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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/ct2/show/NCT05394116




Registration number
NCT05394116
Ethics application status
Date submitted
4/05/2022
Date registered
27/05/2022
Date last updated
22/04/2024

Titles & IDs
Public title
A Study to Assess Safety, Tolerability and Efficacy of Garetosmab Versus Placebo Administered Intravenously (IV) in Adult Participants With Fibrodysplasia Ossificans Progressiva (FOP)
Scientific title
Phase 3 Randomized, Placebo-Controlled Study to Assess Safety, Tolerability, and Efficacy of Garetosmab in Patients With Fibrodysplasia Ossificans Progressiva
Secondary ID [1] 0 0
2022-000880-40
Secondary ID [2] 0 0
R2477-FOP-2175
Universal Trial Number (UTN)
Trial acronym
OPTIMA
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Fibrodysplasia Ossificans Progressiva 0 0
Condition category
Condition code
Musculoskeletal 0 0 0 0
Other muscular and skeletal disorders
Human Genetics and Inherited Disorders 0 0 0 0
Other human genetics and inherited disorders
Injuries and Accidents 0 0 0 0
Other injuries and accidents

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - Garetosmab
Treatment: Drugs - Placebo

Experimental: High dose Garetosmab - Garetosmab is administered by intravenous (IV) administration every 4 weeks (Q4W)

Experimental: Low dose Garetosmab - Garetosmab is administered by IV administration Q4W

Experimental: Placebo - Placebo to match garetosmab, is supplied as a liquid solution without the monoclonal antibody (or the protein) and is administered IV Q4W.


Treatment: Drugs: Garetosmab
Garetosmab is supplied as a liquid drug product and will be administered IV.

Treatment: Drugs: Placebo
Placebo to match garetosmab, is supplied as a liquid solution without the monoclonal antibody (or the protein) and is administered IV.
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Number of new HO lesions adjudicated as positive based on computed tomography (CT)
Timepoint [1] 0 0
At Week 56
Primary outcome [2] 0 0
Incidence and severity of treatment-emergent adverse events of special interest (AESIs)
Timepoint [2] 0 0
Baseline to Week 56
Secondary outcome [1] 0 0
Number of clinician-assessed flare-ups
Timepoint [1] 0 0
Through Week 28, Week 56 and Week 84
Secondary outcome [2] 0 0
Occurrence of clinician-assessed flare-ups
Timepoint [2] 0 0
Through Week 28, Week 56 and Week 84
Secondary outcome [3] 0 0
Number of patient-reported flare-ups
Timepoint [3] 0 0
Through Week 28 and Week 56
Secondary outcome [4] 0 0
Occurrence of patient-reported flare-ups
Timepoint [4] 0 0
Through Weeks 28 and Week 56
Secondary outcome [5] 0 0
Occurrence of new HO lesions adjudicated as positive based on CT
Timepoint [5] 0 0
At Week 28, Week 56 and Week 84
Secondary outcome [6] 0 0
Total volume of new HO lesions adjudicated as positive based on CT
Timepoint [6] 0 0
At Week 28, Week 56 and Week 84
Secondary outcome [7] 0 0
Number of new HO lesions adjudicated as positive based on CT
Timepoint [7] 0 0
At Week 28 and Week 84
Secondary outcome [8] 0 0
Change in joint function assessment by physician using cumulative analog joint involvement scale (CAJIS)
Timepoint [8] 0 0
Baseline to Week 28 and Week 56
Secondary outcome [9] 0 0
Change in pulmonary function as assessed by spirometry
Timepoint [9] 0 0
Baseline to Week 28 and Week 56
Secondary outcome [10] 0 0
Change in disease severity as assessed by the Patient Global Impression of Severity (PGIS)
Timepoint [10] 0 0
Baseline to Week 28 and Week 56
Secondary outcome [11] 0 0
Change in disease severity as assessed by the Patient's Global Impression of Change (PGIC)
Timepoint [11] 0 0
Baseline to Week 28 and Week 56
Secondary outcome [12] 0 0
Change in disease severity as assessed by the Clinician's Global Impression of Change (CGIC)
Timepoint [12] 0 0
Baseline to Week 28 and Week 56
Secondary outcome [13] 0 0
Concentration of total activin A in serum over time
Timepoint [13] 0 0
Through Week 56
Secondary outcome [14] 0 0
Concentration of garetosmab in serum over time
Timepoint [14] 0 0
Through Week 56
Secondary outcome [15] 0 0
Incidence of anti-drug antibodies (ADA) to garetosmab over time
Timepoint [15] 0 0
Through Week 56
Secondary outcome [16] 0 0
Titer of ADA to garetosmab over time
Timepoint [16] 0 0
Through Week 56

Eligibility
Key inclusion criteria
Key

1. Clinical diagnosis of Fibrodysplasia Ossificans Progressiva (FOP) [(based on findings
of congenital malformation of the great toes, episodic soft tissue swelling, and/or
progressive Heterotopic Ossification (HO)]

2. Confirmation of FOP diagnosis with documentation of Type I activin A receptor (ACVR1)
FOP causing mutation

3. FOP disease activity within 1 year of screening visit. FOP disease activity is defined
as pain, swelling, stiffness, or other signs and symptoms associated with FOP
flare-ups; or worsening of joint function, or radiographic progression of HO lesions
(increase in size or number of HO lesions) with/without being associated with flare-up
episodes

4. Willing and able to undergo CT imaging procedures and other procedures as defined in
the protocol

Key
Minimum age
18 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
1. Cumulative Analog Joint Involvement Scale (CAJIS) score at screening >19

2. Participant has significant concomitant illness or history of significant illness such
as but not limited to cardiac, renal, rheumatologic, neurologic, psychiatric,
endocrine, metabolic, or lymphatic disease, that in the opinion of the study
investigator might confound the results of the study or pose additional risk to the
patient by their participation in the study

3. Previous history or diagnosis of cancer

4. Severely impaired renal function defined as estimated glomerular filtration rate <30
milliliter per minute (mL/min) (/1.73 m^2 calculated by the Modification of Diet in
Renal Disease equation

5. Uncontrolled diabetes defined as hemoglobin A1C (HbA1c) >9% at screening

6. History of poorly controlled hypertension, as defined by:

1. Systolic blood pressure =180 mm Hg or diastolic blood pressure =110 mm Hg at the
screening visit

2. Systolic blood pressure of 160 mm Hg to 179 mm Hg or diastolic blood pressure of
100 mm Hg to 109 mm Hg at the screening visit, AND a history of end-organ damage
(including history of left-ventricular hypertrophy, heart failure, angina,
myocardial infarction, stroke, transient ischemic attack, peripheral arterial
disease, end-stage renal disease, and moderate-to-advanced retinopathy

7. Known history of cerebral vascular malformation

8. Cardiovascular conditions such as New York Heart Association class III or IV heart
failure, cardiomyopathy, intermittent claudication, myocardial infarction, or acute
coronary syndrome within 6 months prior to screening; symptomatic ventricular cardiac
arrhythmia

9. History of severe respiratory compromise requiring oxygen, respiratory support (eg,
bilevel positive airway pressure [biPAP] or continuous positive airway pressure
[CPAP]), or a history of aspiration pneumonia requiring hospitalization

10. Prior use in the past year and concomitant use of bisphosphonates

11. Concurrent participation in another interventional clinical study or a
non-interventional study with radiographic measures or invasive procedures (eg,
collection of blood or tissue samples)

12. Treatment with another investigational drug, denosumab, imatinib or isotretinoin in
the last 30 days or within 5 half-lives of the investigational drug, whichever is
longer

13. Pregnant or breastfeeding women

14. Women of childbearing potential (WOCBP) who are unwilling to practice highly effective
contraception, as defined in the protocol

15. Male patients with WOCBP partners who are not willing to use condoms with WOCBP
partners to prevent potential fetal exposure, as defined in the protocol

Note: Other protocol defined Inclusion/Exclusion Criteria apply

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Parallel
Other design features
Phase
Phase 3
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
21/11/2022
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
12/06/2026
Actual
Sample size
Target
66
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment hospital [1] 0 0
Royal North Shore Hospital - St Leonards
Recruitment postcode(s) [1] 0 0
2065 - St Leonards
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
California
Country [2] 0 0
United States of America
State/province [2] 0 0
Minnesota
Country [3] 0 0
United States of America
State/province [3] 0 0
Tennessee
Country [4] 0 0
Brazil
State/province [4] 0 0
Sao Paulo
Country [5] 0 0
Chile
State/province [5] 0 0
Bio Bio
Country [6] 0 0
China
State/province [6] 0 0
Shanghai
Country [7] 0 0
Colombia
State/province [7] 0 0
Cundinamarca
Country [8] 0 0
Finland
State/province [8] 0 0
Stenbäckinkatu 11
Country [9] 0 0
France
State/province [9] 0 0
Montpellier
Country [10] 0 0
France
State/province [10] 0 0
Paris
Country [11] 0 0
Hong Kong
State/province [11] 0 0
Hong Kong
Country [12] 0 0
Italy
State/province [12] 0 0
Genoa
Country [13] 0 0
Japan
State/province [13] 0 0
Aichi
Country [14] 0 0
Japan
State/province [14] 0 0
Oita
Country [15] 0 0
Japan
State/province [15] 0 0
Fukuoka
Country [16] 0 0
Korea, Republic of
State/province [16] 0 0
Seoul
Country [17] 0 0
Malaysia
State/province [17] 0 0
Kuala Lumpur
Country [18] 0 0
Netherlands
State/province [18] 0 0
North Holland
Country [19] 0 0
Poland
State/province [19] 0 0
Podkarpackie
Country [20] 0 0
South Africa
State/province [20] 0 0
Cape Town
Country [21] 0 0
Spain
State/province [21] 0 0
Madrid
Country [22] 0 0
United Kingdom
State/province [22] 0 0
Greater London

Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
Name
Regeneron Pharmaceuticals
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
This study is researching an experimental drug called garetosmab. The study is focused on
adult patients with fibrodysplasia ossificans progressiva (FOP). The aim of the study is to
see how safe and effective the study drug is in patients with FOP.

The study is looking at several other research questions, including:

- What side effects may happen from receiving the study drug

- How much study drug is in your blood at different times

- Whether the body makes antibodies against the study drug (which could make the drug less
effective or could lead to side effects)
Trial website
https://clinicaltrials.gov/ct2/show/NCT05394116
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Clinical Trial Management
Address 0 0
Regeneron Pharmaceuticals
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Clinical Trials Administrator
Address 0 0
Country 0 0
Phone 0 0
844-734-6643
Fax 0 0
Email 0 0
clinicaltrials@regeneron.com
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/ct2/show/NCT05394116