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Last Updated: November 26, 2022

CLINICAL TRIALS PROFILE FOR ETHAMBUTOL HYDROCHLORIDE


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505(b)(2) Clinical Trials for Ethambutol Hydrochloride

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
New Combination NCT01589497 ↗ Essentiality of INH in TB Therapy Completed National Institute of Allergy and Infectious Diseases (NIAID) Phase 2 2015-06-30 Tuberculosis (TB) disease is caused by bacteria that have infected the lung. TB bacteria are very small living agents that are spread by coughing and can be killed by taking TB drugs. To kill these TB bacteria TB patients have to take a combination of four drugs for 2 months and then two drugs for a further 4 months. During the first 2 months patients take rifampicin, isoniazid, ethambutol, and pyrazinamide. After that patients take only isoniazid and rifampicin for a further 4 months, making a total of 6 months therapy. In A5307 the investigators wanted to test a new combination of drugs to see if the investigators could treat TB faster in the future. Studies in animals have suggested that one of the four drugs, isoniazid, only works for a few days and may not be needed after the first two doses of TB treatment to kill the TB bacteria. After that its effects wear off to the point that it may even interfere with the other drugs. The investigators wanted to see if stopping isoniazid early, or using moxifloxacin, a different drug, instead could treat TB faster. This study was the first time that this type of regimen without isoniazid had been tested in humans. If the investigators could show that isoniazid stops working after a few days, the investigators could then try to see if they could possibly make a better tuberculosis treatment in the future.
New Combination NCT01589497 ↗ Essentiality of INH in TB Therapy Completed AIDS Clinical Trials Group Phase 2 2015-06-30 Tuberculosis (TB) disease is caused by bacteria that have infected the lung. TB bacteria are very small living agents that are spread by coughing and can be killed by taking TB drugs. To kill these TB bacteria TB patients have to take a combination of four drugs for 2 months and then two drugs for a further 4 months. During the first 2 months patients take rifampicin, isoniazid, ethambutol, and pyrazinamide. After that patients take only isoniazid and rifampicin for a further 4 months, making a total of 6 months therapy. In A5307 the investigators wanted to test a new combination of drugs to see if the investigators could treat TB faster in the future. Studies in animals have suggested that one of the four drugs, isoniazid, only works for a few days and may not be needed after the first two doses of TB treatment to kill the TB bacteria. After that its effects wear off to the point that it may even interfere with the other drugs. The investigators wanted to see if stopping isoniazid early, or using moxifloxacin, a different drug, instead could treat TB faster. This study was the first time that this type of regimen without isoniazid had been tested in humans. If the investigators could show that isoniazid stops working after a few days, the investigators could then try to see if they could possibly make a better tuberculosis treatment in the future.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for Ethambutol Hydrochloride

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00000641 ↗ A Phase II/III Trial of Rifampin, Ciprofloxacin, Clofazimine, Ethambutol, and Amikacin in the Treatment of Disseminated Mycobacterium Avium Infection in HIV-Infected Individuals. Completed National Institute of Allergy and Infectious Diseases (NIAID) Phase 2 1969-12-31 To compare the effectiveness and toxicity of two combination drug treatment programs for the treatment of disseminated Mycobacterium avium infection in HIV seropositive patients. [Per 03/06/92 amendment: to evaluate the efficacy of azithromycin when given in conjunction with either ethambutol or clofazimine as maintenance therapy.] Disseminated M. avium infection is the most common systemic bacterial infection complicating AIDS in the United States. The prognosis of patients with disseminated M. avium is extremely poor, particularly when it follows other opportunistic infections or is associated with anemia. Test tube studies and clinical data indicate that the best treatment program may include clofazimine, ethambutol, a rifamycin derivative, and ciprofloxacin. Test tube and animal studies indicate that amikacin is a bactericidal (bacteria destroying) drug that works better when used with ciprofloxacin. Its role in treatment programs is a key issue because of toxicity and because it must be administered parenterally (by injection or intravenously).
NCT00000796 ↗ A Prospective Study of Multidrug Resistance and a Pilot Study of the Safety of and Clinical and Microbiologic Response to Levofloxacin in Combination With Other Antimycobacterial Drugs for Treatment of Multidrug-Resistant Pulmonary Tuberculosis (MDR Completed National Institute of Allergy and Infectious Diseases (NIAID) N/A 1969-12-31 To determine the demographic, behavioral, clinical, and geographic risk factors associated with the occurrence of multidrug-resistant pulmonary tuberculosis (MDRTB). To evaluate the clinical and microbiological responses and overall survival of MDRTB patients who are treated with levofloxacin-containing multiple-drug regimens chosen from a hierarchical list. Per 9/28/94 amendment, to assess whether persistent or recurrent positive sputum cultures of patients who show failure or relapse are due to the same strain or reinfection with a new strain. Among TB patients, there has been an increase in progressive disease due to the emergence of antimycobacterial drug-resistant strains of Mycobacterium tuberculosis. Failure to identify patients at high risk for MDRTB increases the hazard for both treatment failure and development of resistance to additional therapeutic agents. Efforts to improve survival in patients with MDRTB will depend on improved methods of assessing the risk of acquisition of MDRTB and identifying drug susceptibility patterns in a timely fashion.
NCT00000950 ↗ Metabolism of Antituberculosis Drugs in HIV-Infected Persons With Tuberculosis Completed National Institute of Allergy and Infectious Diseases (NIAID) N/A 1969-12-31 The purpose of this study is to determine if a relationship exists between the level of antituberculosis drugs (isoniazid, rifampin, ethambutol, and pyrazinamide) in the blood and the outcome of HIV-positive patients with tuberculosis. This study also evaluates how these drugs are absorbed and metabolized in the body.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Ethambutol Hydrochloride

Condition Name

Condition Name for Ethambutol Hydrochloride
Intervention Trials
Tuberculosis 41
HIV Infections 15
Tuberculosis, Pulmonary 13
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Condition MeSH

Condition MeSH for Ethambutol Hydrochloride
Intervention Trials
Tuberculosis 79
Tuberculosis, Pulmonary 36
Mycobacterium Infections 22
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Clinical Trial Locations for Ethambutol Hydrochloride

Trials by Country

Trials by Country for Ethambutol Hydrochloride
Location Trials
United States 268
China 69
South Africa 35
Brazil 19
Uganda 16
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Trials by US State

Trials by US State for Ethambutol Hydrochloride
Location Trials
New York 20
California 20
Texas 18
Maryland 15
Illinois 15
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Clinical Trial Progress for Ethambutol Hydrochloride

Clinical Trial Phase

Clinical Trial Phase for Ethambutol Hydrochloride
Clinical Trial Phase Trials
Phase 4 13
Phase 3 25
Phase 2/Phase 3 6
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Clinical Trial Status

Clinical Trial Status for Ethambutol Hydrochloride
Clinical Trial Phase Trials
Completed 56
Recruiting 22
Unknown status 14
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Clinical Trial Sponsors for Ethambutol Hydrochloride

Sponsor Name

Sponsor Name for Ethambutol Hydrochloride
Sponsor Trials
National Institute of Allergy and Infectious Diseases (NIAID) 19
European and Developing Countries Clinical Trials Partnership (EDCTP) 7
Radboud University 7
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Sponsor Type

Sponsor Type for Ethambutol Hydrochloride
Sponsor Trials
Other 294
Industry 25
NIH 24
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