TUBB3 is expressed in most pancreatic ductal adenocarcinomas, possibly accounting for the suboptimal response of these tumours to microtubule-stabilizing agents. Up-regulation of TUBB3 in PanIN lesions suggests that microtubule dysfunction is an early feature of this disease. TUBB3 immunohistochemistry could potentially help identify pancreatic cancer patients lacking TUBB3 expression who might benefit from taxane therapy.
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