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Diagnose og behandling af Leishmania-infektioner

Værtsrespons på infektion og behandling ved Leishmania-infektion hos mennesker

Patients admitted on this protocol must have an active Leishmania infection. The major objectives of the protocol are to diagnose and classify the Leishmania infection and to provide species-based therapy to study the natural history of the treated infection and further understand host and species characteristics that lead to resistant or relapsing disease. As part of the standard evaluation of these patients, biopsies to obtain parasite and host tissue will be obtained. The host response before and after therapy will be assessed to address broader questions related to diagnosis, disease pathogenesis, and response to therapy. Careful observations of the patients clinical and immunologic responses to therapy will be made, as well as long-term follow-up of these changes. It is anticipated that the patients will receive optimal clinical care for their infections and that the specimens collected from them will prove to be valuable reagents for the laboratory studies of the host responses unique to leishmanial infections.

Based on the nature of the disease and the recommended treatment, subjects will receive clinically appropriate treatment. Patients will undergo a limited physical examination to assess general condition, respiratory status, and skin condition. Following treatment patients are seen at 3 months and 12 months. Blood, lesion swabs, mucosal swabs, microbiopsies and/or skin biopsies will be collected for research evaluations. There will also be a mandatory check in (photos, telephone or telehealth visit) at 6 months. All of these post treatment timepoints are used to follow the course of the disease and management. Additional visits may be scheduled for clinically indicated procedures as guided by clinical status and need for evaluation. Samples collected from clinical evaluations may also be studied for research purposes and the results will be collected as part of this protocol. Participants enrolled can be assessed using an approved virtual platform. Study visits can be performed remotely if outside physicians are able to submit study specimens (blood samples, lesion and mucosal swabs).

The final study visit will typically be at 1 year following successful treatment. Blood will be collected, and swabs/microbiopsies may be collected for research evaluations at this visit. Follow up visits beyond the 1-year post-treatment point may occur on an annual basis if clinically necessary, as deemed by the investigator.

Studieoversigt

Status

Rekruttering

Betingelser

Detaljeret beskrivelse

Patients admitted on this protocol will have, or be suspected of having, a Leishmania infection. The major objectives of the protocol are to diagnose and classify the Leishmania infection and to provide species-based therapy to study the natural history of the treated infection and further understand host and species characteristics that lead to resistant or relapsing disease. As part of the standard evaluation of these patients, biopsies to obtain parasite and host tissue will be obtained. The host response before and after therapy will be assessed to address broader questions related to diagnosis, disease pathogenesis, and response to therapy. Careful observations of the patients clinical and immunologic responses to therapy will be made, as well as long-term follow-up of these changes. It is anticipated that the patients will receive optimal clinical care for their infections and that the specimens collected from them will prove to be valuable reagents for the laboratory studies of the host responses unique to leishmanial infections.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

400

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Maryland
      • Bethesda, Maryland, Forenede Stater, 20892
        • Rekruttering
        • National Institutes of Health Clinical Center
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

3 år til 100 år (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

This population of patients are referred from their physicians both regionally and nationally.

Beskrivelse

  • INCLUSION CRITERIA:
  • Individuals aged 3 to 100 years.
  • Diagnosis of leishmaniasis:

A: Biopsy proven

OR

B: Likely diagnosis of leishmaniasis based on :

Epidemiologic exposure, clinical manifestations, and time course

  • Willingness to allow samples to be stored for future research.
  • Ability to provide informed consent.

EXCLUSION CRITERIA:

Any condition that, in the judgment of the investigator, may put the participant at undue risk or make them unsuitable for participation in the study.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Kohorter og interventioner

Gruppe / kohorte
1

This population of patients are referred from their physicians both regionally and nationally.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Obtain a basic immune workup and biobank PBMCs, plasma, and cultured leishmania isolates
Tidsramme: 1 year

Obtain a basic immune workup and host genetic information (WGS)

1 year
Obtain organism genomic data at the initial time of NIH presentation and any further relapses
Tidsramme: 1 year

Obtain organism genomic data at the initial time of NIH presentation and any further relapses

1 year
Obtain phenotypic and clinical information to document refractory and relapsing clinical courses.
Tidsramme: 1 year

Obtain phenotypic and clinical information to document refractory and relapsing clinical courses.

1 year

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Determine if sequential quantitative qPCR for leishmania spp. from lesion(s) obtained by microbiopsy (nodular disease) or swabbing (ulcerative disease) correlates with healing
Tidsramme: 1 year

Examine biomarkers as predictors of clinical course

1 year
Assess the safety profile of varying treatment regimens
Tidsramme: 1 year

Assess the safety profile of varying treatment regimens

1 year
Assess the efficacy of varying treatment regimens in different species
Tidsramme: 1 year

Assess the efficacy of varying treatment regimens in different species

1 year

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Elise M O'Connell, M.D., National Institute of Allergy and Infectious Diseases (NIAID)

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

30. november 2001

Datoer for studieregistrering

Først indsendt

23. juni 2006

Først indsendt, der opfyldte QC-kriterier

23. juni 2006

Først opslået (Anslået)

26. juni 2006

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

29. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

28. oktober 2026

Sidst verificeret

28. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 010238
  • 01-I-0238

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

No.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .