Title : The Possible Mechanism of Idiosyncratic Lapatinib-Induced Liver Injury in Patients Carrying Human Leukocyte Antigen-DRB1*07:01.

Pub. Date : 2015

PMID : 26098642






5 Functional Relationships(s)
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1 Idiosyncratic lapatinib-induced liver injury has been reported to be associated with human leukocyte antigen (HLA)-DRB1*07:01. Lapatinib major histocompatibility complex, class II, DR beta 1 Homo sapiens
2 In order to investigate its mechanism, interaction of lapatinib with HLA-DRB1*07:01 and its ligand peptide derived from tetanus toxoid, has been evaluated in vitro. Lapatinib major histocompatibility complex, class II, DR beta 1 Homo sapiens
3 Here we show that lapatinib enhances binding of the ligand peptide to HLA-DRB1*07:01. Lapatinib major histocompatibility complex, class II, DR beta 1 Homo sapiens
4 Furthermore in silico molecular dynamics analysis revealed that lapatinib could change the beta chain helix in the HLA-DRB1*07:01 specifically to form a tightly closed binding groove structure and modify a large part of the binding groove. Lapatinib major histocompatibility complex, class II, DR beta 1 Homo sapiens
5 These results indicate that lapatinib affects the ligand binding to HLA-DRB1*07:01 and idiosyncratic lapatinib-induced liver injury might be triggered by this mechanism. Lapatinib major histocompatibility complex, class II, DR beta 1 Homo sapiens