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A parasitic disorder caused by protozoa of the Trypanosoma brucei species. It is transmitted by flies and is endemic in various regions of Sub-Saharan Africa. Signs and symptoms include fever, joint pain, headache, and significant swelling of the lymph nodes. If left untreated, the parasitic infection causes anemia, heart, kidney, and endocrine failure, and neurologic damage. Subsequently patients develop confusion, disruption of the sleep cycle, and mental deterioration. The infection may lead to coma and death.
Features include very common findings: Nervous system problems (abnormality of the nervous system), Excessive daytime somnolence, Sleep disturbance, and Sleep-wake cycle disturbance and others; and common findings: Lack of interest or motivation (apathy), Pruritus, Muscle weakness, and Hepatosplenomegaly and others. 85 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 25 | Nervous system problems (abnormality of the nervous system), Excessive daytime somnolence, Lack of interest or motivation (apathy) |
Biomarker and diagnostic research for human African trypanosomiasis has been reported in the published literature.
1 FDA-approved treatment is available for human African trypanosomiasis, including FEXINIDAZOLE (FEXINIDAZOLE, approved 2021). An additional 3 compounds hold orphan drug designation.
Brand Name | Generic Name | Mechanism | Approved | Market Status |
|---|---|---|---|---|
Phenotype severity distribution: 6 very common features, 18 common features.
Estimated prevalence: Unknown (Unknown prevalence).
1 clinical trial registered. Interventions under study include drug therapy. Pipeline includes 1 PHASE3. Research is primarily sponsored by academic and government institutions.
181 publications have been identified in PubMed for human African trypanosomiasis. Research spans Basic Science / Preclinical (26%), Gene Therapy / Novel Therapeutics (21%), and Epidemiology / Natural History (20%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 47 |
Data assembled from 6 of 12 sources · Last updated Sep 18, 2026, 6:51 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Digestive system | 7 | Hepatosplenomegaly, Enlarged spleen (splenomegaly), Enlarged liver (hepatomegaly) |
Eyes | 5 | Abnormal rapid eye movement sleep, Keratitis, Conjunctivitis |
Heart and blood vessels | 5 | Third degree atrioventricular block, Second degree atrioventricular block, Congestive heart failure |
Hormones | 4 | Infertility, Abnormality of the endocrine system, Abnormality of circulating cortisol level |
Skin | 3 | Pruritus, Alopecia, Erythematous macule |
Muscles | 2 | Muscle weakness, Fasciculations |
Blood and immune system | 2 | Enlarged spleen (splenomegaly), Disseminated intravascular coagulation |
Growth and development | 2 | Weight loss, Abnormal growth hormone level |
Kidneys and urinary system | 2 | Urinary incontinence, Reduced kidney function (renal insufficiency) |
Metabolism | 1 | Periodic fever |
Lab test results | 1 | Abnormal heart rhythm on EKG (abnormal ekg) |
Bones and joints | 1 | Arthralgia |
FEXINIDAZOLE |
FEXINIDAZOLE |
— |
2021 |
Available |
The following drugs have received orphan drug designation from the FDA for human African trypanosomiasis. Orphan designation reflects regulatory interest and does not indicate approval for treatment.
Brand Name | Generic Name | Sponsor | Designated | Exclusivity End | Designation Status |
|---|---|---|---|---|---|
suramin | suramin | PaxMedica, Inc. | 2021 | — | Designated |
melarsoprol-hydroxypropylbetadex | melarsoprol-hydroxypropylbetadex | Peter Kennedy, CBE, MD, PhD, DSc, FRCP FMedSci, | 2013 | — | Designated |
Pafuramidine maleate | Pafuramidine maleate | Immtech Pharmaceuticals, Inc. | 2007 | — | Designated |
Gene therapy approaches for human African trypanosomiasis have been reported in the published literature.
1 trial found
New treatment approaches | 38 | 21% |
Disease patterns and progression | 37 | 20% |
Research summaries | 26 | 14% |
Testing and diagnosis research | 18 | 10% |
Clinical study results | 10 | 6% |
Patient case studies | 3 | 2% |
Other research | 2 | 1% |
Muhanguzi D (2026). [PMID: 41491522](https://pubmed.ncbi.nlm.nih.gov/41491522/). *BMC Vet Res*. [Basic Science / Preclinical]
Njitchouang GR (2026). [PMID: 42047586](https://pubmed.ncbi.nlm.nih.gov/42047586/). *Trans R Soc Trop Med Hyg*. [Epidemiology / Natural History]
Saldanha I (2026). [PMID: 41871078](https://pubmed.ncbi.nlm.nih.gov/41871078/). *PLoS Negl Trop Dis*. [Basic Science / Preclinical]
Souza SO (2026). [PMID: 42177069](https://pubmed.ncbi.nlm.nih.gov/42177069/). *Adv Protein Chem Struct Biol*. [Review / Meta-Analysis]
Makori P (2026). [PMID: 41908408](https://pubmed.ncbi.nlm.nih.gov/41908408/). *ACS Omega*. [Basic Science / Preclinical]
Lucinda PPD (2026). [PMID: 41833460](https://pubmed.ncbi.nlm.nih.gov/41833460/). *Trends Parasitol*. [Review / Meta-Analysis]
Silva LR (2026). [PMID: 42177070](https://pubmed.ncbi.nlm.nih.gov/42177070/). *Adv Protein Chem Struct Biol*. [Review / Meta-Analysis]
Malfara MF (2026). [PMID: 42094465](https://pubmed.ncbi.nlm.nih.gov/42094465/). *bioRxiv*. [Basic Science / Preclinical]
Boum Y (2026). [PMID: 41545059](https://pubmed.ncbi.nlm.nih.gov/41545059/). *BMJ*. [Other]
Boundenga L (2026). [PMID: 42027622](https://pubmed.ncbi.nlm.nih.gov/42027622/). *Curr Res Parasitol Vector Borne Dis*. [Epidemiology / Natural History]