author(s)
Ikram Ullah, Tooba Iftikhar, Muhammad Ayub Jadoon, Mujaddad Ur Rehman, Qazi Sami ul Haq, Malik Naveed Akhter, Muhammad Zahid Khan, Attia Rehman, Maria Bibi and Kanwal Urooj

abstract
Human T-Cell leukemia Virus-1 also called the adult T-cell lymphoma virus type 1, is a retrovirus of the human T-lymphotropic virus (HTLV) family, responsible for various life threatening diseases such as Adult T-cell Leukemia (ATL) chronic inflammatory CNS disease named as Tropical Spastic Parapariesis/ HTLV-1 Associated Myelopathy (TSP/HAM). About 1–5% of infected persons are thought to develop cancer as a result of the infection with HTLV-I over their lifetimes. It is also observed that majority of the carriers of HTLV-1 remains asymptomatic throughout their whole life. Genetically factors and immunological status of the host determines the causation of associated diseases of HTLV-1. The objective of this review is to provide a good update on epidemiological, genomical, pathophysiologic, therapeutic knowledge about HTLV, and also provide knowledge about diagnostic suspicion and criteria, treatment, transmission and prevention of the disease.