Table 1 30-bp deletion and Xho I polymorphism in NPC biopsies and plasma, and non-malignant nasopharyngeal tissues
| Â | NPC tissues % (n = 42) | Non-malignant nasopharyngeal tissues % (n = 10) | NPC plasma % (n = 35) |
|---|---|---|---|
Analysis | Â | Â | Â |
LMP1 30-bp deletion | Â | Â | Â |
   Frequency detected by PCR | 81.0 (34/42) | 80 (8/10) | 82.9 (29/35) |
With deletion | 55.9 (19/34) | 0 | 24.1 (7/29) |
No deletion | 44.1 (15/34) | 100 (8/8) | 75.9 (22/29) |
With and without deletion | 0 (0/34) | 0 (0/8) | 17.2 (5/29) |
Xho I polymorphism | Â | Â | Â |
   Frequency detected by PCR | 92.9 (39/42) | 80 (8/10) | 85.7 (30/35) |
Loss of Xho I site | 87.2 (34/39) | 0 | 36.7 (11/30) |
Retention of Xho I site | 12.8 (5/39) | 100 (8/8) | 63.3 (19/30) |
Co-existence of 30-bp deletion and Xho I-loss | 59.4 (19/32) | 0 (0/8) | 25.0 (6/24) |