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
A 51 year old female never-smoker was diagnosed with stage IV NSCLC with liver metastases. ALK rearrangement was verified via FISH. She was treated with crizotinib at 250 mg twice daily but discontinued due to adverse response. She then started alectinib at 600 mg twice daily with partial response, but new liver metastases then formed at 5 months. Liver tumor biopsy was performed and was estimated to be 15% tumor tissue. Next-generation sequencing discovered an ALK I1171N mutation. The tumor was not sequenced prior to alectinib resistance.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/1367
Gene URL
https://civic.genome.wustl.edu/links/genes/1
Variant URL
https://civic.genome.wustl.edu/links/variants/527
Rating
2
Evidence Type
Predictive
Disease
Lung Non-small Cell Carcinoma
Evidence Direction
Supports
Drug
Alectinib
Evidence Level
C
Clinical Significance
Resistance
Pubmed
25736571
Drugs
Drug NameSensitivitySupported
AlectinibResitance or Non-Reponsetrue