100% of Complete Response (CR) and Survival (FFP, OS) in Newly Diagnosed Patients with Advanced- and Intermediate-Stage Hodgkin’s Lymphoma (HL) Treated with Six Cycles of Dose-Dense, Dose-Intense (DD-DI) ABVD without Radiotherapy (RT).
Authors: Russo Filippo , Corazzelli Gaetano , Frigeri Ferdinando , LaStoria Secondo , Pinto Antonio 
Published: October 2019

Abstract
Despite the mature results of the new intensive treatments, ABVD is still considered the standard therapy of the HL. Here we report the 2-year results of a phase 2 study which explore the possibility to ameliorate the performance of this (g)old schedule. Primary End-Points: CR and early cardio-toxicity. Secondary End-Points: survival (FFP,OS) and late cardio-toxicity. 23/25 CR (CI 90%) to validate the study (80% standard vs 90% DD-DI ABVD, CI +/− 10% one tail test, 5% sig stat level). Modifications of the standard (st) ABVD and strategy concepts are summarized as follow:
Each patient received a total of 6 cycles without RT Adryamicin (ADM) was escalated from 50 to 70 mg/m2 in the cycles 1,2,3,4. The cumulative dose of ADM was 380 mg/m2. The intercycle period was shortened from 28 to 21 days for all 6 cycles; the 4 drugs were delivered at day 1 and 11 of each cycle G-CSF was given from d4 to d8, and from d14 to d18 of each cycle The therapy program was driven by dynamic indicators such as interim-PET and CT fusion images. Normalisation of PET images at the end of 2nd cycles was indicator of early CR, while the persistence of PET+ lesion(s) at the end of the 4th cycle was indicator of failure and consequently the treatment was shift to a high-dose CT/CD34+ rescue program. RT was eliminated. At the end of 6th cycle, PET- residual masses were monitored by PET/TC fusion images. An historical group of 94 HL pts treated with 6–8 cycles of st-ABVD +/− RT was used to compare response, survival and toxicity data.
Compared to st-ABVD the theoretical relative dose-intensity (RDI) values of drugs were 1.86 for ADM, 1.33 for DTIC, Bleomycin and Vinblastine, and 1.46 for the entire schedule. Administered RDIs of the schedule (delivered cycles = 184) ranged between 1.10 to 1.55 (median value 1.39).
Results: from June 2004 to August 2006 thirty-nine pts were enrolled (tab1). As the 8th August 2006 thirty-five out of 39 pts have performed the interim-PET-TC fusion images and thirty-two completed the treatment: 100% of valuable pts obtained the early CR (35/35) and CR (32/32). All pts are alive and free of disease (tab2 and fig.1).
Cardiac functions were monitored by ECG, Ecography, MUGA scan, pro-BNP, and troponin T. Toxicity was mild and similar to standard ABVD.
Dose-dense and dose-intense ABVD is feasible, well tolerated and highly active in newly diagnosed patients with advanced/intermediated Hodgkin’s lymphoma: six cycles without RT seem superior to 6–8 cycles of ABVD +/− RT (fig 1) and may be a promising program for optimal long-term results.
tab1 presentation features Features total 39 100% Early unfavourable 9 23% Advanced 30 77% Age > 45 –yr 4 10% Bulky 19 44% Stage IV 13 33% B symptoms 25 64% Extranodal 9 23% VES > 50 mm 20 51% LDH Ratio > 1 15 38% IPS ≥ 3 10 26% N. Sites>3 28 72% Male 13 33% tab.2 Response and Survival N. of patients percent *n°. of valuable pts as 8 August 2006 Early CR 35/35* 100% CR 32/32* 100% FFP-2yr 32/32* 100% OS-2yr 32/32* 100%
Freedom From Progression Freedom From Progression