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Acute Hematogenous OsteomyelitisPhase 3NCT01922011

Safety and Efficacy Study of Daptomycin Compared to Active Comparator in Pediatric Participants With Acute Hematogenous Osteomyelitis (AHO) (MK-3009-006)

A Phase 3 study testing Daptomycin, Vancomycin (or equivalent) and Nafcillin (or equivalent) in people with Acute Hematogenous Osteomyelitis, run by Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA).

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of the study is to determine whether daptomycin is effective and safe in the treatment of pediatric participants with AHO when compared to vancomycin (or equivalent) or nafcillin (or β-lactam equivalent). Read more about this study

Who is it for?
Ages 1 year to 17 years
Conditions the study is for
Acute Hematogenous Osteomyelitis
What is being tested?
Daptomycin, Vancomycin (or equivalent) and Nafcillin (or equivalent)
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
149 participants
Where
No sites listed yet
Study dates
13 Sep 2013to 20 Dec 2016
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 1 year to 17 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Obtain Informed Consent;
  • Be 1 year to < 18 years old; a stepwise approach will be implemented to gate enrollment as follows: enrollment will begin with children aged 2-17 years; after an external Drug Safety Monitoring Board (DSMB) review, enrollment will be broadened to 1-17 years.
  • Have diagnosis of suspected or confirmed AHO warranting IV antibacterial therapy as inpatient, based on clinical, imaging and/or microbiological evidence as outlined below:
  • Clinical evidence of fever accompanied by symptoms on the affected limb that include but it is not limited to pain, tenderness on palpation, inflammation, warmth, swelling, difficulty bearing weight, motion restriction, loss of function
  • Radiologic imaging (magnetic resonance imaging [MRI], bone scan, x-ray, or computed tomography [CT] scan) consistent with osteomyelitis OR Microbiological evidence (gram stain, culture or polymerase chain reaction (PCR)) from a bone biopsy or bone aspirate (if available), or blood
  • Laboratory evidence: C-reactive protein (CRP) elevated, Erythrocyte sedimentation rate (ESR) elevated, leukocytosis or leukopenia, immature neutrophils
Show all 30Show fewer
  • •Confirmed (I, II, and III) OR suspected (I and III) that must be confirmed post-randomization
  • Participants will not be allowed into the study if they:
  • Have documented history of any hypersensitivity or allergic reaction to daptomycin
  • Have septic arthritis only (without AHO)
  • Have acute hematogenous osteomyelitis that is located in the spine
  • Have chronic osteomyelitis (i.e. symptoms of osteomyelitis > 21 days) or osteomyelitis with complications requiring non-routine surgical treatment (i.e. sequestration).
  • Have major trauma, penetrating trauma (including a puncture wound of the foot), postoperative osteomyelitis, foreign body in or adjacent to affected bone or joint, or other iatrogenic bone or joint infections present at the site of infection
  • Have acute hematogenous osteomyelitis due to a proven gram-negative organism
  • Have transient tenosynovitis, juvenile rheumatoid arthritis (JRA), reactive arthritis, bony tumors, and other osteoarticular diseases suspected to be due to a nonbacterial (eg, fungal or mycobacterial) etiology
  • Receive more than 24 hours of effective intravenous antibacterial therapy for osteomyelitis within 96 hours before randomization unless microbiological or clinical failure is documented
  • Require any potentially effective concomitant systemic antibacterial therapy for gram-positive infections
  • Have history of seizures (except febrile seizure of childhood)
  • Have peripheral neuropathy
  • Have history of rhabdomyolysis (with the exception of muscle injury due to trauma)
  • Have Sickle cell anemia
  • Cannot be assessed clinically during the study
  • Have any condition (eg, cystic fibrosis, current septic shock) that would make the subject, in the opinion of the Investigator, unsuitable for the study
  • Have significant reduced creatinine clearance (CrCl) < 50 mL/min/1.73 m2
  • Have evidence of significant hepatic, hematologic, or immunologic dysfunction
  • Have Creatine kinase (CK) elevation ≥ 10 × ULN (upper limit of normal) without symptoms or ≥ 5 × ULN with symptoms
  • If female, must not be pregnant or nursing and if required by age and life style take appropriate measures to not get pregnant during the study.
  • Have participated in any study involving administration of an investigational agent or device or daptomycin within 30 days
  • Are unable or unwilling to adhere to the study-specified procedures and restrictions
  • Has suspected or confirmed pneumonia, empyema, meningitis, or endocarditis.

Who cannot join

None listed.

About this study

Official title: A Multicenter, Randomized, Double-Blinded Comparative Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of Daptomycin Versus Active Comparator in Pediatric Subjects With Acute Hematogenous Osteomyelitis Due to Gram-Positive Organisms

The purpose of the study is to determine whether daptomycin is effective and safe in the treatment of pediatric participants with AHO when compared to vancomycin (or equivalent) or nafcillin (or β-lactam equivalent). The primary hypothesis is that daptomycin is non-inferior compared with vancomycin (or equivalent) or nafcillin (or β-lactam equivalent) with respect to improvement in Pain, Inflammation, and Limb Function on or before study Day 5.

Read the detailed description

Acute hematogenous osteomyelitis is a common problem in the pediatric population, affecting approximately 5/10,000 children each year and accounting for approximately 1% of all pediatric hospitalizations. In children, osteomyelitis arises from bacteremic seeding of the bone metaphysis.

Daptomycin, is a cyclic lipopeptide antibacterial active against most clinically significant gram-positive pathogens including drug-resistant strains such as Methicillin Resistant Staphylococcus (S.) aureus (MRSA) and Methicillin Susceptible S. aureus (MSSA). Daptomycin has proven clinical efficacy in adults in the treatment of complicated skin and skin structure infections (cSSSI) caused by aerobic gram-positive pathogens and the treatment of S. aureus bloodstream infections (bacteremia; SAB), including those complicated by right-sided infective endocarditis, caused by MSSA and MRSA. Although not indicated for osteomyelitis, daptomycin has been successfully used to treat osteoarticular infections in adults and children as salvage therapy and at medical centers with increasingly high rates of vancomycin resistant organisms.

In addition, more comparative clinical trials are needed in pediatric AHO to better elucidate the optimal treatment regimen and clinical response.

Being tested
Daptomycin, Vancomycin (or equivalent), Nafcillin (or equivalent)

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DaptomycinDrug

    IV daptomycin Infusion A in 12 to <18 years old (7 mg/kg); in 7 to < 12 year olds (9 mg/kg); in 24 months to <7 year olds (12 mg/kg); in 12 to <24 month olds (12 mg/kg). Infused over 60 minutes ± 10 minutes once daily followed by up to 3 dummy infusions every 6 hours (q6h) infused over 60 (± 10) min to maintain the blind.

  • Vancomycin (or equivalent)Drug

    IV vancomycin (or equivalent) (Infusions A,B,C,D), 10 to 15 mg/kg, infused over 60 (± 10) minutes q6h (± 1 hour)

  • Nafcillin (or equivalent)Drug

    IV nafcillin (or β-lactam equivalent) (Infusions A,B,C,D) at 100-200 mg/kg/day, in divided doses infused over 60 (± 10) min q6h (± 1 hour)

Study groups in NCT01922011
Study groupRoleWhat they receive
DaptomycinExperimentalIntravenous (IV) daptomycin was dosed as follows: age 12 years to <18 years (7 mg/kg); age 7 years to < 12 years (9 mg/kg); age 24 months to <7 years (12 mg/kg); age 12 months to <24 months (12 mg/kg). Drug was infused over 60 minutes ± 10 minutes once daily followed by up to 3 dummy infusions every 6 hours (q6h) infused over 60 (± 10) min to maintain the blind.
Receives: Drug: Daptomycin
Vancomycin or NafcillinActive comparatorIV vancomycin (or equivalent), 10 to 15 mg/kg, was infused over 60 (± 10) minutes q6h (± 1 hour) or IV nafcillin (or β-lactam equivalent) at 100-200 mg/kg/day, in divided doses was infused over 60 (± 10) min q6h (± 1 hour)
Receives: Drug: Vancomycin (or equivalent); Drug: Nafcillin (or equivalent)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants With Clinical Improvement in the 3 General Categories of Pain, Inflammation, and Limb Function Based on the Investigator's Overall Assessment of Severity of Each of the Symptom Categories.

    Clinical improvement was based on the Investigator's overall assessment of severity of each of the 3 general symptom categories of Pain, Inflammation, and Limb Function. Based on this evaluation, a participant was considered to have met criteria for clinical improvement according to the following definition: If 3 general categories are present at baseline: at least a 1-point improvement (i.e. severe to moderate, moderate to mild, mild to absent) in at least 2 of the general categories and no worsening in the other. If 2 general categories are present at baseline: at least a 2-point improvement (i.e. severe to mild, moderate to absent) in at least 1 of the general categories and no worsening or new findings in the others OR at least a 1-point improvement in both and no new findings in the other. If 1 general category is present at baseline: at least a 2-point improvement (i.e., severe to mild, moderate to absent) in that category and no new findings in the others.

    Measured: Up to study Day 5

Secondary outcomes (5)
  1. Percentage of Participants With Clinical Improvement Measured as a Composite End Point of Pain, Inflammation, Limb Function, Body Temperature, and C-reactive Protein at End-of IV (EOIV) Therapy Visit.

    A participant had a favorable outcome in this composite endpoint if all 3 of the following criteria were met: Clinical improvement in the general symptom categories of Pain, Inflammation, and Limb Function on or before Study Day 5; Body temperature ≤ 38°C (100.4°F) over the preceding 24 hours; and C-reactive Protein (CRP) decreased from baseline for participants who had a baseline CRP >ULN (upper limit of normal)) or remain <=ULN for participants who had a baseline <=ULN on or before Study Day 5. The EOIV visit is within 24 hours after the last dose of IV study drug and before switch to optional open label (PO) therapy, if applicable.

    Measured: Up to study Day 5

  2. Percentage of Participants With a Favorable Clinical Outcome

    Favorable clinical outcomes are clinical recovery and clinical cure. Clinical cure is defined as resolution of all acute symptoms of AHO or improvement to such an extent that no further intravenous antibacterial therapy is required. Clinical recovery is defined as clinical improvement in the composite end point three general categories of Pain, Inflammation, and Limb Function on or before Study Day 5, and no development of new symptoms of AHO; body temperature ≤ 38°C (100.4°F) for 24 hours; no new or additional bone or joint infection (e.g., abscess, spreading to other osseous or articular locations) such that no further antibacterial therapy or surgery are required; no hematogenous metastatic infection (e.g., abscess in liver, spleen, lung; other bones) or bacteremia.. The End of Therapy (EOT) visit is within 48 hours of last dose of PO therapy.

    Measured: Baseline (within 48 hours prior to first dose of IV study drug) - and up to Test of Cure (21-35 days after last dose of IV study drug) (up to Day 77)

  3. Percentage of Participants With a Clinical Cure Categorized by Baseline Pathogen at Test of Cure

    At Test Of Cure (TOC) clinical cure is defined as resolution of all acute symptoms of AHO or improvement to such an extent that no further antibacterial therapy is required. Favorable microbiological outcomes are either eradication where the source specimen demonstrated absence of the original baseline pathogen; or presumed eradication where the source specimen was not available to culture, and the subject was assessed as a clinical cure. To have a favorable microbiological response, the outcome for each participant's baseline pathogen must be favorable (eradicated or presumed eradicated). Other pathogens include Arcanobacterium haemolyticum, Gram positive cocci, Staphylococcus epidermidis, Streptococcus dysgalactiae, Streptococcus mitis group and Streptococcus pyogenes.

    Measured: Baseline (within 48 hours prior to first dose of IV study drug) - and Test of Cure (21-35 days after last dose of IV study drug) (up to Day 77)

  4. Percentage of Participants With Sustained Clinical Improvement

    Sustained clinical improvement was defined as participants with clinical improvement who further met the definition of clinical cure. Clinical improvement was in the three general categories of Pain, Inflammation, and Limb Function on or before Study Day 5. Clinical cure is defined as resolution of all acute symptoms of AHO or improvement to such an extent that no further intravenous antibacterial therapy is required. The EOT visit is within 48 hours of last dose of PO therapy.

    Measured: Baseline (within 48 hours prior to first dose of IV study drug) - up to Test of Cure (21-35 days after last dose of IV study drug) (up to Day 77)

  5. Percentage of Participants With a Favorable Microbiological Response Categorized by Baseline Pathogen at Test of Cure

    Favorable microbiological outcomes are either eradication where the source specimen demonstrated absence of the original baseline pathogen; or presumed eradication where the source specimen was not available to culture, and the subject was assessed as a clinical cure. For a favorable microbiological response, the outcome for each baseline pathogen must be eradicated or presumed eradicated. Other pathogens include Arcanobacterium haemolyticum, Gram positive cocci, Staphylococcus epidermidis, Streptococcus dysgalactiae, Streptococcus mitis group and Streptococcus pyogenes.

    Measured: Baseline (within 48 hours prior to first dose of IV study drug) - and Test of Cure (21-35 days after last dose of IV study drug) (up to Day 77)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Aug 2013 (estimated)
  2. Study start13 Sep 2013
  3. Primary completion14 Jun 2016
  4. Study completion20 Dec 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
149 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01922011
Sponsor's protocol ID
3009-006
Other IDs
DAP-PEDOST-11-03, 2013-000864-28
Status last verified
Jul 2018
First submitted
9 Aug 2013
Last updated
28 Aug 2018
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf

Publications

  • Bradley JS, Arrieta AC, Digtyar VA, Popejoy MW, Grandhi A, Bokesch P, Hershberger E, Dorr MB, Tan CM, Murata Y, Wolf DJ, Bensaci M. Daptomycin for Pediatric Gram-Positive Acute Hematogenous Osteomyelitis. Pediatr Infect Dis J. 2020 Sep;39(9):814-823. doi: 10.1097/INF.0000000000002790.

    PubMed 32639465

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Daptomycin, Vancomycin (or equivalent) and Nafcillin (or equivalent) in people with Acute Hematogenous Osteomyelitis, run by Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA).

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 30 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Aug 2018. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Jun 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants With Clinical Improvement in the 3 General Categories of Pain, Inflammation, and Limb Function Based on the Investigator's Overall Assessment of Severity of Each of the Symptom Categories. (time frame: Up to study Day 5). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01922011, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Aug 2018.

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