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Spotlight on landmark oncology trials: the latest evidence and novel trial designs.

ABSTRACT: The era of precision oncology is marked with prominent successes in the therapy of advanced soft tissue sarcomas, breast cancer, ovarian cancer and haematological neoplasms, among others. Moreover, recent trials of immune checkpoint inhibitors in melanoma, non-small cell lung carcinoma, and head and neck cancers have significantly influenced the therapeutic landscape by providing promising evidence for immunotherapy efficacy in the adjuvant setting in high-risk locoregional disease. To speed up the introduction of targeted therapy for cancer patients, novel phase II trials are being designed, and may likely form the basis for the 'landmark trials' of the future. A special article collection in BMC Medicine, "Spotlight on landmark oncology trials", features articles from invited experts on recent clinical practice-changing trials.

SUBMITTER: Earl H

PROVIDER: S-EPMC5454584 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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Spotlight on landmark oncology trials: the latest evidence and novel trial designs.

Earl Helena H Molica Stefano S Rutkowski Piotr P

BMC medicine 20170602 1

The era of precision oncology is marked with prominent successes in the therapy of advanced soft tissue sarcomas, breast cancer, ovarian cancer and haematological neoplasms, among others. Moreover, recent trials of immune checkpoint inhibitors in melanoma, non-small cell lung carcinoma, and head and neck cancers have significantly influenced the therapeutic landscape by providing promising evidence for immunotherapy efficacy in the adjuvant setting in high-risk locoregional disease. To speed up ...[more]

PMID: 28571584

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Project description:BackgroundKnowledge of treatment assignment may affect patient-reported outcomes (PROs), which is of concern in oncology, where open-label trials are common. This study measured the magnitude of open-label bias by comparing PROs for similar patient groups in oncology trials with different degrees of concealment.MethodsIndividual patient data from ipilimumab arms of 2 melanoma and docetaxel arms of 2 non-small cell lung cancer (NSCLC) trials were adjusted for differences using propensity score weighting. Patients were aware of treatment assignment in CA184-022 and CheckMate 057 (open-label) but not in MDX010-20 and VITAL (blinded). Overall survival (OS) and mean changes from baseline to week 12 in the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (melanoma) and Lung Cancer Symptom Scale (NSCLC) scores were compared between open-label and blinded groups.ResultsAfter adjustment, baseline characteristics were balanced between blinded (melanoma, n = 125; NSCLC, n = 424) and open-label (melanoma, n = 69; NSCLC, n = 205) groups. Study discontinuation and PRO completion rates at week 12 and OS were similar. There was no clear direction in differences in change scores between groups. In the melanoma trials, role functioning (mean = -5.2, 95% confidence interval [CI] = -15.4 to 5.0), global health status (mean = -1.3, 95% CI = -8.7 to 6.1), and pain (mean = 6.2 , 95% CI = -1.8 to 14.2) favored the blinded, whereas emotional functioning (mean = 2.2, 95% CI = -5.8 to 10.2) and diarrhea (mean = -8.3, 95% CI = -17.3 to 0.7) favored the open-label group. In the NSCLC trials, changes in dyspnea (mean = 5.4, 95% CI = -0.7 to 11.5) favored the blinded and changes in appetite (mean = -1.2, 95% CI = -8.1 to 5.7) favored the open-label group. None were clinically or statistically significant.ConclusionsThis study adds to the growing evidence demonstrating that concerns regarding open-label bias should not prohibit the interpretation of large and meaningful treatment effects on PROs.

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Spotlight on landmark oncology trials: the latest evidence and novel trial designs.

Publications

Spotlight on landmark oncology trials: the latest evidence and novel trial designs.

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