and all patients continued tralokinumab treatment following their diagnosis.
Andrew Blauvelt, MD, MBA
“This is a great first look at COVID-19 outcomes in this population,” lead study investigator Andrew Blauvelt, MD, MBA, said during the Revolutionizing Atopic Dermatitis symposium. “This suggests that tralokinumab does not significantly impact the ability to respond to SARS-CoV-2, the virus that causes COVID-19. It’s encouraging and promising.”
Tralokinumab is a fully human IgG4 monoclonal antibody that specifically binds to interleukin-13, which is a key driver of underlying inflammation in AD. An ongoing, open-label extension trial called ECZTEND is investigating the long-term safety and efficacy of tralokinumab in patients with AD who participated in previous tralokinumab trials. The purpose of the current case series is to describe the outcomes of patients diagnosed with COVID-19 while participating in ECZTEND, which is a 5-year study.
“Patients are receiving tralokinumab 300 mg every 2 weeks,” said Dr. Blauvelt, a dermatologist who is president of Oregon Medical Research Center, Portland. “They’re allowed to use topical steroids, but they’re not allowed to use other AD treatments. We do regular clinical and safety assessments throughout the study.”
As of Feb. 26, 2021, there were 51 adults with moderate to severe AD who had confirmed COVID-19 infection during treatment with tralokinumab every 2 weeks. “Patients were not required to discontinue tralokinumab treatment following a COVID-19 diagnosis, if continuation was deemed appropriate by the investigator,” Dr. Blauvelt said. Of the 51 patients, 22 were male, 29 were female, their mean age was 38 years, and their baseline body mass index was 27.6 kg/m2. Most of the patients (36, or 71%) were from Europe, 15 (29%) were from North America, and 30 (59%) had a history of asthma.
The average duration of COVID-19 infection was 15 days and severity of disease was mild in 35 patients (69%), moderate in 14 (27%), and severe in 2 (4%). According to the study abstract, those two patients had multiple risk factors and comorbidities, including obesity, chronic obstructive pulmonary disease, and cardiovascular disease. They were hospitalized for a mean of 7 days, but subsequently recovered – one with sequelae. None of the patients died.
Of the 51 COVID-19 cases, 2 were deemed to be possibly related to tralokinumab treatment by the investigator, Dr. Blauvelt said. Both were mild or moderate cases that occurred in patients younger than age 30. “Interestingly, 75% of the COVID-19 patients had no dose interruption; they continued dosing their tralokinumab every 2 weeks during and around the time they had COVID-19,” he said. “However, 25% of patients did interrupt their dosing during COVID-19 infection. That means that they either delayed or stopped dosing while they were sick.”
Of the 51 patients, 19 (37%) had received their first dose of the COVID-19 vaccine and 6 (12%) had received their second dose. “So, 12% of patients were fully vaccinated,” Dr. Blauvelt said. “We do know that the mRNA vaccines are about 95% effective in preventing COVID-19. Currently in Oregon, about 98% of our cases are in unvaccinated patients and about 2% of COVID-19 patients are fully vaccinated.”
In addition, the recently published ECZTRA5 vaccine study showed that nonlive vaccines (tetanus, diphtheria, and pertussis; and meningococcal vaccines) could be safely administered and can elicit normal immune responses in patients treated with tralokinumab.
“We sorely need COVID-19–related safety data for all of our current and emerging systemic and biologic therapies used to treat atopic dermatitis,” said Jonathan I. Silverberg, MD, PhD, MPH, director of clinical research in the division of dermatology at George Washington University, Washington, who was asked to comment about these results. “This study is important because it shows that tralokinumab was not associated with any obvious safety signals with respect to COVID-19 infections. The major limitation is that it is not a prospective study designed to assess tralokinumab efficacy in COVID-19 patients per se. However, this post hoc study provides reassuring data. We need similar or even more robust studies for other systemic therapies in AD.”
Dr. Blauvelt reported that he is an investigator and a scientific advisor for LEO Pharma, which is developing tralokinumab, and for several other pharmaceutical companies developing treatments for AD. Dr. Silverberg reported that he is a consultant to and/or an advisory board member for several pharmaceutical companies, including LEO Pharma.