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A Proof-of-concept Study to Evaluate the Efficacy and Safety of Rozanolixizumab to Treat Adult Study Participants With Severe Fibromyalgia Syndrome

A Randomized, Double-Blind, Placebo-Controlled, Multicenter, Phase 2A, Proof-Of-Concept Study to Evaluate the Efficacy and Safety of Rozanolixizumab to Treat Adult Study Participants With Severe Fibromyalgia Syndrome

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05643794
Enrollment
63
Registered
2022-12-09
Start date
2022-12-21
Completion date
2024-07-09
Last updated
2025-07-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Fibromyalgia

Keywords

Phase 2, Fibromyalgia, rozanolixizumab

Brief summary

The purpose of the study is to evaluate efficacy and safety of rozanolixizumab to treat adult study participants with severe fibromyalgia syndrome (FMS).

Interventions

DRUGrozanolixizumab

Study participants will receive rozanolixizumab during the dosing periods as pre-defined.

OTHERPlacebo

Study participants will receive Placebo during the dosing periods as pre-defined.

Sponsors

UCB Biopharma SRL
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Study participant must be ≥18 years and ≤70 years of age at the time of signing the informed consent form (ICF) * Study participant with a diagnosis of fibromyalgia as defined by the 2016 Revisions to the 2010/2011 fibromyalgia diagnostic criteria (American College of Rheumatology Preliminary Diagnostic Criteria) plus the following characteristics during the Screening Period: 1. Brief Pain Inventory-short form (BPI-SF) interference score ≥6. 2. Study participant has been diagnosed with fibromyalgia syndrome (FMS) for at least 6 months. 3. Study participant has been having FMS symptomatology for at least 2 years before enrollment - Capable of giving signed informed consent as described in the Protocol which includes compliance with the requirements and restrictions listed in the ICF and in the Study Protocol

Exclusion criteria

* Study participant has been diagnosed with fibromyalgia syndrome (FMS) for \>15 years * Study participant has any systemic autoimmune inflammatory disease * Study participant has any medical or psychiatric or separate chronic pain condition that, in the opinion of the investigator, could jeopardize or would compromise the study participant's ability to participate in this study or the ability to assess FMS-related pain * Study participant has severe renal impairment, defined as estimated glomerular filtration rate \<30 mL/min/1.73 m\^2, (calculated using Modification of Diet in Renal Disease \[MDRD\] study equation), at Screening visit * Study participant has a clinically important active infection (including unresolved or not adequately treated infection) as assessed by the investigator * Study participant has chronic inflammatory demyelinating polyneuropathy * Study participant has a current or medical history of primary immunodeficiency * Study participant is pregnant or lactating * Study participant * Has suicide attempt in the past 2 years (including an active attempt, interrupted attempt, or aborted attempt), * OR had suicidal ideation with at least some intent to act in the past 6 months as indicated by a positive response (Yes) to either Question 4 or Question 5 of the Columbia Suicide Severity Rating Scale (C-SSRS) at Screening or Baseline (Visit 3); * OR is otherwise judged clinically to be at a serious suicidal risk based on the investigator's judgment

Design outcomes

Primary

MeasureTime frameDescription
Brief Pain Inventory Short Form (BPI-SF) Average Interference Score at 12 Weeks of TreatmentAt 12 weeks of treatmentThe BPI-SF was a self-administered questionnaire used to evaluate the severity of a study participant's pain and the impact of this pain on the study participant's daily functioning. The BPI-SF assesses for the location of pain, pain intensity and functional interference from pain. The 7 BPI-SF interference items included: general activity, mood, walking ability, normal work (including housework), relations with other people, sleep, and enjoyment of life. Each item was rated on a 0 (did not interfere) to 10 (completely interfere) scale with a recall period of 24 hours. The BPI-SF interference score ranges 0-70. Higher scores indicated greater interference.

Secondary

MeasureTime frameDescription
Number of Participants With TEAEs Leading to Withdrawal of IMPFrom Baseline till end of Safety Follow-up (up to Week 33)An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. A TEAE was defined as any AE with an onset date on or after the first dose of IMP in Run-In and on or before the earliest of the following: the last date of infusion (including Run-Out) +56 days, final contact date, or death.
Brief Pain Inventory Short Form (BPI-SF) Average Interference Score at 24 Weeks of TreatmentAt 24 weeks of treatmentThe BPI-SF was a self-administered questionnaire used to evaluate the severity of a study participant's pain and the impact of this pain on the study participant's daily functioning. The BPI-SF assesses for the location of pain, pain intensity and functional interference from pain. The 7 BPI-SF interference items included: general activity, mood, walking ability, normal work (including housework), relations with other people, sleep, and enjoyment of life. Each item was rated on a 0 (did not interfere) to 10 (completely interfere) scale with a recall period of 24 hours. The BPI-SF interference score ranges 0-70. Higher scores indicated greater interference.
Number of Participants With Treatment-emergent Adverse Events (TEAEs) During the StudyFrom Baseline till end of Safety Follow-up (up to Week 33)An Adverse Event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. A TEAE was defined as any AE with an onset date on or after the first dose of investigational medicinal product (IMP) in Run-In and on or before the earliest of the following: the last date of infusion (including Run-Out) +56 days, final contact date, or death. A TEAE is also defined as any unresolved event already present before administration of treatment that worsens in intensity following exposure to the treatment.
Mean 7-day Average Daily Pain Score Assessed With Pain Numeric Rating Scale (NRS) at 12 Weeks of TreatmentAt 12 Weeks of treatmentThe Pain Numeric Rating Scale (NRS) was a scale in which a respondent selected a whole number that best described How much pain have you experienced on average over the past 24 hours? The 11-point Pain NRS ranged 0 (no pain) to 10 (pain as bad as you can imagine). Mean pain scores were derived the average of the daily assessment over the past 7 days. The higher score represented worst possible pain.
Mean 7-day Fatigue Score Assessed With Fatigue Numeric Rating Scale at 12 Weeks of TreatmentAt 12 weeks of treatmentThe Fatigue Numeric Rating Scale (NRS) was a scale in which a respondent selected a whole number that best described How much fatigue have you experienced on average over the past 24 hours? The 11-point Fatigue NRS ranged 0 (no fatigue) to 10 (fatigue as bad as you can imagine). Mean fatigue scores were derived the average of the daily assessment over the past 7 days. Higher score represented worst possible fatigue.
Revised Fibromyalgia Impact Questionnaire (FIQR) Score at 12 Weeks of TreatmentAt 12 weeks of treatmentThe Revised Fibromyalgia Impact Questionnaire (FIQR) was a 21-item questionnaire with a recall period of 7 days. The FIQR included 3 domains: activities, overall impact, and symptoms. Each item was based on an 11-point numeric rating scale. The FIQR total score was calculated by taking the sum of the following: Activities domain subtotal divided by 3, overall impact domain subtotal and symptoms domain subtotal divided by 2. The total score ranged from 0 to 100, with 0 denoting the best possible condition and 100 denoting the worst possible condition. Higher scores indicated more severe impact.

Countries

United Kingdom

Participant flow

Recruitment details

The study started to enroll participants in December 2022 and concluded in July 2024.

Pre-assignment details

The Participant Flow refers to the Randomized Set.

Participants by arm

ArmCount
Sequence 1: RLZ 12w + RLZ 12w
Participants received placebo, subcutaneously (SC), once weekly (QW) for 2 weeks (Run-in Period), then rozanolixizumab (RLZ) 560 milligrams (mg), SC, QW, weekly (w) for 24 weeks (Treatment Period 1 + Treatment Period 2), followed by placebo SC, QW for 2 weeks (Runout Period). The safety follow-up (SFU) included all the participants who received the investigational medicinal product (IMP), regardless of discontinuation.
22
Sequence 2: PBO + RLZ 12w
Participants received placebo SC, QW for 2 weeks (Run-in Period), then placebo SC, QW for 12 weeks (Treatment Period 1), followed by rozanolixizumab 560 mg, SC, QW for 12 weeks (Treatment Period 2), followed by placebo SC, QW for 2 weeks (Runout Period). The SFU included all the participants who received the IMP, regardless of discontinuation.
20
Sequence 3: PBO + PBO
Participants received placebo SC, QW for 2 weeks (Run-in Period), then placebo SC, QW for 24 weeks (Treatment Period 1 + Treatment Period 2), followed by placebo SC, QW for 2 weeks (Run-out Period). The SFU included all the participants who received the IMP, regardless of discontinuation.
21
Total63

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Treatment Period 1 (12 Weeks)Adverse Event201
Treatment Period 1 (12 Weeks)Consent Withdrawn by Study Participant (Not Due to Adverse Event)010
Treatment Period 1 (12 Weeks)Lost to Follow-up100
Treatment Period 2 (12 Weeks)Consent Withdrawn by Study Participant (Not Due to Adverse Event)100
Treatment Period 2 (12 Weeks)Lack of Efficacy010
Treatment Period 2 (12 Weeks)New Work Commitments100

Baseline characteristics

CharacteristicSequence 1: RLZ 12w + RLZ 12wSequence 2: PBO + RLZ 12wSequence 3: PBO + PBOTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants0 Participants1 Participants2 Participants
Age, Categorical
Between 18 and 65 years
21 Participants20 Participants20 Participants61 Participants
Age, Continuous46.3 years
STANDARD_DEVIATION 9.9
47.8 years
STANDARD_DEVIATION 10.7
47.3 years
STANDARD_DEVIATION 9.5
47.1 years
STANDARD_DEVIATION 9.9
Race/Ethnicity, Customized
Asian
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Black or African American
0 Participants1 Participants1 Participants2 Participants
Race/Ethnicity, Customized
Hispanic or Latino
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
22 Participants20 Participants20 Participants62 Participants
Race/Ethnicity, Customized
White
22 Participants19 Participants19 Participants60 Participants
Sex: Female, Male
Female
21 Participants17 Participants17 Participants55 Participants
Sex: Female, Male
Male
1 Participants3 Participants4 Participants8 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
deaths
Total, all-cause mortality
0 / 630 / 220 / 410 / 180 / 190 / 200 / 220 / 200 / 21
other
Total, other adverse events
24 / 6321 / 2237 / 4118 / 1819 / 1916 / 203 / 228 / 203 / 21
serious
Total, serious adverse events
0 / 630 / 223 / 410 / 180 / 190 / 200 / 221 / 202 / 21

Outcome results

Primary

Brief Pain Inventory Short Form (BPI-SF) Average Interference Score at 12 Weeks of Treatment

The BPI-SF was a self-administered questionnaire used to evaluate the severity of a study participant's pain and the impact of this pain on the study participant's daily functioning. The BPI-SF assesses for the location of pain, pain intensity and functional interference from pain. The 7 BPI-SF interference items included: general activity, mood, walking ability, normal work (including housework), relations with other people, sleep, and enjoyment of life. Each item was rated on a 0 (did not interfere) to 10 (completely interfere) scale with a recall period of 24 hours. The BPI-SF interference score ranges 0-70. Higher scores indicated greater interference.

Time frame: At 12 weeks of treatment

Population: Full Analysis Set (FAS) included all study participants who received any study treatment, including during the run-in period, had a baseline value and at least one post-baseline efficacy endpoint assessment.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Placebo (PBO)Brief Pain Inventory Short Form (BPI-SF) Average Interference Score at 12 Weeks of Treatment6.30 score on a scale
RLZ 12 WeeksBrief Pain Inventory Short Form (BPI-SF) Average Interference Score at 12 Weeks of Treatment5.76 score on a scale
p-value: 0.12995% CI: [-1.24, 0.16]Longitudinal linear mixed effect model
Secondary

Brief Pain Inventory Short Form (BPI-SF) Average Interference Score at 24 Weeks of Treatment

The BPI-SF was a self-administered questionnaire used to evaluate the severity of a study participant's pain and the impact of this pain on the study participant's daily functioning. The BPI-SF assesses for the location of pain, pain intensity and functional interference from pain. The 7 BPI-SF interference items included: general activity, mood, walking ability, normal work (including housework), relations with other people, sleep, and enjoyment of life. Each item was rated on a 0 (did not interfere) to 10 (completely interfere) scale with a recall period of 24 hours. The BPI-SF interference score ranges 0-70. Higher scores indicated greater interference.

Time frame: At 24 weeks of treatment

Population: FAS included all study participants who received any study treatment, including during the run-in period, had a baseline value and at least one post-baseline efficacy endpoint assessment. Here 'overall number of participants analyzed' signifies participants evaluable for this Outcome measure.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Placebo (PBO)Brief Pain Inventory Short Form (BPI-SF) Average Interference Score at 24 Weeks of Treatment6.30 score on a scale
RLZ 12 WeeksBrief Pain Inventory Short Form (BPI-SF) Average Interference Score at 24 Weeks of Treatment5.79 score on a scale
p-value: 0.35895% CI: [-1.6, 0.58]Longitudinal mixed effects model
Secondary

Mean 7-day Average Daily Pain Score Assessed With Pain Numeric Rating Scale (NRS) at 12 Weeks of Treatment

The Pain Numeric Rating Scale (NRS) was a scale in which a respondent selected a whole number that best described How much pain have you experienced on average over the past 24 hours? The 11-point Pain NRS ranged 0 (no pain) to 10 (pain as bad as you can imagine). Mean pain scores were derived the average of the daily assessment over the past 7 days. The higher score represented worst possible pain.

Time frame: At 12 Weeks of treatment

Population: FAS included all study participants who received any study treatment, including during the run-in period, had a baseline value and at least one post-baseline efficacy endpoint assessment.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Placebo (PBO)Mean 7-day Average Daily Pain Score Assessed With Pain Numeric Rating Scale (NRS) at 12 Weeks of Treatment6.59 score on a scale
RLZ 12 WeeksMean 7-day Average Daily Pain Score Assessed With Pain Numeric Rating Scale (NRS) at 12 Weeks of Treatment6.63 score on a scale
p-value: 0.87895% CI: [-0.55, 0.64]Longitudinal mixed effects model
Secondary

Mean 7-day Fatigue Score Assessed With Fatigue Numeric Rating Scale at 12 Weeks of Treatment

The Fatigue Numeric Rating Scale (NRS) was a scale in which a respondent selected a whole number that best described How much fatigue have you experienced on average over the past 24 hours? The 11-point Fatigue NRS ranged 0 (no fatigue) to 10 (fatigue as bad as you can imagine). Mean fatigue scores were derived the average of the daily assessment over the past 7 days. Higher score represented worst possible fatigue.

Time frame: At 12 weeks of treatment

Population: FAS included all study participants who received any study treatment, including during the run-in period, had a baseline value and at least one post-baseline efficacy endpoint assessment.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Placebo (PBO)Mean 7-day Fatigue Score Assessed With Fatigue Numeric Rating Scale at 12 Weeks of Treatment7.26 score on a scale
RLZ 12 WeeksMean 7-day Fatigue Score Assessed With Fatigue Numeric Rating Scale at 12 Weeks of Treatment6.98 score on a scale
p-value: 0.35295% CI: [-0.86, 0.31]Longitudinal mixed effects model
Secondary

Number of Participants With TEAEs Leading to Withdrawal of IMP

An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. A TEAE was defined as any AE with an onset date on or after the first dose of IMP in Run-In and on or before the earliest of the following: the last date of infusion (including Run-Out) +56 days, final contact date, or death.

Time frame: From Baseline till end of Safety Follow-up (up to Week 33)

Population: The SS-t included all study participants who received any study treatment, including during Run-In period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Placebo (PBO)Number of Participants With TEAEs Leading to Withdrawal of IMP0 Participants
RLZ 12 WeeksNumber of Participants With TEAEs Leading to Withdrawal of IMP3 Participants
TP1-PBONumber of Participants With TEAEs Leading to Withdrawal of IMP1 Participants
TP2-RLZ/RLZNumber of Participants With TEAEs Leading to Withdrawal of IMP0 Participants
TP2-PBO/RLZNumber of Participants With TEAEs Leading to Withdrawal of IMP0 Participants
TP2-PBO/PBONumber of Participants With TEAEs Leading to Withdrawal of IMP1 Participants
Run-Out and SFU-RLZ/RLZNumber of Participants With TEAEs Leading to Withdrawal of IMP0 Participants
Run-Out and SFU-PBO/RLZNumber of Participants With TEAEs Leading to Withdrawal of IMP0 Participants
Run-Out and SFU-PBO/PBONumber of Participants With TEAEs Leading to Withdrawal of IMP2 Participants
Secondary

Number of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study

An Adverse Event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. A TEAE was defined as any AE with an onset date on or after the first dose of investigational medicinal product (IMP) in Run-In and on or before the earliest of the following: the last date of infusion (including Run-Out) +56 days, final contact date, or death. A TEAE is also defined as any unresolved event already present before administration of treatment that worsens in intensity following exposure to the treatment.

Time frame: From Baseline till end of Safety Follow-up (up to Week 33)

Population: The Safety Set as treated (SS-t) included all study participants who received any study treatment, including during Run-In period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Placebo (PBO)Number of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study44 Participants
RLZ 12 WeeksNumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study22 Participants
TP1-PBONumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study41 Participants
TP2-RLZ/RLZNumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study18 Participants
TP2-PBO/RLZNumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study19 Participants
TP2-PBO/PBONumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study19 Participants
Run-Out and SFU-RLZ/RLZNumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study10 Participants
Run-Out and SFU-PBO/RLZNumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study12 Participants
Run-Out and SFU-PBO/PBONumber of Participants With Treatment-emergent Adverse Events (TEAEs) During the Study11 Participants
Secondary

Revised Fibromyalgia Impact Questionnaire (FIQR) Score at 12 Weeks of Treatment

The Revised Fibromyalgia Impact Questionnaire (FIQR) was a 21-item questionnaire with a recall period of 7 days. The FIQR included 3 domains: activities, overall impact, and symptoms. Each item was based on an 11-point numeric rating scale. The FIQR total score was calculated by taking the sum of the following: Activities domain subtotal divided by 3, overall impact domain subtotal and symptoms domain subtotal divided by 2. The total score ranged from 0 to 100, with 0 denoting the best possible condition and 100 denoting the worst possible condition. Higher scores indicated more severe impact.

Time frame: At 12 weeks of treatment

Population: FAS included all study participants who received any study treatment, including during the run-in period, had a baseline value and at least one post-baseline efficacy endpoint assessment.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Placebo (PBO)Revised Fibromyalgia Impact Questionnaire (FIQR) Score at 12 Weeks of Treatment70.70 score on a scale
RLZ 12 WeeksRevised Fibromyalgia Impact Questionnaire (FIQR) Score at 12 Weeks of Treatment62.30 score on a scale
p-value: 0.00395% CI: [-13.84, -2.96]Longitudinal mixed effects model

Source: ClinicalTrials.gov · Data processed: Sep 18, 2026