Please assess the completion status of the following clinical trial:

Trial Title: Study to Investigate the Efficacy and Safety of QGE031 in Adolescent Patients With Chronic Spontaneous Urticaria (CSU)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Parent or legal guardian's written informed consent and child's assent, if appropriate, must be obtained before any study related activity or assessment is performed. Of note, if the subject reaches age of consent (age as per local law) during the study, they will also need to sign the corresponding study ICF (Informed Consent Form) at the next study visit.~* Male and female adolescent patients aged ≥ 12 to \<18 years at the time of screening.~* Diagnosis of CSU refractory to approved doses of H1-antihistamines at the time of randomization, as defined by all of the following:~  * The presence of itch and hives for at least 6 consecutive weeks at any time prior to enrollment despite current use of non-sedating H1-antihistamines during this time period~ * UAS7 score (range 0 - 42) ≥ 16 and HSS7 (range 0 - 21) ≥ 8 during 7 days prior to randomization (Day 1)~ * In-clinic UAS ≥ 4 on at least one of the screening visit days or Day 1 or a medical record of the presence of hives (confirmed and documented by a physician); patients must have been on H1-antihistamines for treatment of CSU at the time of in-clinic UAS at screening visit and/or time of the medical record of hives (for at least 3 days prior to the in-clinic UAS or medical record) • Patients must have been on H1-antihistamines for treatment of CSU for at least the 3 consecutive days immediately prior to the first screening visit and must have documented current use on the day of the initial screening visit~ * CSU diagnosis for ≥ 6 months~* Willing and able to complete a daily symptom e-Diary for the duration of the study and adhere to the study visit schedules.~* Demonstration of compliance with the e-Diary: patients should not have had any missing e-Diary entries in the 7 days prior to randomization. Re-screening may be considered.~Exclusion Criteria:~* Clearly defined underlying etiology for chronic urticarias other than CSU. This includes the following:~  * Inducible urticaria: urticaria factitia, cold-, heat-, solar-, pressure-, delayed pressure-, aquagenic-, cholinergic-, or contact-urticaria~ * Diseases with possible symptoms of urticaria or angioedema such as urticarial vasculitis, erythema multiforme, cutaneous mastocytosis (urticaria pigmentosa), and hereditary or acquired angioedema (e.g., due to C1 inhibitor deficiency)~* Any other skin disease associated with chronic itching that might confound the study evaluations and results (e.g. atopic dermatitis, bullous pemphigoid, dermatitis herpetiformis etc.)~* Previous exposure to omalizumab~* History of anaphylaxis

- Gender: ALL
- Minimum Age: 12 Years
- Maximum Age: 17 Years
- Healthy Volunteers: f

Study Arms:
- Ligelizumab 120 mg (Type: EXPERIMENTAL): Participants received a dose of ligelizumab 120 mg (high dose) which consisted of one injection of 1 ml of ligelizumab 120 mg/ 1 ml vial every 4 weeks from Day 1 to Week 20 (inclusive).
- Ligelizumab 24 mg (Type: EXPERIMENTAL): Participants received a dose of ligelizumab 24 mg (low dose) which consisted of one injection of 0.2 ml of ligelizumab 120 mg/ 1 ml vial every 4 weeks from Day 1 to Week 20 (inclusive).
- Placebo + Ligelizumab 120 mg (Type: PLACEBO_COMPARATOR): Participants received Placebo which consisted of one injection of 1 ml placebo every 4 weeks from Day 1 to Week 8 (inclusive). From week 12 to week 20 (inclusive), participants received a dose of ligelizumab 120 mg (high dose) which consisted of one injection of 1 ml of ligelizumab 120 mg/ 1 ml vial.

Based on this trial design, predict the completion outcome and termination type (if applicable).

Answer: outcome: complete