Figure 2

Mutation analysis of the PIK3CA gene was performed on gastroscopic biopsy specimen obtained before everolimus re-treatment, revealing one of the classical activating PIK3CA mutations at hotspot E545K in exon 9.
Mutation analysis of the PIK3CA gene was performed on gastroscopic biopsy specimen obtained before everolimus re-treatment, revealing one of the classical activating PIK3CA mutations at hotspot E545K in exon 9.