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Dupilumab Improves Outcomes in COPD With Type 2 Inflammation

May 29, 2024
in Health
Dupilumab Improves Outcomes in COPD With Type 2 Inflammation
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Dupilumab significantly reduced exacerbations and improved lung function in adults with uncontrolled chronic obstructive pulmonary disease (COPD) and type 2 inflammation, based on data from more than 900 individuals.

Data from a phase 3 trial known as NOTUS were presented at the American Thoracic Society (ATS) 2024 International Conference and published simultaneously in The New England Journal of Medicine.

Dupilumab, a fully human monoclonal antibody, works by inhibiting the signaling of the interleukin 4 (IL-4) and IL-13 pathways and is approved for many conditions characterized by type 2 inflammation, wrote Surya P. Bhatt, MD, of The University of Alabama at Birmingham, and colleagues in the NEJM study.

“Last year, we showed in the BOREAS trial that dupilumab was very effective in lowering exacerbation frequency in patients with COPD who continued to have frequent exacerbations despite being on maximal inhaled therapy,” Bhatt said in an interview.

12 Months of COPD, Triple Inhaler Therapy

In the NOTUS study, the researchers randomized 470 adults with uncontrolled COPD and type 2 inflammation (defined as a blood eosinophil count of ≥ 300 cells/µL) to 300-mg subcutaneous dupilumab and 465 to a placebo every 2 weeks. Patients were enrolled between July 2020 and May 2023.

The study population included adults aged 40-85 years with physician-diagnosed COPD for at least 12 months who had received background triple inhaler therapy (an inhaled glucocorticoid agent plus long-acting muscarinic antagonist [LAMA]–long-acting beta-agonist [LABA] or LAMA-LABA alone) for at least 3 months and at a stable dose for at least 1 month. All participants were current or former smokers with a smoking history of at least 10 pack-years.

The primary endpoint was a reduction in the annualized rate of moderate or severe COPD exacerbations at 52 weeks.

At 52 weeks, the annualized rate of moderate or severe exacerbations was significantly lower (34%) in the dupilumab group than in the placebo group (0.86 vs 1.30, P <.001>

Patients in the dupilumab group also saw a significantly greater improvement in lung function than individuals in the placebo group based on prebronchodilator forced expiratory volume in 1 second from baseline to 12 weeks (least squares mean change of 139 mL vs 57 mL). This improvement was sustained at 52 weeks (least squares mean change of 115 mL vs 54 mL).

Improvement in respiratory symptom severity based on the St. George’s Respiratory Questionnaire was another secondary endpoint, and changes in total score were greater in the dupilumab group than in the placebo group (least squares mean change of 9.8 vs 6.4).

Safety outcomes were similar between the dupilumab and placebo groups, with approximately 66% of patients in each group reporting adverse events during the 52-week study period. Serious adverse events occurred in 13% and 15.9% of dupilumab and placebo patients, respectively, and adverse events resulting in death occurred in 2.6% and 1.5%, respectively. The most common adverse events were COVID-19, which occurred in 9.4% and 8.2% of the dupilumab and placebo patients, respectively, followed by headache, COPD, and nasopharyngitis. Major adverse cardiovascular events occurred in three patients in the dupilumab group and seven patients in the placebo group.

The findings were limited by several factors including the reduced sample size for 52-week endpoints because of the earlier analysis and the primarily White study population, the researchers noted. The study was conducted in part during the COVID-19 pandemic period, which contributed to healthcare disruptions and behavior changes that decreased exposure to viral respiratory infections, they wrote in their discussion. However, the results were strengthened by the large numbers and international population without other major pulmonary diseases, such as asthma, and the 34% reduction in exacerbations with dupilumab vs placebo is clinically significant, they said.

Data May Drive US Food and Drug Administration (FDA) Approval

In the BOREAS trial, dupilumab also improved lung function and quality of life, with no notable safety concerns. “As with any trial evaluating the efficacy and safety of a medication, it is important to confirm the findings in a replicative study,” Bhatt told Medscape Medical News. “With NOTUS, we confirmed the findings of BOREAS,” and the researchers were reassured by the substantial reduction in exacerbation frequency and the replication of key secondary outcomes, she said.

With the NOTUS study, “two randomized trials have now shown near identical reductions in exacerbation frequency in a difficult-to-treat population of patients with COPD with type 2 inflammation and frequent exacerbations,” as well as a significant and meaningful improvement in lung function, Bhatt said in an interview. “We hope these trials pave for the way for regulatory body approval of dupilumab for clinical use,” she said. Looking ahead, more studies are needed to test the potential disease modification effects of dupilumab in patients with COPD, she added.

Potential Change in Patient Management

Approximately 20%-40% of patients with COPD have type 2 inflammation with elevated blood eosinophil count, and this subset of patients has an increased risk for exacerbations, with worsening lung function and quality of life, said Dharani K. Narendra, MD, of Baylor College of Medicine, Houston, in an interview.

Prior phase 3 studies have shown that dupilumab, a blocker of IL-4 and IL-13 pathways, could effectively reduce exacerbations and improve lung function in these patients, and the NOTUS study aimed to confirm the findings in a larger, more diverse population, said Narendra, who was not involved in the study.

The NOTUS study represents a paradigm shift in the management of COPD patients with type 2 inflammation, said Narendra. “This study validates the previous BOREAS trial and has shown that dupilumab reduces exacerbations, improves lung function and quality of life, and potentially slows disease progression,” she said.

If approved, potential barriers to the use of dupilumab in practice include cost and insurance coverage, education and dissemination of study findings, and limited data on side effects, said Narendra.

“While the NOTUS study provides valuable insights into the efficacy and safety of dupilumab over 52 weeks, longer-term studies are needed to understand the sustained benefits and risks of continued treatment,” Narendra told Medscape Medical News. “Studies comparing dupilumab with other biological agents and newer COPD treatments could provide insights into its relative efficacy and position in treatment protocols,” she said.

In addition, further research into dupilumab’s underlying mechanisms could provide deeper insights into the pathophysiology of type 2 inflammation in COPD and inform the development of new treatments, Narendra said. “These steps will help integrate dupilumab more effectively into clinical practice and optimize its use for COPD patients with type 2 inflammation,” she noted.

Dupilumab is undergoing Priority Review by the FDA as an add-on maintenance therapy for adults with uncontrolled COPD and type 2 inflammation, with a target action date of June 27, 2024, according to a company press release.

The study was funded by Sanofi and Regeneron Pharmaceuticals. Narendra had no financial conflicts to disclose but serves on the Editorial Advisory Board of CHEST Physician.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Medscape – https://www.medscape.com/viewarticle/dupilumab-improves-outcomes-copd-patients-type-2-2024a10009z1

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