Common for COVID-19 cytokine storm in patients with SARS-CoV-2 infection and CLL (chronic lymphocytic leukemia)

The cytokine storm has been identified as one of the leading causes of the severe course and, in some cases, the fatal outcome of COVID-19 infection. Other factors aggravating the course of the disease are accompanying disorders such as cardiovascular diseases, diabetes mellitus, diseases of the respiratory system, and oncological diseases. In this article, we present the course of the corona-virus infection in patients with an accompanying malignant disease, chronic lymphocytic leukemia (CLL), namely. The study included 8 patients with proven PCR-positive tests for SARS-CoV2 and confirmed chronic lymphocytic leukemia as a comorbidity. The course of the coronavirus infection in the CLL group was compared with that in the control group of 100 patients. In both groups, we compared subjective complaints such as tiredness, fatigue, and joint and muscle pain with objective criteria such as temperature, laboratory markers of inflammation, X-ray imaging, and frequency of necessary intubation. Despite the expected poor prognosis in patients with concomitant oncological disease, in the case of chronic lymphocytic leukemia, our results showed a quite different milder coronavirus infection course. Obviously, patients with CLL cannot develop a pronounced cytokine storm, most probably due to certain immunosuppression related to the pathogenesis and drug treatment options for the comorbidity of CLL.