Drug-drug interactions between palbociclib and proton pump inhibitors in early breast cancer: an exploratory analysis of PALLAS (ABCSG-42/AFT-05/BIG-14-13/PrE0109).

Background: Concomitant intake of proton pump inhibitors (PPIs) may create drug-drug interactions, potentially impacting efficacy of anticancer agents. In the phase III PALLAS trial, the addition of palbociclib capsules to standard adjuvant endocrine therapy in patients with hormone receptor-positive, human epidermal growth factor receptor 2-negative early breast cancer did not improve invasive disease-free survival (iDFS). We explored whether concomitant use of PPIs affected survival outcomes in patients treated with palbociclib in PALLAS.

[Advances in immunotherapy of colorectal cancer].

Treatment of locally advanced rectal cancer involves neoadjuvant chemoradiotherapy (CRT), including induction or consolidation chemotherapy. Introduction of immunotherapy has brought success in several solid tumors and hematological diseases. In colorectal tumors, it was only introduced later.

Glucocorticoid Receptor Isoforms in Breast Cancer Raise Implications for Personalised Supportive Therapies.

Glucocorticoid receptor (GR) activation may promote metastasis in oestrogen receptor-negative and triple-negative breast cancer (TNBC). However, the role of the GRβ isoform, which has opposing effects to the main isoform, has not been studied in clinical samples. We aimed to analyse the intracellular localisation of total GR and GRβ in vitro using plasmid constructs and fluorescent immunocytochemistry.

[Retrospective analysis of metaplastic breast cancer cases].

Metaplastic breast tumour is a rare, aggressive, mostly triple- negative, dedifferentiated malignancy, which poorly responds to chemotherapy compared to other invasive breast tumours. Since 2000, the WHO has considered it as a separate entity among breast tumours. Given the extremely poor prognosis of the tumour, more studies are needed to establish the most effective treatment strategy supported by data to increase overall survival.

How to Tackle Discordance in Adjuvant Chemotherapy Recommendations by Using Oncotype DX Results, in Early-Stage Breast Cancer.

Background: The use of the Oncotype DX test reduces the rate of adjuvant chemotherapy recommendations. Few in-depth analyses have been performed on this decision-making process.

Methods: We retrospectively analyzed patient data based on available Oncotype DX test results (RS) irrespective of nodal status at a single center.