Severe acute respiratory syndrome coronavirus 2 vaccination for patients with solid cancer: Review and point of view of a French oncology intergroup (GCO, TNCD, UNICANCER).

The impacts of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic on cancer care are multiple, entailing a high risk of death from coronavirus disease 2019 (COVID-19) in patients with cancer treated by chemotherapy. SARS-CoV-2 vaccines represent an opportunity to decrease the rate of severe COVID-19 cases in patients with cancer and also to restore normal cancer care. Patients with cancer to be targeted for vaccination are difficult to define owing to the limited contribution of these patients in the phase III trials testing the different vaccines. It seems appropriate to vaccinate not only patients with cancer with ongoing treatment or with a treatment having been completed less than 3 years ago but also household and close contacts. High-risk patients with cancer who are candidates for priority access to vaccination are those treated by chemotherapy. The very high-priority population includes patients with curative treatment and palliative first- or second-line chemotherapy, as well as patients requiring surgery or radiotherapy involving a large volume of lung, lymph node and/or haematopoietic tissue. When possible, vaccination should be carried out before cancer treatment begins. SARS-CoV-2 vaccination can be performed during chemotherapy while avoiding periods of neutropenia and lymphopenia. For organisational reasons, vaccination should be performed in cancer care centres with messenger RNA vaccines (or non-replicating adenoviral vaccines in non-immunocompromised patients). Considering the current state of knowledge, the benefit-risk ratio strongly favours SARS-CoV-2 vaccination of all patients with cancer. To obtain more data concerning the safety and effectiveness of vaccines, it is necessary to implement cohorts of vaccinated patients with cancer.

[Vaccination against COVID-19 in patients with solid cancer: Review and point of view from a French oncology inter-group (CGO, TNCD, UNICANCER)]. / Vaccination contre la COVID-19 des patients atteints de cancer solide : revue et préconisations d'un inter-groupe oncologique français (CGO, TNCD, UNICANCER).

The COVID-19 pandemic has a major impact at all stages of cancer treatment. Risk of death from COVID-19 in patients treated for a cancer is high. COVID-19 vaccines represent a major issue to decrease the rate of severe forms of the COVID-19 cases and to maintain a normal cancer care. It is difficult to define the target population for vaccination due to the limited data available and the lack of vaccine doses available. It appears theoretically important to vaccinate patients with active cancer treatment or treated since less than three years, as well as their family circle. In France, patients actually defined at "high risk" for priority access to vaccination are those with a cancer treated by chemotherapy. A panel of experts recently defined another "very high-priority" population, which includes patients with curative or palliative first or second-line chemotherapy, as well as patients requiring surgery or radiotherapy involving a large lung volume, lymph nodes and/or of hematopoietic tissue. Ideally, it is best to vaccinate before cancer treatment. Despite the lack of published data, COVID-19 vaccines can also be performed during chemotherapy by avoiding periods of bone marrow aplasia and if possible, to do it in cancer care centers. It is necessary to implement cohorts with immunological and clinical monitoring of vaccinated cancer patients. To conclude, considering the current state of knowledge, the benefit-risk ratio strongly favours COVID-19 vaccination of all cancer patients.

Management of digestive cancers during the COVID-19 second wave: A French intergroup point of view (SNFGE, FFCD, GERCOR, UNICANCER, SFCD, SFED, SFRO, ACHBT, SFR).

INTRODUCTION: The COVID-19 pandemic has major impact of healthcare systems, including cancer care pathways. The aim of this work is to discuss in a multidisciplinary approach the therapeutic and/or strategies adaptations for patients treated for a digestive cancer during the European second wave of COVID-19 pandemic. METHODS: A collaborative work was performed by several French societies to answer how to preserve digestive cancer care with no loss of chance during the second wave of COVID-19. In this context, all recommendations are graded as expert's agreement according to level evidence found in literature until October 2020 and the experience of the first wave of the COVID-19 pandemic. RESULTS: As far as possible, no therapeutic modification should be carried out. If necessary, therapeutic adjustments may be considered if they do not constitute a loss of chance for patients. Considering the level of evidence all therapeutic modifications need to be discussed in multidisciplinary tumor board meeting and with patient consent. By contrast to first wave cancer prevention, cancer screening, supportive care and clinical trials should be continued. CONCLUSION: Recommendations proposed could limit cancer excess mortality due to the COVID-19 pandemic but should be adapted according to the situation in each hospital.