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2020 Fiscal Year Final Research Report

Prediction of lamotrigine clearance by using endogenous compounds as biomarker

Research Project

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Project/Area Number 18K06748
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47060:Clinical pharmacy-related
Research InstitutionOkayama University

Principal Investigator

Fujiyoshi Masachika  岡山大学, 医歯薬学総合研究科, 准教授 (50751921)

Co-Investigator(Kenkyū-buntansha) 有吉 範高  岡山大学, 医歯薬学総合研究科, 教授 (00243957)
松本 准  岡山大学, 医歯薬学総合研究科, 助教 (60709012)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsラモトリギン / バイオマーカー / 個別化医療 / てんかん / LC-MS/MS
Outline of Final Research Achievements

Lamotrigine is one of widely used anti-epileptic drugs, but it has a critical issue of a skin rush. The present study was performed to develop a method for the prediction of lamotrigine clearance. We developed a method for quantitation of 25-hydroxyvitamin D3 (25-OH-VD), an endogenous substrate for UGT1A4, and 25-hydroxyvitamin D3 3-glucuronide (25-OH-VD-glu). The ratio between the blood concentration of 25-OH-VD and 25-OH-VD-glu was correlated with lamotrigine clearance, suggesting the ratio might be a useful biomarker for prediction of lamotrigine clearance.

Free Research Field

医療薬学

Academic Significance and Societal Importance of the Research Achievements

抗てんかん薬ラモトリギンによる皮膚障害は、死亡例も報告された重篤なものである。また、皮膚障害は蓄積毒性ではなく、単回服用でも出現する場合があり、ラモトリギンを服用する前に患者個々に投与量を適正化できる方法論の構築が必要である。本研究は、ラモトリギンクリアランスを薬剤を投与することなく予測できる方法論を提唱したものであり、ラモトリギンの適正使用推進につながると考えられる。

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Published: 2022-01-27  

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