ClinicalTrials.gg
CompletedNCT01252732SOLO IIUpdated May 5, 2021Results posted

Oritavancin Versus IV Vancomycin for the Treatment of Patients With Acute Bacterial Skin and Skin Structure Infection

A Phase 3 interventional study of Single-Dose IV Oritavancin Diphosphate and IV Vancomycin in Wound Infection, Abscess and Systemic Inflammation, sponsored by Melinta Therapeutics, Inc.. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-05-05.

Sponsored by Melinta Therapeutics, Inc. (part of CorMedix Therapeutics) · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
1,019
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this Phase 3 trial is to evaluate the efficacy, safety, and tolerability of oritavancin in ABSSSIs, including those caused by MRSA and to evaluate the potential economic benefit of oritavancin administered as a single 1200 mg IV dose.

Read the detailed description

This is a Phase 3, multicenter, randomized, double-blind, parallel, comparative efficacy and safety study of single-dose IV oritavancin/IV placebo versus IV vancomycin for 7 to 10 days in adults with acute bacterial skin and skin structure infection (ABSSSI) suspected or proven to be caused by Gram-positive pathogens. Approximately 960 patients will be randomized at 100 centers globally.

In addition, this study will characterize the PK and PK/PD properties of a single 1200 mg IV dose of oritavancin and evaluate the potential health economic benefits offered by this dosing strategy.

02

Conditions studied

  • Wound Infection
  • Abscess
  • Systemic Inflammation
  • Cellulitis

Keywords

  • ABSSSI
  • Skin Infection
  • Abscess
03

In context

Wound Infection

270 studies on the registry are indexed under Wound Infection; 33 are open to participants now.

This study's enrollment of 1,019 is above the median of 141 across 228 interventional studies indexed under Wound Infection.

Browse Wound Infection studies →

Lead sponsor

Melinta Therapeutics, Inc. is the lead sponsor of 32 studies on the registry; none are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 6 (75%) have results posted.

First submitted before Melinta Therapeutics, Inc. became part of CorMedix Therapeutics.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Subjects may be included in the study if they meet all of the following inclusion criteria:

  1. Males or females ≥18 years old
  2. Diagnosis of ABSSSI suspected or confirmed to be caused by a Gram-positive pathogen requiring at least 5 days of IV therapy
  3. An ABSSSI includes one of the following infections Wound infections, Cellulitis/erysipelas, Major cutaneous abscess
  4. ABSSSI must present with at least 2 signs and symptoms
  5. Able to give and willing to comply with all required study procedures

Exclusion criteria

Exclusion Criteria:

Subjects will be excluded from the study if any of the following exclusion criteria apply prior to randomization:

  1. Prior systemic or topical antibacterial therapy with activity against suspected or proven Gram-positive pathogens within the preceding 14 days

    • The causative Gram-positive pathogen(s) isolated from the ABSSSI site is resistant in vitro to the antibacterial(s) that was administered with documented clinical progression, or
    • Documented failure to previous ABSSSI antibiotic therapy is available. Documentation of treatment failure must be recorded
    • Patient received a single dose of a short acting antibacterial therapy three or more days before randomization
  2. Infections associated with, or in close proximity to, a prosthetic device
  3. Severe sepsis or shock
  4. Known or suspected bacteremia at time of screening
  5. ABSSSI due to or associated with any of the following:

    • Infections suspected or documented to be caused by Gram-negative pathogens -- Wound infections (surgical or traumatic) and abscesses with only Gram-negative pathogens
    • Diabetic foot infections
    • Concomitant infection at another site not including a secondary ABSSSI lesion
    • Infected burns
    • A primary infection secondary to a pre-existing skin disease with associated inflammatory changes
    • Decubitus or chronic skin ulcer, or ischemic ulcer due to peripheral vascular disease
    • Any evolving necrotizing process gangrene or infection suspected or proven to be caused by Clostridium species
    • Infections known to be caused by a Gram-positive organism with a vancomycin MIC >2 μg/mL or clinically failing prior therapy with glycopeptides
    • Catheter site infections
  6. Allergy or intolerance to aztreonam or metronidazole in a patient with suspected or proven polymicrobial wound infection involving Gram-negative and/or anaerobic bacteria
  7. Currently receiving chronic systemic therapy
  8. AIDS with \< 200 cells/mm3
  9. Neutropenia
  10. Significant or life-threatening condition that would confound or interfere with the assessment of the ABSSSI
  11. Women who are pregnant or nursing
  12. History of immune-related reaction to glycopeptides
  13. Patients that require anticoagulant monitoring with an
  14. to vancomycin
  15. Patients unwilling to forego blood and/or blood product donation
  16. Treatment with medicinal product within 30 days before enrollment and for the duration of the study
  17. Investigational device present, or removed \<30 days before enrollment, or presence of device-related infection
  18. Patients unlikely to adhere to the protocol, comply with study drug administration, or complete the clinical study
  19. Severe hepatic disease
  20. Presence of hyperuricemia
  21. Unwilling to refrain from chronic use of any medication with antipyretic properties
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

CD4 count

The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
1,019 participants (actual)

Study arms

  • Experimental
    Single-Dose IV Oritavancin Diphosphate

    Drug: Single-Dose IV Oritavancin Diphosphate

  • Active comparator
    IV Vancomycin

    Drug: IV Vancomycin

Interventions

  • DrugSingle-Dose IV Oritavancin Diphosphate

    Intravenous oritavancin and IV placebo or IV vancomycin will be administered for a minimum of 7 days up to a maximum of 10 days.

  • Intravenous oritavancin and IV placebo or IV vancomycin will be administered for a minimum of 7 days up to a maximum of 10 days.

06

What researchers measure

Primary outcomes

  1. Early Clinical Response

    Clinical response at the ECE visit (48-72 hours following initiation of study drug administration). Early clinical response was defined as a composite outcome based on, cessation of spreading or reduction in the size of baseline lesion, absence of fever and no rescue antibiotic medication.

    Time frame: 48-72 hours after the initation of study therapy

Secondary outcomes

  1. Investigator Assessed Clinical Cure at Post Therapy Evaluation (Key Secondary Endpoint)

    Compared the clinical efficacy at the Post Therapy Evaluation of Oritavancin and Vancomycin based on the Investigator examination of the signs and symptoms of the primary ABSSSI; Investigator assessment of clinical cure is complete or nearly complete resolution of baseline signs and symptoms of the primary infection such that no further treatment with antibiotics is needed

    Time frame: 7 to 14 days after end of therapy

  2. >= 20% Reduction in Lesion Area

    Clinical response at the ECE visit (48-72 hours following initiation of study drug administration) based on changes in ABSSSI lesion size measurements from baseline.

    Time frame: 48-72 hours after the initation of study therapy

07

Results

Posted Apr 13, 2021

Participant flow

Participant flow — Overall Study
MilestoneSingle-Dose 1200 mg OritavancinVancomycin
Started509510
Modified intent to treat population503502
Completed455446
Not completed5464

Outcome measures

PrimaryEarly Clinical Response

Clinical response at the ECE visit (48-72 hours following initiation of study drug administration). Early clinical response was defined as a composite outcome based on, cessation of spreading or reduction in the size of baseline lesion, absence of fever and no rescue antibiotic medication.

Time frame:
48-72 hours after the initation of study therapy
Reported as:
Number · participants
Early Clinical Response
participantsSingle-Dose 1200 mg OritavancinVancomycin
Success403416
Failure10086
Statistical analysis
  • Single-Dose 1200 mg Oritavancin vs Vancomycin · Difference in proportions: -2.7 · 95% CI -7.5 to 2.0
SecondaryInvestigator Assessed Clinical Cure at Post Therapy Evaluation (Key Secondary Endpoint)

Compared the clinical efficacy at the Post Therapy Evaluation of Oritavancin and Vancomycin based on the Investigator examination of the signs and symptoms of the primary ABSSSI; Investigator assessment of clinical cure is complete or nearly complete resolution of baseline signs and symptoms of the primary infection such that no further treatment with antibiotics is needed

Time frame:
7 to 14 days after end of therapy
Reported as:
Number · participants
Investigator Assessed Clinical Cure at Post Therapy Evaluation (Key Secondary Endpoint)
participantsSingle-Dose 1200 mg OritavancinVancomycin
Clinical Cure416404
Clinical Failure8798
Statistical analysis
  • Single-Dose 1200 mg Oritavancin vs Vancomycin · Difference in proportions: 2.2 · 95% CI -2.6 to 7.0
Secondary>= 20% Reduction in Lesion Area

Clinical response at the ECE visit (48-72 hours following initiation of study drug administration) based on changes in ABSSSI lesion size measurements from baseline.

Time frame:
48-72 hours after the initation of study therapy
Reported as:
Number · participants
>= 20% Reduction in Lesion Area
participantsSingle-Dose 1200 mg OritavancinVancomycin
Success432428
Failure7174
Statistical analysis
  • Single-Dose 1200 mg Oritavancin vs Vancomycin · Difference in proportions: 0.6 · 95% CI -3.7 to 5.0

Adverse events

Collected over Begins from the time the patient provided informed consent through to the last follow up visit at 60 (+7) days.. Non-serious events are listed at a 2% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Single-Dose 1200 mg Oritavancin—22/503 (4.4%)272/503 (54.1%)
Vancomycin—23/502 (4.6%)265/502 (52.8%)
Most frequent serious events
Showing 10 of 42
Most frequent serious events
EventSingle-Dose 1200 mg OritavancinVancomycin
CellulitisInfections and infestations6/5034/502
OsteomyelitisInfections and infestations4/5030/502
DyspneaRespiratory, thoracic and mediastinal disorders1/5032/502
Acute Myocardial InfarctionCardiac disorders0/5032/502
Skin InfectionInfections and infestations0/5032/502
Cardiac Failure CongestiveCardiac disorders1/5031/502
ConvulsionNervous system disorders1/5031/502
Abscess BacterialInfections and infestations0/5031/502
Arthritis BacterialInfections and infestations0/5031/502
Extradural AbscessInfections and infestations0/5031/502
Most frequent other events
Showing 10 of 15
Most frequent other events
EventSingle-Dose 1200 mg OritavancinVancomycin
nauseaGastrointestinal disorders45/50360/502
headacheNervous system disorders35/50328/502
pruritusSkin and subcutaneous tissue disorders13/50329/502
vomitingGastrointestinal disorders22/50328/502
constipationGastrointestinal disorders14/50317/502
cellulitisInfections and infestations17/50315/502
alanine aminotransferase increasedInvestigations16/50310/502
infusion site phlebitisGeneral disorders16/5035/502
diarrheaGastrointestinal disorders13/50315/502
pyrexiaGeneral disorders15/50311/502

Baseline characteristics

Modified Intent to Treat (mITT) population

Age, Continuous
Age, Continuous(years)Single-Dose 1200 mg OritavancinVancomycinTotal
Mean45.0 ± 13.4044.4 ± 14.2944.7 ± 13.85
Sex: Female, Male
Sex: Female, Male(Participants)Single-Dose 1200 mg OritavancinVancomycinTotal
Female165159324
Male338343681
08

Study locations

1 site
  • Sharp Grossmont Hospital
    La Mesa, California 91942, United States
09

References and documents

Publications

  • Corey GR, Loutit J, Moeck G, Wikler M, Dudley MN, O'Riordan W; SOLO I and SOLO II investigators. Single Intravenous Dose of Oritavancin for Treatment of Acute Skin and Skin Structure Infections Caused by Gram-Positive Bacteria: Summary of Safety Analysis from the Phase 3 SOLO Studies. Antimicrob Agents Chemother. 2018 Mar 27;62(4):e01919-17. doi: 10.1128/AAC.01919-17. Print 2018 Apr. PubMed 29358292 ↗
  • Deck DH, Jordan JM, Holland TL, Fan W, Wikler MA, Sulham KA, Ralph Corey G. Single-Dose Oritavancin Treatment of Acute Bacterial Skin and Skin Structure Infections: SOLO Trial Efficacy by Eron Severity and Management Setting. Infect Dis Ther. 2016 Sep;5(3):353-61. doi: 10.1007/s40121-016-0119-9. Epub 2016 Jul 1. Erratum In: Infect Dis Ther. 2016 Sep;5(3):363-5. doi: 10.1007/s40121-016-0127-9. PubMed 27370913 ↗
  • Corey GR, Good S, Jiang H, Moeck G, Wikler M, Green S, Manos P, Keech R, Singh R, Heller B, Bubnova N, O'Riordan W; SOLO II Investigators. Single-dose oritavancin versus 7-10 days of vancomycin in the treatment of gram-positive acute bacterial skin and skin structure infections: the SOLO II noninferiority study. Clin Infect Dis. 2015 Jan 15;60(2):254-62. doi: 10.1093/cid/ciu778. Epub 2014 Oct 6. PubMed 25294250 ↗
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Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Dec 2010, a primary completion of Jun 2013 and a completion of Jun 2013. It does not say whether these dates are actual or estimated.

Results were first posted in Apr 2021, 7 years 10 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 1, 2010
First posted
Dec 3, 2010
Start
Dec 2010
Primary completionActual
Jun 2013
CompletionActual
Jun 2013
Results first posted
Apr 13, 2021
Last update
May 5, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 5, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01252732
Responsible party
Sponsor
First posted
Dec 3, 2010
Start date
Dec 2010
Primary completion
Jun 2013
Completion
Jun 2013
Results posted
Apr 13, 2021
Last update
May 5, 2021

Study contacts

G. Ralph Corey, MD
principal investigator · Duke Clinical Research Institute

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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