Reference Detail

Contact

Missing content? – Request curation!

Request curation for specific Genes, variants, or PubMed publications.

Have questions, comments or suggestions? - Let us know!

Email us at : ckbsupport@jax.org

Ref Type Journal Article
PMID (31943796)
Authors Takahashi K, Seto Y, Okada K, Uematsu S, Uchibori K, Tsukahara M, Oh-Hara T, Fujita N, Yanagitani N, Nishio M, Okubo K, Katayama R
Title Overcoming resistance by ALK compound mutation (I1171S + G1269A) after sequential treatment of multiple ALK inhibitors in non-small cell lung cancer.
Journal Thoracic cancer
Vol 11
Issue 3
Date 2020 Mar
URL
Abstract Text Anaplastic lymphoma kinase (ALK) fusion genes are found in 3%-5% of non-small cell lung cancers (NSCLCs). ALK inhibitors show a very high response rate to ALK-positive NSCLCs. However, the emergence of acquired resistance is inevitable. In this study, we investigated the drugs for overcoming resistance especially compound mutations after sequential treatment with crizotinib, alectinib, and lorlatinib.Next-generation sequencing (NGS) and Sanger sequencing were performed on a liver biopsy tissue obtained from a clinical case. Ba/F3 cells in which mutant EML4-ALK were overexpressed were prepared, and cell viability assay and immunoblotting were performed to check the sensitivity of five independent ALK inhibitors.I1171S + G1269A double mutation was identified by NGS and Sanger sequencing on a liver biopsy tissue from a patient who relapsed on lorlatinib treatment. Ceritinib and brigatinib-but not other ALK inhibitors-were active against the compound mutations in the cell line model.With the sequential ALK inhibitors treatment, cancer cells accumulate new mutations in addition to mutations acquired previously. The identified compound mutation (I1171S + G1269A) was found to be sensitive to ceritinib and brigatinib, and indeed the patient's tumor partially responded to ceritinib.ALK compound mutation was found in a clinical sample that was resistant to lorlatinib after sequential ALK-tyrosine kinase inhibitor (TKI) treatment. Ceritinib and brigatinib are potential overcoming drugs against ALK I1171S + G1269A double mutation.

Filtering

  • Case insensitive filtering will display rows where any text in any cell matches the filter term
  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (a b c and c b a are equivalent )
  • Filtering will only apply to rows that are already loaded on the page, filtering has no impact on query parameters
  • Use quotes to match a longer phrase which contains spaces "mtor c1483f"

Sorting

  • Generally, the default sort order for tables is set to be first column ascending, however, specific tables may set a different default sort order.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column, be sure to set ascending or descending order for a given column, before moving on to the next column.

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 ALK I1171S ALK G1269A Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) reduced ALK phosphorylation and inhibited growth of transformed cells expressing EML4-ALK with ALK I1171S and ALK G1269A in culture (PMID: 31943796). 31943796
EML4 - ALK ALK I1171S ALK G1269A Advanced Solid Tumor resistant Crizotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing EML4-ALK with ALK I1171S and ALK G1269A demonstrated resistance to Xalkori (crizotinib) treatment in culture (PMID: 31943796). 31943796
EML4 - ALK ALK I1171S Advanced Solid Tumor conflicting Ceritinib Preclinical - Cell culture Actionable In a preclinical study, Zykadia (ceritinib) reduced ALK phosphorylation and inhibited growth of transformed cells expressing EML4-ALK with ALK I1171S in culture (PMID: 31943796). 31943796
EML4 - ALK ALK I1171S ALK G1269A Advanced Solid Tumor resistant Lorlatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing EML4-ALK with ALK I1171S and ALK G1269A demonstrated resistance to Lorbrena (lorlatinib) treatment in culture (PMID: 31943796). 31943796
EML4 - ALK ALK I1171S ALK G1269A Advanced Solid Tumor resistant Alectinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing EML4-ALK with ALK I1171S and ALK G1269A demonstrated resistance to Alecensa (alectinib) treatment in culture (PMID: 31943796). 31943796
EML4 - ALK ALK I1171S Advanced Solid Tumor conflicting Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) reduced ALK phosphorylation and inhibited growth of transformed cells expressing EML4-ALK with ALK I1171S in culture (PMID: 31943796). 31943796
EML4 - ALK ALK I1171S ALK G1269A Advanced Solid Tumor sensitive Ceritinib Preclinical - Cell culture Actionable In a preclinical study, Zykadia (ceritinib) reduced ALK phosphorylation and inhibited growth of transformed cells expressing EML4-ALK with ALK I1171S and ALK G1269A in culture (PMID: 31943796). 31943796