A Phase 3 interventional study of omalizumab and omalizumab in Chronic Spontaneous Urticaria, sponsored by Novartis Pharmaceuticals. Completed at 35 sites in 8 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-09-13.
Sponsored by Novartis Pharmaceuticals · Phase 3, Interventional, and Treatment
This trial assessed the efficacy of optimized re-treatment therapy with omalizumab (150mg or 300mg) after relapse, in participants with Chronic Spontaneous Urticaria who were clinically well-controlled following their first course of treatment with omalizumab (150mg or 300mg). The study also assessed the benefit of uptitrating to 300mg dose in participants who were not well-controlled following their initial course of treatment with omalizumab 150mg, as well as the benefit of treatment extension of those patients who were not well-controlled following their initial course of treatment with omalizumab 300mg.
The study consisted of 5 phases.
Phase 1 (Screening): At the first visit (Screening Visit), the participant was provided informed consent and then completed all screening visit assessments. During this visit, all CIU/CSU treatments taken by the participant were documented. Any protocol-defined prohibited CIU/CSU treatments were stopped at this visit, and the participant underwent a wash-out period of 1-5weeks (refer to study protocol for medication wash-out times) prior to Phase 2 Visit1. Only non-sedating H1- antihistamines, at locally-approved dosages, were allowed to be continued during the Screening Period and throughout the rest of the study. All participants also needed to complete daily diary during the entire screening period.
Phase 2 (Initial Dosing Period): Following completion of Phase 1, eligible participants were randomly assigned (in a 4:3 ratio) to either Group A or Group B. Participants in Group A were treated with omalizumab 150mg by subcutaneous (SC) injection every 4 weeks during the 24-week Phase 2 (Initial Dosing Period), while participants in Group B were treated with omalizumab 300mg every 4 weeks during this period. Randomization to treatment groups was stratified at Phase 2 Visit 1 by geographic location of the study site (i.e. Canada or Latin America), baseline presence/absence of angioedema and baseline UAS7 score (collected at Phase 2 Visit 1). At the end of Phase 2, all participants with a UAS7 score ≤ 6 entered Phase 3 (Study Treatment Withdrawal Period). Group A participants who had a UAS7 > 6 at any visit of Phase 2 starting at Week 8 (Phase2-Visit3) skipped Phase 3 and moved directly to Phase 4 (Second Dosing Period) and received 300 mg Omalizumab (step-up). Group B participants who had a UAS7 >6 at the end of Phase 2 skipped Phase 3 and moved directly to Phase 4.
Phase 3 (Study Treatment Withdrawal Period): During Phase 3 (Study Treatment Withdrawal Period), no study treatment (omalizumab) was given and participants continued to visit the study center at 4-week intervals (to a maximum of 8 weeks). If a UAS7 score ≥16 was observed during Phase 3 (Study Treatment Withdrawal Period), the participant moved directly to Phase 4 (Second Dosing Period). If a participant completed the full 8 weeks of Phase 3 (Study Treatment Withdrawal Period) with a UAS7 score \<16, the participant was moved directly to Phase 5 (Follow-up Period).
Phase 4 (Second Dosing Period)
Phase 5 (Follow-up Period)
During Phase 5 (Follow-up Period), participants continued to only receive non-sedating H1- antihistamines at approved dosages. Omalizumab was not allowed to be administered during this period.
237 studies on the registry are indexed under Urticaria; 26 are open to participants now.
This study's enrollment of 314 is above the median of 61 across 174 interventional studies indexed under Urticaria.
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Key Inclusion Criteria:
Key Exclusion Criteria:
Participants received 150mg omalizumab every 4 weeks during the initial dosing phase (24 weeks). A second dosing period (at 150mg or 300mg) may have been implemented based on protocol-defined assessment criteria.
Drug: omalizumab
Participants received 300mg omalizumab every 4 weeks during the initial dosing phase (24 weeks). A second dosing period may have been implemented based on protocol-defined assessment criteria.
Drug: omalizumab
150mg omalizumab via sub-cutaneous injection once every 4 weeks
300mg omalizumab via sub-cutaneous injection once every 4 weeks
Number of Participants Who Were Clinically Well-controlled (UAS7<=6) After the Initial Dosing Period, Relapsed (UAS7>=16) When Treatment Was Discontinued, and Who Achieved a UAS7 Score <=6 at the End of the Second Dosing Period (Retreatment A2 and B2)
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the last 7 days of the second dosing period.
Time frame: Last 7 days of second dosing period, 44 weeks
The Difference in Urticaria Activity Score Over 7 Days (UAS7) Between the Start and End of the Second Dosing Period, in Participants That Step-up Treatment Dose During the Initial Dosing Period (Step-up A3)
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the 7 days prior to the second dosing period, and the last 7 days of the second dosing period. A negative change indicates improvement.
Time frame: 7 days prior to start of second dosing period and last 7 days of Second Dosing Period
Number of Participants With Urticaria Activity Score Over 7 Days (UAS7)≤6 at the End of the Second Dosing Period, in Participants Who Stepped-up Treatment Dosing (Step-up A3)
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the last 7 days of the second dosing period.
Time frame: Last 7 days of the second dosing period
Time to Relapse (Urticaria Activity Score Over 7 Days (UAS7) ≥ 16) After Drug Withdrawal in Participants Who Responded to Initial Dosing Period (Retreatment A2 and B2)
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the time between end of initial dosing period to first occurence of UAS7 ≥ 16 will be evaluated.
Time frame: study drug withdrawal period, weeks 24 through 32
Difference in Urticaria Activity Score Over 7 Days (UAS7) Between End of Initial Dosing Period and the End of the Second Dosing Period, in Group B3 Participants Who Did Not Respond to the Initial Dosing Period
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the last 7 days of the initial dosing period and the last 7 days of the second dosing period. A negative change indicates improvement.
Time frame: last 7 days of initial dosing period, week 24, and last 7 days of second dosing period, week 36
The Change in Urticaria Activity Score Over 7 Days (UAS7) From Baseline to Week 24 in Group B Participants
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the 7-day period prior to Baseline visit and the last 7 days prior to the week 24 visit of initial dosing period. A negative change from baseline indicates improvement.
Time frame: 7 days prior to Baseline visit, and last 7 days prior to week 24 of the initial dosing period
Change in Urticaria Activity Score Over 7 Days (UAS7) Between Baseline and End of Second Dosing Period
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the 7 days before Baseline and the last 7 days of the second dosing period.
Time frame: 7 days prior to Baseline visit, and last 7 days of second dosing period
The Number of Participants Who Remained Well-controlled (UAS7<=6) or Who Had Achieved UAS=0 at Phase 4 (Second Dosing Period) Week 8 During Retreatment After Being Well Controlled or Achieving UAS7=0 at Phase 2 (Initial Dosing Period) Week 8
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from week 8 of initial dosing phase and week 8 of second dosing phase.
Time frame: Week 8 of initial dosing phase and week 8 of second dosing phase
| Milestone | Omalizumab 150mg (A) | Omalizumab 300mg (B) |
|---|---|---|
| Started | 178 | 136 |
| Completed | 152 | 119 |
| Not completed | 26 | 17 |
| Withdrew: Withdrawal by subject | 5 | 8 |
| Withdrew: Protocol violation | 9 | 4 |
| Withdrew: Pregnancy | 1 | 2 |
| Withdrew: Lost to follow-up | 3 | 1 |
| Withdrew: Lack of efficacy | 4 | 1 |
| Withdrew: Adverse event | 1 | 1 |
| Withdrew: Participant moved back to home country | 1 | 0 |
| Withdrew: Withdrew due to being out of the country | 1 | 0 |
| Withdrew: Participant moved out of province | 1 | 0 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the last 7 days of the second dosing period.
| Participants | All Retreatment (A2&B2) | Retreatment (A2) | Retreatment (B2) |
|---|---|---|---|
| Number of Participants Who Were Clinically Well-controlled (UAS7<=6) After the Initial Dosing Period, Relapsed (UAS7>=16) When Treatment Was Discontinued, and Who Achieved a UAS7 Score <=6 at the End of the Second Dosing Period (Retreatment A2 and B2) | 43 | 10 | 33 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the 7 days prior to the second dosing period, and the last 7 days of the second dosing period. A negative change indicates improvement.
| score on a scale | Step-up Treatment Group (A3) |
|---|---|
| The Difference in Urticaria Activity Score Over 7 Days (UAS7) Between the Start and End of the Second Dosing Period, in Participants That Step-up Treatment Dose During the Initial Dosing Period (Step-up A3) | -9.5 ± 10.54 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the last 7 days of the second dosing period.
| Participants | Step-up Treatment Group (A3) |
|---|---|
| Number of Participants With Urticaria Activity Score Over 7 Days (UAS7)≤6 at the End of the Second Dosing Period, in Participants Who Stepped-up Treatment Dosing (Step-up A3) | 59 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the time between end of initial dosing period to first occurence of UAS7 ≥ 16 will be evaluated.
| Weeks | All Retreatment (A2&B2) | Retreatment (A2) | Retreatment (B2) |
|---|---|---|---|
| Time to Relapse (Urticaria Activity Score Over 7 Days (UAS7) ≥ 16) After Drug Withdrawal in Participants Who Responded to Initial Dosing Period (Retreatment A2 and B2) | 4.7 ± 2.37 | 4.8 ± 2.70 | 4.7 ± 2.31 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the last 7 days of the initial dosing period and the last 7 days of the second dosing period. A negative change indicates improvement.
| score on a scale | Extended Treatment (B3) |
|---|---|
| Difference in Urticaria Activity Score Over 7 Days (UAS7) Between End of Initial Dosing Period and the End of the Second Dosing Period, in Group B3 Participants Who Did Not Respond to the Initial Dosing Period | -2.0 ± 10.50 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the 7-day period prior to Baseline visit and the last 7 days prior to the week 24 visit of initial dosing period. A negative change from baseline indicates improvement.
| score on a scale | Omalizumab 300mg (B) |
|---|---|
| The Change in Urticaria Activity Score Over 7 Days (UAS7) From Baseline to Week 24 in Group B Participants | -23.8 ± 10.08 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from the 7 days before Baseline and the last 7 days of the second dosing period.
| score on a scale | Omalizumab 150mg (A) | Omalizumab 300mg (B) | Overall (A&B) |
|---|---|---|---|
| Change in Urticaria Activity Score Over 7 Days (UAS7) Between Baseline and End of Second Dosing Period | -18.7 ± 11.66 | -23.0 ± 10.92 | -20.6 ± 11.53 |
The UAS7 is a 7-day composite self-reported evaluation of itch (daily score 0-3) plus number of hives (daily score 0-3). The worst possible daily UAS score is 6, and the worst possible UAS7 score is 42. For this outcome, the participant's self-reported UAS7 score will be drawn from week 8 of initial dosing phase and week 8 of second dosing phase.
| Participants | All Retreatment (A2&B2) | Retreatment (A2) | Retreatment (B2) |
|---|---|---|---|
| UAS7<=6 at week 8 of the initial dosing period | 43 | 12 | 31 |
| UAS7=0 at week 8 of the initial dosing period | 34 | 10 | 24 |
| UAS7<=6 at week 8 of the second dosing period | 36 | 9 | 27 |
| UAS7=0 at week 8 of the second dosing period | 23 | 5 | 18 |
Non-serious events are listed at a 0.0001% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Omalizumab 150 mg (A) | — | 2/178 (1.1%) | 119/178 (66.9%) |
| Maintained Response (A1) | — | 0/15 (0%) | 9/15 (60%) |
| Retreatment (A2) | — | 0/12 (0%) | 10/12 (83.3%) |
| Step-up Treatment Group (A3) | — | 2/141 (1.4%) | 94/141 (66.7%) |
| Omalizumab 300 mg (B) | — | 6/136 (4.4%) | 109/136 (80.1%) |
| Maintained Response(B1) | — | 2/44 (4.5%) | 32/44 (72.7%) |
| Retreatment (B2) | — | 2/44 (4.5%) | 37/44 (84.1%) |
| Extended Treatment (B3) | — | 1/43 (2.3%) | 37/43 (86%) |
| Event | Omalizumab 150 mg (A) | Maintained Response (A1) | Retreatment (A2) | Step-up Treatment Group (A3) | Omalizumab 300 mg (B) | Maintained Response(B1) | Retreatment (B2) | Extended Treatment (B3) |
|---|---|---|---|---|---|---|---|---|
| Porphyria acuteCongenital, familial and genetic disorders | 0/178 | 0/15 | 0/12 | 0/141 | 1/136 | 0/44 | 0/44 | 1/43 |
| Cardiac failureCardiac disorders | 0/178 | 0/15 | 0/12 | 0/141 | 1/136 | 1/44 | 0/44 | 0/43 |
| Maternal exposure during pregnancyInjury, poisoning and procedural complications | 1/178 | 0/15 | 0/12 | 1/141 | 2/136 | 0/44 | 1/44 | 0/43 |
| Pelvic fractureInjury, poisoning and procedural complications | 0/178 | 0/15 | 0/12 | 0/141 | 1/136 | 0/44 | 1/44 | 0/43 |
| Invasive ductal breast carcinomaNeoplasms benign, malignant and unspecified (incl cysts and polyps) | 0/178 | 0/15 | 0/12 | 0/141 | 1/136 | 1/44 | 0/44 | 0/43 |
| Pulmonary embolismRespiratory, thoracic and mediastinal disorders | 0/178 | 0/15 | 0/12 | 0/141 | 1/136 | 0/44 | 1/44 | 0/43 |
| Cholecystitis chronicHepatobiliary disorders | 1/178 | 0/15 | 0/12 | 1/141 | 0/136 | 0/44 | 0/44 | 0/43 |
| Event | Omalizumab 150 mg (A) | Maintained Response (A1) | Retreatment (A2) | Step-up Treatment Group (A3) | Omalizumab 300 mg (B) | Maintained Response(B1) | Retreatment (B2) | Extended Treatment (B3) |
|---|---|---|---|---|---|---|---|---|
| NasopharyngitisInfections and infestations | 29/178 | 3/15 | 3/12 | 20/141 | 24/136 | 5/44 | 10/44 | 8/43 |
| CoughRespiratory, thoracic and mediastinal disorders | 9/178 | 2/15 | 3/12 | 4/141 | 6/136 | 3/44 | 1/44 | 2/43 |
| HeadacheNervous system disorders | 23/178 | 2/15 | 2/12 | 18/141 | 19/136 | 5/44 | 5/44 | 9/43 |
| Upper respiratory tract infectionInfections and infestations | 9/178 | 2/15 | 2/12 | 5/141 | 15/136 | 4/44 | 8/44 | 2/43 |
| Oedema peripheralGeneral disorders | 5/178 | 2/15 | 0/12 | 3/141 | 2/136 | 0/44 | 2/44 | 0/43 |
| NauseaGastrointestinal disorders | 9/178 | 1/15 | 0/12 | 8/141 | 8/136 | 2/44 | 1/44 | 5/43 |
| UrticariaSkin and subcutaneous tissue disorders | 9/178 | 0/15 | 0/12 | 8/141 | 11/136 | 3/44 | 3/44 | 5/43 |
| Back painMusculoskeletal and connective tissue disorders | 7/178 | 1/15 | 1/12 | 5/141 | 7/136 | 2/44 | 1/44 | 4/43 |
| RhinitisInfections and infestations | 3/178 | 0/15 | 1/12 | 2/141 | 5/136 | 1/44 | 4/44 | 0/43 |
| SinusitisInfections and infestations | 10/178 | 1/15 | 1/12 | 8/141 | 6/136 | 4/44 | 1/44 | 1/43 |
| Age, Continuous(Years) | Omalizumab 150mg (A) | Omalizumab 300mg (B) | Total |
|---|---|---|---|
| Mean | 46.7 ± 14.03 | 45.8 ± 13.60 | 46.3 ± 13.83 |
| Sex: Female, Male(Participants) | Omalizumab 150mg (A) | Omalizumab 300mg (B) | Total |
|---|---|---|---|
| Female | 130 | 99 | 229 |
| Male | 48 | 37 | 85 |
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Novartis Pharmaceuticals