Remdesivir alone is not enough, researchers conclude in first major Covid-19 trial of the drug

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Researchers have finally published the data that led the federal government to recommend the use of the antiviral drug remdesivir in very ill coronavirus pat...

Posted: May 22, 2020 6:40 PM
Updated: May 22, 2020 8:30 PM

Researchers have finally published the data that led the federal government to recommend the use of the antiviral drug remdesivir in very ill coronavirus patients, and they say the drug alone will not be enough to help patients.

The data, published in the New England Journal of Medicine, show the drug shortened the course of illness from an average of 15 days to about 11 days.

'Preliminary results of this trial suggest that a 10-day course of remdesivir was superior to placebo in the treatment of hospitalized patients with Covid-19,' the researchers wrote. But it was not a cure and it did not act quickly.

'These preliminary findings support the use of remdesivir for patients who are hospitalized with Covid-19 and require supplemental oxygen therapy,' the researchers, led by a team at the National Institute of Allergy and Infectious Diseases, wrote.

'However, given high mortality despite the use of remdesivir, it is clear that treatment with an antiviral drug alone is not likely to be sufficient,' they added. 'Future strategies should evaluate antiviral agents in combination with other therapeutic approaches or combinations of antiviral agents to continue to improve patient outcomes in Covid-19.'

Other teams are already combining antiviral drugs, including remdesivir, with immune modulating drugs in coronavirus patients. The NIAID says it has started a trial that compares remdesivir alone to remdesivir combined with the anti-inflammatory drug baricitinib, used to treat rheumatoid arthritis.

The study also showed that it's important to start treatment early.

'Our findings highlight the need to identify Covid-19 cases and start antiviral treatment before the pulmonary disease progresses to require mechanical ventilation,' NIAID'S clinical research leaders Dr. John Beigel, Dr. Clifford Lane and their team wrote.

Late last month, the federal government announced that the drug was helping and the US Food and Drug Administration gave remdesivir an emergency use authorization to treat Covid-19.

'Even though the trial was ongoing, the data and safety monitoring board made the recommendation to unblind the results to the trial team members from the NIAID, who subsequently decided to make the results public,' the researchers wrote.

'Given the strength of the results about remdesivir, these findings were deemed to be of immediate importance for the care of patients still participating in the trial as well as for those outside the trial who might benefit from treatment with remdesivir.'

The study's findings were considered significant because it was the first double-blind, placebo-controlled trial to test the drug in patients. That means some patients got no drug, and neither patient nor doctors knew who was getting the real treatment.

But some critics complained that the data were not published and worried the federal government was rushing the results.

The team tested 1,063 patients. They found those who got the infused drug recovered after an average of 11 days. Those who got placebo treatment took 15 days on average to recover. As previously reported, 7% of patients who got remdesivir died, compare to 11.9% given placebo infusions. But those results were not statistically significant.

Patients who needed oxygen appeared to benefit the most from the drug, the researchers reported.

'These findings support the use of remdesivir in this population, with the largest benefit observed among individuals who required oxygen supplementation but were not mechanically ventilated,' Gilead Sciences, which makes the drug, said in a statement.

'We anticipate that results from our Phase 3 SIMPLE-Severe study, which is evaluating remdesivir in a similar population of COVID-19 patients requiring oxygen but not on mechanical ventilation, will be published in the near future. These data from the SIMPLE-Severe study support treatment of some patients for 5 days rather than 10 days, depending on clinical status.'

Adverse events

Remdesivir did not cause an excess of side-effects and appeared safer than placebo, they added.

'Forty-nine patients had remdesivir treatment discontinued before day 10 because of an adverse event or a serious adverse event other than death (36 patients) or because the patient withdrew consent (13 patients),' the team wrote.

'Serious adverse events occurred in 114 patients (21.1%) in the remdesivir group and 141 patients (27.0%) in the placebo group,' the researchers wrote.

It was a serious challenge to launch a clinical trial in the middle of a pandemic, the research team said.

'The trial was implemented during a time of restricted travel, and hospitals restricted the entrance of nonessential personnel,' they wrote.

'Training, site initiation visits, and monitoring visits often were performed remotely. Research staff were often assigned other clinical duties, and staff illnesses strained research resources. Many sites did not have adequate supplies of personal protective equipment and trial-related supplies, such as swabs. However, research teams were motivated to find creative solutions to overcome these challenges.'

The study is still ongoing. 'Our preliminary report is intended to help inform clinicians considering the use of remdesivir,' the researchers wrote. 'We are awaiting final visits, data entry, monitoring, and data lock for the last of the 1,063 patients enrolled, after which an update of the results will be provided.'

Minnesota Coronavirus Cases

Data is updated nightly.

Confirmed Cases: 20573

Reported Deaths: 878
CountyConfirmedDeaths
Hennepin6918534
Ramsey231697
Stearns192312
Nobles14572
Anoka116455
Dakota105935
Olmsted55110
Washington50626
Kandiyohi4541
Clay36623
Rice3652
Scott3462
Wright2401
Sherburne2081
Todd1970
Benton1662
Carver1612
Mower1501
Steele1400
Martin1245
Blue Earth1121
St. Louis11113
Pine850
Freeborn840
Winona7715
Carlton730
Nicollet683
Cottonwood620
Polk582
Otter Tail550
Itasca527
Goodhue522
Watonwan500
Chisago481
Dodge430
Meeker420
Crow Wing421
Le Sueur411
Chippewa400
Jackson390
Morrison380
Murray350
Becker320
Lyon310
Douglas290
McLeod260
Isanti250
Waseca240
Rock210
Unassigned199
Fillmore171
Mille Lacs161
Wabasha160
Swift150
Sibley120
Beltrami120
Wilkin113
Norman110
Kanabec111
Cass113
Faribault110
Brown112
Pipestone100
Marshall80
Pennington70
Pope70
Aitkin60
Wadena60
Yellow Medicine50
Koochiching50
Lincoln50
Mahnomen51
Renville50
Lac qui Parle30
Red Lake30
Big Stone30
Redwood30
Traverse30
Grant20
Houston20
Clearwater20
Hubbard10
Kittson10
Lake10
Roseau10

Iowa Coronavirus Cases

Data is updated nightly.

Confirmed Cases: 17227

Reported Deaths: 456
CountyConfirmedDeaths
Polk3714108
Woodbury255524
Black Hawk167639
Linn92775
Marshall86611
Dallas84914
Johnson5987
Muscatine54339
Wapello5004
Crawford4772
Tama39023
Louisa3347
Scott3319
Dubuque31916
Jasper25616
Buena Vista2310
Pottawattamie2106
Sioux1990
Washington1798
Allamakee1184
Wright1170
Plymouth1080
Warren1060
Story941
Poweshiek888
Bremer676
Henry611
Clinton601
Boone540
Des Moines531
Mahaska526
Cedar451
Guthrie433
Taylor370
Benton371
Jones360
Monroe334
Iowa320
Clarke320
Osceola320
Shelby310
Buchanan310
Clayton303
Marion290
Webster271
Fayette260
Hamilton260
Madison241
Monona230
Cerro Gordo221
Lee220
Winneshiek210
Davis200
Lyon190
Grundy190
Harrison190
Floyd181
Jefferson150
Cherokee150
Butler150
Mills140
Delaware140
Humboldt130
Sac130
Greene130
Keokuk130
Hardin130
Howard120
Hancock120
Appanoose123
Audubon111
Jackson110
Cass110
Ida100
Page100
Clay100
Winnebago100
Carroll90
Van Buren80
Franklin80
Dickinson80
Adair80
Chickasaw80
Kossuth70
Emmet70
Lucas60
Montgomery60
Union60
Adams50
Ringgold40
Fremont40
Pocahontas40
Mitchell40
Palo Alto30
Worth30
Unassigned30
Calhoun20
Wayne10
Decatur00
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