamäki, T. Salminen, M. Ben Abdelghani, O. Bouche, C. Borg, K. Bouhier-Leporrier, G. Breysacher, L. Chone, M. C. Clavero Fabri, G. Deplanque, F. Desseigne, L. M. Dourthe, J. Ezenfis, R. Faroux, E. François, C. Garnier, M. H. Gaspard, M. Hebbar, J. F. Illory, M. C. Kaminsky, T. Lecomte, J. L. Legoux, B. Levache, C. Lobry, J. P. Lotz, M. Mabro, S. Manet-Lacombe, S. Manfredi, T. Matysiak Budnik, L. Miglianico, L. Mineur, I. Moullet, H. Naman, P. Nouyrigat, S. Oziel-Taieb, H. Perrier, D. Pezet, J. Philip, V. Pottier, M. Porneuf, M. Ramdani, D. Re, Y. Rinaldi, D. Spaeth, J. Taieb, E. Terrebonne, P. Texereau, A. Thirot Bidault, C. Tournigand, N. Tubiana-Mathieu, J. M. Vantelon, F. Viret, M. Ychou, M. Bangerter, M. E. Bertram, B. Bohnsteen, L. Brinkmann, K. Caca, C. Constantin, H. J. Cordes, G. Dietrich, J. Eggert, E. Engel, J. Fahlke, H. Fensterer, A. Florschütz, G. Folprecht, H. Forstbauer, W. Freier, M. Freund, N. Frickhofen, E. Gäbele, M. Geißler, F. Gieseler, T. Göhler, U. Graeven, M. Groschek, M. Grundeis, U. Hacker, V. Hagen, H. F. Hebart, S. Hegewisch-Becker, M. Heike, T. Herrmann, B. Hildebrandt, H. G. Höffkes, G. Hübner, J. Hübner, E. Kettner, M. Kneba, J. W. Kohnke, G. Kojouharoff, C. König, A. Kretzschmar, H. Kröning, K. Kürner, F. Lammert, C. Lerchenmüller, A. Lück, J. Meiler, H. G. Mergenthaler, L. Müller, C. Müller-Naendrup, A. Nusch, J. Papke, R. Porschen, J. Rädle, C. Reddemann, K. Ridwelski, J. Riera-Knorrenschild, J. Rudi, A. Schmalenberger, C. C. Schimanski, F. Schlegel, C. Schlichting, P. Schmidt, W. Schmiegel, S. Schmitz, H. Schulze-Bergkamen, I. Schwaner, A. Schwarzer, M. Schwerdtfeger, J. Selbach, M. Sieber, J. Siebler, P. Staib, M. Stauch, C. C. Steffens, P. Stübs, J. Tischendorf, T. Trarbach, D. Tummes, A. R. Valdix, A. Vogel, G. P.L. Von Wichert, M. Walther, W. Welslau, G. Wilhelm, H. Wobster, T. Wolf, N. Zeigenhagen, B. Zomorodbaksch, E. Batman, H. J. Bloemendal, D. F.S. Kehrer, T. Guren, G. Indrebø, C. Kersten, H. Soerbye, M. Fragoso, R. Fragoso, J. C. Mellidez, A. Sa, A. Aljobran, T. Darwish, V. Alonso-Orduna, J. Aparicio, E. Aranda, C. Bosch, A. Galan-Brotons, I. Busquier Hernandez, J. C. Camara, J. M. Campos Cervera, C. Carlos Garcia Giron, P. M. Del Prado, O. Donnay, P. Escudero, E. Falco, J. Gallego Plazas, P. Garcia Alfonso, E. Gonzalez Flores, C. Gravalos, R. Guardeno, A. Juárez, A. Lopez Ladron, F. Losa Gaspa, J. MaVicent Vergé, E. Marcuello Gaspar, B. Massuti Sureda, J. Molina, I. C. Montero, A. L. Muñoa, M. B. Naranjo, M. J. Oruezabal Moreno, V. Pachón Olmos, C. Pericay, J. J. Reina Zoilo, F. Rivera, A. Ruiz Casado, M. J. Safont, A. Salud Salvia, M. Tobena, J. C. Toral, V. Valenti, M. Valladares Ayerbes, J. M. Vieitez, R. Vera, J. M. Vieitez, A. Berglund, E. Fernebro, V. Hess-Umbricht, M. Pless, R. Popescu, R. Winterhalder

72 Zitate (Scopus)

Abstract

Background: ML18147 evaluated continued bevacizumab with second-line chemotherapy for patients with metastatic colorectal cancer (mCRC) progressing after the standard first-line bevacizumab-containing therapy. Patients and methods: Evaluating outcomes according to tumor Kirsten rat sarcoma virus oncogene (KRAS) status was an exploratory analysis. KRAS data were collected from local laboratories (using their established methods) and/or from a central laboratory (mutation-specific Scorpion amplification-refractory mutation system). No adjustment was made for multiplicity; analyses were not powered to detect statistically significant differences. Results: Of 820 patients, 616 (75%) had unambiguous KRAS data; 316 (51%) had KRAS wild-type tumors and 300 (49%) had mutant KRAS tumors. The median progression-free survival (PFS) was 6.4 months for bevacizumab plus chemotherapy and 4.5 months for chemotherapy [P < 0.0001; HR = 0.61; 95% confidence interval (CI): 0.49-0.77] for wild-type KRAS and 5.5 and 4.1 months, respectively (P = 0.0027; HR = 0.70; 95% CI: 0.56-0.89) for mutant KRAS. The median overall survival (OS) was 15.4 and 11.1 months, respectively (P = 0.0052; HR = 0.69; 95% CI: 0.53-0.90) for wild-type KRAS and 10.4 versus 10.0 months, respectively (P = 0.4969; HR = 0.92; 95% CI: 0.71-1.18) for mutant KRAS. In both analyses, no treatment interaction by KRAS status was observed (PFS, P = 0.4436; OS, P = 0.1266). Conclusions: Bevacizumab beyond first progression represents an option for patients with mCRC treated with bevacizumab plus standard first-line chemotherapy, independent of KRAS status.

OriginalspracheEnglisch
ZeitschriftAnnals of Oncology
Jahrgang24
Ausgabenummer9
Seiten (von - bis)2342-2349
Seitenumfang8
ISSN0923-7534
DOIs
PublikationsstatusVeröffentlicht - 09.2013

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