Gene Variant Detail

Gene ALK
Variant I1171T
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions ALK I1171T lies within the protein kinase domain of the Alk protein (UniProt.org). I1171T confers a gain of function on the Alk protein as indicated by ligand-independent autophosphorylation, activation of Erk1/2, and cell transformation (PMID: 29907598), and has been demonstrated to confer drug resistance in the context of ALK fusions in culture (PMID: 27009859).
Associated Drug Resistance Y

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Transcript NM_004304
gDNA chr2:g.29222347A>G
cDNA c.3512T>C
Protein p.I1171T
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_004304 chr2:g.29222347A>G c.3512T>C p.I1171T 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 I1171T Advanced Solid Tumor conflicting Alectinib Preclinical - Cell culture Actionable In a preclinical study, a transformed cell line expressing EML4-ALK with ALK I1171T was resistant to Alecensa (alectinib) treatment in culture (PMID: 25228534), however, another study with comparable cells demonstrated sensitivity in culture (PMID: 27432227). 25228534 27432227
EML4-ALK ALK I1171T Advanced Solid Tumor sensitive TAE684 Preclinical - Cell culture Actionable In a preclinical study, TAE684 inhibited growth of a transformed cell line expressing EML4-ALK ALK I1171T in culture (PMID: 25228534). 25228534
EML4-ALK ALK I1171T Advanced Solid Tumor resistant ASP3026 Preclinical - Cell culture Actionable In a preclinical study, a transformed cell line expressing EML4-ALK with ALK I1171T was resistant to ASP3026 treatment in culture (PMID: 25228534). 25228534
EML4-ALK ALK I1171T Advanced Solid Tumor decreased response Crizotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing EML4-ALK and ALK I1171T demonstrated a decreased response to treatment with Xalkori (crizotinib) compared to cells expressing EML4-ALK in culture (PMID: 27432227). 27432227
EML4-ALK ALK I1171T Advanced Solid Tumor decreased response Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of a transformed cell line expressing ALK I1171T in the context of EML4-ALK but to a lesser degree than cells expressing EML4-ALK in culture (PMID: 25228534). 25228534
EML4-ALK ALK I1171T Advanced Solid Tumor sensitive Ceritinib Preclinical - Cell culture Actionable In a preclinical study, Zykadia (ceritinib) inhibited growth of a transformed cell line expressing EML4-ALK with ALK I1171T in culture (PMID: 25228534). 25228534
EML4-ALK ALK I1171T lung non-small cell carcinoma sensitive Lorlatinib Preclinical - Patient cell culture Actionable In a preclinical study, Lorlatinib (PF-06463922) inhibited Alk phosphorylation and cell growth in patient derived non-small cell lung cancer cells harboring ALK I1171T in the context of EML4-ALK in culture (PMID: 26144315). 26144315
EML4-ALK ALK I1171T lung non-small cell carcinoma predicted - resistant Crizotinib Case Reports/Case Series Actionable In a clinical case study, a patient with non-small cell lung carcinoma harboring EML4-ALK demonstrated a partial response with Xalkori (crizotinib) treatment, but after eight months showed progression, and was found to harbor a secondary resistance mutation, ALK I1171T (PMID: 25393798). 25393798
EML4-ALK ALK I1171T Advanced Solid Tumor sensitive Lorlatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing EML4-ALK and ALK I1171T demonstrated sensitivity to treatment with Lorlatinib (PF-06463922) in culture (PMID: 27432227). 27432227
EML4-ALK ALK C1156Y ALK I1171T Advanced Solid Tumor resistant Lorlatinib Preclinical - Cell culture Actionable In a preclinical study, ALK I1171T was identified as a compound mutation in transformed cells expressing ALK C1156Y in the context of EML4-ALK that acquired resistance to Lorlatinib (PF-06463922) in culture (PMID: 29650534). 29650534
EML4-ALK ALK G1269A ALK I1171T Advanced Solid Tumor resistant Lorlatinib Preclinical - Cell culture Actionable In a preclinical study, ALK I1171T was identified as a compound mutation in transformed cells expressing ALK G1269A in the context of EML4-ALK that acquired resistance to Lorlatinib (PF-06463922) in culture (PMID: 29650534). 29650534
ALK rearrange ALK I1171T lung adenocarcinoma resistant Alectinib Case Reports/Case Series Actionable In a clinical case study, a patient with a lung adenocarcinoma tumor harboring an ALK rearrangement with ALK I1171T progressed on Alecensa (alectinib) therapy after 4 months and resistance was confirmed using cell culture with cells derived from the patient’s tumor (PMID: 25228534). 25228534
ALK rearrange ALK I1171T lung adenocarcinoma resistant Crizotinib Case Reports/Case Series Actionable In a clinical case study, a patient with a lung adenocarcinoma tumor harboring an ALK rearrangement with ALK I1171T progressed on Xalkori (crizotinib) therapy after 8 months and resistance was confirmed using cell culture with cells derived from the patient's tumor (PMID: 25228534). 25228534
ALK rearrange ALK I1171T lung non-small cell carcinoma predicted - resistant Alectinib Case Reports/Case Series Actionable In a clinical case study, ALK I1171T was identified in the post-progression biopsy of a non-small cell lung cancer patient harboring an ALK rearrangement after Alecensa (alectinib) treatment (PMID: 29935304). 29935304
ALK rearrange ALK I1171T lung non-small cell carcinoma predicted - resistant Brigatinib Case Reports/Case Series Actionable In a clinical case study, Alunbrig (brigatinib) treatment resulted in progressive disease in a patient with Alecensa (alectinib)-refractory, ALK-rearranged non-small cell lung cancer with an acquired ALK I1171T (PMID: 29935304). 29935304
ALK I1171T ganglioneuroblastoma predicted - sensitive Ceritinib Case Reports/Case Series Actionable In a clinical case study, Zykadia (ceritinib) treatment resulted in a 43.6% decrease of the primary tumor after 6.5 months of treatment, and complete resolution of metastases at 21 months after initiation of treatment in a pediatric patient with ganglioneuroblastoma (PMID: 29907598). 29907598
NPM1-ALK ALK I1171T Advanced Solid Tumor resistant Crizotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing NPM1-ALK with ALK I1171T were resistant to Xalkori (crizotinib) in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T Advanced Solid Tumor resistant Ceritinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing NPM1-ALK with ALK I1171T were resistant to Zykadia (ceritinib) in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T anaplastic large cell lymphoma resistant ASP3026 Preclinical - Cell culture Actionable In a preclinical study, human anaplastic large cell lymphoma cell lines harboring NPM1-ALK with ALK I1171T were resistant to ASP3026 mediated growth inhibition in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T Advanced Solid Tumor resistant ASP3026 Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing NPM1-ALK with ALK I1171T were resistant to ASP3026 in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T Advanced Solid Tumor resistant Alectinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing NPM1-ALK with ALK I1171T were resistant to Alecensa (alectinib) in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T Advanced Solid Tumor resistant Lorlatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing NPM1-ALK with ALK I1171T were resistant to Lorlatinib (PF-06463922) in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T Advanced Solid Tumor resistant Brigatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing NPM1-ALK with ALK I1171T were resistant to Alunbrig (brigatinib) in culture (PMID: 25749034). 25749034
NPM1-ALK ALK I1171T anaplastic large cell lymphoma resistant Crizotinib Preclinical - Cell culture Actionable In a preclinical study, an anaplastic large-cell lymphoma cell line expressing ALK I1171T in the context of NPM1-ALK demonstrated resistance to Xalkori (crizotinib) in culture (PMID: 24509625). 24509625