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Abstract #4015

Measurement of liver function with dynamic gadoxetate-enhanced MRI: a validation study in healthy volunteers

Thazin Min1, Marta Tibiletti2, Paul Hockings3, Aleksandra Galetin4, Ebony Gunwhy5, Gerry Kenna2, Nicola Melillo4, Geoff JM Parker2,6, Gunnar Schuetz7, Daniel Scotcher4, John Waterton2,4, Ian Rowe1, and Steven Sourbron5
1University of Leeds, Leeds, United Kingdom, 2Bioxydyn Ltd, Manchester, United Kingdom, 3Antaros Medical, Molndal, Sweden, 4University of Manchester, Manchester, United Kingdom, 5University of Sheffield, Sheffield, United Kingdom, 6University College London, London, United Kingdom, 7Bayer AG, Berlin, Germany

Synopsis

Keywords: Liver, Liver, function

Motivation: Interaction of drugs via inhibition of liver function affects their toxicity and efficacy, but this is currently difficult to assess clinically.

Goal(s): To determine if a DCE-MRI measurement of liver function is sufficiently sensitive to detect drug-induced inhibition of liver function in humans.

Approach: 10 healthy volunteers underwent a DCE-MRI measurement of their baseline liver function. The measurement was repeated on a second day after administration of rifampicin, a powerful inhibitor of liver function.

Results: Rifampicin reduced the hepatocellular uptake rate by 93%, and the effect was consistent between volunteers. The biliary excretion rate reduced by 48% and the effect was more variable.

Impact: Early clinical assessment of drug-drug interactions can significantly reduce the risk of expensive late-stage failures in drug development, potentially increasing the rate at which new drugs can enter the market, and reducing the risk to trial subjects and patients.

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