A Phase 1/2 interventional study of Nitazoxanide in HIV Infections and Cryptosporidiosis, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Completed at 2 sites in 2 countries. Open to participants aged 3 Months to 19 Years. Per ClinicalTrials.gov, last updated 2021-11-01.
Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Phase 1/2, Interventional, and Treatment
Cryptosporidium parvum (C. parvum) is a parasite that can cause chronic diarrhea and is a significant problem for HIV infected children in developing countries. C. parvum infection can be treated with the drug nitazoxanide (NTZ). However, NTZ has not been tested in HIV infected children. The purpose of this study is to test the safety of NTZ in HIV infected children who have chronic diarrhea caused by C. parvum.
Study hypothesis: Twice-daily NTZ is safe and well tolerated in HIV infected infants, children, and adolescents with chronic diarrhea caused by C. parvum infection.
C. parvum is a significant opportunistic infection in much of the developing world, where children may not have access to highly active antiretroviral therapy. There is currently no established therapy for chronic cryptosporidiosis in HIV infected children. The FDA has approved NTZ for the treatment of cryptosporidiosis diarrhea; however, there are no data on the safety and effectiveness of NTZ in HIV infected children. The purpose of this study is to evaluate the safety of different doses of NTZ in HIV infected children with chronic diarrhea caused by C. parvum.
In Step 1, participants will receive one of four different doses of NTZ. Participants will take NTZ twice a day for 56 days in either a liquid or pill form. All participants will be closely monitored for drug toxicity. There will be seven study visits; they will occur at study entry, Weeks 1, 2, 4, 6, and 8, and Day 70. Study visits will include a physical exam and blood, urine, and stool collection. Pharmacokinetic (PK) sampling will be performed during four of the study visits. PK sampling requires the participants to take their morning NTZ doses while in the clinic; participants will undergo additional blood collection either before or after taking NTZ. At the end of the 56-day study period, participants who are experiencing a positive clinical benefit from NTZ and who have had no harmful side effects may choose to continue taking NTZ for an additional 24 weeks and enter Step 2. Participants who do not continue taking NTZ after Day 56 will be followed for 2 additional weeks.
30 studies on the registry are indexed under Cryptosporidiosis; 7 are open to participants now.
This study's enrollment of 6 is below the median of 50 across 16 interventional studies indexed under Cryptosporidiosis.
Browse Cryptosporidiosis studies →National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,401 studies on the registry; 179 are open to participants now.
Of its 396 completed or terminated interventional studies of FDA-regulated products, 294 (74%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria for Step 1:
Safety as evaluated by Grade 4 or new Grade 3 adverse reactions before Day 56 that cannot be directly attributed to another cause and are considered treatment limiting
area under the curve (AUC) of orally administered NTZ
Safety as evaluated by Grade 4 or new Grade 3 adverse reactions during longer-term follow-up (six months after Day 56 under Step I) that cannot be directly attributed to another cause and are considered treatment limiting
This study is completed, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
National Institute of Allergy and Infectious Diseases (NIAID)