Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab

Activating RAS mutations occur in more than a half of colorectal cancers (CRCs). RAS-mutated CRCs are notoriously difficult to treat given that they are characterized by the aggressive disease course and the lack of appropriate targeted therapies. Recent preclinical studies demonstrated that RAS-mut...

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Main Authors: Sergey V. Orlov, Magaripa A. Urtenova, Maria A. Sviridenko, Denis V. Nesterov, Tatiana N. Sokolova, Evgeny N. Imyanitov
Format: Article
Language:English
Published: Karger Publishers 2020-08-01
Series:Case Reports in Oncology
Subjects:
Online Access:https://www.karger.com/Article/FullText/509241
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author Sergey V. Orlov
Magaripa A. Urtenova
Maria A. Sviridenko
Denis V. Nesterov
Tatiana N. Sokolova
Evgeny N. Imyanitov
author_facet Sergey V. Orlov
Magaripa A. Urtenova
Maria A. Sviridenko
Denis V. Nesterov
Tatiana N. Sokolova
Evgeny N. Imyanitov
author_sort Sergey V. Orlov
collection DOAJ
description Activating RAS mutations occur in more than a half of colorectal cancers (CRCs). RAS-mutated CRCs are notoriously difficult to treat given that they are characterized by the aggressive disease course and the lack of appropriate targeted therapies. Recent preclinical studies demonstrated that RAS-mutated cells escape from therapeutic MEK inhibition by the development of autophagy, and this escape may be prevented by the administration of an antimalarial drug, hydroxychloroquine. The available clinical data are limited to a single case observation involving a patient with KRAS-mutated pancreatic cancer. Here, we report a woman with KRAS G12D-mutated CRC, whose tumor did not respond to conventional therapy. The combination of binimetinib, hydroxychloroquine, and bevacizumab was administered as a last-hope option. The patient experienced rapid improvement of the performance status. The tumor lumps demonstrated 17% reduction in the size within the first 6 weeks of the therapy. This report calls for evaluation of the efficacy of a combination of MEK inhibitors and hydroxychloroquine, possibly with the addition of bevacizumab, in chemotherapy-resistant patients with RAS-mutated cancers.
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spelling doaj.art-7c1eed8c564649b0b17db2a565354f312022-12-21T23:17:31ZengKarger PublishersCase Reports in Oncology1662-65752020-08-0113298598910.1159/000509241509241Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and BevacizumabSergey V. OrlovMagaripa A. UrtenovaMaria A. SviridenkoDenis V. NesterovTatiana N. SokolovaEvgeny N. ImyanitovActivating RAS mutations occur in more than a half of colorectal cancers (CRCs). RAS-mutated CRCs are notoriously difficult to treat given that they are characterized by the aggressive disease course and the lack of appropriate targeted therapies. Recent preclinical studies demonstrated that RAS-mutated cells escape from therapeutic MEK inhibition by the development of autophagy, and this escape may be prevented by the administration of an antimalarial drug, hydroxychloroquine. The available clinical data are limited to a single case observation involving a patient with KRAS-mutated pancreatic cancer. Here, we report a woman with KRAS G12D-mutated CRC, whose tumor did not respond to conventional therapy. The combination of binimetinib, hydroxychloroquine, and bevacizumab was administered as a last-hope option. The patient experienced rapid improvement of the performance status. The tumor lumps demonstrated 17% reduction in the size within the first 6 weeks of the therapy. This report calls for evaluation of the efficacy of a combination of MEK inhibitors and hydroxychloroquine, possibly with the addition of bevacizumab, in chemotherapy-resistant patients with RAS-mutated cancers.https://www.karger.com/Article/FullText/509241colorectal cancerkras mutationbinimetinibhydroxychloroquinebevacizumab
spellingShingle Sergey V. Orlov
Magaripa A. Urtenova
Maria A. Sviridenko
Denis V. Nesterov
Tatiana N. Sokolova
Evgeny N. Imyanitov
Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab
Case Reports in Oncology
colorectal cancer
kras mutation
binimetinib
hydroxychloroquine
bevacizumab
title Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab
title_full Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab
title_fullStr Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab
title_full_unstemmed Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab
title_short Rapid Improvement of the Performance Status and Reduction of the Tumor Size in KRAS-Mutated Colorectal Cancer Patient Receiving Binimetinib, Hydroxychloroquine, and Bevacizumab
title_sort rapid improvement of the performance status and reduction of the tumor size in kras mutated colorectal cancer patient receiving binimetinib hydroxychloroquine and bevacizumab
topic colorectal cancer
kras mutation
binimetinib
hydroxychloroquine
bevacizumab
url https://www.karger.com/Article/FullText/509241
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