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Annals of Oncology 25: 1622–1628, 2014 doi:10.1093/annonc/mdu189 Published online 14 May 2014 ABVD (8 cycles) versus BEACOPP (4 escalated cycles ≥4 baseline): final results in stage III–IV low-risk Hodgkin lymphoma (IPS 0–2) of the LYSA H34 randomized trial† N. Mounier1*, P. Brice2, S. Bologna3, J. Briere2, I. Gaillard4, M. Heczko5, J. Gabarre6, O. Casasnovas7, J. Jaubert8, P. Colin9, A. Delmer10, A. Devidas11, E. Bachy12, E. Nicolas-Virelizier13, A. Aoudjhane14, C. Humbrecht15, M. Andre16 & P. Carde17, on behalf of the Lymphoma Study Association (LYSA) 1 Department of Onco-Hematology, Archet Hospital, Nice; 2Department of Hematology, Saint-Louis Hospital, Paris; 3Department of Hematology, Nancy Hospital; Department of Hematology, Henri Mondor Hospital, Creteil; 5Department of Hematology, Besancon Hospital; 6Department of Hematology, la Pitié-Salpétrière Hospital, Paris; 7Department of Hematology, CHU de Dijon Hospital, Dijon; 8Department of Hematology, St Etienne Hospital, St Etienne; 9Department of Hematology, Courlancy Cancer Institute, Reims; 10Department of Hematology, Reims Hospital, Reims; 11Department of Hematology, Corbeil Hospital, Corbeil Essonnes; 12Department of Hematology, Lyon Sud Hospital, Pierre Benite; 13Department of Hematology, Leon Berard Cancer Center, Lyon; 14Department of Hematology, St Antoine Hospital, Paris; 15 Department of Hematology, Colmar Hospital, Colmar, France; 16Department of Hematology, Mont Godine Hospital, Yvoire, Belgium; 17Department of Hematology, Gustave Roussy Institute, Villejuif, France 4 Received 5 February 2014; revised 19 March 2014; accepted 5 May 2014 Background: Treatment with escalated BEACOPP achieved a superior time to treatment failure over ABVD in patients with disseminated Hodgkin lymphoma. However, recent clinical trials have failed to confirm BEACOPP overall survival (OS) superiority over ABVD. In addition, the gain in low-risk patients is still a matter of debate. Patients and methods: We randomly compared ABVD (8 cycles) with BEACOPP (escalated 4 cycles ≥baseline 4 cycles) in low-risk patients with an International Prognostic Score (IPS) of 0–2. The primary end point was event-free survival (EFS). This parallel group, open-label phase 3 trial was registered under #RECF0219 at French National Cancer Institute. Results: One hundred and fifty patients were randomized in this trial (ABVD 80, BEACOPP 70): 28 years was the median age, 50% were male and IPS was 0–1 for 64%. Complete remission rate was 85% for ABVD and 90% for BEACOPP. Progression or relapses were more frequent in the ABVD patients than in the BEACOPP patients (17 versus 5 patients). With a median follow-up period of 5.5 years, seven patients died: six in the ABVD arm and one in the BEACOPP arm (HL 3 and 0, 2nd cancer 2 and 1, accident 1 and 0). The EFS at 5 years was estimated at 62% for ABVD versus 77%, for BEACOPP [hazards ratio (HR) = 0.6, P = 0.07]. The progression-free survival (PFS) at 5 years was 75% versus 93% (HR = 0.3, P = 0.007). The OS at 5 years was 92% versus 99% (HR = 0.18, P = 0.06). Conclusion: Fewer progressions/relapses were observed with BEACOPP, demonstrating the high efficacy of the more intensive regimen, even in low-risk patients. However, additional considerations, balancing treatment-related toxicity and late morbidity due to salvage may help with decision-making with regard to treatment with ABVD or BEACOPP. Key words: Hodgkin lymphoma, intensive chemotherapy, phase 3 trial, prognostic factors, secondary malignancy *Correspondence to: Prof. Nicolas Mounier, Onco-Hématology Department, Archet Hospital, 151 route de Saint Antoine Ginestière, 06200 Nice, France. Tel: +33-4-92-0358-41; E-mail: [email protected] † This study was presented, in part, at the 12th International Conference on Malignant Lymphoma, 19–22 June 2013, in Lugano, Switzerland, and at the 9th International Symposium on Hodgkin Lymphoma, 12–15 October 2013, in Cologne, Germany. © The Author 2014. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved. For permissions, please email: [email protected]. original articles Annals of Oncology introduction A majority of patients with Hodgkin lymphoma (HL) are now being cured, even in the advanced stages. However, balancing the risks and benefits, treatment strategies are still a matter of debate. The standard approach to treatment uses doxorubicin, bleomycin, vinblastine and dacarbazine (ABVD) as first-line therapy [1]. For the 25% of patients who relapse after initial treatment, second-line treatment with high-dose chemotherapy is followed by autologous stem cell transplantation. The alternative approach aims to cure as many patients as possible with aggressive first-line chemotherapy using increased doses of bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine and prednisone (escalated BEACOPP) [2–4]. Accumulated data have shown better progression-free survival (PFS) and overall survival (OS) rates, but this alternative approach exposes patients to substantial acute chemotherapy-related toxicity [5, 6]. Clinical prognostic indices may help to identify patients at a low risk of treatment failure to be considered for standard treatment or to identify patients at a higher risk to be considered for more intensive therapy or a combination with new drugs. For more than 15 years, the International Prognostic Score (IPS), which incorporates seven clinical parameters, has been the most widely accepted risk stratification model [7]. However, for patients treated in the ABVD era, IPS predicts for a much narrower range of outcomes than has been previously noted [8]. More specifically, the difference in PFS in patients with low-risk and high-risk scores has diminished to 15%. The intergroup trial 20012, led by EORTC, grouping LYSA (formerly GELA), ALLG, NCRI LYG, GELCAB, NCIC and NLG was a phase 3 trial to assess whether treatment with four cycles of escalated BEACOPP (bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine and prednisone) followed by four cycles of BEACOPP-baseline improved event-free survival (EFS) when compared with the eight cycles of the standard ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine) regimen in patients with measurable stage III or IV HL, with a high-risk IPS (≥3)[9]. We present herein the results of a trial conducted in parallel to the intergroup 20012 trial in LYSA centers only, which aimed to assess the EFS gain after stratification in low-risk patients with an IPS ranging from 0 to 2 (registered under #RECF0219 at French National Cancer Institute). methods patients Patients were included in the study if they had histologically documented HL (except lymphocyte predominant nodular type), were treatment naïve, were 16–60 years old, were a clinical stage III or IV, had at least one bi-dimensionally measurable target lesion (even if extranodal only), had a WHO performance status of 0–2, had an IPS of 0–2 and had an absence of other malignancies (except basal cell skin and in situ uterine cervix carcinomas). Patients were excluded from the study if they had an absence of measurable disease, were of childbearing-potential without the use of effective contraception, were pregnant or lactating, had an active infection, had severe cardiopulmonary, neurological or metabolic disease that interfered with normal life, or had inadequate liver (bilirubin ≤2.5×normal) or renal (creatinine ≤150 μmol/l or ≤2.0 mg/dl) function (unless the inadequate function was due to HL). Volume 25 | No. 8 | August 2014 study design and treatment This was a parallel group, open-label randomized trial. We used computerassisted permuted-block randomization (block size of four, allocation ratio 1:1) to assign treatment. Randomization was stratified by participating center. A statistician located centrally at the GELA research clinic supervised the randomization procedure. The doses and schedules of the chemotherapy combinations are listed in supplementary Table S1 available at Annals of Oncology online. ABVD was administered for eight cycles, depending on the response assessed at the end of cycles 4 (C4), 6 (C6) and 8 (C8), using clinical and computed tomography (CT) criteria. Positron emission tomography (PET) scans were not allowed. BEACOPP was administered for eight cycles (escalated for four cycles, then followed by baseline administration for four cycles). The checkpoints for pursuing the treatment as planned were: achievement at the end of the fourth cycle (i.e. the 22nd or 28th day, depending on the arm) of at least a partial response (regression of more than 50%, i.e. PR >50%) and normalization of bone marrow biopsy in the case of initial involvement; achievement at the end of C6 of at least a PR >75%. Patients in CR after four or six cycles have to complete the scheduled eight ABVD or BEACOPP cycles. Any protocol therapy discontinuation while the patient was in PR, progression, or unknown status or was administered a new treatment was defined and recorded as an event (treatment failure). No radiotherapy could be given as part of the protocol treatment unless it was considered as an event. The prophylactic administration of G-CSF and trimethoprim/sulfamethoxazole was mandatory in the BEACOPP arm. The evaluation of response was carried out according to the Response Evaluation Criteria for HL [10]. Local or national ethics committees approved the study protocol, according to the laws of every country. The study was done in accordance with the Declaration of Helsinki. Patients provided written informed consent before inclusion. Hematologic and non-hematologic toxicities were graded according to the National Cancer Institute Common Toxicity Criteria (Version 2.0). statistical analysis The EFS was the primary end point, which was defined as the time from randomization to the early discontinuation of the protocol treatment, the absence of complete remission (CR/CRu) after eight cycles or the occurrence of relapse, progression or death. The study was designed for 150 patients to be randomized over 5 years. It was determined that 26 events were required to detect a 15% increase in the 5-year EFS rate from 75% (ABVD) to 90% (BEACOPP), based on a one-sided log-rank test at error rates of α = 0.05 and β = 0.20. Secondary end points were defined as CR/CRu, PFS, OS and the occurrence of second malignancies. We calculated hazard ratios (HR) by the Cox proportional-hazards analysis. Dose intensity for chemotherapy drugs was calculated according to Hryniuk and Goodyear [11]. We compared patients’ qualitative variables with the χ 2 or Fisher’s exact test. We judged differences significant if P-values were <0·05 (two-sided). All analyses were conducted as intention-to-treat using SAS 9.2 software. results As stated in the Methods section, 150 eligible patients were enrolled in the study between February 2003 and August 2008. Pathological characteristics were centrally reviewed in 148 patients (98%). Most of the patients (89%) had a nodular sclerosis subtype of HL. The median age of the patients was 28 years (range: 16–60). The sex ratio was 1:1. Eighty-seven patients (64%) presented with an IPS of 0–1. Seventy-two patients (48%) presented with stage IV disease and 30 (22%) presented with a tumor mass larger than 10 cm. Sixty-one patients (40%) had at doi:10.1093/annonc/mdu189 | original articles Annals of Oncology least one extranodal site. The marrow was involved in 12 patients (8%). Eighty patients were randomized to the ABVD arm and 70 were randomized to the BEACOPP arm. The demographic and baseline disease characteristics, according to treatment arm, are listed in Table 1. Table 1. Baseline characteristics of the patients Characteristics (no. of patients) ABVD (n = 80) Age (years) Median Range <45 Sex Male Female Erythrosite sedimentation rate Above 30 mm Below 30 mm Performance status 0 1 2 Presence of general symptoms Ann Arbor stage Stage III Stage IV Bone marrow involvement International prognostic index 0 1 2 3 Missing 28 16–60 74 % BEACOPP (n = 70) % 92 28 16–58 64 91 42 38 52 48 33 37 47 53 51 29 64 36 40 30 62 38 45 30 5 49 56 37 6 61 45 24 1 38 64 34 1 54 48 32 6 60 40 8 30 40 6 43 57 9 14 33 22 2 9 17 41 27 2 8 32 21 4 5 11 46 30 6 response to treatment As shown in Figure 1, treatment started in 77 patients and 68 because three withdrew their consent and two presented staging errors. Overall, 68 out of 77 completed the ABVD treatment and 61 out of 68 completed BEACOPP. No deaths occurred due to toxicity. The main reasons for treatment discontinuation were treatment failure (3 and 2), patient refusal (3 and 2) and toxicity (1 and 3). In the ABVD arm, the toxicity occurred as one case of intracardiac thrombosis. In the BEACOPP arm, there were two infectious complications (colitis, pneumopathy) and one allergy to etoposide. At the end of the treatments, failure to achieve CR occurred in 15 patients: 10 in the ABVD arm and 5 in the BEACOPP arm. As shown in Table 2, the CR rate was 85% for ABVD and 90% for BEACOPP. After the end of treatment evaluation, three non-CR patients were given consolidation radiotherapy in ABVD ( protocol violation) and none in BEACOPP. survival outcomes The median follow-up period was 5.5 years. Seventeen relapses were observed: 14 patients in the ABVD arm versus 3 in the BEACOPP arm. The EFS at 5 years was estimated at 62% (50; 71) versus 77% (65; 85), respectively [HR = 0.6 (0.33; 1.06), P = 0.07] (Figure 2). Regarding the sample size computation hypothesis on the primary end point, the one-sided log-rank test P-value for EFS was estimated at 0.038. The PFS at 5 years was 75% (63; 83) versus 93% (83; 97) [HR = 0.3 (0.12; 0.77), P = 0.007] (Figure 3). Among the 22 patients who failed to respond or who relapsed, 12 patients among the 17 patients in the ABVD arm and 5 patients among the 5 patients in the BEACOPP arm received stem cell transplantation after a salvage regimen. Overall, seven patients died: six in the ABVD arm and one in the BEACOPP arm. In the ABVD arm, the cause of death was the HL for three patients, second cancer for two patients and 150 patients randomized 80 in ABVD 70 in BEACOPP 1 Error 2 Patient Refusal 1 Error 1 Patient Refusal 77 started treatment 68 started treatment 3 Failure 1 Toxicity 3 Patient Refusal 2 Other 2 Failure 3 Toxicity 2 Patient Refusal 68 completed treatment 61 completed treatment Figure 1. Consort diagram of the study population. | Mounier et al. Volume 25 | No. 8 | August 2014 original articles Annals of Oncology arm. There were 20 severe adverse events in the ABVD arm versus 62 in the BEACOPP arm; all were in relation with treatmentrelated morbidity. Grade 3–4 hematological events were reported during treatment in the ABVD and BEACOPP arms in 8% and 35% of the patients for febrile neutropenia, 42% and 75% of the patients for granulocytes and 0% and 21% of the patients for platelets. The most frequently reported grade 3 or 4 non-hematological events in the ABVD and BEACOPP arms were fatigue (2% and 7%) and sensitive neuropathy (0% and 7%). Other grade 3 or 4 adverse events were not clinically relevant in both arms (Table 3). Second cancers occurred in five ABVD patients and in one BEACOPP patient (non-HL 2 and 1, lung 1 and 0, digestive 2 and 0). The three lymphoma subtypes were: T-not otherwise specified and T-angioimmunoblastic for the ABVD cases and EBV-induced B large cell lymphoma for the BEACOPP case. The three patients died from their lymphomas. Among the five ABVD patients, three received second-line HL treatment. The T-Angioimmunoblastic lymphoma case occurred after DHAP, and two solid tumors occurred after ASCT following ICE or DHAP. See supplementary Figure S1 available at Annals of Oncology online. accident for the remaining patient. The only death in the BEACOPP arm was due to a second malignancy. The 5-year OS was estimated at 92% (81; 97) versus 99% (90; 100) [HR = 0.18 (0.02; 1.53), P = 0.06]. adverse events A total of 1124 cycles of chemotherapy were administered with 597 administered ABVD and 527 administered BEACOPP. Hospitalizations occurred in 11% (ABVD) and 37% (BEACOPP) of the patients. The main reason for hospitalization was the administration of chemotherapy (81% of cases). The other reasons for hospitalization were the management of toxicity (8%) and tumor symptoms (5%). The median dose intensity was 98%, 92%, 97% and 98% for doxorubicin, bleomycin, vinblastine and dacarbazine in the ABVD arm. It was 100%, 95%, 98%, 100%, 100% and 99% for doxorubicin, bleomycin, vincristine, etoposide, cyclophosphamide and procarbazine in the escalated BEACOPP arm and 98%, 90%, 80%, 98%, 99% and 96%, respectively, in the baseline BEACOPP Table 2. Response after treatment ABVD (n = 77) Response after 8 cycles Complete response Unconfirmed complete response Partial response Stable disease Progressive disease Stop before 8 cycles n = 68 34 24 5 0 5 n=9 discussion BEACOPP (n = 68) % 50 35 7 0 7 n = 61 28 27 6 0 0 n=7 A homogeneous group of patients with good prognoses with stage III and IV HL were enrolled in the present phase III randomized trial to assess the range of benefit achieved in increasing the chemotherapy dose intensity in the conventional range. No radiotherapy was allowed in this trial. ABVD ×8 cycles was selected as the standard regimen and BEACOPPescalated ×4 ≥ BEACOPPbaseline ×4 was selected as the experimental arm. The difference in outcomes was favorable in the experimental arm. The 5-year PFS was significantly improved in the experimental % 46 44 10 0 0 Event-free survival* - Primary analysis (ITT population) with number of subjects at risk 1.0 Survival probability 0.8 0.6 0.4 0.2 0.0 1 2 1: ABVD 2: BEACOPP 80 70 55 54 49 52 45 51 38 40 26 35 18 22 12 12 5 6 0 2 0 0 1 2 3 4 5 6 7 8 9 10 EFS (Years) Figure 2. Event-free survival according to treatment arm P = 0.07. Volume 25 | No. 8 | August 2014 doi:10.1093/annonc/mdu189 | original articles Annals of Oncology Overall survival* (ITT population) with number of subjects at risk A 1.0 Survival probability 0.8 0.6 0.4 0.2 0.0 1 2 1: ABVD 2: BEACOPP 80 70 77 66 76 64 58 62 57 50 39 43 25 27 15 15 5 6 0 2 0 0 1 2 3 4 5 6 7 8 9 10 OS (Years) Progression free survival* (ITT population) with number of subjects at risk B 1.0 Survival probability 0.8 0.6 0.4 0.2 0.0 1 2 1: ABVD 2: BEACOPP 80 70 67 63 59 61 53 58 44 46 29 40 18 25 12 13 5 6 0 2 0 0 1 2 3 4 5 6 7 8 9 10 PFS (Years) Figure 3. (A) Progression-free survival according to treatment arm P = 0.007. (B) Overall survival according to treatment arm P = 0.06. arm (75% for ABVD versus 93% for BEACOPP, P = 0.008). However, the significance level was not reached for our primary end point (5-year EFS 62% for ABVD versus 77% for BEACOPP, P = 0.07) or for the 5-year OS (92% for ABVD versus 99% for BEACOPP, P = 0.08). Good results with ABVD treatment have also been published by Moccia et al. [8]. In an analysis restricted to patients <65 years old, results from Moccia et al. showed a 5-year OS ranging from 92% for patients with 2 IPS factors to 98% for patients with no adverse factors and showed a PFS ranging from 80% to 88%, respectively. In the present trial comparing BEACOPP with ABVD, treatment was administered full dose with an | Mounier et al. excellent compliance; the lack of significant gain could be explained by the small sample size of the study population (n = 150). Therefore, although the PFS results revealed the longawaited dose–response effect, it appears that BEACOPP would be a PFS benefit to 5–7% of the patients if used initially instead of ABVD. This finding has also been suggested by the two other studies that randomized ABVD and escalated-BEACOPP in patients with advanced HL [12, 13]. The baseline IPS (<3 versus ≥3) did not significantly influence the outcome of treatment in a study conducted by Viviani et al., and the gain in 5-year PFS was not significant (75% for ABVD versus 90% for BEACOPP, P = 0.125) in a study conducted by Federico et al. Volume 25 | No. 8 | August 2014 original articles Annals of Oncology the BV–AVD group. At the end of treatment, the CR was estimated at 95% for the patients treated with BV–ABVD and 96% for BV–AVD. Table 3. Frequency of grade 3–4 toxicities (all cycles) Anemia* Leukopenia* Neutropenia* Thrombopenia* Febrile neutropenia* Infection without neutropenia Allergy Fatigue Cardiovascular Digestive Pulmonary Peripheral neuropathy No. of patients ABVD % (n = 77) BEACOPP (n = 68) % 3 6 32 0 6 2 1 2 4 11 1 0 23 55 51 14 24 7 3 5 4 10 1 5 34 81 75 21 35 10 4 7 6 15 1 7 4 8 42 0 8 3 1 3 5 14 1 0 conclusion * Indicates a P-value <0.05. The immediate morbidity during treatment was higher in the BEACOPP arm: 8% of patients experienced febrile neutropenia in the ABVD arm versus 35% in the BEACOPP arm. However, all of the complications were manageable with growth factor support and a strict dose reduction, even in our multicenter setting, and no deaths occurred due to toxicity [14]. With a median follow-up period of 5.5 years, late morbidity could not be assessed. Thus far, no difference has emerged concerning cardiac and pulmonary functions. However, a striking point was noted concerning the second solid tumors. Second cancers occurred in five ABVD patients and in one BEACOPP patient (NHL 2 and 1, lung 1 and 0, other 2 and 0). Among the five ABVD patients, three received second-line HL treatment. These findings suggested that HL relapse after ABVD could now be cured but at the price of complications such as secondary cancers. At the present time, physicians are not able to predetermine which patients can be cured by ABVD and which patients will benefit from escalated BEACOPP. An interim fluorodeoxyglucose PET assessment—i.e. after two cycles of chemotherapy— can be used to predict a final outcome in HL [15, 16]. These promising findings lead investigators to launch several ongoing trials to test PET-based strategies in advanced disease. Another aim is to improve the prediction of a final outcome using molecular profiling. Recently, Scott et al. [17] succeeded in developing a predictor of survival using gene expression measured in a formalin-fixed paraffin-embedded biopsy. There was a 29% absolute difference in the 5-year OS between the high- and low-risk groups, independent of the IPS. As the study population did not receive BEACOPP, further studies are required to determine whether the high risk of death identified by the model can be overcome by BEACOPP or by novel agents combined with ABVD. In a recent trial, Younes et al. [18] treated 51 patients with six cycles of 0.6–1.2 mg/kg of brentuximab vedotin plus ABVD (BV–ABVD) or 1.2 mg/kg of brentuximab vedotin with AVD (BV–AVD). Notably, 11 of the 25 (44%) patients treated with BV–ABVD experienced pulmonary toxicity resulting in two deaths compared with 0% in Volume 25 | No. 8 | August 2014 As PET and molecular study results are not yet available, treatment with BEACOPP should be a robust option over ABVD because, even in low-risk patients, it significantly improves PFS. However, considering the high burden, morbidity and costs related to BEACOPP, the results of this study raise the issue of identifying these patients early to be able to offer them an alternative treatment on the ABVD platform. acknowledgments We are indebted to the staff of LYSA RC for coordinating the study, to Christine Stephan for acting as the project leader, to Samy Bousseta for generating the statistics and to Laurence Girard for working on the data management. All of the investigators and pathologists (special thank to Jose Audoin) from the different centers should be recognized for their work as well as the patients for their participation in the trial. List of active investigators: M. Divine, PB, P. Fenaux, B. Coiffier, O. Reman, M. Aoudjhane, A.M. Blaise, D. Bordessoule, JG, A. Bosly, F. Morschhauser, D. Caillot, H. Gonzalez, P. Lederlin, R. Bouabdallah, A. Van Hoof, O. Boulat, F. Bauduer, O. Tournilhac, PC, D. Decaudin, C. Sebban, M. Janvier, A. Kentos, L. Voillat, JJ, M. Fabbro, PC, J.C. Eisenmann, C. Martin, B. Christian, A. Ferrant, C. Salanoubat, B. Varet, K. Bouabdallah, B. De Prijck, X. Levaltier, S. Castaigne, B. Audhuy, AD, N. Frenkiel, C. Rose, O. Fitoussi, H. Orfeuvre, J. M. Pignon. funding Supported by research grants from French Programme Hospitalier de Recherche Clinique (PHRC AOM01066 2001) and Chugai Company. disclosure The authors have declared no conflicts of interest. references 1. Bonadonna G, Viviani S, Bonfante V et al. Survival in Hodgkin’s disease patients— report of 25 years of experience at the Milan Cancer Institute. Eur J Cancer 2005; 41: 998–1006. 2. Diehl V, Franklin J, Hasenclever D et al. BEACOPP, a new dose-escalated and accelerated regimen, is at least as effective as COPP/ABVD in patients with advanced-stage Hodgkin’s lymphoma: interim report from a trial of the German Hodgkin’s Lymphoma Study Group. J Clin Oncol 1998; 16: 3810–3821. 3. Diehl V, Franklin J, Pfreundschuh M et al. Standard and increased-dose BEACOPP chemotherapy compared with COPP-ABVD for advanced Hodgkin’s disease. N Engl J Med 2003; 348: 2386–2395. 4. Engert A, Diehl V, Franklin J et al. Escalated-dose BEACOPP in the treatment of patients with advanced-stage Hodgkin’s lymphoma: 10 years of follow-up of the GHSG HD9 study. J Clin Oncol 2009; 27: 4548–4554. doi:10.1093/annonc/mdu189 | original articles 5. Wongso D, Fuchs M, Plutschow A et al. Treatment-related mortality in patients with advanced-stage Hodgkin lymphoma: an analysis of the German Hodgkin Study Group. J Clin Oncol 2013; 31: 2819–2824. 6. Skoetz N, Trelle S, Rancea M et al. Effect of initial treatment strategy on survival of patients with advanced-stage Hodgkin’s lymphoma: a systematic review and network meta-analysis. Lancet Oncol 2013; 14: 943–952. 7. Hasenclever D, Diehl V. A prognostic score for advanced Hodgkin’s disease: International Prognostic Factors Project on Advanced Hodgkin’s Disease. 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Early interim 2-[18F]fluoro-2-deoxy-Dglucose positron emission tomography is prognostically superior to international prognostic score in advanced-stage Hodgkin’s lymphoma: a report from a joint Italian–Danish study. J Clin Oncol 2007; 25: 3746–3752. Engert A, Haverkamp H, Kobe C et al. Reduced-intensity chemotherapy and PETguided radiotherapy in patients with advanced stage Hodgkin’s lymphoma (HD15 trial): a randomised, open-label, phase 3 non-inferiority trial. Lancet 2012; 379: 1791–1799. Scott DW, Chan FC, Hong F et al. Gene expression-based model using formalinfixed paraffin-embedded biopsies predicts overall survival in advanced-stage classical Hodgkin lymphoma. J Clin Oncol 2013; 31: 692–700. Younes A, Connors JM, Park SI et al. Brentuximab vedotin combined with ABVD or AVD for patients with newly diagnosed Hodgkin’s lymphoma: a phase 1, openlabel, dose-escalation study. Lancet Oncol 2013; 14: 1348–1356. Annals of Oncology 25: 1628–1635, 2014 doi:10.1093/annonc/mdu173 Published online 14 May 2014 Comprehensive gene expression meta-analysis of head and neck squamous cell carcinoma microarray data defines a robust survival predictor L. De Cecco1, P. Bossi2, L. Locati2, S. Canevari1,3* & L. Licitra2 1 Functional Genomics and Informatics, Department of Experimental Oncology and Molecular Medicine; 2Head and Neck Medical Oncology Unit, Department of Molecular Oncology; 3Molecular Therapies, Department of Experimental Oncology and Molecular Medicines, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy Received 2 August 2013; revised 24 February 2014 and 24 April 2014; accepted 28 April 2014 Background: Head and neck squamous cell carcinoma refers to a heterogeneous disease frequently aggressive in its biologic behavior. Despite the improvements in the therapeutic modalities, the long-term survival rate remained unchanged over the past decade and patients with this type of cancer are at a high risk of developing recurrence. For this reason, there is a great need to find better ways to foresee outcome, to improve treatment choices, and to enable a more personalized approach. Patients and methods: Nine microarray gene expression datasets, reporting survival data of a total of 841 samples, were retrieved from publicly repositories. Three datasets, profiled on the same version of microarray chips, were selected and merged following a meta-analysis approach to build a training set. The remaining six studies were used as independent validation sets. Results: The training set led us to identify a 172-gene signature able to stratify patients in low or high risk of relapse [log-rank, P = 2.44e−05; hazard ratio (HR) = 2.44, 95% confidence interval (CI) 1.58–3.76]. The model based on the 172 genes was validated on the six independent datasets. The performance of the model was challenged against other proposed prognostic signatures (radiosensitivity index, 13-gene oral squamous cell carcinoma signature, hypoxia metagene, 42-gene high-risk *Correspondence to: Dr Silvana Canevari, Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, via Amadeo 42, Milan 20133, Italy, Tel: +39-02-23902567; E-mail: [email protected] © The Author 2014. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved. For permissions, please email: [email protected].
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