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|Ref Type||Journal Article|
|Authors||Jo H, Yagishita S, Hayashi Y, Ryu S, Suzuki M, Kohsaka S, Ueno T, Matsumoto Y, Horinouchi H, Ohe Y, Watanabe SI, Motoi N, Yatabe Y, Mano H, Takahashi K, Hamada A|
|Title||Comparative Study on the Efficacy and Exposure of Molecular Target Agents in Non-small Cell Lung Cancer PDX Models with Driver Genetic Alterations.|
|Journal||Molecular cancer therapeutics|
|Abstract Text||Patient-derived xenografts (PDX) can adequately reflect clinical drug efficacy. However, the methods for evaluating drug efficacy are not fully established. We selected five non-small cell lung cancer (NSCLC) PDXs with genetic alterations from established PDXs and the corresponding molecular targeted therapy was administered orally for 21 consecutive days. Genetic analysis, measurement of drug concentrations in blood and tumors using LC/MS-MS, and analysis of drug distribution in tumors using matrix-assisted laser desorption/ionization mass spectrometry were performed. Fifteen (20%) PDXs were established using samples collected from 76 patients with NSCLC with genetic alterations. The genetic alterations observed in original patients were largely maintained in PDXs. We compared the drug efficacy in original patients and PDX models; the efficacies against certain PDXs correlated with the clinical effects, while those against the others did not. We determined blood and intratumor concentrations in the PDX model, but both concentrations were low, and no evident correlation with the drug efficacy could be observed. The intratumoral spatial distribution of the drugs was both homogeneous and heterogeneous for each drug, and the distribution was independent of the expression of the target protein. The evaluation of drug efficacy in PDXs enabled partial reproduction of the therapeutic effect in original patients. A more detailed analysis of systemic and intratumoral pharmacokinetics may help clarify the mode of action of drugs. Further development of evaluation methods and indices to improve the prediction accuracy of clinical efficacy is warranted.|
|Molecular Profile||Treatment Approach|
|Gene Name||Source||Synonyms||Protein Domains||Gene Description||Gene Role|
|Therapy Name||Drugs||Efficacy Evidence||Clinical Trials|
|Drug Name||Trade Name||Synonyms||Drug Classes||Drug Description|
|Gene||Variant||Impact||Protein Effect||Variant Description||Associated with drug Resistance|
|Molecular Profile||Indication/Tumor Type||Response Type||Therapy Name||Approval Status||Evidence Type||Efficacy Evidence||References|
|EML4 - ALK||lung adenocarcinoma||sensitive||Lorlatinib||Preclinical - Pdx||Actionable||In a preclinical study, Lorbrena (lorlatinib) treatment decreased tumor growth in a patient-derived xenograft (PDX) model of lung adenocarcinoma harboring EML4-ALK (PMID: 34911818).||34911818|
|EML4 - ALK||lung adenocarcinoma||sensitive||Brigatinib||Preclinical - Pdx||Actionable||In a preclinical study, Alunbrig (brigatinib) treatment decreased tumor growth in a patient-derived xenograft (PDX) model of lung adenocarcinoma harboring EML4-ALK (PMID: 34911818).||34911818|
|EML4 - ALK||lung adenocarcinoma||predicted - sensitive||Ceritinib||Case Reports/Case Series||Actionable||In a clinical case study, Zykadia (ceritinib) treatment resulted in a partial response lasting 8.7 months in a patient with lung adenocarcinoma harboring EML4-ALK, who progressed on prior Alecensa (alectinib) treatment (PMID: 34911818).||34911818|
|EML4 - ALK||lung adenocarcinoma||predicted - sensitive||Alectinib||Case Reports/Case Series||Actionable||In a clinical case study, Alecensa (alectinib) treatment resulted in a partial response lasting 17.5 months in a patient with lung adenocarcinoma harboring EML4-ALK (PMID: 34911818).||34911818|