Table 2.

Simplified nucleotide structures of different classes of defective HTLV-1 proviruses

ClassStructureNo. detectedDisease (no. affected)
1δMA----------δSU-δTM-pX3HAM/TSP (2), ATLL (1)
2δMA----------------δTM-pX12HAM/TSP (8), asymptomatic (3),  ATLL (1)
3δMA-δCA-----------------pX2ATLL (1), HAM/TSP (1)