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Daptomycin

Phase 3

Acute Hematogenous Osteomyelitis | Small molecule | Other |Merck & Company, Inc.|Last Updated: May 13, 2022

Success Probability

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment149

FDA Designations

No designations recorded

Clinical trial landscape

Daptomycin · 13 trials · 15 indications

Phase 3 4Phase 2 3Phase 1 5Early Phase 1 1
NCT01922011Safety and Efficacy Study of Daptomycin Compared to Active Comparator in Pediatric Participants With Acute Hematogenous Osteomyelitis (AHO) (MK-3009-006)Acute Hematogenous Osteomyelitis
COMPLETED149 Analytics
NCT00093067Daptomycin in the Treatment of Subjects With Infective Endocarditis or Bacteremia Due to S. AureusBacterial Endocarditis
COMPLETED- Analytics
NCT00540072Study of Cidecin™ (Daptomycin) to Rocephin® (Ceftriaxone) in the Treatment of Moderate to Severe Community-Acquired Acute Bacterial Pneumonia Due to S. PneumoniaePneumonia, Bacterial
COMPLETED- Analytics
NCT00538694Comparative Study of Cidecin™ (Daptomycin) to Rocephin® (Ceftriaxone) in the Treatment of Moderate to Severe Community-Acquired Acute Bacterial PneumoniaPneumonia, Bacterial
COMPLETED- Analytics
PHASE3COMPLETED
Safety and Efficacy Study of Daptomycin Compared to Active Comparator in Pediatric Participants With Acute Hematogenous Osteomyelitis (AHO) (MK-3009-006)
Acute Hematogenous OsteomyelitisUnlock trial analytics
PHASE3COMPLETED
Daptomycin in the Treatment of Subjects With Infective Endocarditis or Bacteremia Due to S. Aureus
Bacterial EndocarditisUnlock trial analytics
PHASE3COMPLETED
Study of Cidecin™ (Daptomycin) to Rocephin® (Ceftriaxone) in the Treatment of Moderate to Severe Community-Acquired Acute Bacterial Pneumonia Due to S. Pneumoniae
Pneumonia, BacterialUnlock trial analytics
PHASE3COMPLETED
Comparative Study of Cidecin™ (Daptomycin) to Rocephin® (Ceftriaxone) in the Treatment of Moderate to Severe Community-Acquired Acute Bacterial Pneumonia
Pneumonia, BacterialUnlock trial analytics

Study Endpoints

Primary Endpoints

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.
Up to study Day 5

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.

To demonstrate that daptomycin is not inferior to comparator in the treatment of S. aureus bacteremia and IE as assessed by the Independent External Adjudication Committee (IEAC) Outcome at Test of Cure (TOC) in the Intention-to-Treat (ITT) population.
Percentage of Participants With an Adverse Event
Up to 56 days

An adverse event (AE) is any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an adverse event.

Percentage of Participants That Discontinued Study Treatment Due to an Adverse Event (AE)
Up to 42 days

An AE is any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an adverse event.

Any Creatine Phosphokinase (CPK) Elevation > 500 Units Per Liter (U/L)
From the 3rd day of therapy to 1 week post last dose (approximately week 7)

Number of subjects with CPK \>500 U/L between Day 3 and 7 days following the last dose of study medication (Day 7P) as measured by the central laboratory.

Clinical Response Rate at TOC
PK of single dose daptomycin in subjects between 3 and 24 months who are receiving standard antibiotic therapy for a Gram-positive infection, including subjects that are receiving prophylactic antibiotics peri-operatively.
Two years
Evaluation of Area Under the Curve From Time 0 to Infinity
Within 30 minutes prior to the start of the infusion, mid-infusion, and end of the infusion; at 1, 2, 4, 6, 9, 24, and 48 hours after the end of the infusion; and just prior to the next hemodialysis session (i.e., 68 hours post-infusion)

Area under the plasma concentration versus time curve from time 0 to infinity for daptomycin doses

Pharmocokinetics of daptomycin
From pre-dose to 24 hours post-dose
Pharmacokinetics
Study Day 1, 3, 5 and 7 or 8
Pharmacokinetic
Daptomycin total, renal, and non-renal clearance
14 days

Total, renal, and non-renal clearance of daptomycin before and after administration of rifampin

Daptomycin Volume of Distribution
14 days

The volume of distribution of daptomycin before and after administration of rifampin

Daptomycin Elimination Rate Constant
14 days

The elimination rate constant of daptomycin before and after administration of rifampin

Daptomycin Free and Total Peak Concentrations
14 days

The free and total peak concentrations of daptomycin before and after administration of rifampin

Daptomycin Free and Total 24 hour Concentrations
14 days

The free and total 24 hour concentrations of daptomycin before and after administration of rifampin

Daptomycin Free and Total Area Under the Concentration-Time Curve (AUC) from 0 to 24 hours
14 days

The free and total AUC from 0 to 24 hours of daptomycin before and after administration of rifampin

Daptomycin Free and Total AUC from 0 to Infinity
14 days

The free and total AUC from 0 to infinity of daptomycin before and after administration of rifampin

Percent Protein Binding of Daptomycin
14 days

The percent protein binding of daptomycin before and after administration of rifampin

Secondary Endpoints

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.
Up to study Day 5
Percentage of Participants With a Favorable Clinical Outcome
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)
Percentage of Participants With a Clinical Cure Categorized by Baseline Pathogen at Test of Cure
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)
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
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.
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)
Daptomycin 6 mg/kgEXPERIMENTALDaptomycin (6 mg/kg every 24 hours \[q24h\]) as a 30 minute intravenous (IV) infusion for 6 weeks (± one week).
Daptomycin 8 mg/kgEXPERIMENTALDaptomycin (8 mg/kg q24h) as a 30 minute IV infusion for 6 weeks (± one week).
ComparatorACTIVE_COMPARATORVancomycin was administered at 1 gram every 12 hours (q12h) as a 60-minute infusion and teicoplanin was administered 6 mg/kg q24h as a 30-minute infusion also for 6 weeks (±1 week). Semi-synthetic penicillin (nafcillin, oxacillin, or flucloxacillin) was administered according to standard of care for 6 weeks (±1 week).
Group 1EXPERIMENTALGroup 1: Ages 13 months to 24 months inclusive. Six subjects dosed at 6 mg/kg as a 30 minute infusion.
Group 2EXPERIMENTALGroup 2: Ages 7 months to 12 months inclusive: Six subjects will receive a dose of 4 mg/kg as a 30 minute infusion
Group 3EXPERIMENTALGroup 3: Ages 3 months to 6 months inclusive: Six subjects will receive a dose of 4 mg/kg as a 30 minute infusion.
AEXPERIMENTAL9 mg/kg of daptomycin administered during the last 30 minutes of a hemodialysis session.
BEXPERIMENTALPost dialysis dosing
Hemodialysis (HD) ParticipantsEXPERIMENTALParticipants will receive daptomycin 6 mg/kg by intravenous infusion (i.v.) at 48-hours intervals (with dialysis) for a total of 3 doses.
Continuous Ambulatory Peritoneal Dialysis (CAPD) ParticipantsEXPERIMENTALParticipants will receive daptomycin 6 mg/kg, i.v., at 48-hours intervals for a total of 3 doses.
Daptomycin and RifampinEXPERIMENTALDrug: Daptomycin Daptomycin 6 mg/kg will be given by IV infusion on the first study day Drug: Rifampin Rifampin 600 mg capsules will be given orally once daily for 14 days starting on study day 2 Drug: Daptomycin Daptomycin 6 mg/kg will be given by IV infusion on study day 15

Interventions

NameTypeDescription
DaptomycinDRUGIV 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)DRUGIV vancomycin (or equivalent) (Infusions A,B,C,D), 10 to 15 mg/kg, infused over 60 (± 10) minutes q6h (± 1 hour)
Nafcillin (or equivalent)DRUGIV 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)
Daptomycin for InjectionDRUGOnce daily administration of 5, 7, 9, 10, or 12 mg/kg intravenous (IV) daptomycin infused with 25-50 mL saline over 30-60 minutes depending upon infection type and age level.
vancomycinDRUG1 gram
teicoplaninDRUG6 mg/kg; used only at UK sites
nafcillinDRUG1-2 gram
oxacillinDRUG1-2 gram
flucloxacillinDRUG1-2 mg
RifampinDRUG -
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Eligibility Criteria

Age Range1 Year to 17 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: * 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-...

Countries:JapanUnited StatesRussiaUnited Kingdom
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Frequently asked questions about Daptomycin

What is Daptomycin used for?

Daptomycin is a small molecule antibiotic studied for Gram-positive bacterial infections, including acute hematogenous osteomyelitis, bacterial endocarditis, bacterial pneumonia, and osteomyelitis. It is also being evaluated in pediatric patients with complicated skin and soft tissue infections and bacteremia. The drug is developed by Merck & Company, Inc. (MRK).

How does Daptomycin work?

Daptomycin is a lipopeptide antibiotic that targets Gram-positive bacteria. It works by binding to the bacterial cell membrane and causing rapid depolarization, leading to disruption of membrane function and cell death. This mechanism makes it effective against a range of Gram-positive pathogens, including those resistant to other antibiotic classes.

Who makes Daptomycin?

Daptomycin is developed by Merck & Company, Inc., which trades under the ticker MRK. The company is conducting clinical trials to evaluate the drug's safety and efficacy in various Gram-positive infections, including pneumonia and skin infections.

What phase is Daptomycin in?

Daptomycin is in Phase 3 clinical development for bacterial pneumonia, as evidenced by a completed Phase 3 trial (NCT00540072). It has also completed Phase 1 and Phase 2 trials in pediatric populations. Daptomycin is investigational and not yet approved for these indications.

What clinical trials is Daptomycin in?

Daptomycin has been studied in several completed trials, including NCT00540072 (Phase 3 for bacterial pneumonia), NCT00679835 (Phase 1 in children with Gram-positive infections), NCT01019395 (Phase 1 in children ages 3-24 months), and NCT03643952 (Phase 2 in Japanese pediatric subjects with cSSTI and bacteremia).

Is Daptomycin the same as Cidecin?

Yes, Daptomycin is also known as Cidecin. A Phase 3 trial (NCT00540072) compared Cidecin (daptomycin) to Rocephin (ceftriaxone) in patients with moderate to severe community-acquired bacterial pneumonia caused by S. pneumoniae.