Utilizing Patient-Derived Xenografts to Model Precision Oncology for Biliary Tract Cancer
Timothy P DiPeri1, Kurt W Evans2, Stephen Scott2
1Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas.
Researchers developed a new collection of patient-derived xenograft models for biliary tract cancers. These models reflect diverse genomic alterations, aiding precision oncology and personalized treatment development for this rare cancer.
Area of Science:
- Oncology
- Genomics
- Translational Research
Background:
- Biliary tract cancers are rare, aggressive malignancies with actionable molecular alterations.
- A significant challenge is the lack of relevant models for studying these diverse tumors.
Purpose of the Study:
- To create a comprehensive collection of patient-derived xenograft (PDX) models for biliary tract cancers.
- To establish a resource for precision oncology by reflecting the spectrum of genomic alterations.
Main Methods:
- PDX models were established from patient samples (surgical resections or biopsies).
- Whole-exome and RNA sequencing were used for molecular profiling.
- PDX models were treated with targeted agents to assess therapeutic efficacy.
Main Results:
- Identified key actionable genomic alterations (FGFR2, IDH1, ERBB2, PIK3CA, PTEN, KRAS) and fusions/expression of ADC targets (TROP2, HER2, Nectin4).
- Demonstrated objective responses to approved and investigational agents in therapeutic matching studies.
Conclusions:
- Developed a catalog of molecularly profiled biliary tract cancer PDX models.
- This collection represents a significant resource for advancing personalized treatments for biliary tract cancers.
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