Trial reportClinical and translational science2021
Coproporphyrin I Can Serve as an Endogenous Biomarker for OATP1B1 Inhibition: Assessment Using a Glecaprevir/Pibrentasvir Clinical Study.
Trial report in Clinical and translational science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
What it found
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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.
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.
Who cites it
16 citing papers in PubMed, 28 citations in OpenAlex.
- Endogenous Biomarkers to Evaluate Transporter-Mediated Drug-Drug Interactions: Current Evidence, Impact on Clinical Pharmacology Strategy, Remaining Gaps, and Future Directions.Journal of clinical pharmacology · 2026Review
- Biomarker-Based Prediction of OATP1B1 Activity in Clinical Routine-Investigating Coproporphyrins as Markers for Drug-Drug-Gene Interactions.Clinical pharmacology and therapeutics · 2026Article
- Biomarker-Guided Drug Delivery Systems and Oral Bioavailability Enhancement.Pharmaceuticals (Basel, Switzerland) · 2026Review
- From Discovery to Translation: Endogenous Substrates of OAT1 and OAT3 as Clinical Biomarkers for Renal Secretory Function.Clinical pharmacology and therapeutics · 2025Article
- Organic anion transporting polypeptides: Pharmacology, toxicology, structure, and transport mechanisms.Pharmacological reviews · 2025Review
- Progress of coproporphyrin as an endogenous biomarker for transporter-mediated drug-drug interactions.Frontiers in pharmacology · 2025Review
- Endogenous plasma riboflavin is not a viable BCRP biomarker in human.Clinical and translational science · 2024Article
- Innovative Approaches to Optimize Clinical Transporter Drug-Drug Interaction Studies.Pharmaceutics · 2024Review
- Rifampin- and Silymarin-Mediated Pharmacokinetic Interactions of Exogenous and Endogenous Substrates in a Transgenic OATP1B Mouse Model.Molecular pharmaceutics · 2024Article
- Quantification of OATP1B1 endogenous metabolites coproporphyrin I and III in human urine.Translational and clinical pharmacology · 2023Article
- Article
- Determination of the endogenous OATP1B biomarkers glycochenodeoxycholate-3-sulfate and chenodeoxycholate-24-glucuronide in human and mouse plasma by a validated UHPLC-MS/MS method.Journal of chromatography. B, Analytical technologies in the biomedical and life sciences · 2022Article
- Cluster Gauss-Newton method analyses of PBPK model parameter combinations of coproporphyrin-I based on OATP1B-mediated rifampicin interaction studies.CPT: pharmacometrics & systems pharmacology · 2022Article
- Physiologically-based pharmacokinetic model-based translation of OATP1B-mediated drug-drug interactions from coproporphyrin I to probe drugs.Clinical and translational science · 2022Article
- Effect of Cyclosporin A and Impact of Dose Staggering on OATP1B1/1B3 Endogenous Substrates and Drug Probes for Assessing Clinical Drug Interactions.Clinical pharmacology and therapeutics · 2022Article
- Endogenous Biomarkers for SLC Transporter-Mediated Drug-Drug Interaction Evaluation.Molecules (Basel, Switzerland) · 2021Review
Corrections and comments
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Authors and funding
7 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Organic anion transporting polypeptide (OATP) 1B1 and OATP1B3 are involved in the disposition of a variety of commonly prescribed drugs. The evaluation of OATP1B1/1B3 inhibition potential by investigational drugs is of interest during clinical drug development due to various adverse events associated with increased exposures of their substrates. Regulatory guidance documents on the in vitro assessment of OATP1B1/1B3 inhibition potential are conservative with up to a third of predictions resulting in false positives. This work investigated the utility of OATP1B1/1B3 endogenous biomarkers, coproporphyrin (CP)-I and CP-III, to assess clinical inhibition of OATP1B1/1B3 and potentially eliminate the need for prospective clinical drug-drug interaction (DDI) studies. Correlations between CP-I exposures and various OATP1B1 static DDI predictions were also evaluated. Glecaprevir/pibrentasvir (GLE/PIB) 300/120 mg fixed-dose combination is known to cause clinical inhibition of OATP1B1/1B3. In a clinical study evaluating the relative bioavailability of various formulations of GLE/PIB regimen, CP-I peak plasma concentration (C
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Registered trials
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.