Table 1.

Impact of COVID-19 in cancer patients.

Authors	Country	Period of study	Study design	Total of cancer patients with COVID-19	Conclusions
Zhang et al.	China	February 26, 2020	Retrospective	28	Cancer patients developed severe events and have poor outcomes from the SARS-CoV-2 infection.
Zhonghua et al.	China	February 11, 2020	Retrospective	107	The mortality rate from COVID-19 is higher in cancer patients than in the general population.
WHO-China Joint Mission	China	February 28, 2020	Retrospective	Not reported	The mortality rate from COVID-19 of cancer patients is higher than patients without comorbidities.
Lee et al.	United Kingdom	March 18 to April 26, 2020	Prospective observational	800	Mortality by COVID-19 in cancer patients seems to have been caused by their age, gender, and comorbidities.
Kuderer et al.	USA, Canada and Spain	March 17 and April 16, 2020	Retrospective	928	Factors associated with mortality in cancer patients with COVID-19 were increasing age, male sex, former smoker, active cancer, comorbidities, ECOG ≥ 2, and treatment with hydroxychloroquine plus azithromycin.

Abbreviations: ECOG, Eastern Cooperative Oncology Group.