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Title: On Biostatistics and Clinical Trials

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 As the field of oncology moves from systemic cytotoxic chemotherapies to targeted agents and immunotherapies, the paradigm for dose selection is undergoing a historic shift. For decades, the Maximum Tolerated Dose (MTD) was the "gold standard" for early-phase trials, but today’s clinical trialists and statisticians are increasingly pri...


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In a previous blog post "Protocol amendment in clinical trials", I discussed the impact of protocol amendments on the clinical trial performance and cost and the reasons for driving the protocol amendments. Protocol amendments are unavoidable, but we can try to think about the study design and execution proactively to minimize the number of protocol amendments. Sometimes, the ex...


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Tipping point analysis (TPA) is a key sensitivity analysis mandated by regulatory agencies like the FDA to assess the


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In the era of highly effective therapies for may diseases, clinical researchers are increasingly encountering a "good" problem in the time to event analyses: the Kaplan-Meier survival curves are flattening out well above the 50% mark. While this represents a triumph for patient outcomes, it creates a headache for statistical reporting. When the event rate is low (below 50%), ...


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