Why is accelerated hyperfractionated RT still being performed in NRG trials such as HN005?
Didn’t 0129 establish no difference between conventional vs Accelerated RT with the same Cisplatin regimen? Are there still thoughts of benefit with Acc fractionation? In practice do most perform conventional?
Answer from: Radiation Oncologist at Academic Institution
To go back a little bit in history, RTOG 1016 was designed prior to the results of RTOG 0129 were available. In the Bonner trial, most patients were treated with accelerated fractionation + cetuximab, and seemed to have better outcomes than those with conventional fractionation. Therefore, in the ab...
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Radiation Oncologist at Banner MD Anderson Cancer Center Thank you, @Jimmy J. Caudell, for a clear and thou...
Radiation Oncologist at University of Wisconsin School of Medicine and Public Health Totally agree.
Radiation Oncologist at Spectrum Health-Butterworth Campus I also agree. I strongly suspect this is the reaso...
Radiation Oncologist at Gadsden Regional Medical Center RTOG 0129 and GORTEC 99-02 both gave 3 cycles of c...
Answer from: Radiation Oncologist at Community Practice
I agree with all the points made by my colleagues in their posts.
I sparingly use 72 Gy concomitant boost MDACC regimen. I prefer hyperfractionation 1.2 Gy BID (UF style) over 72 Gy concomitant boost because of the results of RTOG 9003. However, it is sometimes difficult for patients to come ...
Answer from: Radiation Oncologist at Community Practice
Much has been written regarding the proof that AFX (and I lump all forms here unless specifically noted) is PROVEN to be no better than SFX in the context of q3wk cisplatin. But I ask for a deeper education from those with the knowledge on how we have excused some facts on the way to categorical sta...
Answer from: Radiation Oncologist at Academic Institution
Not only did 129 show no survival benefit to AFX, but there was a suggestion of greater toxicity. The 5-y rate of feeding tube was 13% vs 6% (p=.08). Subsequently, 522 used AFX in both arms, and a recent update presented at the combo HN meeting showed long term results of feeding tube rates > 10%...
Answer from: Radiation Oncologist at Academic Institution
From a clinical trial standpoint, there is strong logic to using two cycles of bolus cisplatin in both arms. In this way, the only difference between the 70 Gy and 60 Gy arms is the total dose. The chemotherapy is literally identical, and thus the only difference—if any—would be related ...
Thank you, @Jimmy J. Caudell, for a clear and thou...
Totally agree.
I also agree. I strongly suspect this is the reaso...
RTOG 0129 and GORTEC 99-02 both gave 3 cycles of c...