Table 1.
Demographic, Clinical, and Laboratory Parameters in the Treated Patients
Patient 1 | Patient 2 | Patient 3 | Patient 4 | Patient 5 | |
---|---|---|---|---|---|
Demographics | |||||
Sex | M | F | M | F | M |
Age, yr | 56 | 40 | 46 | 51 | 74 |
Past medical history | Esophagitis, psoriasis, allergic rhinitis, and hypogonadism | Type 2 diabetes, depression, posttraumatic stress disorder, and morbid obesity | Lambert Eaton syndrome, glaucoma, type 2 diabetes, and penile carcinoma in situ | Asthma | Hypertension; awaiting surgery for a benign posterior fossa tumor (on dexamethasone) |
Prehospital symptomatic period, d | 8 | 5 | 10 | 7 | 9 |
Time from hospital admission to LFG316 administration, d | 34 | 7 | 22 | 12 | 11 |
Inpatient course, before LFG316 | 4 d of mechanical ventilation on ICU early in COVID-19 course before ward discharge for 14 d, then ICU readmission | Rapid escalation to critical care within 48 h of hospital admission | Rapid escalation to critical care within 12 h of hospital admission | Admitted to critical care Day 3 after hospital admission with severe respiratory failure | Admission to critical care 1 d after hospital admission with severe hypoxia |
ICU course | |||||
Predrug steroids, g* | 3.75 | 0.3 | 0 | 0.45 | 0.48 |
Ventilation duration before LFG316, d | 4 plus 12 | 5 | 22 | 9 | 11 |
High-frequency oscillatory ventilation | No | Yes | Yes | No | No |
Nitric oxide | Yes | Yes | No | No | No |
ECMO referral | No | Yes | No | No | No |
Prone | Yes | Yes | Yes | Yes | Yes |
Paralysis | Yes | Yes | Yes | Yes | Yes |
Pulmonary emboli | Yes | No | No | No | Yes |
Normal Range | Patient 1 |
Patient 2 |
Patient 3 |
Patient 4 |
Patient 5 |
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---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Before Dosing | First 48 h | Day 7–10 | Before Dosing | First 48 h | Day 7–10 | Before Dosing | First 48 h | Day 7–10 | Before Dosing | First 48 h | Day 7–10 | Before Dosing | First 48 h | Day 5–8 | ||
Hemoglobin, g/L | 130–180 | 90.0 | 92.0 | 90.0 | 90.0 | 102 | 96.0 | 90.0 | 78.0 | 73.0 | 90 | 91.0 | 113 | 114 | 116 | 98.0 |
Platelets, ×109/L | 150–400 | 305 | 342 | 371 | 99 | 480 | 428 | 99 | 75 | 35 | 241 | 227 | 358 | 339 | 324 | 393 |
Neutrophils, ×109/L | 1.7–7.5 | 7.5 | 8.2 | 10.4 | 17.4 | 26.2 | 10.5 | 17.4 | 9.9 | 4.6 | 5.2 | 6.3 | 3.5 | 7.5 | 7.3 | 8.0 |
Lymphocytes, ×109/L | 1.0–4.5 | 1.5 | 1.1 | 1.6 | 0.9 | 3.0 | 1.4 | 0.9 | 0.4 | 0.1 | 1.0 | 1.2 | 1.7 | 1.3 | 1.0 | 1.9 |
Prothrombin time, s | 9.0–13.0 | 13.0 | 11.7 | — | 12.3 | 13.0 | 13.0 | 11.4 | — | 12.1 | 12.9 | 12.6 | — | 13.0 | 12.5 | 13.5 |
Activated partial thromboplastin time, s | 23.0–38.0 | 37.8 | 39.2 | — | 28.6 | 30.9 | 34.2 | 33.5 | — | 29.2 | 29.3 | 32.0 | — | 30.9 | 33.0 | 34.5 |
Fibrinogen, g/L | 2.0–4.0 | 6.3 | 6.0 | — | 8.5 | 6.0 | 7.2 | 5.4 | — | 4.0 | 11.3 | 7.7 | — | 8.8 | 7.7 | 10.0 |
C3, g/L | 0.75–1.65 | 2.13 | 1.86 | 2.03 | 1.80 | 1.67 | 1.93 | 1.12 | 1.17 | 1.22 | 1.54 | 1.73 | 2.02 | 1.49 | 1.36 | 2.00 |
C4, g/L | 0.14–0.54 | 0.45 | 0.43 | 0.45 | 0.30 | 0.28 | 0.40 | 0.27 | 0.30 | 0.32 | 0.24 | 0.30 | 0.36 | 0.10 | 0.15 | 0.21 |
C5, mg/L | 80.5–86.2 | 76.9 | 75.2 | 93.4 | 71.3 | 80.4 | 94.7 | 86.5 | 76.1 | 78.9 | 103.5 | 94.8 | 92.9 | — | — | — |
C5a, μg/L | 8.8–22.3 | 119.1 | 28.6 | 16.8 | 36.1 | 22.1 | 15.6 | 28.0 | 16.8 | 18.6 | 31.4 | 22.0 | 26.5 | — | — | — |
Terminal complement complex, mg/L | 1.2–7.2 | 17.3 | 6.5 | 3.3 | 13.1 | 3.2 | 8.6 | 10.3 | 3.8 | 5.3 | 11.3 | 5.5 | 12.9 | 12.4 | 2.1 | 7.6 |
Classical pathway hemolytic activity (CH50), hemolytic units | 70–130 | 229.8 | 0 | 175.1 | 132.2 | 0 | 69.9 | 284.4 | 0 | 88.9 | 268.4 | 0 | 105.5 | 247.9 | 0 | 151.5 |
C-reactive protein, mg/L | <5 | 99 | 31 | 8 | 170 | 36 | 59 | 113 | 22 | 24 | 164 | 43 | 27 | 133 | 182 | 149 |
Ferritin, μg/L | 15–300 | 666 | 599 | 354 | 350 | 266 | 169 | 3,004 | — | 384 | 473 | 248 | — | 424 | 421 | 508 |
Lactate dehydrogenase, U/L | 125–200 | 478 | 329 | 469 | 500 | 533 | 370 | 571 | — | 287 | 306 | 241 | — | 313 | 315 | 326 |
Procalcitonin, μg/L | <0.05 | 0.14 | 0.08 | 0.05 | 0.57 | 0.27 | 0.20 | 3.27 | 3.09 | 1.01 | 0.08 | 0.05 | — | 1.32 | 0.48 | 0.66 |
Troponin I (high sensitivity), ng/L | ||||||||||||||||
Male | 0–34 | 23 | 13 | 12 | — | — | — | 89 | — | 46 | — | — | — | 9 | 20 | 44 |
Female | 0–16 | — | — | — | <2 | <2 | 3 | — | — | — | 2 | <2 | — | — | — | — |
Follow-up duration, days since admission (after LFG316)† | — | 81 (48) |
50 (43) |
63 (42) |
49 (38) |
20 (8) |
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Current care level‡ | 1–6 | 1 | 1 | 3 | 1 | 6 |
Definition of abbreviations: COVID-19 = coronavirus disease; ECMO = extracorporeal membrane oxygenation.
Steroids, total prednisolone equivalent dose given in the Critical Care Unit before administration of LFG316; in a comparator group of 28 clinically matched patients, steroid dose was 0.95 g (SD, 0.27 g).
Correct at date of original submission, June 12, 2020; censored at Day 20 after admission for patient 5.
Care level at date of submission defined by six-point scale consisting of the following categories: 1 = not hospitalized; 2 = hospitalized, not requiring supplemental oxygen; 3 = hospitalized, requiring supplemental oxygen; 4 = hospitalized, requiring nasal high-flow oxygen therapy, noninvasive mechanical ventilation, or both; 5 = hospitalized, requiring invasive mechanical ventilation, ECMO, or both; 6 = death.