September 23, 2021


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COVID-19 clinical trials: platform and trials of reused drugs


In our Weblog For Clinical Trials Day 2020, we summarized the COVID-19 research that had been recorded up to now at ISRCTN Registry. A yr later and there are actually extra 170 COVID-19 research recorded. On this weblog, we assessment the outcomes of Platform essays mentioned in our first weblog and a range of drug remedy reused exams launched since.

Platform exams

Platform trials evaluate a number of remedies on the similar time utilizing a single protocol, permitting new remedies to be added and ineffective remedies to be dropped all through the trial.

The World Health Group (WHO) organized the SOLIDARITY and discovered that remedy regimens with the reused antiviral drugs remdesivir, hydroxychloroquine, lopinavir and interferon had little or no effect on hospitalized sufferers.

COVID-19 clinical trials: platform and trials of reused drugs
Dashboard of COVID-19 research recorded on the ISRCTN


The UK RECOVERY the trial is the largest clinical trial in the world remedies for COVID-19, with greater than 30,000 individuals at 177 trial websites on the time of writing. He discovered that the low price steroid dexamethasone reduces mortality by as much as a 3rd in hospitalized sufferers receiving invasive mechanical air flow or oxygen.

Preliminary outcomes additionally confirmed that tocilizumab (a remedy for rheumatoid arthritis) too improves survival and different clinical outcomes. Nonetheless, antivirals lopinavir – ritonavir and hydroxychloroquine, the antibiotic azithromycin and convalescent plasma didn’t scale back mortality. The cocktail of antiviral antibodies REGN-COV2 and the anti-inflammatory drugs aspirin and colchicine have since been added to RECOVERY.

COVID-19 clinical trials: platform and trials of reused drugs
Affected person with COVID-19 handled in hospital

© Tempura / Getty Photos / iStock


the PRINCIPLE The trial is testing community-based remedies for suspected COVID-19 within the aged and these with pre-existing circumstances in GP practices in England. They’re searching for remedies to assist individuals with signs of COVID-19 get well rapidly in order that they need not go to the hospital.

Hydroxychloroquine was initially included within the trial however was discontinued based mostly on the outcomes of the opposite research. Antibiotics azithromycin and doxycycline have additionally been discovered to be typically ineffective. PRINCIPLE is at the moment testing the generally used inhaled corticosteroid budesonide and anti-inflammatory colchicine.

Different platform exams

Different platform exams embody ACTT-EU / United Kingdom, who discovered that remdesivir shortened restoration time in hospitalized adults. AGREEMENT-2 is testing remedies together with bemcentinib, MEDI-3506, acalabrutinib and zilucoplan.

Our present information of extreme COVID-19 means that the immune system is overactivated in response to an infection, which might result in organ injury.

Our present information of extreme COVID-19 means that the immune system is overactivated in response to an infection, which might result in organ injury. Drugs authorized for sufferers with autoimmune illnesses similar to rheumatoid arthritis and drugs not authorized in trials for these circumstances are being examined to see if they’ll forestall this overactivation of the immune response.

Testing the platform REMAP-CAP discovered that immune modulation with tocilizumab and sarilumab improved critically sick affected person outcomes, together with survival, whereas CATALYST is evaluating remedies together with monoclonal antibodies gemtuzumab ozogamicin, namilumab and infliximab to see if they’ll scale back irritation within the physique attributable to the virus.

New exams

Immune modulation

Different monoclonal antibodies examined embody adalimumab, which is at the moment the topic of AVID-CC testing to see if giving it to sufferers exterior the hospital can forestall development to respiratory failure or loss of life.

TACTIC-R additionally recruits sufferers at an early stage once they start to have delicate pulmonary issues to see if the reused drugs ravulizumab and baricitinib can forestall organ injury and scale back the necessity for intensive care unit remedy and ventilated respiratory assist .

Otilimab is examined within the OSCAR check particularly in sufferers at a later stage who’ve developed extreme pulmonary issues and require oxygen or mechanical air flow.

COVID-19 clinical trials: platform and trials of reused drugs
Medical doctors in protecting gear put a air flow masks on a person with COVID-19, who’s in an intensive care unit of a contemporary hospital.

© Valerii /


A number of different antiviral drugs are being examined, together with favipiravir – the GETAFIX The examine is investigating whether or not giving it to sufferers with milder signs of COVID-19 helps alleviate their signs and shortens the time it takes to get well.

the IONIC A examine is testing whether or not a mixture of the antiviral oseltamivir and a brand new drug (IMU-838) can enhance the time it takes to get well from COVID-19. SNG001, an inhaled drug that accommodates the antiviral protein interferon-β, is being examined within the SPRINTER check to see if it might pace restoration for hospital sufferers receiving oxygen.

Different reused drugs

Different drugs being examined embody almitrine, which is being examined to see if it might enhance blood oxygen ranges and scale back the necessity for oxygen remedy and different kinds of respiratory assist. the RECOVER The trial is investigating whether or not losartan, an antihypertensive drug, can enhance affected person outcomes.

the ILIAD-7-UK The trial goals to find out whether or not the drug CYT107 can scale back mortality by reversing lymphopenia (the place sufferers have abnormally low ranges of white blood cells referred to as lymphocytes) and T cell depletion (which prevents the physique from coping with infections. power viral infections).

Take residence message

the ISRCTN Registry continues to assist world analysis on COVID-19 by prioritizing the well timed registration and notification of research associated to COVID-19. All recorded research are made obtainable worldwide via the International clinical trials registration platform (ICTRP), and all UK research seem on Be part of the research.

Within the second half from this weblog we focus on the vaccine trials and research analyzing the testing and affect of COVID-19 on different circumstances.

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