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Systemic Rapamycin (Sirolimus) to Prevent In-Stent Restenosis Following Pulmonary Artery Stent Placement

NCT02365415 · Status: WITHDRAWN · Phase: PHASE2 · Type: INTERVENTIONAL

Last updated 2018-04-05

No results posted yet for this study

Summary

This is a research study to assess whether an oral medication can benefit some patients being treated for peripheral pulmonary stenosis (PPS), which is narrowing of the blood vessels that send blood to the lungs (pulmonary arteries).

In the cardiac catheterization laboratory, the investigators treat PPS by dilating the narrowed segments of pulmonary arteries using balloon catheters. Sometimes the investigators also place stents which are mesh tubes that help keep the narrowed vessel open. Some stents suffer from in-growth of tissue into the stents which causes recurrent obstructions inside the stent (i.e. making the opening inside the mesh tube narrow again), so called in-stent stenosis (ISS).

The purpose of this study is to use a medication that is approved for use in children (for a different purpose) to decrease the amount of cell ingrowth inside the stents (i.e. decrease the problematic in-stent stenosis). The medication is called rapamycin, also known as sirolimus (trade name Rapamune). It has antiproliferative properties which means that it slows down cell division which the investigators believe cause the recurrent narrowing inside stents.

Rapamycin is a medicine that can be taken by mouth as a liquid or pill or via a feeding tube. There will still be a need for interventions in the catheterization laboratory but the investigators hope that by taking this medicine some children would need fewer catheterizations in the future. Our early experiences with a few patients who have been treated with rapamycin due to in-stent stenosis in the pulmonary arteries suggest that it may be helpful.

In this study, patients and families who are interested in possibly trying this new approach will be randomized to sirolimus or no sirolimus. The investigators will compare the developement of ISS over time between these groups, in a hope to learn whether oral sirolimus reduces ISS development.

Conditions

  • Peripheral Pulmonary Stenosis
  • In-stent Stenosis

Interventions

DRUG

Sirolimus

8 weeks oral sirolimus, following drug levels

Sponsors & Collaborators

Principal Investigators

  • Audrey Marshall, MD · Boston Children's Hospital

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
6 Months
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2015-02-28
Primary Completion
2018-04-30
Completion
2018-04-30

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02365415 on ClinicalTrials.gov