Prolonged in-hospital stay and higher mortality after Covid-19 among patients with non-Hodgkin lymphoma treated with B-cell depleting immunotherapy.

Prolonged Covid-19 is an emerging issue for patients with lymphoma or immune deficiency. We aimed to examine prolonged length of in-hospital stay (LOS) due to Covid-19 among patients with lymphoma and assess its determinants and outcomes. Adult patients with lymphoma admitted for Covid-19 to 16 French hospitals in March and April, 2020 were included. Length of in-hospital stay was analyzed as a competitor vs death. The study included 111 patients. The median age was 65 years (range, 19-92). Ninety-four patients (85%) had B-cell non-Hodgkin lymphoma. Within the 12 months prior to hospitalization for Covid-19, 79 patients (71%) were treated for their lymphoma. Among them, 63 (57%) received an anti-CD20 therapy. Fourteen patients (12%) had relapsed/refractory disease. The median LOS was 14 days (range, 1-235). After a median follow-up of 191 days (3-260), the 6-month overall survival was 69%. In multivariable analyses, recent administration of anti-CD20 therapy was associated with prolonged LOS (subdistribution hazard ratio 2.26, 95% confidence interval 1.42-3.6, p < 0.001) and higher risk of death (hazard ratio 2.17, 95% confidence interval 1.04-4.52, p = 0.039). An age ≥ 70 years and relapsed/refractory lymphoma were also associated with prolonged LOS and decreased overall survival. In conclusion, an age ≥ 70 years, a relapsed/refractory lymphoma and recent administration of anti-CD20 therapy are risk factors for prolonged LOS and death for lymphoma patients hospitalized for Covid-19. These findings may contribute to guide the management of lymphoma during the pandemic, support evaluating specific therapeutic approaches, and raise questions on the efficacy and timing of vaccination of this particular population.

Determinants of outcome in Covid-19 hospitalized patients with lymphoma: A retrospective multicentric cohort study.

BACKGROUND: Patients with lymphoma are immunocompromised because of the disease per se and its treatments. We aimed to describe the characteristics of patients with lymphoma hospitalized for Coronavirus Disease 2019 (Covid-19) and to analyze pre-Covid-19 determinants of mortality. METHODS: This retrospective multicentric cohort study used the Programme de Médicalisation des Systèmes d'Information database to identify all adult patients with lymphoma, hospitalized for Covid-19 in March and April 2020, in 12 hospitals of three French regions with pandemic outbreaks. The characteristics of lymphoma and Covid-19 were collected from medical charts. FINDINGS: Eighty-nine patients were included. The median age was 67 years (range, 19-92), 66% were male and 72% had a comorbidity. Most patients had B-cell non-Hodgkin lymphoma (86%) and had received a lymphoma treatment within one year (70%). With a median follow-up of 33 days from admission, 30-day overall survival was 71%, (95% confidence interval, 62-81%). In multivariable analysis, having an age ≥ 70 years (hazard ratio 2·87, 1·20-6·85, p = 0·02) and relapsed/refractory lymphoma (hazard ratio 2·54, 1·14-5·66, p = 0·02) were associated with mortality. Recent bendamustine treatment (n = 9) was also pejorative (hazard ratio 3·20, 1·33-7·72, p = 0·01), but was strongly associated with relapsed/refractory lymphoma. Remarkably, 30-day overall survival for patients < 70 years of age without relapsed/refractory lymphoma was 88% (78% - 99%). INTERPRETATION: Thirty-day mortality was associated with being older and relapsed/refractory lymphoma. Survival of patients younger than 70 years without relapsed/refractory lymphoma was comparable to that of the general population. FUNDING: There have been no specific funds to run this study.

[COVID-19 impact on the cancer care structuration: Example of the multidisciplinary team meeting dedicated to oncology in Occitanie]

This work examines the impact of the SARS-CoV2 epidemic and the organizational recommendations that have been issued since March 16 on tumor boards (TB) activity. The tumor board activity was measured from tumor board sheets extracted from the oncologic electronic file between January 7, 2019 and April 24, 2020. The pre-containment activity was compared to the activity of the containment periods but also to the equivalent periods in 2019. The number of meetings held, the average number of files reviewed per meeting including first presentations and the average number of physicians' attendance were the evaluation criteria. The study covered 191 TB that held 3943 multidisciplinary team meetings (MTM) and reviewed 72,070 files (including 30,127 first submissions). There was a moderate decrease of 8 % in the number of meetings after March 16, 2020. The number of files examined decreased by 23 % in the following month and even more by 33 % in the third period. The physicians' number who attended MTM also decreased by 25 %. The negative impact was higher in the Mediterranean part of the region. This first study of tumor board activity, covering a large region but little affected by the pandemic, shows that its impact on the participation to the MTM has been moderate. In addition, tumor boards have followed the recommendations for optimizing quorum. However, the decrease in average MTM activity, particularly for first submissions, suggests a potential delay in patient management. Complementary qualitative and quantitative works are warranted to estimate the real impact on carcinologic outcomes.

Could anti-CD20 therapy jeopardise the efficacy of a SARS-CoV-2 vaccine?

A vaccine against SARS-CoV-2 might represent the most promising approach to halt durably the current COVID-19 pandemic. We believe that anti-CD20 therapy may jeopardise the efficacy of such a vaccine. This is regrettable because patients receiving anti-CD20 therapy (i.e. those with haematologic malignancies or autoimmune disorders) are particularly at risk of severe COVID-19 and, as such, are the most in need of a vaccine. Here, we review the reasons why anti-CD20 therapy may abrogate or diminish the efficacy of a vaccine against SARS-CoV-2 and we draw physicians' attention towards this potential risk so that it can be considered when evaluating the risk/benefit ratio of anti-CD20 therapy during the current pandemic.