Descriptive analysis of Cycle Threshold in patients with hematologic malignancies infected with SARS-COV-2

Area of Science:

• Medical research
• Infectious diseases
• Hematology

Background:

• Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a global health crisis.
• Patients with hematologic malignancies face a higher risk of mortality from SARS-CoV-2 infection.
• The cycle threshold (Ct) value in RT-PCR tests serves as an indirect indicator of viral load.

Purpose of the Study:

• To investigate the association between Ct values and COVID-19 severity in patients with hematologic malignancies.
• To explore the potential of Ct values as a prognostic tool for disease course and infectivity.

Main Methods:

• A retrospective, observational, descriptive analysis was conducted.
• Data included Ct values at diagnosis from 15 adult patients with hematologic malignancies who tested positive for SARS-CoV-2.
• Patient outcomes, including pneumonia development, need for respiratory support, and mortality, were recorded.

Main Results:

• Patients who died had significantly lower mean Ct values (15.5) compared to survivors (20.2).
• Patients who developed pneumonia had lower mean Ct values (18.2) than those without pneumonia (19.3).
• Severe COVID-19 cases exhibited the lowest Ct values.

Conclusions:

• Lower Ct values in SARS-CoV-2 positive patients with hematologic malignancies correlate with increased disease severity and mortality.
• The Ct value shows potential as a tool for predicting COVID-19 course and infectivity in this vulnerable population.
• Further research with larger cohorts is recommended to validate Ct as a quantitative laboratory determination.