• Medicine · Jul 2023

    Clinical Trial

    Quality of life in adult patients using dialyzable leukocyte extract for allergic rhinitis.

    • Toni Angela Homberg, Ivan Lara, Consuelo Andaluz, Edgar Cervantes-Trujano, Pedro Martín Hernández-Martínez, Sonia Mayra Pérez-Tapia, and María Carmen Jiménez-Martínez.
    • Unidad de Servicios Externos e Investigación Clínica (USEIC), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de Mexico, Mexico.
    • Medicine (Baltimore). 2023 Jul 7; 102 (27): e34186e34186.

    AbstractAllergic rhinitis (AR) has considerable impact on the general health of individuals. Therefore, treatment trials should include an evaluation of quality of life. We aimed to determine changes in the quality of life of moderate/severe AR patients treated with standard treatment in addition to dialyzable leukocyte extract (DLE), a peptide-based immunomodulator. In a prospective, non-controlled trial, DLE was added to the standard treatment regimen for patients with moderate/severe AR. DLE was administered orally at 2 mg per day for 5 days, followed by 4 mg per week for 5 weeks, and then 2 mg per week for 5 weeks. The primary endpoints were overall improved Standardized Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ) scores, domain scores, and individual item scores of 0.5 points or higher. Statistical significance was defined as P < .05. Thirty patients (50% female) aged 14 to 60 years old (33.4 ± 11.9) were enrolled in this study. The mean overall basal quality of life score was 3.41 ± 1.22. After 11 weeks, the mean RQLQ score was 1.74 ± 1.09 ( P < .0001; 95% confidence interval [CI], 1.05-2.33), and all the domain scores improved (daily activities P < .001, 95% CI 0.91-2.15, sleep P < .001, 95% CI 0.9-2.26, non-hay fever symptoms P = .001, 95% CI 0.51-1.82, practical problems P < .001, 95% CI 1.55-2.85, nasal symptoms P < .001, 95% CI 1.36-2.67, ocular symptoms P < .001, 95% CI 1.05-2.17, emotional P < .001, 95% CI 1.23-2.55). Each of the 28 individual item scores on the RQLQ showed clinical (minimal important difference [MID] ≥ 0.5) and statistical ( P < .05) improvements. DLE might be a beneficial adjuvant treatment for AR. Our results provide preliminary data for future research. Clinical trials registration ID: NCT02506998.Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.

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