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Trial of SNG 001 shows positive results in COVID-19 patients.- Synairgen

Written by | 21 Jul 2020 | COVID-19

Synairgen announced positive results from its clinical trial of SNG001, its wholly-owned inhaled formulation of interferon beta, in hospitalised COVID-19 patients. The double-blind placebo-controlled trial recruited 101 patients from 9 specialist hospital sites in the UK during the period 30 March to 27 May 2020. Patient groups were evenly matched in terms of average age (56.5 years for placebo and 57.8 years for SNG001), comorbidities and average duration of COVID-19 symptoms prior to enrolment (9.8 days for placebo and 9.6 days for SNG001). The odds of developing severe disease (e.g. requiring ventilation or resulting in death) during the treatment period (day 1 to day 16) were significantly reduced by 79% for patients receiving SNG001 compared to patients who received placebo (OR 0.21 [95% CI 0.04-0.97]; p=0.046).

Patients who received SNG001 were more than twice as likely to recover (defined as ‘no limitation of activities’ or ‘no clinical or virological evidence of infection’) over the course of the treatment period compared to those receiving placebo (HR 2.19 [95% CI 1.03-4.69]; p=0.043). Over the treatment period, the measure of breathlessness was markedly reduced in patients who received SNG001 compared to those receiving placebo (p=0.007). Three subjects (6%) died after being randomised to placebo. There were no deaths among subjects treated with SNG001. In the patients with more severe disease at time of admission (i.e. requiring treatment with supplemental oxygen), SNG001 treatment increased the likelihood of hospital discharge during the study, although the difference was not statistically significant (HR 1.72 [95% CI 0.91-3.25]; p=0.096). Median time to discharge was 6 days for patients treated with SNG001 and 9 days for those receiving placebo.

Furthermore, patients receiving SNG001 appeared to be more than twice as likely to have recovered by the end of the treatment period (HR 2.60 [95% CI 0.95-7.07]; p=0.062), although this strong trend did not reach statistical significance. However by day 28, patients receiving SNG001 treatment had statistically significantly better odds of recovery (OR 3.86 [95% CI 1.27-11.75]; p=0.017). Interestingly, the efficacy analyses indicate there is no evidence of an association between the SNG001 positive treatment effects and prior duration of COVID-19 symptoms. Further analysis will be conducted over the coming weeks and reported in due course.

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