OMLYCLO was compared with Xolair® in a double-blind, randomized, active-controlled phase 3 study of adult and pediatric patients ≥12 years of age with chronic spontaneous urticaria (CSU)1
Patients received OMLYCLO or Xolair for up to 24 weeks and were followed through week 40.1
All patients continued treatment with one second-generation H1 antihistamine throughout the study.1
Inclusion criteria: Patients aged ≥12 years with documented CSU for ≥6 months and hives and itching for ≥6 consecutive weeks despite current H1 antihistamine use.1
- Primary endpoint: Change from baseline in ISS7 at week 12 (pre-dose) in the OMLYCLO and Xolair 300-mg groups1
- Additional endpoints: Relative potency vs Xolair*; ISS7 change at weeks 8 and 24; time to MID† by week 12; clinical and symptom outcomes at weeks 8, 12, and 24, including MID in ISS7, UAS7, HSS7, and rescue use; hives severity; and angioedema-free days1
- Treatment period 1 (weeks 0–12): Randomized to OMLYCLO or Xolair at 150 mg or 300 mg1
- Treatment period 2 (weeks 12–24): Xolair 300-mg patients were re-randomized to continue Xolair or switch to OMLYCLO; OMLYCLO 300-mg patients maintained their dosage; 150-mg groups escalated to 300 mg1
- Follow-up: Visits every 4 weeks through week 401
*Defined as the dose of OMLYCLO that produced the same biological response (in terms of change from baseline in ISS7 at week 12) as one unit of the dose of Xolair.1
†Reduction of ≥5 points from baseline.1
H1, histamine 1; HSS7, weekly hives severity score; ISS7, weekly itch severity score; MID, minimally important difference; UAS7, weekly urticaria activity score.
Reference: 1. Saini SS, Maurer M, Dytyatkovska Y, et al. CT-P39 compared with reference omalizumab in chronic spontaneous urticaria: results from a double-blind, randomized, active-controlled, phase 3 study. Allergy. 2025;80(7):2167-2177. doi:10.1111/all.16446
OMLYCLO and Xolair® showed therapeutic equivalence in CSU1
In the phase 3 study, OMLYCLO demonstrated therapeutic equivalence to Xolair for the primary endpoint of change from baseline in ISS7 at week 121
- Change from baseline in weekly ISS7 at week 12 in the 300-mg treatment groups (US analysis, mITT population) was assessed as the primary endpoint1*
- OMLYCLO demonstrated therapeutic equivalence to Xolair, with a similar reduction in weekly ISS7 at week 12 (treatment difference 0.70; 90% CI −0.22 to 1.63), within the predefined equivalence margin1
- Based partly on the findings of this study, OMLYCLO has been approved as biosimilar to Xolair across all Xolair indications, including moderate to severe persistent asthma in adults and pediatric patients, chronic rhinosinusitis with nasal polyps (CRSwNP) in adults, and IgE-mediated food allergy in adult and pediatric patients1
*ISS7 is a patient-reported measure of itch severity recorded twice a day. Scores are calculated at the end of 7 days (range 0-21). Higher scores indicate greater itch severity.2
CI, confidence interval; IgE, immunoglobulin E; ISS7, weekly itch severity score; mITT, modified intent-to-treat population.
Patients receiving OMLYCLO and Xolair achieved similar UAS7 response rates1*†
- OMLYCLO and Xolair demonstrated comparable clinical response, with similar proportions of patients achieving well-controlled disease (UAS7 ≤6) and complete response (UAS7=0) at week 121
*When studied in patients with chronic spontaneous urticaria.
†UAS7 is a patient-reported daily measure of hives and itch severity. Scores are calculated at the end of 7 days (range 0-42). Lower scores indicate less disease activity. Results shown for the 300-mg treatment groups at week 12 (mITT population).1,2
mITT, modified intent-to-treat population; UAS7, weekly urticaria activity score.
Patients who switched from Xolair to OMLYCLO maintained disease control as defined by UAS7 ≤61*
- Patients who switched from Xolair to OMLYCLO maintained clinical response, with similar or numerically higher UAS7 response rates compared with continued treatment1
*When studied in patients with chronic spontaneous urticaria.
†Responses assessed at week 24 during TP2 (mITT population).1
mITT, modified intent-to-treat population; TP2, treatment period 2; UAS7, weekly urticaria activity score.
Improvements in disease activity were maintained through week 403*
- Improvements in disease activity observed during treatment were sustained through the 40-week follow-up, with similar reductions in UAS7 observed for OMLYCLO and Xolair across treatment pathways3
*When studied in patients with chronic spontaneous urticaria.
†UAS7 is a patient-reported daily measure of hives and itch severity. Scores are calculated at the end of 7 days (range 0-42). Lower scores indicate less disease activity. Values represent mean change from baseline (SD) at week 40 in the mITT set, with mITT-TP2 for re-randomized patients.2,3
‡A 16-week follow-up analysis occurred after patients completed the initial 24 weeks of treatment. Patients were re-randomized from Xolair (n=205) into switching (n=96) and maintenance (n=96) arms at week 12.3
mITT, modified intent-to-treat population; SD, standard deviation; TP2, treatment period 2; UAS7, weekly urticaria activity score.
OMLYCLO delivered the same drug exposure as Xolair1,4*
- OMLYCLO provided comparable drug exposure to Xolair across doses and after treatment switch1,4
TREATMENT PERIOD 1 OMLYCLO 300 mg OMLYCLO 150 mg Xolair 300 mg Xolair 150 mg
TREATMENT PERIOD 2 OMLYCLO 300 mg maintenance OMLYCLO 150 mg to OMLYCLO 300 mg Xolair 300 mg maintenance Xolair 150 mg to Xolair 300 mg Switched from Xolair 300 mg to OMLYCLO 300 mg
*When studied in patients with chronic spontaneous urticaria.
Increased allergy tolerance threshold vs placebo across multiple foods5
In a double-blind, randomized, placebo-controlled phase 3 trial, participants with peanut allergy and at least 2 additional food allergies received omalizumab or placebo, and successful consumption of prespecified allergen doses at week 16 was assessed by oral food challenge.5 Omalizumab is the same active substance found in OMLYCLO. Therefore, the established efficacy in this study provides the clinical foundation for OMLYCLO in multi-food allergy.2,5,6
Omalizumab increased successful consumption of prespecified threshold doses at week 16 vs placebo5*
| Endpoint | Omalizumab | Placebo |
|---|---|---|
| Peanut† (n=177) | 67% | 7% |
| Cashew‡ (n=99) | 41% | 3% |
| Egg‡ (n=71) | 67% | 0% |
| Milk‡ (n=62) | 66% | 10% |
| Walnut§ (n=78) | 64% | 13% |
| Hazelnut§ (n=24) | 65% | 14% |
| Wheat§ (n=20) | 75% | 13% |
- Reported P values were as follows: peanut, P<0.001; cashew, P<0.001; egg, P<0.001; and milk, P<0.001. No P values were reported for walnut, hazelnut, or wheat5
- Omalizumab significantly increased allergen threshold doses across multiple foods vs placebo at week 16. The primary endpoint was consumption of a single dose of at least 600 mg peanut protein without dose-limiting symptoms; the key secondary endpoints were single doses of at least 1000 mg of cashew, milk, and egg protein without dose-limiting symptoms5
Omalizumab, the substance found in OMLYCLO, is an effective treatment option for multi-food allergy.2,5,6
*For all food allergies except peanut, the threshold dose tolerated without dose-limiting symptoms was ≥1000 mg; peanut dose was ≥600 mg.5
†Primary endpoint; ‡Primary secondary endpoint; §Other secondary endpoint.
Treatment with omalizumab when compared with oral immunotherapy7
In stage 2 of the same study, a randomized, intent-to-treat analysis compared omalizumab with omalizumab-facilitated multi-allergen oral immunotherapy (OIT).7
Efficacy and tolerability of omalizumab vs multi-allergen OIT7
| Outcome | Omalizumab | Multi-allergen OIT |
|---|---|---|
| Tolerance of ≥2000 mg for each of the 3 foods* | 36% | 19% |
| Completed stage 2 | 88% | 51% |
| Serious AEs | 0% | 30.5% |
| AEs leading to discontinuation | 0% | 22% |
| Epinephrine-treated AEs | 6.9% | 37.3% |
- Omalizumab was superior to multi-allergen OIT for the protocol-defined primary endpoint (36% vs 19%; OR 2.6; P=0.031). Superiority was also reported for success across 2 or more foods (P=0.004)7
- Omalizumab was associated with fewer adverse events, discontinuations, and epinephrine-treated adverse events than multi-allergen OIT7
- Omalizumab is the same active substance found in OMLYCLO. Therefore, the established efficacy in this study provides the clinical foundation for OMLYCLO in multi-food allergy compared with OIT2,6,7
*Primary endpoint.
AEs, adverse events.