Quantifying Association between Liver Tumor Incidence and Early-stage Liver Weight Increase -- An NTP Data Analysis

In this study, the association between liver weight increase and liver tumor incidence are quantified by (1) calculating the correlation coefficient of and (2) building quantitative linear relationship between benchmark dose estimates derived from these two types of data collected from NTP studies. Together with 151 chemical/species/sex combinations of liver tumor data showing positive evidence collected from 76 NTP long-term studies, short-term liver weight data reported in the same NTP report were extracted to be paired with the liver tumor data for the analyses. Results show that the estimated correlation coefficients (as high as 0.78) along with the adequately fitted linear models suggest that the association between relative liver weight increase and aggregated liver tumor incidence are relatively strong. Additional analyses focused on some more specific situations (e.g., specific tumor type or specific strain/sex combination) further confirmed the strong association. Given the design of this study, the interpretation of the findings is not that liver weight increase can be used to predict liver tumor incidence, instead, evident increase in liver weight might be used as a reason to prioritize the test article for a two-year toxicology and carcinogenesis study.Graphical abstract
Source: Toxicology Reports - Category: Toxicology Source Type: research

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Source: Journal of Clinical Investigation - Category: Biomedical Science Authors: Source Type: research
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Source: Journal of Clinical Investigation - Category: Biomedical Science Authors: Source Type: research
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Source: Journal of Clinical Investigation - Category: Biomedical Science Authors: Source Type: research
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Source: RSC - New J. Chem. latest articles - Category: Chemistry Authors: Source Type: research
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Source: RSC - Chem. Commun. latest articles - Category: Chemistry Authors: Source Type: research
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Publication date: Available online 19 August 2019Source: The American Journal of SurgeryAuthor(s): Katherine Bingmer, Asya Ofshteyn, David Dietz, Sharon L. Stein, Emily SteinhagenAbstractBackgroundImmunosuppressed patients have an increased risk of developing anal cancer, but little data exists regarding outcomes of this population.MethodsA retrospective review of anal cancer patients at a single academic institution from 2006-2017 was performed.Results19 (14%) of 136 anal cancer patients were immunosuppressed. Immunosuppressed patients were more likely to be hypoalbuminemic (21% vs. 6%, p=0.025), less likely to complete c...
Source: The American Journal of Surgery - Category: Surgery Source Type: research
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Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Source: Radiologia Brasileira - Category: Radiology Source Type: research
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Source: Radiologia Brasileira - Category: Radiology Source Type: research
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