Annotation Detail

Information
Associated Genes
ALK
Associated Variants
ALK p.Ile1171Thr (p.I1171T) ALK p.Ile1171Thr (p.I1171T)
Associated Disease
lung non-small cell carcinoma
Source Database
CIViC Evidence
Description
The MGH056-1 cell line was derived from a patient with ALK rearranged NSCLC who had progressed on crizotinib and then on lower dose alectinib (300 mg twice daily). The I1171T ALK kinase domain mutation was found in this cell line (established after alectinib resistance). MGH056-1 cells were resistant to crizotinib (IC50 236nmol/L; aproximately 50x higher than for ceritinib). About 50 fold higher concentration of crizotinib was required to inhibit Ba/F3 cells expressing EML4 ALK I1171T than was required for EML4 ALK wild-type.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/1287
Gene URL
https://civic.genome.wustl.edu/links/genes/1
Variant URL
https://civic.genome.wustl.edu/links/variants/527
Rating
3
Evidence Type
Predictive
Disease
Lung Non-small Cell Carcinoma
Evidence Direction
Supports
Drug
Crizotinib
Evidence Level
D
Clinical Significance
Resistance
Pubmed
25228534
Drugs
Drug NameSensitivitySupported
CrizotinibResitance or Non-Reponsetrue