Evidence map›Paper›PMID 32278033›Full record

ArticleToxicology in vitro : an international journal published in association with BIBRA2020

Application of a combined aggregate exposure pathway and adverse outcome pathway (AEP-AOP) approach to inform a cumulative risk assessment: A case study with phthalates.

Rebecca A Clewell, Jeremy A Leonard, Chantel I Nicolas, Jerry L Campbell, Miyoung Yoon, Alina Y Efremenko, Patrick D McMullen, Melvin E Andersen, Harvey J Clewell, Katherine A Phillips and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Toxicology in vitro : an international journal published in association with BIBRA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 35 citations in OpenAlex.

  1. Review
  2. Article
  3. Adverse Outcome Pathways Mechanistically Describing Hepatotoxicity.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  4. Review
  5. Review
  6. Review
  7. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 1 country.

Rebecca A ClewellScitoVation, LLC, Research Triangle Park, NC 27709, USA; 21st Century Tox Consulting, LLC, Chapel Hill, NC 27516, USA.
Jeremy A LeonardOak Ridge Institute for Science and Education, Oak Ridge, TN 37831, USA.
Chantel I NicolasScitoVation, LLC, Durham, NC 27713, USA.
Jerry L CampbellRamboll, Raleigh, NC 27612, USA.
Miyoung YoonScitoVation, LLC, Research Triangle Park, NC 27709, USA; ToxStrategies, Inc., Cary, NC 27511, USA.
Alina Y EfremenkoScitoVation, LLC, Research Triangle Park, NC 27709, USA.
Patrick D McMullenScitoVation, LLC, Durham, NC 27713, USA. Electronic address: pmcmullen@scitovation.com.
Melvin E AndersenScitoVation, LLC, Durham, NC 27713, USA.
Harvey J ClewellScitoVation, LLC, Research Triangle Park, NC 27709, USA; Ramboll, Raleigh, NC 27612, USA.
Katherine A PhillipsNational Exposure Research Laboratory, Office of Research and Development, US EPA, Research Triangle Park, NC 27711, USA.
Yu-Mei TanNational Exposure Research Laboratory, Office of Research and Development, US EPA, Research Triangle Park, NC 27711, USA.
Triangle · USEnvironmental Protection Agency · USENVIRON (United States) · USOak Ridge Institute for Science and Education

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

Advancements in measurement and modeling capabilities are providing unprecedented access to estimates of chemical exposure and bioactivity. With this influx of new data, there is a need for frameworks that help organize and disseminate information on chemical hazard and exposure in a manner that is accessible and transparent. A case study approach was used to demonstrate integration of the Adverse Outcome Pathway (AOP) and Aggregate Exposure Pathway (AEP) frameworks to support cumulative risk assessment of co-exposure to two phthalate esters that are ubiquitous in the environment and that are associated with disruption of male sexual development in the rat: di(2-ethylhexyl) phthalate (DEHP) and di-n-butyl phthalate (DnBP). A putative AOP was developed to guide selection of an in vitro assay for derivation of bioactivity values for DEHP and DnBP and their metabolites. AEPs for DEHP and DnBP were used to extract key exposure data as inputs for a physiologically based pharmacokinetic (PBPK) model to predict internal metabolite concentrations. These metabolite concentrations were then combined using in vitro-based relative potency factors for comparison with an internal dose metric, resulting in an estimated margin of safety of ~13,000. This case study provides an adaptable workflow for integrating exposure and toxicity data by coupling AEP and AOP frameworks and using in vitro and in silico methodologies for cumulative risk assessment.

Indexed as

Dibutyl PhthalateDiethylhexyl PhthalateEnvironmental PollutantsModels, BiologicalAdverse Outcome PathwaysAnimalsEnvironmental ExposureHumansMaleRatsSexual DevelopmentDibutyl PhthalateDiethylhexyl PhthalateEnvironmental PollutantsDEHPDnBPEnvironmental chemicalsHigh throughput

Identifiers

PMID32278033
PMCPMC8204916
OpenAlexW3015896500

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.