The sample size of 55 participants was appropriate to detect a large effect of the pivotal predictors of hypochondriacal attitudes in a multiple regression analysis with a power of about.8 [ 34].
Accordingly, knowing the correct ranking of importance of predictors is pivotal to effectively contribute to species and ecosystems conservation.
However, as the retrospective synopsis is clearly limited, the pivotal questions of whether EBCC can serve as predictor for the development of typical or atypical disease and whether EBCC is a useful addition to imaging techniques in establishing an early differential diagnosis are unanswered yet and require further prospective investigation.
In the program described herein, this validation is formal statistical validation, beginning with the randomized PoC trial, and continuing, if indicated by the data, through to a phase 3 pivotal trial that definitively validates the biomarker classifier as a predictor of clinical benefit.
Cognitive performance has been shown to be pivotal for persons' daily activities and its deterioration is considered an important predictor of dementia and a close correlate of worsening health in general [ 8, 11- 14].
The publication by Finn and colleagues [ 1] is pivotal in this context as it addresses this need by investigating predictors of response to the CDK4/6-specific inhibitor PD 0332991 in a panel of 41 immortalised breast epithelial and breast cancer cell lines representative of the major subtypes of breast cancer.
Further analysis of the pivotal National Surgical Adjuvant Breast and Bowel Project B06 trial showed that local recurrence was a strong predictor of reduced survival, but it seemed to act as a marker for unfavourable disease rather than as a source for the development of metastases [ 10].
Both preclinical and clinical research will be pivotal in clarifying the validity of this new subtype of MD, in improving predictors for treatment response, and in providing a better basis for genetic studies, as well as in stimulating new drug discovery processes.
One of the pivotal advancements in breast cancer research was the identification of HER2 overexpression as a significant predictor of both disease-free survival (DFS) and overall survival (OS) in breast cancer patients by Slamon et al. in 1987 [ 1].
Due to the inherent biological perspective underlying the STRID concept, both preclinical and clinical research will be pivotal in clarifying the validity of this new subtype of MD and in improving predictors for treatment response, and will provide a better basis for genetic studies as well as stimulating new drug discovery programs.
