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- W4361945433 abstract "<div>Abstract<p><b>Purpose:</b> We previously detected promising efficacy of neoadjuvant nintedanib (a multityrosine kinase inhibitor, TKI) in early HER2-negative breast cancer. In a preclinical study, we monitored stromal hypoxia with <sup>18</sup>F-fluoromisonidazole-positron emission tomography (18F-FMISO-PET); we found that reoxygenation of tumors (or lack of it) during a window-of-opportunity (WoO) treatment with TKIs correlated with the benefit (or lack of it) from TKI-plus-chemotherapy combinations. We studied the predictive role of 18F-FMISO-PET for the TKI nintedanib in the neoadjuvant setting in a phase II WoO randomized trial.</p><p><b>Experimental Design:</b> Patients were randomized to a 14-day WoO of nintedanib preceded and followed by an 18F-FMISO-PET, followed by nintedanib plus weekly paclitaxel (Arm A) or an 18F-FMISO-PET followed by weekly paclitaxel (Arm B) before surgery. The endpoint was residual cancer burden (RCB). The objective was to detect the patients with no response (RCB-III) on the basis of the baseline or evolutive 18F-FMISO-PET values/changes.</p><p><b>Results:</b> One-hundred and thirty HER2-negative patients were randomized. Seventeen (27.9%), 34 (55.7%), and 8 (13.1%) patients had an RCB of III, II, and I/0, respectively, in Arm A. In this arm, baseline hypoxic tumors had a 4.4-fold higher chance of experiencing RCB = 3 (<i>P</i> = 0.036) compared with baseline normoxic tumors. Nintedanib WoO induced tumor reoxygenation in 24.5% of the patients; those not reoxygenating showed a trend toward higher chance of experiencing RCB-III (6.4-fold; <i>P</i> = 0.09). In Arm B, 18F-FMISO-PET lacked predictive/prognostic value.</p><p><b>Conclusions:</b> Baseline hypoxic tumors (measured with 18F-FMISO-PET) do not benefit from neoadjuvant nintedanib. <i>Clin Cancer Res; 23(6); 1432–41. ©2016 AACR</i>.</p></div>" @default.
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- W4361945433 date "2023-03-31" @default.
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- W4361945433 title "Data from <sup>18</sup>F-fluoromisonidazole PET and Activity of Neoadjuvant Nintedanib in Early HER2-Negative Breast Cancer: A Window-of-Opportunity Randomized Trial" @default.
- W4361945433 doi "https://doi.org/10.1158/1078-0432.c.6525386" @default.
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