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Table · dataset · 2026

Mapping ToxCast/Tox21 Assay Endpoints to Key Characteristics of Carcinogens to Support Cancer Hazard Evaluation

Listed in ZivaHub and Deakin Research Online and DMU Figshare and HKU DataHub and Swinburne Figshare and DaYta Ya Rona and SUNScholarData and figshare and Loughborough Research Repository and GRANTS Data and UP Research Data Repository — shown once because both records carry DOI 10.1021/ehp.6c00478.s001

The Environmental Protection Agency’s Toxicity Forecaster (ToxCast) and the Toxicity Testing in the 21st Century federal consortium (Tox21) programs provide vast high-throughput screening data on thousands of chemicals, capturing a range of molecular and cellular responses relevant to toxicity.

Description

However, their application to cancer hazard identification requires a structured framework. The ten key characteristics of carcinogens (KCCs) offer a systematic approach for organizing this mechanistic evidence.

We present an updated, comprehensive mapping of 1,570 ToxCast/Tox21 assay endpoints to the KCCs, developed through an expert-driven consensus process. A novel tiering approach was introduced to characterize each assay’s level of mechanistic relevance: Tier A indicates a direct effect linked to a KCC, while Tier B signifies an indirect or downstream effect. Additionally, we incorporated response directionality to correctly identify events contributing to, rather than merely associated with, a KCC.

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Of the 1,570 assay endpoints available in ToxCast/Tox21, 838 assay endpoints (53%) were mapped to the KCCs with some assay endpoints mapping to multiple KCCs. The majority of mapped assay endpoints were associated with KCC8 (modulates receptor-mediated effects) and KCC10 (alters cell proliferation, cell death, or nutrient supply). Some assay endpoints were mapped on different KCCs depending on the directionality of the response.

No assay endpoints were mapped to KCC1 (is electrophilic or can be metabolically activated to electrophiles) or KCC9 (causes immortalization). This publicly available tiered mapping provides a crucial resource for interpreting high-throughput screening data in the context of carcinogenesis. It enables researchers and risk assessors to more systematically utilize such data for cancer hazard evaluation and chemical prioritization.

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Catalogue records · 1

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Astronomy & Astrophysics · Cancer · Cancer · Cancer · Cancer · Cancer · Cancer · Cancer · Cancer · Cancer · Cancer · Cancer · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Chemistry · Computer Science & AI · Computer Science & AI · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Economics & Finance · Economics & Finance · Engineering · Engineering · Engineering · Engineering · Genetics · Genetics · Genetics · Genetics · Genetics · Genetics · Genetics · Genetics · Genetics · Genetics · Genetics · Humanities · Humanities · Humanities · Humanities · Humanities · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Materials Science · Mathematics & Statistics · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Medicine & Health · Ocean & Atmospheric Science · Psychology & Behavioral Science · Psychology & Behavioral Science · Social Science · Social Science · Social Science · Social Science · Social Science
Provenance · 11 source records, 106 field assertions
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ZivaHuboai:figshare.com:article/3403333213 d agoJSON v1
Deakin Research Onlineoai:figshare.com:article/3403333213 d agoJSON v1
DMU Figshareoai:figshare.com:article/3403333213 d agoJSON v1
HKU DataHuboai:figshare.com:article/3403333212 d agoJSON v1
Swinburne Figshareoai:figshare.com:article/3403333212 d agoJSON v1
DaYta Ya Ronaoai:figshare.com:article/3403333212 d agoJSON v1
SUNScholarDataoai:figshare.com:article/3403333212 d agoJSON v1
figshareoai:figshare.com:article/3403333212 d agoJSON v1
Loughborough Research Repositoryoai:figshare.com:article/3403333212 d agoJSON v1
GRANTS Dataoai:figshare.com:article/3403333211 d agoJSON v1
UP Research Data Repositoryoai:figshare.com:article/3403333211 d agoJSON v1
FieldAssertionExtractorEvidence
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concepts[disease].local:disease:cancermapping · dro deakin edu auvocabulary-mapper@1.0.0keywords['Cancer']
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