The challenge of sustainability in healthcare systems: economic and organizational impact of subcutaneous formulations for rituximab and trastuzumab in onco-hematology.

Background: This study estimated the economic and organisational impact of using subcutaneous injection (SC) formulations of two monoclonal antibodies (rituximab and trastuzumab) in patients with non-Hodgkin's lymphoma (NHL) and HER2 + breast cancer (BC).Methods: The database of the Unit of Oncology and Haematology of the IRST of Meldola was used. The analysis was structured as follows: i) measurement of the volume of Day-Hospital activity; ii) identification of activities and time to complete the administration; iii) estimate the mean cost of an SC or IV (intravenous infusion); iv) estimate the impact of SC formulations on the volumes of activities provided; v) estimate the social impact of SC or IV formulations.Results: The use of an SC formulation was associated a significant reduction in the time that the patient takes to complete the administration (trastuzumab -1 hr 18 min; rituximab -2 hr 24 min) and in consumption of healthcare resources and related costs for trastuzumab (IV: € 1781; SC: € 1701) and rituximab (IV: € 2116; SC: € 1941).Conclusion: The adoption of the SC formulation for rituximab and trastuzumab can generate a greater value for both the national healthcare system and the patient compared to an IV formulation.

Can biomarker assessment on circulating tumor cells help direct therapy in metastatic breast cancer?

Circulating tumor cell (CTC) count has prognostic significance in metastatic breast cancer, but the predictive utility of CTCs is uncertain. Molecular studies on CTCs have often been limited by a low number of CTCs isolated from a high background of leukocytes. Improved enrichment techniques are now allowing molecular characterisation of single CTCs, whereby molecular markers on single CTCs may provide a real-time assessment of tumor biomarker status from a blood test or "liquid biopsy", potentially negating the need for a more invasive tissue biopsy. The predictive ability of CTC biomarker analysis has predominantly been assessed in relation to HER2, with variable and inconclusive results. Limited data exist for other biomarkers, such as the estrogen receptor. In addition to the need to define and validate the most accurate and reproducible method for CTC molecular analysis, the clinical relevance of biomarkers, including gain of HER2 on CTC after HER2 negative primary breast cancer, remains uncertain. This review summarises the currently available data relating to biomarker evaluation on CTCs and its role in directing management in metastatic breast cancer, discusses limitations, and outlines measures that may enable future development of this approach.