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Duration of overall response The duration of overall response is measured from the time measurement criteria are met for CR or PR (whichever status is recorded first) until the first date that recurrence or PD is objectively documented, taking as reference for PD the smallest measurements recorded since the treatment started.
The immune-related response criteria, first published in 2009, [1] arose out of observations that immuno-oncology drugs would fail in clinical trials that measured responses using the WHO or RECIST Criteria, because these criteria could not account for the time gap in many patients between initial treatment and the apparent action of the immune ...
Progression-free survival (PFS) is "the length of time during and after the treatment of a disease, such as cancer, that a patient lives with the disease but it does not get worse". [1] In oncology, PFS usually refers to situations in which a tumor is present, as demonstrated by laboratory testing, radiologic testing, or clinically. Similarly ...
The concept is used in cancer survival analyses. [citation needed] Many cancer studies aim to assess the time between two events of interest, such as from treatment to remission, treatment to relapse, or diagnosis to death. This duration is generically called survival time, even if the end point is not death. [1]
PET response criteria in solid tumors (PERCIST) is a set of rules that define when tumors in cancer patients improve ("respond"), stay the same ("stabilize"), or worsen ("progress") during treatment, using positron emission tomography (PET). The criteria were published in May 2009 in the Journal of Nuclear Medicine (JNM). [1]
The rate of cancer recurrence is determined by many factors, including age, sex, cancer type, treatment duration, stage of advancement, grade of original tumor, and cancer-specific risk factors. [2] [3] [4] If recurrent cancer has already moved to other body parts or has developed chemo-resistance then it may be more aggressive than original ...
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Lead time is the duration of time between the detection of a disease (by screening or based on new experimental criteria) and its usual clinical presentation and diagnosis (based on traditional criteria). [1] For example, it is the time between early detection by screening and the time when diagnosis would have been made clinically (without ...