Tonix to develop treatment for Long COVID

Tonix Pharmaceuticals is planning to develop TNX-102 SL (cyclobenzaprine HCl sublingual tablets) as a potential treatment for Long COVID Syndrome.

Tonix plans to meet with the US FDA in the third quarter of 2021 to seek agreement on the design of a potential Phase 2 pivotal study and the overall clinical development plan to qualify TNX-102 SL as an indicated treatment for Long COVID (which is now known officially as Post-Acute Sequelae of COVID-19 (PASC).

Although most people recover from COVID-19 within weeks of the acute illness, a substantial portion develop a chronic syndrome called Long COVID, or PASC. T

hese individuals experience a constellation of symptoms long past the time of recovery from acute COVID-19. Most Long COVID patients who have been studied appear to have cleared the SARS-CoV-2 virus from their systems.

The symptoms of Long COVID can include fatigue, sleep disorders, pain, fevers, shortness of breath, cognitive impairment described as “brain fog”, gastrointestinal symptoms, anxiety, and depression.

Long COVID can persist for months and can range in severity from mild to incapacitating. Several cohort studies have reported that persistence of symptoms following SARS-CoV-2 infection occurs in more than 30% of patients.

While typically associated with moderate or severe COVID-19, Long COVID can occur after mild COVID-19 or even after asymptomatic SARS-CoV-2 infection.

Seth Lederman, President and CEO of Tonix, said: “We are excited to begin development of TNX-102 SL for the treatment of Long COVID because the program leverages what we have learned about the pharmacodynamic activity of TNX-102 SL from more than one thousand participants who have been or are enrolled in our fibromyalgia trials to date.

“Long COVID has been compared to fibromyalgia because of the common symptoms of sleep disturbance, persistent pain, fatigue, and brain fog.

“Additionally, Long COVID, like fibromyalgia, is experienced by women at a rate approximately four times that of men.

“The 2003 SARS outbreak that was due to an earlier coronavirus outbreak was also described as causing a post-SARS syndrome similar to fibromyalgia.

“Long COVID is a chronic disabling condition that is expected to result in a significant global economic burden. In response to the urgent need for therapies that address PASC, Congress awarded $1.15 billion to the National Institutes of Health to study Long COVID last December.

“While the vaccines available in the U.S. under Emergency Use Authorisation have been shown to prevent acute COVID, their ability to prevent Long COVID is unknown. There is currently no approved drug for the treatment of PASC.”

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