Active clinical trials for "Onchocerciasis"

The purpose of this phase 3b study is to determine the safety of a single dose of moxidectin, compared to a single dose of ivermectin, in individuals living in onchocerciasis endemic areas and in individuals living in onchocerciasis endemic areas with high levels of lymphatic filariasis co-endemicity receiving concomitant albendazole.

The trial evaluates safety, tolerability, pharmacodynamics, pharmacokinetics, dose-response, and efficacy of emodepside tablets, administrated as a range of dose regimens, in adults infected with Onchocerca Volvulus.

The primary purpose of this phase 3b study is to determine the safety and efficacy of moxidectin administration twice a year, compared to once a year, in maintaining undetectable levels in skin of O. volvulus microfilaria in skin, the parasite that causes river blindness. Secondary purposes are to determine the effectiveness of moxidectin compared to ivermectin once or twice a year in maintaining undetectable levels, or reducing levels, of skin microfilaria.

This study aims at evaluating the safety and efficacy of Moxidectin 2 mg in patients with low intensities of microfilariae of Loa loa.

This study will investigate the safety and effectiveness of combination regimens in persons with onchocerciasis when it is administered after pre-treatment with ivermectin to clear or greatly reduce microfilariae from the skin and eyes.

This study aims at evaluating the diagnosis performances of the LTS-2 DEC patch for onchocerciasis compared to the gold standard which are the skin snips. This study will be conducted in Cameroon in two different areas : Ngog-Mapubi and Bafia Health Districts (one area only endemic for onchocerciasis, and one area endemic for both loiasis and onchocerciasis).

This study will evaluate and treat patients with filarial infections to explore in depth the immunology of the disease, including susceptibility to infection, disease development, and response to treatment. Filarial infections are caused by parasitic worms. The immature worm (larva) is transmitted to a person through a mosquito bite and grows in the human body to 2 to 4 inches in length. Although many of these infections do not produce symptoms, especially in the early stages of infection, others can have serious consequences, including swelling of the limbs or genitalia, allergic-lung problems, skin rash, eye inflammation that can lead to blindness, and heart disease. This protocol does not involve any experimental diagnostic procedures or treatments, and will use only procedures employed in the standard practice of medicine. Persons between 3 and 100 years of age diagnosed with or suspected of infection with Wuchereria bancrofti, Bugia malayi, Onchocerca volvulus, Loa loa, or other parasitic worms may be eligible for this study. Participants will have routine tests to determine the specific type of filarial infection. These may include special tests of the lungs, skin or heart, depending on the type of parasite suspected. Patients with skin reactions may have a "punch biopsy" to examine a small piece of affected skin. For this procedure, an area of skin is numbed with an anesthetic and a small circular area, about 1/3-inch in diameter and 1/2-inch thick, is removed using a sharp cookie cutter-type instrument. Some patients may require bronchoalveolar lavage. For this procedure, the mouth and throat are numbed with lidocaine jelly and spray and, if needed, a sedative is given for comfort. A small plastic tube is placed in a vein to give medications. A pencil-thin tube is then passed through the nose or mouth into the lung airways to examine the airways. Salt water is injected through the bronchoscope into the air passage, acting as a rinse. A sample of the fluid is then withdrawn and examined for infection, inflammatory cells and inflammatory chemicals. (Bronchoalveolar lavage is done only if medically necessary and only on patients 21 years or older.) Once the diagnosis is established, standard treatment will be instituted with either diethylcarbamazine or ivermectin, depending on the type of infection. Additional procedures for research purposes include: Extra blood draws to study immune cells and other immune substances. (This is the only research procedure that will be done in - More frequent and extensive follow-up evaluations than usual for routine care. They will include physical examination and blood studies. Urine collections at specified periods, possibly including 24-hour collections. Skin tests to examine the body s reaction to allergens-common environmental substances, such as cat dander or pollen-that cause an allergic reaction. The test is done in one of two ways: either the skin is lightly scratched and an allergen extract is placed over the just-broken skin, or a very fine needle is used to inject a small amount of allergen under the skin. In both methods, the site is monitored for swelling or hives in the next 48 hours. Leukapheresis (only on patients 21 or older ) to collect quantities of white blood cells. Whole blood is collected through a needle in an arm vein, similar to donating blood. The blood circulates through a machine that separates it into its components, and the white cells are removed. The rest of the blood is returned to the body, either through the same needle or through another needle in the other arm.

Onchocerciasis is a major public health problem in affected countries that causes disease-induced disability, and overall loss of economic productivity. The purpose of this study is to determine how safe and effective ABBV-4083 in combination with albendazole is in treating participants with Onchocerciasis. ABBV-4083 is an investigational drug being developed for the treatment of onchocerciasis. This study is conducted in 2 parts. In part 1, participants are randomly assigned to 1 of 5 groups, called treatment arms to determine the most efficient treatment combination. Each group receives a different treatment. In part 2, participants are randomly assigned to 1 of 4 treatment arms. Approximately 444 or 486 adult participants with a diagnosis of onchocerciasis will be enrolled in approximately 2 sites in Democratic Republic of Congo. Participants in Part 1 will receive different treatment combinations of ABBV-4083 and/or albendazole and/or matching placebo capsules for 14 days. Participants in Part 2 will most effective treatment combination determined in Part 1 for 14 days followed by ivermectin or matching placebo capsules at Month 6. Duration of treatment is 24 months. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests and checking for side effects.

Lymphatic filariasis and onchocerciasis are a group of neglected tropical diseases caused by the transmission of worm larvae (microfilaria) by biting insects. Once a human is infected, the larvae mature into adult worms that release huge numbers of larvae into the lymphatics for 5-15 years. The larvae cause tissue damage resulting in the disabling diseases of elephantiasis (gross leg and scrotal swelling) and river blindness. These diseases affect 160 million people and are acknowledged major public health problems in the tropics. Current treatments mainly target the larvae but not the adult worms that live for years, meaning that repeated courses of treatment over many years are needed. These repeated courses are usually delivered at population level in the form of mass drug administration programmes. For the adult worms to be able to grow, reproduce and infect more humans they are dependent on a bacterium which lives inside them. This bacterium (Wolbachia) is not naturally found in humans. Some drugs are able to target Wolbachia, however they are unsuitable for mass drug administration programmes because they have to be given for 4-6 weeks and cannot be used in children or pregnant women. AWZ1066S is a novel drug developed in Liverpool that has been shown in experimental models to target Wolbachia and indirectly kill the adult parasitic worms after a 7 day course. After extensive safety testing in animals we are conducting a Phase 1, first in human study, to assess the safety, tolerability and pharmacokinetics of ascending single and multiple oral doses of AWZ1066S in healthy volunteers. The study is a single centre study, will last approximately 1 year and will take place in a dedicated Phase 1 trial unit. Depending on which group they are enrolled into, participants will take either one dose, two doses or seven doses and their involvement will last between 38 and 45 days. Participants will be closely monitored for adverse effects.

The primary purpose of this study was to determine the safety and tolerability of moxidectin in subjects infected with Onchocerca volvulus (a parasitic worm).