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Ivermectin study #51 of 63
1/12 Late treatment study
Okumuş et al., NCT04646109 (Preprint)
Evaluation of the Effectiveness and Safety of Adding Ivermectin to Treatment in Severe COVID-19 Patients
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Small RCT for severe COVID-19 comparing the addition of ivermectin to SOC (low dose HCQ+AZ+favipiravir), with 30 treatment and 30 control patients in Turkey, showing lower mortality and faster clinical recovery. Authors also investigate the presence of gene mutations that alter ivermectin metabolism, predicting that ivermectin can be used safely without serious side effects in patients without MDR-1/ABCB1 and/or CYP3A4 gene mutation, and recommending monitoring and appropriate treatment if necessary when sequencing is unavailable.

Okumuş et al., 1/12/2021, Double Blind Randomized Controlled Trial, Turkey, Middle East, preprint, 15 authors, dosage 200μg/kg days 1-5, 36-50kg - 9mg, 51-65kg - 12mg, 66-79kg - 15mg, >80kg 200μg/kg.
risk of death, 33.3% lower, RR 0.67, p = 0.55, treatment 6 of 30 (20.0%), control 9 of 30 (30.0%).
risk of no improvement at day 10, 42.9% lower, RR 0.57, p = 0.18, treatment 8 of 30 (26.7%), control 14 of 30 (46.7%).
risk of no improvement at day 5, 15.8% lower, RR 0.84, p = 0.60, treatment 16 of 30 (53.3%), control 19 of 30 (63.3%).
risk of no virological cure, 80.0% lower, RR 0.20, p = 0.02, treatment 2 of 16 (12.5%), control 5 of 8 (62.5%), day 10.

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
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