Impact of care pathway for nursing home residents treated for cancer: ONCO-EHPAD study.

PURPOSE: Few data are known about cancer management in frail nursing home residents. METHODS: Objective of our prospective, interventional study was to set up in the Marseille area, a care pathway for nursing homes residents with a suspected cancer. It combined cancer diagnosis procedures and comprehensive geriatric assessment (CGA), both made in our geriatric oncology outpatient unit, before oncologic advice for treatment decision. In standard care, CGA is carried out after therapeutic decision, to determine whether the planned treatment is compatible with the patient's frailties. CGA and quality of life were performed at enrolment and at 6 months. This study was registered in ClinicalTrials.gov (NCT03103659). RESULTS: Between April 2017 and March 2020, 48 residents from 38 nursing homes were included: 24 had the care pathway (PP), and 24 the standard care (NPP). Six were excluded (no cancer). PP had more frailties than NPP. All PP and 75% of NPP had outpatient care. Curative treatment was given to 77% of NPP (including chemotherapy in 10 cases), and 25% of PP (surgery, radiotherapy, hormone therapy). A majority of PP (75%) had supportive care. At 6 months, 16 patients died (11 NPP, 5 PP). Quality of life evolution was available for 11 PP and 7NPP: it showed stability in PP and degradation in NPP. CONCLUSION: Even if part of residents were too frail to get curative treatment, the care pathway enabled them to benefit from oncologic advice and appropriate supportive care while preserving their quality of life. Further investigations are needed to confirm these findings.

Activating and inhibitory Fcgamma receptors in immunotherapy: being the actor or being the target.

Membrane Fcgamma receptors (FcgammaRs) can act either as potent activators of effector cell functions or as inhibitors of receptor-mediated cell activation following engagement by IgG antibodies bound to their target molecules. The remarkable ability of activating FcgammaRs to trigger antibody-dependent cellular cytotoxicity, cytokine release and phagocytosis/endocytosis followed by antigen presentation has stimulated the development of a number of therapeutic monoclonal antibodies whose Fc regions have been engineered to optimize their effector functions, mostly their killing activities. Conversely, the demonstration that inhibitory FcgammaRs can block or downmodulate effector functions has led to the concept that targeting these receptors is of interest in a number of pathologies. The use of bispecific antibodies leading to the crosslinking of FcgammaRIIB with activating receptors could induce immunomodulation in autoimmune or allergic diseases. Alternatively, the use of cytotoxic/antagonist anti-FcgammaRIIB antibodies could kill FcgammaRIIB-positive tumor cells or prevent the downmodulation of activating receptors. Thus, antibodies engineered to preferentially target activating or inhibitory FcgammaRs are currently being designed for therapeutic use.