Plancoulaine Sabine, Gessain Antoine, van Beveren Monique, Tortevoye Patricia, Abel Laurent
Laboratoire de Génétique Humaine des Maladies Infectieuses, Université René Descartes-INSERM U 550, Faculté de Médecine Necker, Paris, France.
J Infect Dis. 2003 Jun 15;187(12):1944-50. doi: 10.1086/375345. Epub 2003 May 29.
Infection by human herpesvirus 8 (HHV-8), as measured by the presence of specific antibodies, was shown in countries in which HHV-8 infection is endemic to exhibit familial aggregation and a peculiar variation with age (rapid increase until puberty followed by a plateau in young adults). To investigate whether host genetic factors could explain these findings, a segregation analysis was performed of 81 families of African origin (1623 subjects; HHV-8 seroprevalence, 11.9%) living in a village in French Guiana in which HHV-8 infection is endemic. Results provide evidence for a recessive gene controlling susceptibility or resistance to HHV-8 infection. This gene is predicted to have a major effect during childhood, with almost all homozygous predisposed subjects ( approximately 6% of the population) being infected by age 15. For nonpredisposed subjects, HHV-8 infection in childhood strongly depends on virus exposure (through an HHV-8-infected mother), whereas the risk of infection appears to be low in young adults, with no evidence for heterosexual transmission.
