PMID- 7485068 OWN - NLM STAT- MEDLINE DCOM- 19951207 LR - 20190512 IS - 0002-9262 (Print) IS - 0002-9262 (Linking) VI - 142 IP - 11 DP - 1995 Dec 1 TI - Risk factors and cofactors for human T-cell lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) in Jamaica. PG - 1212-20 AB - Human T-cell lymphotropic virus type I (HTLV-I) has been etiologically associated with a neurologic syndrome called HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP) as well as with adult T-cell leukemia/lymphoma. The authors sought to quantify the risk in Jamaica of HAM/TSP associated with HTLV-I infection and cofactors associated with this disease among infected individuals. Between 1988 and 1989, prevalent and incident HAM/TSP patients and controls with other neurologic diseases were enrolled in a retrospective study. A second control group was composed of HTLV-I-seropositive, asymptomatic carriers in Jamaica, ascertained in a separate study conducted in 1988. Although HTLV-I seropositivity was not a component of the case definition for HAM/TSP, all 43 HAM/TSP patients were HTLV-I seropositive compared with two (4.0%) of the controls with other neurologic diseases. Given HTLV-I seropositivity, one cofactor associated with the risk of HAM/TSP was young age at initial heterosexual confidence interval 1.29-12.46 for individuals aged < or = 15; odds ratio = 4.26, 95% confidence interval 1.41-12.90 for individuals aged 16-17 years at initial intercourse). Among individuals who reported this early age at initial sexual intercourse, an increased risk of HAM/TSP was associated with having reported more than five lifetime sexual partners (odds ratio = 2.88, 95% confidence interval 0.90-8.70). Neither an early age at initial sexual intercourse or the number of lifetime sexual partners was a risk factor for adult T-cell leukemia/lymphoma. These data support the hypothesis that HAM/TSP is associated with sexually acquired HTLV-I infection, whereas adult T-cell leukemia/lymphoma is not. FAU - Kramer, A AU - Kramer A AD - Viral Epidemiology Branch, National Cancer Institute, National Institutes of Health, Rockville, MD, USA. FAU - Maloney, E M AU - Maloney EM FAU - Morgan, O S AU - Morgan OS FAU - Rodgers-Johnson, P AU - Rodgers-Johnson P FAU - Manns, A AU - Manns A FAU - Murphy, E L AU - Murphy EL FAU - Larsen, S AU - Larsen S FAU - Cranston, B AU - Cranston B FAU - Murphy, J AU - Murphy J FAU - Benichou, J AU - Benichou J AU - et al. LA - eng GR - N01-CP-31006/CP/NCI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Epidemiol JT - American journal of epidemiology JID - 7910653 SB - IM MH - Adolescent MH - Adult MH - Age Factors MH - Aged MH - Female MH - Humans MH - Jamaica/epidemiology MH - Leukemia-Lymphoma, Adult T-Cell/epidemiology MH - Logistic Models MH - Male MH - Middle Aged MH - Paraparesis, Tropical Spastic/*epidemiology/immunology/transmission MH - Retrospective Studies MH - Risk Factors MH - Serologic Tests MH - Sexual Behavior MH - Sexually Transmitted Diseases, Viral/*epidemiology/immunology EDAT- 1995/12/01 00:00 MHDA- 1995/12/01 00:01 CRDT- 1995/12/01 00:00 PHST- 1995/12/01 00:00 [pubmed] PHST- 1995/12/01 00:01 [medline] PHST- 1995/12/01 00:00 [entrez] AID - 10.1093/oxfordjournals.aje.a117580 [doi] PST - ppublish SO - Am J Epidemiol. 1995 Dec 1;142(11):1212-20. doi: 10.1093/oxfordjournals.aje.a117580.