Reference Detail

Ref Type

Journal Article

PMID

(27350064)

Authors

Scagliotti G, Kang JH, Smith D, Rosenberg R, Park K, Kim SW, Su WC, Boyd TE, Richards DA, Novello S, Hynes SM, Myrand SP, Lin J, Smyth EN, Wijayawardana S, Lin AB, Pinder-Schenck M

Title

Phase II evaluation of LY2603618, a first-generation CHK1 inhibitor, in combination with pemetrexed in patients with advanced or metastatic non-small cell lung cancer.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Investigational new drugs	34	5	2016 Oct	625-35	Invest New Drugs

URL

Abstract Text

Introduction LY2603618 is a selective inhibitor of checkpoint kinase 1 (CHK1) protein kinase, a key regulator of the DNA damage checkpoint, and is predicted to enhance the effects of antimetabolites, such as pemetrexed. This phase II trial assessed the overall response rate, safety, and pharmacokinetics (PK) of LY2603618 and pemetrexed in patients with non-small cell lung cancer (NSCLC). Methods In this open-label, single-arm trial, patients with advanced or metastatic NSCLC progressing after a prior first-line treatment regimen (not containing pemetrexed) and Eastern Cooperative Oncology Group performance status ≤2 received pemetrexed (500 mg/m(2), day 1) and LY2603618 (150 mg/m(2), day 2) every 21 days until disease progression. Safety was assessed using Common Terminology Criteria for Adverse Events v3.0. Serial blood samples were collected for PK analysis after LY2603618 and pemetrexed administration. Expression of p53, as measured by immunohistochemistry and genetic variant analysis, was assessed as a predictive biomarker of response. Results Fifty-five patients were enrolled in the study. No patients experienced a complete response; a partial response was observed in 5 patients (9.1 %; 90 % CI, 3.7-18.2) and stable disease in 20 patients (36.4 %). The median progression-free survival was 2.3 months (range, 0-27.1). Safety and PK of LY2603618 in combination with pemetrexed were favorable. No association between p53 status and response was observed. Conclusions There was no significant clinical activity of LY2603618 and pemetrexed combination therapy in patients with advanced NSCLC. The results were comparable with historical pemetrexed single-agent data, with similar safety and PK profiles being observed.

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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