Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT04167085 |
Other study ID # |
16-001827 |
Secondary ID |
|
Status |
Completed |
Phase |
Phase 4
|
First received |
|
Last updated |
|
Start date |
December 18, 2017 |
Est. completion date |
June 1, 2021 |
Study information
Verified date |
June 2022 |
Source |
University of California, Los Angeles |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
The purpose of this research study is to determine whether Doxycycline can be used to control
nosebleeds (epistaxis) for patients with Hereditary Hemorrhagic Telangiectasia (HHT).
Patients with HHT will be randomized to one of 2 study arms: Doxycycline or Placebo for a
period of 2 months followed by a 1-month washout period before switching treatments for a
further 2 months period. Observation and evaluation will continue for a period of one month
after treatment is completed.
Description:
This study will analyze the effect of doxycycline on nosebleeds in hereditary hemorrhagic
telangiectasia (HHT), a rare and debilitating medical condition. Patients with HHT have a
variety of vascular abnormalities, including changes in their nasal vasculature that result
in chronic, severe nosebleeds. These nosebleeds have been shown to significantly reduce the
quality of life in HHT and can be severe enough to require emergent blood transfusion.
Current therapies to control nosebleeds in HHT, which include both medications and surgical
treatments, are inconsistently effective and associated with a variety of problematic side
effects and complications.
Doxycycline is a common, FDA-approved antibiotic medication that has been used by physicians
for decades. It is a safe medication that can be used on an outpatient basis for extended
periods of time with minimal side effects. Recent research has shown that doxycycline is a
potent inhibitor of angiogenesis, the process of new blood vessel development. Since the
vascular abnormalities in HHT form due to uncontrolled angiogenesis, it follows that
doxycycline may have potential in treating HHT. A growing body of research demonstrates the
efficacy of doxycycline in treating a variety of vascular conditions, including cancer of the
breast, duodenum, liver prostate, and lung. Our trial will be the first to analyze the
efficacy of doxycycline in treating HHT epistaxis.
This a randomized, double-blind, crossover study design. Each patient will take both placebo
and doxycycline. Since this is a cross-over study, half the participants will start out with
taking placebo and half start with doxycyline and then switch halfway through. After a
baseline observation period, participants will be given doxycycline at 100 mg twice a day, or
an identical-appearing placebo, for a period of three months. Each month they will be seen be
a physician, who will take a detailed clinical history and perform a physical examination.
Further, each month the patient will have blood testing to assess blood loss, and fill out
scientifically validated surveys to assess quality of life and the severity of bleeding.
Following this three month treatment period, participants will be observed for one additional
month, with one additional blood test and clinical assessment performed after this month.