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Drug

Omalizumab

Established medicine
ClassIg epsilon chain C region inhibitorResearchActive indication expansion

Also known as Omlyclo, RHUMAB-E25, Xolair.

7
Research papers
13
Active clinical trials
IGHE
Primary target
25
Regulatory events
Latest activity
beta

Recent clinical, regulatory, research and industry developments relating to this drug.

Omalizumab May Ease Inflammation in Chronic Urticaria

Industry2026-09-17Medscape Medical News

Effect of Omalizumab in the Skin of Food Allergy Patients

Clinical trial2026-09-01Primary completion · ClinicalTrials.gov

Omalizumab for the Treatment of Food Allergy in Patients With Elevated Total IgE Levels

Clinical trial2026-06-08Results expected Q2 2027 · ClinicalTrials.gov

Approval: Omlyclo (EMA)

Regulatory2024-05-16EMA

Omalizumab for the Treatment of Multiple Food Allergies.

Research2024-02-25The New England journal of medicine

Omalizumab for treatment of idiopathic angioedema.

Research2022-07-30Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology

Profile

Identifiers & mechanism

Canonical identifiers, marketed brand names and mechanism, resolved across RxNorm, ChEMBL and ATC.

Canonical name
Omalizumab
Aliases & brands
OmlycloRHUMAB-E25Xolair
RxNorm CUI
302379
ChEMBL ID
CHEMBL1201589
ATC codes
R03DX05
UNII
2P471X1Z11
Primary mechanism
Ig epsilon chain C region inhibitor
Regulatory jurisdictions
emamhrafda

Pharmacology & targets

1 target

Known molecular targets and mechanisms supported by curated pharmacology databases.

INHIBITORIg epsilon chain C region inhibitor

Regulatory timeline

25 events

The complete regulatory record, grouped by authority — approvals, safety advisories and label changes. Each authority shows its most recent events; expand one to read its full history.

Approval / market entry confirmed across FDA and EMA (2005-10-252006-04-07)
Approval / market entry confirmed across FDA and EMA (2023-08-172024-05-16)
Earliest approval
2003-06-20
Latest approval
2024-05-16
Authorities
FDA · EMA · MHRA
Total events
25
fdaU.S. Food and Drug Administration· 21 events
2026-08-06Label change
Label change: OMALIZUMAB (BLA103976)
Evidence ↗
2024-02-16Indication expansionMulti-authority
Indication expansion: OMALIZUMAB (BLA103976)
Evidence ↗
2023-08-17Supplemental approvalMulti-authority
Supplemental approval: OMALIZUMAB (BLA103976)
Evidence ↗
emaEuropean Medicines Agency· 3 events
2026-09-18CHMP positive opinion
CHMP positive opinion: Adcomfo (EMA)

Indication: Treatment of asthma, chronic rhinosinusitis with nasal polyps (CRSwNP) and chronic spontaneous urticaria (CSU)

Evidence ↗
2024-05-16ApprovalMulti-authority
Approval: Omlyclo (EMA)
Indication: Allergic asthma Omlyclo is indicated in adults, adolescents and children (6 to <12 years of age).  Omlyclo treatment should only be considered for patients with convincingShow full indication

Allergic asthma Omlyclo is indicated in adults, adolescents and children (6 to <12 years of age).  Omlyclo treatment should only be considered for patients with convincing IgE (immunoglobulin E) mediated asthma (see section 4.2). Adults and adolescents (12 years of age and older) Omlyclo is indicated as add-on therapy to improve asthma control in patients with severe persistent allergic asthma who have a positive skin test or in vitro reactivity to a perennial aeroallergen and who have reduced lung function (FEV1 <80%) as well as frequent daytime symptoms or night-time awakenings and who have had multiple documented severe asthma exacerbations despite daily high-dose inhaled corticosteroids, plus a long-acting inhaled beta2-agonist. Children (6 to <12 years of age) Omlyclo is indicated as add-on therapy to improve asthma control in patients with severe persistent allergic asthma who have a positive skin test or in vitro reactivity to a perennial aeroallergen and frequent daytime symptoms or night-time awakenings and who have had multiple documented severe asthma exacerbations despite daily high-dose inhaled corticosteroids, plus a long-acting inhaled beta2-agonist. Chronic rhinosinusitis with nasal polyps (CRSwNP) Omlyclo is indicated as an add-on therapy with intranasal corticosteroids (INC) for the treatment of adults (18 years and above) with severe CRSwNP for whom therapy with INC does not provide adequate disease control. Chronic spontaneous urticaria (CSU) Omlyclo is indicated as add-on therapy for the treatment of chronic spontaneous urticaria in adult and adolescent (12 years and above) patients with inadequate response to H1 antihistamine treatment.

Evidence ↗
2005-10-25ApprovalMulti-authority
Approval: Xolair (EMA)
Indication: Allergic asthma Xolair is indicated in adults, adolescents and children (6 to <12 years of age). Xolair treatment should only be considered for patients with convincingShow full indication

Allergic asthma Xolair is indicated in adults, adolescents and children (6 to <12 years of age). Xolair treatment should only be considered for patients with convincing IgE (immunoglobulin E) mediated asthma. Adults and adolescents (12 years of age and older) Xolair is indicated as add-on therapy to improve asthma control in patients with severe persistent allergic asthma who have a positive skin test or in vitro reactivity to a perennial aeroallergen and who have reduced lung function (FEV1 <80%) as well as frequent daytime symptoms or night-time awakenings and who have had multiple documented severe asthma exacerbations despite daily high-dose inhaled corticosteroids, plus a long-acting inhaled beta2-agonist. Children (6 to <12 years of age) Xolair is indicated as add-on therapy to improve asthma control in patients with severe persistent allergic asthma who have a positive skin test or in vitro reactivity to a perennial aeroallergen and frequent daytime symptoms or night-time awakenings and who have had multiple documented severe asthma exacerbations despite daily high-dose inhaled corticosteroids, plus a long-acting inhaled beta2-agonist. Chronic rhinosinusitis with nasal polyps (CRSwNP) Xolair is indicated as an add-on therapy with intranasal corticosteroids (INC) for the treatment of adults (18 years and above) with severe CRSwNP for whom therapy with INC does not provide adequate disease control. Chronic spontaneous urticaria (CSU) Xolair is indicated as add-on therapy for the treatment of chronic spontaneous urticaria in adult and adolescent (12 years and above) patients with inadequate response to H1 antihistamine treatment.

Evidence ↗
mhraMedicines and Healthcare products Regulatory Agency· 1 event
2014-12-11Safety communicationSafety
Drug Safety Update: Omalizumab: potential risk of arterial thrombotic events
Evidence ↗

Data from the U.S. Food and Drug Administration (U.S. Food and Drug Administration), public domain (CC0).

Contains information from the European Medicines Agency (European Medicines Agency), © EMA, reused under CC BY 4.0.

Contains public sector information from the Medicines and Healthcare products Regulatory Agency (MHRA) licensed under the Open Government Licence (OGL v3).

Clinical trials

170 trials

The current development programme across all trial phases — status mix, phase distribution and the late-stage studies shaping the evidence base.

Development programme
CLINICALTRIALS.GOV · LIVE REGISTRY
170
registered trials across all phases
LATEST COMPLETION 2025
13
Active studies
8
Recruiting
102
Late-stage (III+)
127
Completed
30
Discontinued
PHASE DISTRIBUTIONn = 170
Early Phase 13Phase 120Phase 1 / 25Phase 240Phase 2 / 35Phase 336Phase 451Phase N / A10

Late-stage studies

Phase III+ trials still open or recently active — where late-stage evidence is being generated.

Recent completions

Trials that read out recently, adding to the completed evidence base.

Research activity

7 papers

Key research shaping understanding of this drug, combining the latest publications with the most influential evidence.

Publications over time
20112024
Most influential
Recent papers

Omalizumab for the Treatment of Multiple Food Allergies.

The New England journal of medicine · 2024 · 231 cites

Omalizumab for treatment of idiopathic angioedema.

Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2022 · 10 cites
Major research themes7
Anti-Allergic Agents2Desensitization, Immunologic2Omalizumab2Angioedema1Chronic Urticaria1Food Hypersensitivity1Urticaria1
Journals, researchers & institutions
Top journals
  • The Journal of allergy and clinical immunology3
  • The New England journal of medicine2
  • Allergy1
  • Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology1
Leading researchers
  • Calatroni A3
  • Togias A3
  • Busse WW2
  • Chinthrajah RS2
  • Gergen PJ2
  • Gern JE2
  • Gruchalla RS2
  • Kattan M2
Leading institutions
free-text, unnormalised
  • University of Wisconsin School of Medicine and Public Health3
  • Johns Hopkins University School of Medicine2
  • National Institute of Allergy and Infectious Diseases2
  • Ann and Robert H. Lurie Children's Hospital of Chicago1
  • Boston University School of Medicine1
  • Children's Hospital Colorado and University of Colorado School of Medicine1
References & data sources
  • RxNorm (U.S. National Library of Medicine) — drug identity
  • ChEMBL (EMBL-EBI) & UniProt — pharmacology and targets
  • Europe PMC — research literature
  • ClinicalTrials.gov — clinical trials
  • Regulatory event sources are credited in the Regulatory Timeline above.