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CompletedNCT00340821Updated Jul 2, 2017

A Study of Familial and Genetic Aspects of Adult T-Cell: Leukemia/Lymphoma , Tropical Spastic Paraparesis, and Infective Dermatitis

An observational study in HTLV-I, sponsored by National Cancer Institute (NCI). Completed at 1 site in Jamaica. Open to participants aged 2 Years and older. Per ClinicalTrials.gov, last updated 2017-07-02.

Sponsored by National Cancer Institute (NCI) · Observational

Study type
Observational
Enrollment
1,800
Ages
2 Years and older
Sex
All
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Study summary

Doctors of the University of West Indies, the Caribbean Epidemiology Center (CAREC) and the National Cancer Institute have been studying the epidemiology of HTLV-I and its role in the etiology and pathogenesis of adult T-cell leukemia/lymphoma (ALT), and aggressive T-cell lymphoma. The purpose of the current study is to evaluate familial and genetic aspects of ATL and its relationship to two other HTLV-I related conditions, HTLV-I associated myelopathy also known as tropical spastic paraparesis (HAM/TSP), and infective dermatitis. Enrollment of infective dermatitis cases was recently added and the disease entity is thought to be a harbinger for later development of either ATL or HAM/TSP. The purpose of this study is to interview patients with these conditions and perform laboratory studies (specifically, HLA and other viral or genetic studies) to better understand these diseases and their relationship to the HTLV-1 virus and the family history and genetic factors that may be involved as well.

Read the detailed description

Doctors of the University of West Indies, the Caribbean Epidemiology Center (CAREC) and the National Cancer Institute have been studying the epidemiology of HTLV-I and its role in the etiology and pathogenesis of adult T-cell leukemia/lymphoma (ALT), and aggressive T-cell lymphoma. The purpose of the current study is to evaluate familial and genetic aspects of ATL and its relationship to two other HTLV-I related conditions, HTLV-I associated myelopathy also known as tropical spastic paraparesis (HAM/TSP), and infective dermatitis. Enrollment of infective dermatitis cases was recently added and the disease entity is thought to be a harbinger for later development of either ATL or HAM/TSP. The purpose of this study is to interview patients with these conditions and perform laboratory studies (specifically, HLA and other viral or genetic studies) to better understand these diseases and their relationship to the HTLV-1 virus and the family history and genetic factors that may be involved as well.

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Conditions studied

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In context

Paraparesis, Tropical Spastic

21 studies on the registry are indexed under Paraparesis, Tropical Spastic; 2 are open to participants now.

Browse Paraparesis, Tropical Spastic studies →

Lead sponsor

National Cancer Institute (NCI) is the lead sponsor of 3,506 studies on the registry; 334 are open to participants now.

Of its 402 completed or terminated interventional studies of FDA-regulated products, 365 (91%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
2 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

All cases of ATL and TSP which satisfy the case definitions above. Cases will be selected regardless of HTLV-1 sero-status.

Exclusion criteria

EXCLUSION CRITERIA:

Cases who have none of the first three priority family members available i.e. parents, offspring and siblings, will be excluded from this study however summary data will be maintained.

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Study design

Enrollment
1,800 participants (estimated)
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Study locations

1 site
  • University of the West Indies
    Kingston, Jamaica
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References and documents

Publications

  • Rodgers-Johnson P, Gajdusek DC, Morgan OS, Zaninovic V, Sarin PS, Graham DS. HTLV-I and HTLV-III antibodies and tropical spastic paraparesis. Lancet. 1985 Nov 30;2(8466):1247-8. doi: 10.1016/s0140-6736(85)90778-0. No abstract available. PubMed 2866324 ↗
  • Murphy EL, Hanchard B, Figueroa JP, Gibbs WN, Lofters WS, Campbell M, Goedert JJ, Blattner WA. Modelling the risk of adult T-cell leukemia/lymphoma in persons infected with human T-lymphotropic virus type I. Int J Cancer. 1989 Feb 15;43(2):250-3. doi: 10.1002/ijc.2910430214. PubMed 2917802 ↗
  • Kajiyama W, Kashiwagi S, Ikematsu H, Hayashi J, Nomura H, Okochi K. Intrafamilial transmission of adult T cell leukemia virus. J Infect Dis. 1986 Nov;154(5):851-7. doi: 10.1093/infdis/154.5.851. PubMed 2877031 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 2, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00340821
Lead sponsor
National Cancer Institute (NCI)
First posted
Jun 21, 2006
Start date
May 17, 1993
Completion
Mar 1, 2011
Last update
Jul 2, 2017
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2011. You cannot join it, but the record below documents what was studied.

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