A 24 Month Study to Compare Efficacy of Doxycycline vs Placebo for Improving Filarial Lymphedema in India (LeDoxy-India)
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT02929121|
Recruitment Status : Active, not recruiting
First Posted : October 10, 2016
Last Update Posted : February 25, 2020
Current lymphedema management protocols are based on the use of simple measures of hygiene (regular washing with soap and water, skin and nail care), use of topical antibiotics or antifungal agents, exercise and footwear. This is considered the "standard of care" in most endemic countries in the absence of any structured treatment programs. Previous controlled clinical trials and extensive field experience have shown the benefit of these measures in reducing the frequency of attacks of acute dermato-lymphangio-adenitis (ADLA) that drive the progression of lymphedema.
In the present study, the progression of lymphedema in a group of patients who receive a six-week course of doxycycline will be compared with that of a group who receives doxycycline "look-alike" placebo tablets. However, both groups will be enrolled into a standardized "regimen of hygiene" described above. Thus, patients enrolled in the "placebo" group also will receive the current standard of care, and the placebo used in the study will help to identify the benefits of doxycycline on a background of simple hygiene measures. The regimens will be explained to all participants who will be trained to use established standardized methods of hygiene and be effectively applying it prior to the initiation of the drug treatment. In addition, patients will be evaluated at 3, 6, 12 and 24 months.. A common, generic SOP with handouts that describes methods and the training schedule will be used so that similar methods are employed across all sites.
|Condition or disease||Intervention/treatment||Phase|
|Lymphedema Lymphatic Filariasis Filariasis||Drug: Doxycycline Drug: Placebo||Phase 3|
This (LEDOXY) trial is designed as a randomized, controlled, observer-, provider- and patient-blinded multicenter superiority trial with two parallel groups and a primary endpoint of change in grade of lymphedema at 24 months. The population will be stratified according to the Grade (Early Grade 1-3; Late Grade 4-6). Randomization will be performed as block randomization within each center in blocks of (N=4-10) for each of the groups (Early and Late).
The effect of a 6-week course doxycycline on lymphedema without active filarial infection has been demonstrated in a single setting in Africa (Ghana). In order to expand the benefits of this observation, similar studies need to be carried out in other endemic settings. Lymphatic filariasis is endemic in many countries of Africa and Asia that are yet to implement morbidity management programmes. In addition, the components of the proposed hygiene package are likely to vary depending on the availability of material and human resources. The conduct of this trial as a multi-center study will not only allow the evaluation of the efficacy of the drug in a variety of settings but also facilitate its rapid adoption by the respective control programmes of endemic countries, if proven to be useful.
The choice of study sites in endemic countries has been made based on the availability of a) adequate numbers of patients with various grades of lymphedema and b) clinical trial teams familiar with lymphedema management procedures and past experience with similar trials.
All screened patients will be enrolled into a programme of hygiene (described below) and will be required to demonstrate ability to use established standardized methods of hygiene and effectively applying it prior to the initiation of the drug treatment. Eligible patients will be randomized to receive either daily doxycycline or placebo. Doxycycline and placebo will be provided by Medopharm (India). Re-labeling and packaging of the drug and the placebo will be done by Piramal Healthcare, Morpeth, UK.
Additionally, after un-blinding and data analysis, the placebo group will be offered doxycycline treatment if the intervention proves to be more effective in ameliorating LE.
Both doxycycline and placebo will be administered under supervision (directly observed treatment) for 6 weeks. The first dose of doxycycline (two 100 mg tablets for those over 50kg body weight and one 100 mg tablets for those between 40 and 50 kg body weight) or placebo will be given after all the investigations have been completed and informed consent has been obtained and the patient has been initiated into the programme of basic hygiene. Patients will be encouraged to eat before swallowing the tablets whole with a glass of water. Vomited doses will be replaced.
Ideally, patients will be required to come every day to the closest community health center to take their drugs under supervision. Subjects living in villages at a distance from any health center will be treated by the community health care provider or the local caregiver living in this village who will be informed and trained in the possible adverse events related to the drug.
Since some study sites may be village based without a health centre, patients may be treated in their village and required to attend daily at a fixed meeting point. The trial clinician and the research team with the help of trained community health workers will normally administer the treatment. Patients should come to the clinic every week with the patient and collect the drugs for one week. The provider will keep a diary where he or she will mark down the time of intake of the drug. A health worker may make surprise checks at the patient's residence by looking at the diary and also by counting the remaining drugs to estimate compliance.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||235 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)|
|Official Title:||A Multi-center, Double-blind, Randomized, 24-month Study, to Compare the Efficacy of Doxycycline Once Daily for 6 Weeks Versus Placebo in Improving Filarial Lymphedema Independent of Active Filarial Infection|
|Actual Study Start Date :||January 15, 2019|
|Estimated Primary Completion Date :||July 29, 2021|
|Estimated Study Completion Date :||December 15, 2021|
Active Comparator: Doxycycline
The Doxycycline treated group will enroll 125 participants. 100 patients with Grades 1-3 lymphedema per study site (based on end point and duration) and up to 25 patients with grade 4-6 lymphedema/per study site. Each patient will receive Doxycycline hyclate 200 mg per day x 6 weeks for patients >50 kg or 100 mg per day for patients <50 kg).
Once daily tablet for 6 weeks: Doxycycline hyclate 200 mg per day x 6 weeks for patients >50 kg or 100 mg per day for patients <50 kg)
Other Name: Doxycycline hyclate
Placebo Comparator: Placebo
The Placebo treated group will enroll 125 participants. 100 patients with Grades 1-3 lymphedema per study site (based on end point and duration) and up to 25 patients with grade 4-6 lymphedema/per study site. Each patient will receive matching tablets containing no active ingredients.
Once daily tablet for 6 weeks: matching tablets containing no active ingredients
- Change in Lymphadema Grade [ Time Frame: 24 months ]Change in lymphedema grade at 24 months compared to baseline
- Change in number of acute attacks [ Time Frame: 24 months ]Change in number of acute attacks
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02929121
|Filariasis Research Unit Govt. T. D. Medical College Hospital|
|Alappuzha, Kerala, India, 688005|
|Principal Investigator:||Eric Ottesen, MD||The Task Force for Global Health|