Trends in Phase II Trials for Cancer Therapies

<i>Background</i>: Drug combinations are the standard of care in cancer treatment. Identifying effective cancer drug combinations has become more challenging because of the increasing number of drugs. However, a substantial number of cancer drugs stumble at Phase III clinical trials desp...

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Main Authors: Faruque Azam, Alexei Vazquez
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/13/2/178
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author Faruque Azam
Alexei Vazquez
author_facet Faruque Azam
Alexei Vazquez
author_sort Faruque Azam
collection DOAJ
description <i>Background</i>: Drug combinations are the standard of care in cancer treatment. Identifying effective cancer drug combinations has become more challenging because of the increasing number of drugs. However, a substantial number of cancer drugs stumble at Phase III clinical trials despite exhibiting favourable efficacy in the earlier Phase. <i>Methods</i>: We analysed recent Phase II cancer trials comprising 2165 response rates to uncover trends in cancer therapies and used a null model of non-interacting agents to infer synergistic and antagonistic drug combinations. We compared our latest efficacy dataset with a previous dataset to assess the progress of cancer therapy. <i>Results</i>: Targeted therapies reach higher response rates when used in combination with cytotoxic drugs. We identify four synergistic and 10 antagonistic combinations based on the observed and expected response rates. We demonstrate that recent targeted agents have not significantly increased the response rates. <i>Conclusions</i>: We conclude that either we are not making progress or response rate measured by tumour shrinkage is not a reliable surrogate endpoint for the targeted agents.
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spelling doaj.art-ee4fc86061d34c2a85f7477bea4c32782023-12-03T12:18:04ZengMDPI AGCancers2072-66942021-01-0113217810.3390/cancers13020178Trends in Phase II Trials for Cancer TherapiesFaruque Azam0Alexei Vazquez1Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UKWolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK<i>Background</i>: Drug combinations are the standard of care in cancer treatment. Identifying effective cancer drug combinations has become more challenging because of the increasing number of drugs. However, a substantial number of cancer drugs stumble at Phase III clinical trials despite exhibiting favourable efficacy in the earlier Phase. <i>Methods</i>: We analysed recent Phase II cancer trials comprising 2165 response rates to uncover trends in cancer therapies and used a null model of non-interacting agents to infer synergistic and antagonistic drug combinations. We compared our latest efficacy dataset with a previous dataset to assess the progress of cancer therapy. <i>Results</i>: Targeted therapies reach higher response rates when used in combination with cytotoxic drugs. We identify four synergistic and 10 antagonistic combinations based on the observed and expected response rates. We demonstrate that recent targeted agents have not significantly increased the response rates. <i>Conclusions</i>: We conclude that either we are not making progress or response rate measured by tumour shrinkage is not a reliable surrogate endpoint for the targeted agents.https://www.mdpi.com/2072-6694/13/2/178canceroverall response rateclinical trialsPhase IIdrug combinations
spellingShingle Faruque Azam
Alexei Vazquez
Trends in Phase II Trials for Cancer Therapies
Cancers
cancer
overall response rate
clinical trials
Phase II
drug combinations
title Trends in Phase II Trials for Cancer Therapies
title_full Trends in Phase II Trials for Cancer Therapies
title_fullStr Trends in Phase II Trials for Cancer Therapies
title_full_unstemmed Trends in Phase II Trials for Cancer Therapies
title_short Trends in Phase II Trials for Cancer Therapies
title_sort trends in phase ii trials for cancer therapies
topic cancer
overall response rate
clinical trials
Phase II
drug combinations
url https://www.mdpi.com/2072-6694/13/2/178
work_keys_str_mv AT faruqueazam trendsinphaseiitrialsforcancertherapies
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