Evidence map›Paper›PMID 27310493›Full record

ArticleCPT: pharmacometrics & systems pharmacology2016

Unraveling the pharmacokinetic interaction of ticagrelor and MEDI2452 (Ticagrelor antidote) by mathematical modeling.

J Almquist, M Penney, S Pehrsson, A-S Sandinge, A Janefeldt, S Maqbool, S Madalli, J Goodman, S Nylander, P Gennemark

Abstract readValidation Study
In one paragraph

Article in CPT: pharmacometrics & systems pharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
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

10 authors.

J AlmquistFraunhofer-Chalmers Centre, Chalmers Science Park, Gothenburg, Sweden.
M PenneyClinical Pharmacology and DMPK, MedImmune, Cambridge, UK.
S PehrssonCardiovascular and Metabolic Diseases, Innovative Medicines, AstraZeneca R&D, Mölndal, Sweden.
A-S SandingeCardiovascular and Metabolic Diseases, Innovative Medicines, AstraZeneca R&D, Mölndal, Sweden.
A JanefeldtCardiovascular and Metabolic Diseases, Innovative Medicines, AstraZeneca R&D, Mölndal, Sweden.
S MaqboolClinical Pharmacology and DMPK, MedImmune, Cambridge, UK.
S MadalliCardiovascular and Metabolic Diseases Research, MedImmune, Cambridge, UK.
J GoodmanClinical Pharmacology and DMPK, MedImmune, Cambridge, UK.
S NylanderCardiovascular and Metabolic Diseases, Innovative Medicines, AstraZeneca R&D, Mölndal, Sweden.
P GennemarkCardiovascular and Metabolic Diseases, Innovative Medicines, AstraZeneca R&D, Mölndal, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The investigational ticagrelor-neutralizing antibody fragment, MEDI2452, is developed to rapidly and specifically reverse the antiplatelet effects of ticagrelor. However, the dynamic interaction of ticagrelor, the ticagrelor active metabolite (TAM), and MEDI2452, makes pharmacokinetic (PK) analysis nontrivial and mathematical modeling becomes essential to unravel the complex behavior of this system. We propose a mechanistic PK model, including a special observation model for post-sampling equilibration, which is validated and refined using mouse in vivo data from four studies of combined ticagrelor-MEDI2452 treatment. Model predictions of free ticagrelor and TAM plasma concentrations are subsequently used to drive a pharmacodynamic (PD) model that successfully describes platelet aggregation data. Furthermore, the model indicates that MEDI2452-bound ticagrelor is primarily eliminated together with MEDI2452 in the kidneys, and not recycled to the plasma, thereby providing a possible scenario for the extrapolation to humans. We anticipate the modeling work to improve PK and PD understanding, experimental design, and translational confidence.

Indexed as

Models, TheoreticalAdenosineAnimalsAntibodies, NeutralizingAntidotesBroadly Neutralizing AntibodiesDrug InteractionsMaleMiceMice, Inbred C57BLPlatelet AggregationPurinergic P2Y Receptor AntagonistsRatsRats, Sprague-DawleySpecies SpecificityTicagrelorAdenosineAntibodies, NeutralizingAntidotesBroadly Neutralizing AntibodiesPB-2452Purinergic P2Y Receptor AntagonistsTicagrelor

Identifiers

PMID27310493
PMCPMC5131888

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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.