Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma

Background: Eosinophils are crucial in allergic inflammation, and their correlation with asthma severity has made them a focal point in predicting treatment outcomes. Blood eosinophil count is a commonly utilized marker. However, its limitations have prompted alternative biomarker exploration, such...

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Main Authors: Yu Ri Kang, MD, Hyunkyoung Kim, MS, MPH, Chae Eun Lee, BS, Jae-Woo Jung, MD, PhD, Ji-Yong Moon, MD, PhD, So Young Park, MD, MS, Sae-Hoon Kim, MD, PhD, Min-Suk Yang, MD, PhD, Byung Keun Kim, MD, PhD, Jae-Woo Kwon, MD, PhD, Hye-Kyung Park, MD, PhD, Young-Hee Nam, MD, PhD, Young-Joo Cho, MD, PhD, Taehoon Lee, MD, PhD, Ian M. Adcock, MD, PhD, Pank Bhavsar, MD, PhD, Kian Fan Chung, MD, PhD, Tae-Bum Kim, MD, PhD
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:World Allergy Organization Journal
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Online Access:http://www.sciencedirect.com/science/article/pii/S1939455124001224
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author Yu Ri Kang, MD
Hyunkyoung Kim, MS, MPH
Chae Eun Lee, BS
Jae-Woo Jung, MD, PhD
Ji-Yong Moon, MD, PhD
So Young Park, MD, MS
Sae-Hoon Kim, MD, PhD
Min-Suk Yang, MD, PhD
Byung Keun Kim, MD, PhD
Jae-Woo Kwon, MD, PhD
Hye-Kyung Park, MD, PhD
Young-Hee Nam, MD, PhD
Young-Joo Cho, MD, PhD
Taehoon Lee, MD, PhD
Ian M. Adcock, MD, PhD
Pank Bhavsar, MD, PhD
Kian Fan Chung, MD, PhD
Tae-Bum Kim, MD, PhD
author_facet Yu Ri Kang, MD
Hyunkyoung Kim, MS, MPH
Chae Eun Lee, BS
Jae-Woo Jung, MD, PhD
Ji-Yong Moon, MD, PhD
So Young Park, MD, MS
Sae-Hoon Kim, MD, PhD
Min-Suk Yang, MD, PhD
Byung Keun Kim, MD, PhD
Jae-Woo Kwon, MD, PhD
Hye-Kyung Park, MD, PhD
Young-Hee Nam, MD, PhD
Young-Joo Cho, MD, PhD
Taehoon Lee, MD, PhD
Ian M. Adcock, MD, PhD
Pank Bhavsar, MD, PhD
Kian Fan Chung, MD, PhD
Tae-Bum Kim, MD, PhD
author_sort Yu Ri Kang, MD
collection DOAJ
description Background: Eosinophils are crucial in allergic inflammation, and their correlation with asthma severity has made them a focal point in predicting treatment outcomes. Blood eosinophil count is a commonly utilized marker. However, its limitations have prompted alternative biomarker exploration, such as eosinophil-derived neurotoxin (EDN). Objective: This research was conducted over 24 weeks on 56 patients with severe asthma treated with mepolizumab, reslizumab, and dupilumab. We aimed to evaluate the clinical significance of blood eosinophil count and their potential, including those of blood EDN levels and urine EDN values as biomarkers for predicting treatment response. Methods: The analysis encompassed examining correlations between biomarkers and clinical features, including exacerbation rates and lung function, through ELISA assays and subsequent statistical analyses. The study protocol is registered at ClinicalTrials.gov (NCT05164939). Results: The findings underscore strong correlations between serum EDN levels, blood eosinophil counts, and treatment responses, with EDN demonstrating comparable predictive capabilities to blood eosinophil counts to determine treatment responses. Different biologics exhibited varying efficacy regarding baseline eosinophil counts and EDN levels. Conclusions: Blood eosinophil counts and EDN levels show potential as predictive markers for treatment responses in patients with severe asthma undergoing biologic therapies. However, further comprehensive studies are warranted to enhance the reliability and applicability of EDN as an effective asthma treatment biomarker.
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spelling doaj-art-ff2d681417494ab083405cee9f2ee90b2025-01-17T04:49:14ZengElsevierWorld Allergy Organization Journal1939-45512025-01-01181100990Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthmaYu Ri Kang, MD0Hyunkyoung Kim, MS, MPH1Chae Eun Lee, BS2Jae-Woo Jung, MD, PhD3Ji-Yong Moon, MD, PhD4So Young Park, MD, MS5Sae-Hoon Kim, MD, PhD6Min-Suk Yang, MD, PhD7Byung Keun Kim, MD, PhD8Jae-Woo Kwon, MD, PhD9Hye-Kyung Park, MD, PhD10Young-Hee Nam, MD, PhD11Young-Joo Cho, MD, PhD12Taehoon Lee, MD, PhD13Ian M. Adcock, MD, PhD14Pank Bhavsar, MD, PhD15Kian Fan Chung, MD, PhD16Tae-Bum Kim, MD, PhD17Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, South KoreaDepartment of Allergy and Clinical Immunology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South KoreaDepartment of Allergy and Clinical Immunology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South KoreaDepartment of Internal Medicine, Chung-Ang University College of Medicine, Seoul, South KoreaDepartment of Internal Medicine, Hanyang University College of Medicine, Seoul, South KoreaDepartment of Internal Medicine, Eulji University School of Medicine, Seoul, South KoreaDepartment of Internal Medicine, Division of Allergy and Clinical Immunology, Seoul National University Bundang Hospital, Seongnam, South KoreaDepartment of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, South KoreaDepartment of Internal Medicine, Korea University Medical Center Anam Hospital, Seoul, South KoreaDepartment of Allergy and Clinical Immunology, Kangwon National University School of Medicine, Chuncheon, South KoreaDepartment of Internal Medicine, Pusan National University Hospital, Pusan National University College of Medicine, Busan, South KoreaDepartment of Internal Medicine, Dong-A University College of Medicine, Busan, South KoreaDepartment of Allergy and Clinical Immunology, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul, South KoreaDepartment of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South KoreaNational Heart and Lung Institute, London, UKNational Heart and Lung Institute, London, UKNational Heart and Lung Institute, London, UKDepartment of Allergy and Clinical Immunology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea; Corresponding author. Department of Allergy and Clinical Immunology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea.Background: Eosinophils are crucial in allergic inflammation, and their correlation with asthma severity has made them a focal point in predicting treatment outcomes. Blood eosinophil count is a commonly utilized marker. However, its limitations have prompted alternative biomarker exploration, such as eosinophil-derived neurotoxin (EDN). Objective: This research was conducted over 24 weeks on 56 patients with severe asthma treated with mepolizumab, reslizumab, and dupilumab. We aimed to evaluate the clinical significance of blood eosinophil count and their potential, including those of blood EDN levels and urine EDN values as biomarkers for predicting treatment response. Methods: The analysis encompassed examining correlations between biomarkers and clinical features, including exacerbation rates and lung function, through ELISA assays and subsequent statistical analyses. The study protocol is registered at ClinicalTrials.gov (NCT05164939). Results: The findings underscore strong correlations between serum EDN levels, blood eosinophil counts, and treatment responses, with EDN demonstrating comparable predictive capabilities to blood eosinophil counts to determine treatment responses. Different biologics exhibited varying efficacy regarding baseline eosinophil counts and EDN levels. Conclusions: Blood eosinophil counts and EDN levels show potential as predictive markers for treatment responses in patients with severe asthma undergoing biologic therapies. However, further comprehensive studies are warranted to enhance the reliability and applicability of EDN as an effective asthma treatment biomarker.http://www.sciencedirect.com/science/article/pii/S1939455124001224EosinophilsAllergic inflammationAsthmaEosinophil-derived neurotoxinBlood eosinophil countsBiologic therapies
spellingShingle Yu Ri Kang, MD
Hyunkyoung Kim, MS, MPH
Chae Eun Lee, BS
Jae-Woo Jung, MD, PhD
Ji-Yong Moon, MD, PhD
So Young Park, MD, MS
Sae-Hoon Kim, MD, PhD
Min-Suk Yang, MD, PhD
Byung Keun Kim, MD, PhD
Jae-Woo Kwon, MD, PhD
Hye-Kyung Park, MD, PhD
Young-Hee Nam, MD, PhD
Young-Joo Cho, MD, PhD
Taehoon Lee, MD, PhD
Ian M. Adcock, MD, PhD
Pank Bhavsar, MD, PhD
Kian Fan Chung, MD, PhD
Tae-Bum Kim, MD, PhD
Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma
World Allergy Organization Journal
Eosinophils
Allergic inflammation
Asthma
Eosinophil-derived neurotoxin
Blood eosinophil counts
Biologic therapies
title Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma
title_full Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma
title_fullStr Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma
title_full_unstemmed Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma
title_short Serum and urine eosinophil-derived neurotoxin (EDN) levels predict biologic response in severe asthma
title_sort serum and urine eosinophil derived neurotoxin edn levels predict biologic response in severe asthma
topic Eosinophils
Allergic inflammation
Asthma
Eosinophil-derived neurotoxin
Blood eosinophil counts
Biologic therapies
url http://www.sciencedirect.com/science/article/pii/S1939455124001224
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