Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils

Henry Lin, Kevin M. Boesel, Daniel T. Griffith, Calman Prussin, Barbara Foster, F. A. Romero, Robert Townley, Thomas B. Casale

Research output: Contribution to journalArticle

204 Citations (Scopus)

Abstract

Background: Omalizumab is a monoclonal anti-IgE antibody that is effective for the treatment of allergic respiratory disorders; however, its onset of action is unknown. Objective: This study was designed to determine the onset of action of omalizumab through the use of a challenge model to determine time-dependent inhibition of ragweed-induced changes in nasal volume as well as correlate the kinetics of omalizumab-induced decreases in serum free IgE and FcεRI receptors on basophils. Methods: We conducted a 6-week, randomized, double-blind, placebo-controlled study of 24 rhinitic patients with ragweed allergy. After PD30 ragweed nasal allergen challenge, patients received either omalizumab, ∼0.016 mg/kg per IgE (IU/mL), or placebo at days 0 and 28 and were rechallenged with ragweed PD30 dose biweekly. FcεRI expression on blood basophils was determined by flow cytometry at baseline and 7, 14, 28, and 42 days after treatment. IgE levels were measured at baseline and on days 3, 28, and 42. Results: Mean IgE levels decreased by 96% (P <.001) from baseline within 3 days In the omalizumab group. Baseline 30% ragweed-induced nasal volume response was decreased to 20.4% at 7 to 14 days (P <.001) and 12.2% at 35 to 42 days (P <.001) for the omalizumab group. There was a median decrease in basophil FcεRI expression of 73% (P <.001) In the omalizumab group, with maximum inhibition occurring within 14 days of treatment. No significant changes in IgE levels, nasal allergen challenge responses, or basophil FcεRI expression were observed throughout the study in the placebo group. Conclusions: Our study showed that the onset of action by omalizumab in blunting ragweed-induced nasal responses is within 2 weeks, and this response was associated with 2 putative mechanisms of action: decreased serum free IgE and decreased FcεRI receptor expression on immune effector cells.

Original languageEnglish
Pages (from-to)297-302
Number of pages6
JournalJournal of Allergy and Clinical Immunology
Volume113
Issue number2
DOIs
StatePublished - Feb 2004

Fingerprint

Basophils
Ambrosia
Nose
Immunoglobulin E
Placebos
Allergens
IgE Receptors
Omalizumab
Serum
Flow Cytometry
Hypersensitivity
Therapeutics
Monoclonal Antibodies

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

Cite this

Lin, H., Boesel, K. M., Griffith, D. T., Prussin, C., Foster, B., Romero, F. A., ... Casale, T. B. (2004). Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils. Journal of Allergy and Clinical Immunology, 113(2), 297-302. https://doi.org/10.1016/j.jaci.2003.11.044

Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils. / Lin, Henry; Boesel, Kevin M.; Griffith, Daniel T.; Prussin, Calman; Foster, Barbara; Romero, F. A.; Townley, Robert; Casale, Thomas B.

In: Journal of Allergy and Clinical Immunology, Vol. 113, No. 2, 02.2004, p. 297-302.

Research output: Contribution to journalArticle

Lin, H, Boesel, KM, Griffith, DT, Prussin, C, Foster, B, Romero, FA, Townley, R & Casale, TB 2004, 'Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils', Journal of Allergy and Clinical Immunology, vol. 113, no. 2, pp. 297-302. https://doi.org/10.1016/j.jaci.2003.11.044
Lin, Henry ; Boesel, Kevin M. ; Griffith, Daniel T. ; Prussin, Calman ; Foster, Barbara ; Romero, F. A. ; Townley, Robert ; Casale, Thomas B. / Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils. In: Journal of Allergy and Clinical Immunology. 2004 ; Vol. 113, No. 2. pp. 297-302.
@article{66b82a6dfe2445b58cfbfc6502a04819,
title = "Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils",
abstract = "Background: Omalizumab is a monoclonal anti-IgE antibody that is effective for the treatment of allergic respiratory disorders; however, its onset of action is unknown. Objective: This study was designed to determine the onset of action of omalizumab through the use of a challenge model to determine time-dependent inhibition of ragweed-induced changes in nasal volume as well as correlate the kinetics of omalizumab-induced decreases in serum free IgE and FcεRI receptors on basophils. Methods: We conducted a 6-week, randomized, double-blind, placebo-controlled study of 24 rhinitic patients with ragweed allergy. After PD30 ragweed nasal allergen challenge, patients received either omalizumab, ∼0.016 mg/kg per IgE (IU/mL), or placebo at days 0 and 28 and were rechallenged with ragweed PD30 dose biweekly. FcεRI expression on blood basophils was determined by flow cytometry at baseline and 7, 14, 28, and 42 days after treatment. IgE levels were measured at baseline and on days 3, 28, and 42. Results: Mean IgE levels decreased by 96{\%} (P <.001) from baseline within 3 days In the omalizumab group. Baseline 30{\%} ragweed-induced nasal volume response was decreased to 20.4{\%} at 7 to 14 days (P <.001) and 12.2{\%} at 35 to 42 days (P <.001) for the omalizumab group. There was a median decrease in basophil FcεRI expression of 73{\%} (P <.001) In the omalizumab group, with maximum inhibition occurring within 14 days of treatment. No significant changes in IgE levels, nasal allergen challenge responses, or basophil FcεRI expression were observed throughout the study in the placebo group. Conclusions: Our study showed that the onset of action by omalizumab in blunting ragweed-induced nasal responses is within 2 weeks, and this response was associated with 2 putative mechanisms of action: decreased serum free IgE and decreased FcεRI receptor expression on immune effector cells.",
author = "Henry Lin and Boesel, {Kevin M.} and Griffith, {Daniel T.} and Calman Prussin and Barbara Foster and Romero, {F. A.} and Robert Townley and Casale, {Thomas B.}",
year = "2004",
month = "2",
doi = "10.1016/j.jaci.2003.11.044",
language = "English",
volume = "113",
pages = "297--302",
journal = "Journal of Allergy and Clinical Immunology",
issn = "0091-6749",
publisher = "Mosby Inc.",
number = "2",

}

TY - JOUR

T1 - Omalizumab rapidly decreases nasal allergic response and FcεRI on basophils

AU - Lin, Henry

AU - Boesel, Kevin M.

AU - Griffith, Daniel T.

AU - Prussin, Calman

AU - Foster, Barbara

AU - Romero, F. A.

AU - Townley, Robert

AU - Casale, Thomas B.

PY - 2004/2

Y1 - 2004/2

N2 - Background: Omalizumab is a monoclonal anti-IgE antibody that is effective for the treatment of allergic respiratory disorders; however, its onset of action is unknown. Objective: This study was designed to determine the onset of action of omalizumab through the use of a challenge model to determine time-dependent inhibition of ragweed-induced changes in nasal volume as well as correlate the kinetics of omalizumab-induced decreases in serum free IgE and FcεRI receptors on basophils. Methods: We conducted a 6-week, randomized, double-blind, placebo-controlled study of 24 rhinitic patients with ragweed allergy. After PD30 ragweed nasal allergen challenge, patients received either omalizumab, ∼0.016 mg/kg per IgE (IU/mL), or placebo at days 0 and 28 and were rechallenged with ragweed PD30 dose biweekly. FcεRI expression on blood basophils was determined by flow cytometry at baseline and 7, 14, 28, and 42 days after treatment. IgE levels were measured at baseline and on days 3, 28, and 42. Results: Mean IgE levels decreased by 96% (P <.001) from baseline within 3 days In the omalizumab group. Baseline 30% ragweed-induced nasal volume response was decreased to 20.4% at 7 to 14 days (P <.001) and 12.2% at 35 to 42 days (P <.001) for the omalizumab group. There was a median decrease in basophil FcεRI expression of 73% (P <.001) In the omalizumab group, with maximum inhibition occurring within 14 days of treatment. No significant changes in IgE levels, nasal allergen challenge responses, or basophil FcεRI expression were observed throughout the study in the placebo group. Conclusions: Our study showed that the onset of action by omalizumab in blunting ragweed-induced nasal responses is within 2 weeks, and this response was associated with 2 putative mechanisms of action: decreased serum free IgE and decreased FcεRI receptor expression on immune effector cells.

AB - Background: Omalizumab is a monoclonal anti-IgE antibody that is effective for the treatment of allergic respiratory disorders; however, its onset of action is unknown. Objective: This study was designed to determine the onset of action of omalizumab through the use of a challenge model to determine time-dependent inhibition of ragweed-induced changes in nasal volume as well as correlate the kinetics of omalizumab-induced decreases in serum free IgE and FcεRI receptors on basophils. Methods: We conducted a 6-week, randomized, double-blind, placebo-controlled study of 24 rhinitic patients with ragweed allergy. After PD30 ragweed nasal allergen challenge, patients received either omalizumab, ∼0.016 mg/kg per IgE (IU/mL), or placebo at days 0 and 28 and were rechallenged with ragweed PD30 dose biweekly. FcεRI expression on blood basophils was determined by flow cytometry at baseline and 7, 14, 28, and 42 days after treatment. IgE levels were measured at baseline and on days 3, 28, and 42. Results: Mean IgE levels decreased by 96% (P <.001) from baseline within 3 days In the omalizumab group. Baseline 30% ragweed-induced nasal volume response was decreased to 20.4% at 7 to 14 days (P <.001) and 12.2% at 35 to 42 days (P <.001) for the omalizumab group. There was a median decrease in basophil FcεRI expression of 73% (P <.001) In the omalizumab group, with maximum inhibition occurring within 14 days of treatment. No significant changes in IgE levels, nasal allergen challenge responses, or basophil FcεRI expression were observed throughout the study in the placebo group. Conclusions: Our study showed that the onset of action by omalizumab in blunting ragweed-induced nasal responses is within 2 weeks, and this response was associated with 2 putative mechanisms of action: decreased serum free IgE and decreased FcεRI receptor expression on immune effector cells.

UR - http://www.scopus.com/inward/record.url?scp=1142309487&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1142309487&partnerID=8YFLogxK

U2 - 10.1016/j.jaci.2003.11.044

DO - 10.1016/j.jaci.2003.11.044

M3 - Article

C2 - 14767445

AN - SCOPUS:1142309487

VL - 113

SP - 297

EP - 302

JO - Journal of Allergy and Clinical Immunology

JF - Journal of Allergy and Clinical Immunology

SN - 0091-6749

IS - 2

ER -