The following in vivo experimental results further confirmed this conclusion. Four groups of MDA-MB-231 cells were subcutaneously implanted into NOD/SCID mice. When the tumor volume reached 250 mm3, epirubicin was inject
[Paragraph-level] PMCID: PMC8033310 Section: RESULTS PassageIndex: 6
Evidence Type(s): Predictive, Oncogenic
Justification: Predictive: The passage discusses how the PIK3CA mutation, including E545K, induces resistance to chemotherapy, indicating a correlation with treatment response. Oncogenic: The variant E545K is implicated in tumor development and progression, as evidenced by the experimental results showing increased tumor volume in the presence of this mutation.
Gene→Variant (gene-first): 5290:E545K
Genes: 5290
Variants: E545K