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Update on the CAPItello-290 phase III trial for Truqap + chemotherapy in advanced or metastatic triple-negative breast cancer

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Published:18th Jun 2024

The CAPItello-290 Phase III trial for Truqap (capivasertib) in combination with paclitaxel in patients with locally advanced (inoperable) or metastatic triple-negative breast cancer (TNBC) did not meet the dual primary endpoints of improvement in overall survival (OS) versus paclitaxel in combination with placebo in either the overall trial population or in a subgroup of patients with tumours harbouring specific biomarker alterations (PIK3CA, AKT1 or PTEN)

Breast cancer is the second most common cancer and one of the leading causes of cancer-related deaths worldwide. While some breast cancers may test positive for estrogen receptors, progesterone receptors or overexpression of human epidermal growth factor receptor 2 (HER2), TNBC is defined as negative for all three. In the 1st-line setting, approximately 59,000 patients with TNBC are treated with a medicine. Collectively, mutations in PIK3CA, AKT1 and alterations in PTEN affect approximately 35% of patients with TNBC.

Peter Schmid, MD, Barts Cancer Institute, London, UK, and principal investigator for the trial said: “Despite modest advances, triple-negative breast cancer remains one of the most challenging forms of disease to treat due to the lack of known actionable biomarker targets, and chemotherapy-based regimens continue to be the mainstay of treatment. While the CAPItello-290 trial results have not shown what we hoped, they provide important information to further understand this aggressive form of breast cancer where patients are in urgent need of new treatments.”

Susan Galbraith, Executive Vice President, Oncology R&D, AstraZeneca, said: “We are committed to advancing science for patients in some of the most challenging cancers, including this heterogeneous subtype of breast cancer. While we are disappointed in the CAPItello-290 outcome, these results will further our understanding of the role of the PI3K/AKT pathway in breast cancer as we continue our clinical research across the Truqap clinical development programme and across our pipeline.”

The safety profile of Truqap in combination with paclitaxel in CAPItello-290 was broadly consistent with the known safety profile of each medicine with no new safety concerns identified. Data will be shared in due course.

Truqap is currently being evaluated in Phase III trials for the treatment of breast cancer (CAPItello-292) and prostate cancer (CAPItello-280 and CAPItello-281) in combination with established treatments.

Condition: Breast Cancer Triple Neg
Type: drug

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