Marianne,
You might want to review at the current RTOG-0129 and ASTRO-TAX324 findings:

http://www.rtog.org/press/2010June07.html

http://www.asco.org/ASCOv2/Meetings..._view&confID=74&abstractID=40813

ASTRO findings for Overall & Progression Free Survival were:
OS* HPV+ N=56 HPV- N=55
1-yr 93% (82-97) 69% (54-79)
2-yr 89% (78-95) 48% (34-61)
3-yr 87% (75-94) 41% (28-53)
5-yr 82% (69-90) 35% (23-48)
PFS*
1-yr 85% (73-92) 52% (38-64)
2-yr 83% (70-91) 35% (23-48)
3-yr 81% (68-90) 33% (21-46)
5-yr 78% (64-87) 28% (17-40)