Profile and Outcomes of COVID-19 Infection in Pediatric Patients with and without Cancer: A Case-Control Study

Objectives Pediatric patients with cancer are considered a vulnerable population to the ill effects of coronavirus disease 2019 (COVID-19). We hereby studied the difference between clinical characteristics, lab parameters, and outcomes of COVID-19 among children suffering from cancer and those without cancer. We also analyzed risk factors for the occurrence of moderate-to-severe COVID-19 disease in pediatric cancer patients. Materials and Methods This retrospective case-control study was carried out using the medical record review method over 6 months in a tertiary-care center in India. All patients below 18 years of age, with reverse-transcriptase polymerase chain reaction (RTPCR) confirmed COVID-19, were screened for enrolment. Patients were split into two groups: Group A comprised of patients with cancer, while group B consisted of patients without any underlying comorbidity. Patients with other comorbidity except cancer and inadequately recorded case sheets were excluded. Details regarding demography, clinical features, investigations, treatment, and outcomes were recorded. Statistical Analysis Microsoft Excel and Statistical Package for the Social Sciences (SPSS) software, version 25 was used for data analysis. A p-value less than 0.05 was considered significant. Results Two-hundred-five pediatric inpatients with RTPCR-established COVID-19 infection were screened and final analyses were performed on 97 patients, of which 31 children were classified into group A and 66 into group B. Median age of enrolled children was 5 years with 58.8% males. The prevalence of cancer as a comorbidity in pediatric inpatients with COVID-19 was 15%. Fifty-five percent of cancer patients had hematological malignancies, while 45% had solid tumors. Fever (p = 0.001) and gastrointestinal manifestations (p = 0.0001) were significantly less common among pediatric cancer patients. Children with cancer had significantly more leukopenia (p = 0.003), neutropenia (p = 0.003), and lymphopenia (p = 0.005). The case fatality rate was higher in children with cancer (3.2%) as compared to noncancer patients (1.5%, p = 1.0). Few risk factors for moderate-to-severe COVID-19 among children with cancer included age less than 2 years (p = 0.06), undernutrition (p = 0.33), advanced stage of cancer (p = 0.49), and presence of coinfection (p = 0.35) Conclusion Cancer is a significant comorbidity among pediatric COVID-19 patients. While children with cancer have less severe COVID-19, their case fatality rate is higher than those without cancer. Younger age, undernutrition, advanced stage of cancer, and presence of coinfections may predispose to the development of moderate-to- severe COVID-19 among pediatric cancer patients.