There is growing evidence that single substances present below their individual thresholds of effect may still contribute to combined effects. Here, the possible use of ecotoxicological threshold concentrations of no concern (i.e. 5th percentile of statistical distribution of ecotoxicological values) is investigated to fill data gaps in MRA.
Genotoxicity testing is an essential component of the safety assessment paradigm required by regulatory agencies world-wide for analysis of drug candidates, and environmental and industrial chemicals. Current genotoxicity testing batteries feature a high incidence of irrelevant positive findings – particularly for in vitro chromosomal damage (CD) assays. Thus, regulators are urgently in need of new testing approaches to meet legislated mandates. Using machine learning, we identified a set of transcripts that responds predictably to DNA-damage in human cells that we refer to as the TGx-DDI biomarker, which was originally referred to as TGx-28.65.
With increasing survival rates, a growing population of patients with cancer have received or will receive adjuvant therapy to prevent cancer recurrences. Patients and caregivers will confront the complexities of balancing the preventative benefits of adjuvant therapy with possible near‐term or long‐term adverse events (AEs). However, to the authors’ knowledge, limited information is available regarding how stakeholders use or desire to use adjuvant‐related AE information to inform the care of patients with cancer.
Multiple modes of action (MOA) frameworks have been developed in aquatic ecotoxicology, mainly based on fish toxicity. These frameworks provide information on a key determinant of chemical toxicity, but the MOA categories and level of specificity remain unique to each of the classification schemes. This study aimed to develop a consensus MOA assignment within EnviroTox (https://envirotoxdatabase.org/), a curated in vivo aquatic toxicity database, based on the following MOA classification schemes: Verhaar (modified) framework, ASTER, TEST, and OASIS.
A new method published as a book chapter for sampling cerebrospinal fluid in rat. (eds) Cell Culture Techniques. Neuromethods, vol 145. Humana, New York, NY