Retapamulin for Reducing MRSA Nasal Carriage

Methicillin-Resistant Staphylococcus Aureus Clinical Trial

Official title:

Retapamulin for Reducing MRSA Nasal Carriage

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01461668
• Other study ID #: OCRT10049
• Status: Completed
• Phase: Phase 4
• First received: October 26, 2011
• Last updated: March 29, 2018
• Start date: July 2012
• Est. completion date: December 2017

Study information

• Verified date: March 2018
• Source: University of California, Irvine
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The investigators will conduct a randomized placebo-controlled double-blinded study of nasal decolonization with retapamulin vs. placebo for the eradication of MRSA nasal carriage among adult carriers with low-level (MIC 8-256) and high-level mupirocin resistant (MIC >256) strains.

Objectives:

1. To determine the percent of intervention vs. control patients with successful MRSA nasal decolonization as determined by bilateral nares swabs following a 5-day twice-a-day regimen of retapamulin.

2. To determine the time to decolonization based upon interim and final bilateral nares swabs.

3. To determine the acceptability of retapamulin by surveying participants about their experience and adverse events experienced during this study.

The duration of participant follow-up is expected to last up to 7 weeks.

This study will evaluate the safety and effectiveness of Altabax (retapamulin) during decolonization of MRSA carriers with mupirocin-resistant strains, stratified by low-level and high-level resistance to mupirocin. Mupirocin resistance is increasingly common and there is no approved substitute topical agent for decolonization of the MRSA nasal reservoir.

Description:

This study will evaluate the utility of retapamulin, a topical ointment FDA approved for skin infection, as a novel agent for MRSA decolonization and prevention of healthcare-associated MRSA infection. Retapamulin is a first-in-class semi-synthetic pleuromutilin antibiotic that inhibits protein synthesis by interacting with the bacterial ribosome 50S subunit. It received FDA approval in 2007 for the topical treatment of impetigo in adults and pediatric patients.

We propose to evaluate retapamulin as an investigational agent for the nasal decolonization of MRSA carriers whose strains demonstrate low-level and high-level resistance to mupirocin. Mupirocin resistance is increasingly common and there is no approved substitute topical agent for decolonization of the MRSA nasal reservoir.

We will conduct a randomized placebo-controlled double-blinded study of nasal decolonization with retapamulin vs. placebo for the eradication of MRSA nasal carriage among adult carriers with low-level (MIC 8-256) and high-level mupirocin resistant (MIC >256) strains. Randomization will be stratified by low vs high level resistance.

Consenting adult (at least 18 years old) subjects will be randomized to 1% retapamulin or placebo ointment intra-nasally twice a day for 5 days (D1-5) with follow up bilateral nares swab one week following completion of therapy (~D12) to assess clearance. If follow up swabs are positive for MRSA, patients will be given a second course of the same agent (retapamulin or placebo) to begin one week following swab collection (~D19-23) so that up to two decolonization attempts will be made. A final set of bilateral nares swabs will be obtained from all subjects six weeks from the completion of initial treatment (~D47).

Consenting adult (at least 18 years old)subjects will be given retapamulin or placebo. At the time of recruitment, all subjects will complete a detailed survey administered by trained research staff. This survey will include questions related to self care, home hygiene practices, and known risk factors for MRSA acquisition. Subject follow up will include repeat bilateral nares swabs and follow up surveys related to compliance, experience (side effects/concerns) with the assigned regimen, and ongoing risk factors will occur either during a home visit (or facility visit if the patient is admitted to a hospital or nursing home at the time of the required visit) or at the University of California Irvine (UCI) Institute for Clinical and Translational Science (ICTS), a Clinical and Translational Science Award (CTSA) site which provides clinic visit support for pilot studies.

Outcomes will include successful nares decolonization at the end of the follow up period (D47). We will detail the sequence of clearance or re-colonization based upon the two follow up nares swabs, as well as any adverse events, which are expected to be related to local irritation in a small percent of subjects.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 53
• Est. completion date: December 2017
• Est. primary completion date: December 2017
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• 18 years of age or older

• Have a type of MRSA that is resistant to mupirocin (a drug used to treat MRSA)

Exclusion Criteria:

• Allergic to retapamulin

• Unable to use retapamulin via your nose (i.e. nose surgery, etc.)

• Are pregnant and/or breastfeeding

Related Conditions & MeSH terms

• Methicillin-Resistant Staphylococcus Aureus
• Staphylococcal Infections

Intervention

Drug:
• Retapamulin
Two times a day for 5 days
• Placebo
Two times a day for 5 days

Locations

Country	Name	City	State
United States	University of California, Irivne	Irvine	California

Sponsors (2)

Lead Sponsor	Collaborator
University of California, Irvine	Agency for Healthcare Research and Quality (AHRQ)

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Proportion of Participants With MRSA Clearance	Proportion of participants with MRSA clearance at the end of the follow up period	47 days