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NCT03964493: P2_ABSSSI

TNP-2092 to Treat Acute Bacterial Skin and Skin Structure Infection

Completed Phase 2 Results posted Last updated 1 December 2023
What this trial tests

Phase 2 trial testing TNP-2092 in Skin and Subcutaneous Tissue Bacterial Infections in 120 participants. Completed in 28 September 2020.

Timeline
20 April 2019
Primary endpoint
28 September 2020
28 September 2020

Quick facts

Lead sponsorTenNor Therapeutics Limited
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingquadruple
Primary purposetreatment
Enrollment120
Start date20 April 2019
Primary completion28 September 2020
Estimated completion28 September 2020
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

TenNor Therapeutics Limited — full company profile →

Who can join

18 and older, any sex, with Skin and Subcutaneous Tissue Bacterial Infections or Gram-Positive Bacterial Infections. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Early Clinical Response at the Early Assessment (EA) Visit in the Intent-to-Treat (ITT) Population Primary · 48 to 72 hours after the first dose of study treatment

Early clinical response is defined as responder meeting two criteria: (1) patient had at least a 20% reduction of acute bacterial skin and skin structure infection (ABSSSI) primary lesion size compared to baseline measurements; (2) patient did not die of any cause within 72 hours of the first dose of study treatment. An indeterminate classification is used for a response that could not be adequately inferred because study data are unavailable for evaluation of efficacy for any reason (eg, missing data, lost to follow-up, did not attend the EA clinic appointment), or if the early assessment vis

Responder
GroupValue95% CI
TNP-209261
Vancomycin27
Nonresponder
GroupValue95% CI
TNP-20924
Vancomycin3
Indeterminate
GroupValue95% CI
TNP-209215
Vancomycin10
Early Clinical Response at the Early Assessment Visit in the Modified Intent-to-Treat (mITT) Population Primary · 48 to 72 hours after the first dose of study treatment

Early clinical response is defined as responder meeting two criteria: (1) patient had at least a 20% reduction of acute bacterial skin and skin structure infection (ABSSSI) primary lesion size compared to baseline measurements; (2) patient did not die of any cause within 72 hours of the first dose of study treatment. An indeterminate classification is used for a response that could not be adequately inferred because study data are unavailable for evaluation of efficacy for any reason (eg, missing data, lost to follow-up, did not attend the EA clinic appointment), or if the early assessment vis

Responder
GroupValue95% CI
TNP-209260
Vancomycin27
Nonresponder
GroupValue95% CI
TNP-20924
Vancomycin3
Indeterminate
GroupValue95% CI
TNP-209214
Vancomycin10
Early Clinical Response at the Early Assessment Visit in the Micro-Intent-to-Treat (Micro-ITT) Population Primary · 48 to 72 hours after the first dose of study treatment

Early clinical response is defined as responder meeting two criteria: (1) patient had at least a 20% reduction of acute bacterial skin and skin structure infection (ABSSSI) primary lesion size compared to baseline measurements; (2) patient did not die of any cause within 72 hours of the first dose of study treatment. An indeterminate classification is used for a response that could not be adequately inferred because study data are unavailable for evaluation of efficacy for any reason (eg, missing data, lost to follow-up, did not attend the EA clinic appointment), or if the early assessment vis

Responder
GroupValue95% CI
TNP-209241
Vancomycin19
Nonresponder
GroupValue95% CI
TNP-20923
Vancomycin2
Indeterminate
GroupValue95% CI
TNP-20927
Vancomycin8
Investigator Assessment of Clinical Response at Post Treatment Evaluation (PTE) Visit in the mITT Population Secondary · 7 to 14 days after the end of study treatment

At the PTE Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the ABSSSI sufficiently resolved such that further antibacterial therapy is not needed. Clinical Failure: any of the following: (1)Investigator discontinued study treatment and indicated that the ABSSSI had responded inadequately such that alternative (rescue) non-study antibacterial therapy was needed; (2)participant received antibacterial therapy for a different infection that may be effective for the ABSSSI under study; (3) partici

GroupValue95% CI
TNP-209262
Vancomycin31
TNP-20922
Vancomycin3
TNP-209214
Vancomycin6
Investigator Assessment of Clinical Response at Post Treatment Evaluation (PTE) Visit in the Micro-ITT Population Secondary · 7 to 14 days after the end of study treatment

At the PTE Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the ABSSSI sufficiently resolved such that further antibacterial therapy is not needed. Clinical Failure: any of the following: (1)Investigator discontinued study treatment and indicated that the ABSSSI had responded inadequately such that alternative (rescue) non-study antibacterial therapy was needed; (2)participant received antibacterial therapy for a different infection that may be effective for the ABSSSI under study; (3) partici

GroupValue95% CI
TNP-209240
Vancomycin23
TNP-20922
Vancomycin1
TNP-20929
Vancomycin5
Investigator's Assessment of Clinical Response at the End of Treatment (EOT) Visit in the mITT Population Secondary · After a minimum of 7 days up to 14 days of study treatment

At the EOT Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the ABSSSI sufficiently resolved such that further antibacterial therapy is not needed. Clinical Failure: any of the following: (1)Investigator discontinued study treatment and indicated that the ABSSSI had responded inadequately such that alternative (rescue) non-study antibacterial therapy was needed; (2)participant received antibacterial therapy for a different infection that may be effective for the ABSSSI under study; (3) partici

GroupValue95% CI
TNP-209268
Vancomycin31
TNP-20922
Vancomycin3
TNP-20928
Vancomycin6
Investigator's Assessment of Clinical Response at the End of Treatment (EOT) Visit in the Micro-ITT Population Secondary · After a minimum of 7 days up to 14 days of study treatment

At the EOT Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the ABSSSI sufficiently resolved such that further antibacterial therapy is not needed. Clinical Failure: any of the following: (1)Investigator discontinued study treatment and indicated that the ABSSSI had responded inadequately such that alternative (rescue) non-study antibacterial therapy was needed; (2)participant received antibacterial therapy for a different infection that may be effective for the ABSSSI under study; (3) partici

GroupValue95% CI
TNP-209245
Vancomycin23
TNP-20922
Vancomycin1
TNP-20924
Vancomycin5
AUC0-12h After First Infusion Secondary · 0 to 12 hours post-dose

Partial area under the concentration versus time curve from time zero to time 12 hours.

GroupValue95% CI
TNP-2092135000± 38200
AUC0-12h After Last Infusion Secondary · 0 to 12 hours post-dose

Partial area under the concentration versus time curve from time zero to time 12 hours

GroupValue95% CI
TNP-2092159000± 74200
Cmax After Last Infusion Secondary · 57 to 60 minutes, 1.5 to 3 hours, 4 to 6 hours, 12 hours, after the last infusion

Maximum observed concentration

GroupValue95% CI
TNP-209238500± 13400
Cmax After First Infusion Secondary · 57 to 60 minutes, 1.5 to 3 hours, 4 to 6 hours, 12 hours, after the first infusion

Maximum observed concentration

GroupValue95% CI
TNP-209237500± 13500

Adverse events — posted to ClinicalTrials.gov

Time frame: Adverse events were assessed from the first day of study treatment (day 1) to long-term follow-up visit(20 to 25 days after end of treatment), A Serious Adverse event (SAE) will be followed until resolution, stabilization, the event is otherwise explained, or the participant is lost to follow-up.. Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

TNP-2092
Serious: 1/78 (1%)
Deaths: 0/78
Vancomycin
Serious: 2/39 (5%)
Deaths: 0/39

Serious adverse events (3 terms)

ReactionSystemTNP-2092Vancomycin
MRSA bacteremia and worsening cellulitisSkin and subcutaneous tissue disorders
mental status changesPsychiatric disorders
left upper extremity abscess,dehydrationSkin and subcutaneous tissue disorders
Other adverse events (4 terms — click to expand)

ReactionSystemTNP-2092Vancomycin
NauseaGastrointestinal disorders
CellulitisSkin and subcutaneous tissue disorders
VomitingGastrointestinal disorders
Wound infectionInfections and infestations

Most-reported serious reactions: MRSA bacteremia and worsening cellulitis, mental status changes, left upper extremity abscess,dehydration.

Data from ClinicalTrials.gov NCT03964493 adverse events section.

Sponsor's own description

The purpose of this study is to evaluate safety, tolerability, pharmacokinetic characteristics and efficacy of TNP-2092 in adults with ABSSSI suspected or confirmed to be caused by gram-positive pathogens.

Publications & conference data

8 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Antibiotics in the clinical pipeline in October 2019.
    Butler MS, Paterson DL. · · 2020 · cited 174× · PMID 32152527 · DOI 10.1038/s41429-020-0291-8
  2. Antibiotics in the clinical pipeline as of December 2022.
    Butler MS, Henderson IR, Capon RJ, Blaskovich MAT. · · 2023 · cited 147× · PMID 37291465 · DOI 10.1038/s41429-023-00629-8
  3. The Role of Five-Membered Heterocycles in the Molecular Structure of Antibacterial Drugs Used in Therapy.
    Rusu A, Moga IM, Uncu L, Hancu G. · · 2023 · cited 49× · PMID 38004534 · DOI 10.3390/pharmaceutics15112554
  4. Macrocycle-Antibiotic Hybrids: A Path to Clinical Candidates.
    Surur AS, Sun D. · · 2021 · cited 36× · PMID 33996753 · DOI 10.3389/fchem.2021.659845
  5. Novel drug candidates against antibiotic-resistant microorganisms: A review.
    Lim JS, Chai YY, Ser WX, Haeren AV, et al · · 2024 · cited 14× · PMID 38234674 · DOI 10.22038/ijbms.2023.71672.15593
  6. Bifunctional antibiotic hybrids: A review of clinical candidates.
    Koh AJJ, Thombare V, Hussein M, Rao GG, et al · · 2023 · cited 13× · PMID 37397488 · DOI 10.3389/fphar.2023.1158152
  7. Antibacterials with Novel Chemical Scaffolds in Clinical Development.
    Heimann D, Kohnhäuser D, Kohnhäuser AJ, Brönstrup M. · · 2025 · cited 10× · PMID 39847315 · DOI 10.1007/s40265-024-02137-x
  8. Staph wars: the antibiotic pipeline strikes back.
    Douglas EJA, Laabei M. · · 2023 · cited 10× · PMID 37656158 · DOI 10.1099/mic.0.001387

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Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03964493.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing