Cytotoxic marker levels. (Panel A) Patients included in this analysis were treated with mycophenolate mofetil (MFM, n = 2) at 3 g/day, baricitinib (BARI, n = 3) at 4 mg/day, and adalimumab (ADA, n = 3) at 40 mg/2 weeks. The patients and controls (ctrl, n = 4) were all COVID-naïve. (Panel B) Patients (n = 8) were compared based on MFM treatment, seroconversion status (Ab+ = seroconverted, Ab- = not seroconverted), and previous history of COVID-19 (previous COVID-19= ex-C or COVID-naïve=-naïve). Each black spot represents a patient, the bars indicate means and standard errors of the mean (SEM) of the marker levels.