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Gene ALK
Variant T1151dup
Impact List duplication
Protein Effect unknown
Gene Variant Descriptions ALK T1151dup indicates the insertion of the duplicate amino acid, threonine (T)-1151, in the protein kinase domain of the Alk protein (UniProt.org). T1151dup has been demonstrated to occur as a secondary drug resistance mutation in the context of EML4-ALK (PMID: 22277784, PMID: 20695522), but has not been biochemically characterized and therefore, its effect on Alk protein function is unknown (PubMed, Apr 2020).
Associated Drug Resistance Y

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Transcript NM_004304
gDNA chr2:g.29222406_29222408
cDNA c.3451_3453
Protein p.T1151
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_004304 chr2:g.29222406_29222408 c.3451_3453 p.T1151 RefSeq GRCh38/hg38

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  • 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"

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
EML4 - ALK ALK T1151dup Advanced Solid Tumor resistant Crizotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ALK T1151dup in the context of EML4-ALK were resistant to Xalkori (crizotinib) in culture (PMID: 22277784). 22277784
EML4 - ALK ALK T1151dup Advanced Solid Tumor resistant Crizotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ALK T1151dup in the context of EML4-ALK demonstrated reduced sensitivity to Xalkori (crizotinib) compared to cells expressing EML4-ALK in culture (PMID: 27780853). 27780853
EML4 - ALK ALK T1151dup Advanced Solid Tumor sensitive Alectinib Preclinical - Cell line xenograft Actionable In a preclinical study, Alecensa (alectinib) inhibited growth of transformed cells expressing EML4-ALK with ALK T1151dup (referred to as 1151insT) in culture and in xenograft models (PMID: 24887559). 24887559
EML4 - ALK ALK T1151dup Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK T1151dup in the context of EML4-ALK in culture (PMID: 27780853). 27780853
ALK T1151dup ALK G1269A ALK rearrange lung non-small cell carcinoma predicted - resistant Crizotinib Case Reports/Case Series Actionable In a clinical case study, a non-small cell lung carcinoma patient harboring an ALK rearrangement demonstrated a partial response with Xalkori (crizotinib) treatment, but then progressed after 10.8 months, and was found to harbor secondary resistance mutations, ALK T1151dup and ALK G1269A (PMID: 25724526). 25724526
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
ALK mutant lung non-small cell carcinoma no benefit Crizotinib + Onalespib Phase II Actionable In a Phase II trial, Onalespib (AT13387) and Xalkori (crizotinib) combination treatment did not significantly improve median progression free survival (269 vs 266 days) or objective response rate (55.4%, 38/68 vs 45.3%, 31/68) compared to Xalkori (crizotinib) single treatment in patients with non-small cell lung carcinoma harboring either an ALK mutation or ALK rearrangement (J Clin Oncol 34, 2016 (suppl; abstr 9059); NCT01712217). detail...