TEMPO Study: Trimethoprim-Sulfamethoxazole in Granulomatosis With Polyangiitis (TEMPO)

Trimethoprim-Sulfamethoxazole Effects on the Nasal Microbiome in Granulomatosis With Polyangiitis

Granulomatosis with polyangiitis (GPA; Wegener's) is a multi-organ autoimmune disease characterized by necrotizing granulomatous inflammation and vasculitis. Upper respiratory involvement occurs in up to 90% of patients with GPA and is often the first manifestation of the disease. Patients with upper respiratory tract disease are more at risk of local and systemic relapse. Microbial organisms may be involved in inducing disease activity in GPA. Previous culture-dependent studies found that patients with GPA were more likely to be chronic nasal carriers of Staphylococcus aureus compared to non-GPA chronic rhinosinusitis and healthy controls; additionally, GPA patients with S. aureus colonization are more likely to experience a future relapse. This led to a randomized placebo-controlled trial of trimethoprim-sulfamethoxazole (TMP-SMX) which showed this antibiotic/antifungal was effective in preventing relapse in GPA. Whether the benefits of TMP-SMX are related to its antimicrobial properties versus anti-inflammatory effects is still unknown. The objective of this study is to prospectively evaluate the changes in the nasal microbiome, mycobiome, and host immunity in patients with GPA before, during, and after receipt of TMP-SMX for 4 weeks. The target enrollment number is 30 participants, and the investigators will include patients seen at the Penn Vasculitis Center with GPA (diagnosed according to the American College of Rheumatology Classification Criteria or based on investigator's judgment). To analyze nasal microbiome and host immunity, participants will be swabbed with nasal swab and cytobrush for DNA sequencing and other studies. An optional research blood draw is also included. The investigators and coordinators will follow each patient longitudinally over a 6-month period.

Study Overview

• Status: Active, not recruiting
• Conditions: Granulomatosis With Polyangiitis; Wegener Granulomatosis
• Intervention / Treatment: Drug: Trimethoprim Sulfamethoxazole

• Study Type: Interventional
• Enrollment (Actual): 8
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• United States
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19104
      • Perelman Center for Advanced Medicine

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Patients must be at least 18 year of age or older
• Both male and female gender will be included
• Patients with GPA will be defined according to classification criteria or according to the investigator's judgment
• Patients must have history of sinonasal involvement related to GPA
• Patients must also be in remission for at least 3 months and expect to remain on stable immunosuppressive therapies for the next 24 weeks, with the exception of minor prednisone changes
• Prednisone dose or equivalent less than or equal to 10mg at enrollment

Exclusion Criteria:

• Receipt of oral antibiotics or antifungals within past 6 weeks including antimicrobials for prevention of Pneumocystis jiroveci pneumonia
• Infection involving sinuses or nose in past 4 weeks
• Receipt of topical nasal antibiotics (including mupirocin) within the past 4 weeks
• Contra-indication or prior adverse reaction to TMP-SMX such as sulfa allergy, severe renal insufficiency (CrCl < 15 ml/min) or severe hepatic failure according to most recent labs in past 6 months
• At risk for drug interactions related to TMP-SMX
• Intra-nasal cocaine use in prior 3 months
• Known history of HIV or primary immunodeficiency syndrome
• Pregnant or planning to become pregnant in the next 6 months

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: On Drug	Drug: Trimethoprim Sulfamethoxazole; Dosage: 160mg-800mg Frequency: 2 times a day Dosage Form: Pill (oral) Duration: 4 weeks

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
nasal microbiome in relative abundance ( host gene expression in proportion)	24 weeks

Collaborators and Investigators

• Sponsor: University of Pennsylvania

Study record dates

Study Major Dates

• Study Start (Actual): March 27, 2019
• Primary Completion (Estimated): September 30, 2025
• Study Completion (Estimated): September 30, 2025

Study Registration Dates

• First Submitted: April 5, 2019
• First Submitted That Met QC Criteria: April 17, 2019
• First Posted (Actual): April 18, 2019

Study Record Updates

• Last Update Posted (Actual): July 14, 2023
• Last Update Submitted That Met QC Criteria: July 13, 2023
• Last Verified: July 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Cardiovascular Diseases; Vascular Diseases; Skin Diseases; Respiratory Tract Diseases; Immune System Diseases; Autoimmune Diseases; Lung Diseases; Vasculitis; Skin Diseases, Vascular; Lung Diseases, Interstitial; Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis; Granulomatosis with Polyangiitis; Systemic Vasculitis; Molecular Mechanisms of Pharmacological Action; Anti-Infective Agents; Enzyme Inhibitors; Anti-Bacterial Agents; Cytochrome P-450 Enzyme Inhibitors; Antiprotozoal Agents; Antiparasitic Agents; Antimalarials; Folic Acid Antagonists; Anti-Dyskinesia Agents; Anti-Infective Agents, Urinary; Cytochrome P-450 CYP2C8 Inhibitors; Trimethoprim; Sulfamethoxazole; Trimethoprim, Sulfamethoxazole Drug Combination
• Other Study ID Numbers: 831864

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No