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Pharmacokinetics, Safety, and Efficacy Trial of WR 279,396 (Paromomycin + Gentamicin Topical Cream) and Paromomycin Topical Cream for the Treatment of Cutaneous Leishmaniasis in Panama

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
U.S. Army Medical Research and Materiel Command
ClinicalTrials.gov Identifier:
NCT01083576
First received: March 8, 2010
Last updated: May 16, 2014
Last verified: May 2014

March 8, 2010
May 16, 2014
March 2010
June 2011   (final data collection date for primary outcome measure)
Number of Participants Who Obtained Final Clinical Cure of Index Lesion [ Time Frame: 168 days ] [ Designated as safety issue: No ]
Number of participants who had initial clinical cure (100% re-epithelialization of index lesion by Day 63) OR initial clinical improvements (> 50% re-epithelialization of index lesion followed by Day 63 by 100% re-epithelialization of the index lesion on or before Day 100), AND no relapse of index lesion.
Proportion of subjects with any detectable paromomycin or gentamicin plasma levels on a study day when blood for PK is collected • Determination of PK parameters in adults where data permits [ Time Frame: On Study Days 1 and 20, blood will be drawn from adult subjects pre-drug application and at 0.5h, 1h, 2h, 3h, and 4h ± 5 minutes and 8h, 12h, and 24h ± 15 minutes after application of cream to all lesions is completed. ] [ Designated as safety issue: No ]
Complete list of historical versions of study NCT01083576 on ClinicalTrials.gov Archive Site
  • Number of Participants Who Obtained a Modified Final Clinical Cure of All Lesions [ Time Frame: 168 days ] [ Designated as safety issue: No ]
    Final cure as defined by the primary outcome measure AND and cure of all other lesions by Day 168. (100% re-epithelialization of all ulcerated lesions and resolution of all other type of lesions)
  • Detectable Paromomycin or Gentamicin Plasma Levels [ Time Frame: 20 days ] [ Designated as safety issue: No ]
    Proportion of subjects with any detectable Paromomycin or Gentamicin plasma levels on a study day when blood for PK was collected
  • Paromomycin Plasma Concentrations in Adults [ Time Frame: Day 4 to Day 28 ] [ Designated as safety issue: No ]
    Paromomycin plasma concentrations following administration of paromomycin alone or WR 279,396 in adults
  • Paromomycin Plasma Concentrations in Children [ Time Frame: Days 1 and 20 ] [ Designated as safety issue: No ]
    Paromomycin plasma concentrations 4 hours following administration of paromomycin alone or WR 279,396 in children
  • Pharmacokinetic Parameter: Cmax [ Time Frame: 0, 0.5, 1.0, 2.0, 3.0, 4.0, 8.0, 12.0, 24.0 hours on both Days 1 and 20 ] [ Designated as safety issue: No ]
    Cmax of paromomycin following administration of paromomycin alone or WR 279,396 to adults in Panama
  • Pharmacokinetic Parameter: Tmax [ Time Frame: 0, 0.5, 1.0, 2.0, 3.0, 4.0, 8.0, 12.0, 24.0 hours on both Days 1 and 20 ] [ Designated as safety issue: No ]
    Tmax of paromomycin following administration of paromomycin alone or WR 279,396 to adults in Panama
  • Pharmacokinetic Parameter: Area Under the Curve (AUC) [ Time Frame: 0, 0.5, 1.0, 2.0, 3.0, 4.0, 8.0, 12.0, 24.0 hours on both Days 1 and 20 ] [ Designated as safety issue: No ]
    Area under the curve (AUC) of paromomycin following administration of paromomycin alone or WR 279,396 to adults in Panama
  • Pharmacokinetic Parameter: t(1/2) [ Time Frame: 0, 0.5, 1.0, 2.0, 3.0, 4.0, 8.0, 12.0, 24.0 hours on both Days 1 and 20 ] [ Designated as safety issue: No ]
    t(1/2) of paromomycin following administration of paromomycin alone or WR 279,396 to adults in Panama
  • Pharmacokinetic Parameter: Cmax/D [ Time Frame: 0, 0.5, 1.0, 2.0, 3.0, 4.0, 8.0, 12.0, 24.0 hours on both Days 1 and 20 ] [ Designated as safety issue: No ]
    Maximum observed plasma concentration divide by topical dose (Cmax/D) of paromomycin following administration of paromomycin alone or WR 279,396 to adults in Panama
  • Pharmacokinetic Parameter: AUC/D [ Time Frame: Days 1 and 20 ] [ Designated as safety issue: No ]
    Area under the plasma concentration-time curve over 24 hrs divided by topical dose (AUC/D) of paromomycin following administration of paromomycin alone or WR 279,396 to adults in Panama
Safety: AEs and vital signs; local site reactions, including solicited exam for pain and clinician exam for erythema/redness and swelling/edema; Blood creatinine Efficacy: final clinical cure [ Time Frame: Safety:AEs assessed at each visit, days 1 to 168; Any ongoing AEs at Day 168 ± 14 followed to resolution. Efficacy: >50% re-epithelialization of index lesion by Day 63; or 100% re-epithelialization of index lesion by Day 100 ] [ Designated as safety issue: No ]
Serum Creatinine Levels [ Time Frame: Day 1 and Day 20 ] [ Designated as safety issue: Yes ]
Blood creatinine was measured to assess possible nephrotoxicity associated with aminoglycosides
Not Provided
 
Pharmacokinetics, Safety, and Efficacy Trial of WR 279,396 (Paromomycin + Gentamicin Topical Cream) and Paromomycin Topical Cream for the Treatment of Cutaneous Leishmaniasis in Panama
Double-blind, Randomized, Pharmacokinetics, Safety, and Efficacy Trial of WR 279,396 (Paromomycin + Gentamicin Topical Cream) and Paromomycin Topical Cream for the Treatment of Cutaneous Leishmaniasis in Panama

The objectives of the study are to evaluate the pharmacokinetics (PK), safety, and efficacy of WR 279,396 (Paromomycin + Gentamicin Topical Cream) and Paromomycin Topical Cream in subjects with cutaneous leishmaniasis (CL).

This study is a single-site, randomized, double-blind, two group trial assessing the PK, safety and efficacy of WR 279,396 Topical Cream and Paromomycin Topical Cream in subjects with CL. Subjects will be screened over a period up to 28 days for eligibility including parasitology for confirmation of ulcerative CL. Subjects will be randomized in a targeted 1:1 ratio to receive either WR 279,396 (15% paromomycin + 0.5% gentamicin topical cream) (target n=15) or Paromomycin Topical Cream (15% paromomycin topical cream) (target n=15) by topical application to CL lesions once daily for 20 days. Because the primary objective of this trial is to determine PK in all age groups, subjects will be stratified by age: 5-11 yrs, 12-17 yrs, and ≥ 18 yrs with at least 6 PK subjects in each age stratum and no more than 18 total subjects will be randomized in any age range. A target of 30 subjects who complete the PK part of the study is the goal. Any subject who does not complete the PK portion of the study will be replaced with another subject from the same age group that will be given the same treatment assignment to maintain the balance. Safety will be assessed by monitoring adverse events (AEs), lesion site reactions, vital signs, and blood creatinine levels. The primary efficacy analysis will be by evaluation of an index lesion with secondary efficacy analyses including all lesions. Lesions will also be examined for parasite negativity by classical means (positive culture for promastigotes or microscopic identification of amastigotes in stained lesion tissue) on Day 21.

In adult subjects, on Days 1 and 20, blood will be collected prior to topical cream application and at 0.5h, 1h, 2h, 3h, and 4h ± 5 minutes and 8h, 12h, and 24h ± 15 minutes after completion of cream application to determine plasma levels of paromomycin and gentamicin to calculate PK parameters. Thus, the last blood draw in this series will occur on Day 21. In addition, blood will be collected on Days 4, 7, 12, and 17 ± 1 day before study drug application to examine trough plasma levels of paromomycin and gentamicin. A follow-up plasma sample for PK analysis will also be obtained on Day 28 ± 2 days.

Subjects under the age of 18 years will have a total of four blood samples drawn. The first will be drawn at pre-application and the second will be drawn at 4 hours ± 5 minutes after completion of application of the topical cream on Study Day 1. The third will be drawn pre-application and the fourth at 4 hours ± 5 minutes after completion of application of the topical cream on Study Day 20. Subjects who receive Paromomycin Topical Cream are not expected to have blood levels of gentamicin, but as the study is blinded, plasma specimens will be tested for both paromomycin and gentamicin.

The index lesion (primary ulcerated) and all other ulcerated lesions will be assessed for clinical response by measurement of the length and width of area of ulceration. A lesion will be considered to be completely cured if 100% re-epithelialization is observed (i.e., this is a measurement of ulceration of 0 x 0 mm). Non-ulcerated lesions will also be measured to monitor the total area of exposure of lesions to study drug and will be evaluated for cure (i.e., absence of signs of an active lesion).

Subjects will have an in-clinic follow-up weekly (Days 28, 35, 42, 49, 56, and 63 ± 2 days) after completion of treatment for safety assessments, lesion measurements, and lesion photographs. On Day 21, index lesions in adult subjects that have not completely re-epithelialized will be assessed for parasites by classical means (positive culture for promastigotes or microscopic identification of amastigotes in stained lesion tissue). An interim analysis of all of the data collected on all subjects who were randomized and completed the nominal Day 63 follow-up will be performed to make decisions about the final design of a Phase 3 trial. Subjects will continue to be followed for outcomes at Day 100 and 168 ± 14 days. A final analysis of outcomes after the longer term followup period has been completed for all subjects will be performed when the trial is closed. Follow-up evaluations include AEs, medication use, lesion measurements, and lesion photographs.

Patients who fail therapy (see definition of failure below) may be administered rescue therapy at the discretion of the patient's personal physician.

Interventional
Phase 2
Allocation: Non-Randomized
Endpoint Classification: Pharmacokinetics Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Treatment
Leishmaniasis, Cutaneous
  • Drug: WR 279,396 (15% paromomycin + 0.5% gentamicin topical cream)
    topical application to CL lesions once daily for 20 days
    Other Name: Topical paromomycin/gentimicin cream
  • Drug: Paromomycin Alone Cream (15% paromomycin topical cream)
    topical application to CL lesions once daily for 20 days
  • Active Comparator: Paromomycin Alone Treatment
    Paromomycin Alone Cream (15% paromomycin topical cream): topical application to uncomplicated cutaneous leishmaniasis (CL) lesions once daily for 20 days
    Intervention: Drug: Paromomycin Alone Cream (15% paromomycin topical cream)
  • Active Comparator: WR 279,396
    WR 279,396 (15% paromomycin + 0.5% gentamicin topical cream): topical application to uncomplicated CL lesions once daily for 20 days
    Intervention: Drug: WR 279,396 (15% paromomycin + 0.5% gentamicin topical cream)
Ravis WR, Llanos-Cuentas A, Sosa N, Kreishman-Deitrick M, Kopydlowski KM, Nielsen C, Smith KS, Smith PL, Ransom JH, Lin YJ, Grogl M. Pharmacokinetics and absorption of paromomycin and gentamicin from topical creams used to treat cutaneous leishmaniasis. Antimicrob Agents Chemother. 2013 Oct;57(10):4809-15. doi: 10.1128/AAC.00628-13. Epub 2013 Jul 22.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
30
July 2011
June 2011   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • To be eligible for the study, the following must be answered "YES" or not applicable, as appropriate for the study subject:

    1. Is the subject a male or female at least 5 years-of-age?
    2. Is the subject or legal guardian able to give written informed consent or assent, as appropriate?
    3. Does the subject have a diagnosis of CL in at least one lesion by at least one of the following methods: 1) positive culture for promastigotes, or 2) microscopic identification of amastigotes in stained lesion tissue.
    4. Does the subject have at least one ulcerative lesion ≥ 1 cm and ≤ 5 cm, that meets the criteria for an index lesion?
    5. Is the subject willing to forego other forms of treatments for CL including other investigational treatments during the study?
    6. In the opinion of the investigator, is the subject (or their legal guardian) capable of understanding and complying with the protocol?
    7. If female and of child-bearing potential, did the subject have a negative pregnancy test during screening and agree to use an acceptable method of birth control during the treatment phase and for 1 month after treatment is completed?
    8. Does the subject have adequate venous access for blood draws?

Exclusion Criteria:

To be eligible for the study, the following must be answered "NO" or not applicable as appropriate for the study subject:

  1. Does the subject have only a single lesion whose characteristics include any of the following: verrucous or nodular lesion (non-ulcerative), lesion <1 cm in its greatest diameter, lesion in a location that in the opinion of the Investigator is difficult to maintain application of study drugs topically?
  2. Does the subject have a lesion due to leishmania that involves the mucosa or palate or any signs of mucosal disease that might be due to leishmania?
  3. Does the subject have signs and symptoms of disseminated disease in the opinion of the Principal Investigator?
  4. Does the subject have > 10 lesions?
  5. Is the subject a female who is breast-feeding?
  6. Does the subject have an active malignancy or history of solid, metastatic or hematologic malignancy with the exception of basal or squamous cell carcinoma of the skin that has been removed?
  7. Does the subject have significant organ abnormality, chronic disease such as diabetes, severe hearing loss, evidence of renal or hepatic dysfunction, or creatinine, aspartate aminotransferase (AST), or alanine aminotransferase (ALT) greater than 15% above the upper limit of normal (ULN) as defined by the clinical laboratory defined normal ranges?
  8. Has the subject received treatment for leishmaniasis including any medication with pentavalent antimony including sodium stibogluconate (Pentostam), meglumine antimoniate (Glucantime); amphotericin B (including liposomal amphotericin B and amphotericin B deoxycholate); or other medications containing paromomycin (administered parenterally or topically) or methylbenzethonium chloride (MBCL); gentamicin; fluconazole; ketoconazole; pentamidine; miltefosine, azithromycin or allopurinol that was completed within 8 weeks of starting study treatments?
  9. Does the subject have a history of known or suspected hypersensitivity or idiosyncratic reactions to aminoglycosides?
  10. Does the subject have any other topical disease/condition which would interfere with the objectives of this study?
Both
5 Years and older
No
Contact information is only displayed when the study is recruiting subjects
Panama
 
NCT01083576
PG-PANAMA-08-04; A-15810
No
U.S. Army Medical Research and Materiel Command
U.S. Army Medical Research and Materiel Command
Not Provided
Principal Investigator: Nestor Sosa, M.D. FACP Instituto Conmemorativo Gorgas de Estudios de la Salud
U.S. Army Medical Research and Materiel Command
May 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP