Porrata, Luis F.

AbstractHigher ratios of the pre‐treatment peripheral blood absolute lymphocyte (ALC) to absolute monocyte counts (AMC) are associated with improved outcomes in lymphoma. Conversely, elevated pre‐treatment serum cytokines are associated with inferior outcomes. The relationship between pre‐treatment serum cytokines and ALC/AMC ratios remains unknown. We studied twelve serum cytokines and the ALC/AMC ratios in 390 patients with untreated diffuse large B‐cell, follicular, mantle cell, T‐cell, and Hodgkin lymphoma. Different pre‐treatment serum cytokine concentrations correlated with ALC, AMC, and ALC/AMC ratios depending on the lymphoma type. In the entire cohort (n = 390) lower ALC/AMC ratios modestly correlated with higher IL‐2R (r = −0.36), IL‐12 (r = −0.17), IP‐10 (r = −0.23), and MIG (r = −0.32) concentrations (p < 0.001). Elevated IL‐2R was independently associated with suppressed ALC (OR 2.69, 95% CI 1.77–4.07,p < 0.001), elevated AMC (OR 2.05, 95% CI 1.34–3.14,p < 0.001), and suppressed ALC/AMC ratios (OR 3.51, 95% CI 2.31–5.34,p < 0.001). Both elevated IL‐2R (HR 2.27, 95% CI 1.48–3.49,p < 0.001) and suppressed ALC/AMC ratios (HR 1.53, 95% CI 1.03–2.28,p = 0.037) were independently associated with inferior overall survival. These data support the notion that elevated serum cytokines are immunosuppressive and provide further rationale to target the tumor microenvironment for therapeutic benefit.

64 Background: The goals of our Lymphoma Survivorship Clinic (SC) are to coordinate care, educate patients, and create a survivorship care plan (SCP). The aim of this study was to determine if patient-centered outcomes are improved after a SC visit. Methods: From 11/13-5/15, surveys were mailed to recently-treated lymphoma patients who were within 4 weeks of their last visit and in remission. Quality of life (QOL) was measured with PROMIS and distress was measured with the Impact of Events scale. Responses between those who attended SC and those who were eligible but did not attend were analyzed. Results: There were 96 surveys sent to the SC group; 59 were returned (61% response rate). Of the non-SC group, 140 surveys were sent and 84 were returned (60% response rate). Mean age was 57 years (range 23-77) in the SC group and 59 years (23-88) in the non-SC group. There were more females in the SC group (52% vs 30%) but no differences in race, marital status, education, or health literacy. Those who attended the SC were more likely to recall receiving a summary of cancer treatment and recommendations for follow-up care (90% SC vs. 75% non-SC, p = 0.03). Furthermore, SC attendees were more likely to “definitely” recall discussion on improving health or preventing illness (89% vs. 53%), getting help in making changes in habits/lifestyle (76% vs. 50%), diet (80% vs. 31%), and exercise (82% vs. 51%), all p < 0.001. There were no differences in discussions regarding smoking, follow-up testing, and symptom monitoring. The SC group was less likely to need more information regarding sexuality (6% vs 20%, p = 0.045). There were no differences in need for information regarding anxiety, fitness, familial cancer risk, fertility, complementary therapies, and social issues. The SC group was slightly more confident that they could get information or advice related to cancer (completely confident 76% vs. 61%, p = 0.07). There were no differences in QOL or distress. Conclusions: A Lymphoma SC visit increased receipt of SCP and provided more information on survivorship issues, particularly health behaviors, but did not improve QOL or distress. Further study is needed to determine if this leads to long-term health benefits.

AbstractPatients with indolent non‐Hodgkin lymphoma (NHL) have multiple treatment options yet there is no consensus as to the best initial therapy. Lenalidomide, an immunomodulatory agent, has single agent activity in relapsed lymphoma. This trial was conducted to assess feasibility, efficacy, and safety of adding lenalidomide to rituximab, cyclophosphamide, and dexamethasone (LR‐CD) in untreated indolent NHL patients requiring therapy. This was a single institution phase II trial. Treatment consisted of IV rituximab 375 mg/m2 day 1; oral lenalidomide 20 mg days 1–21; cyclophosphamide 250 mg/m2 days 1, 8, and 15; and dexamethasone 40 mg days 1, 8, 15, and 22 of a 28‐day cycle. Treatment continued 2 cycles beyond best response for a maximum of 12 cycles without rituximab maintenance. Thirty‐three patients were treated. Median age was 68 (43–83 years). 39% had stage IV disease. Histologic subtypes included 8 follicular lymphoma (FL), 7 marginal zone lymphoma (MZL) (1 splenic, 2 extranodal, and 4 nodal), 15 Waldenström's macroglobulinemia (WM), 1 lymphoplasmacytic lymphoma, 1 small lymphocytic lymphoma, and 1 low‐grade B‐cell lymphoma with plasmacytic differentiation (unable to be classified better as MZL or LPL). Hematologic toxicity was the most common adverse event. Median time of follow‐up was 23.4 months (range 1.8–50.9). The overall response rate was 87.9%, with 30.3% complete response. The median duration of response was 38.7 months. The median progression free survival was 39.7 months, while median overall survival (OS) has not yet been reached. Lenalidomide can be safely added to a simple regimen of rituximab, oral cyclophosphamide, and dexamethasone and is an effective combination as initial therapy for low‐grade B‐cell NHL.

AbstractRelapsed indolent lymphoma often becomes refractory to standard chemoimmunotherapy and requires new therapeutic strategies. Targeting the PI3K/mTOR pathway in several types of lymphoma has shown preclinical and clinical efficacy providing the rationale to test this strategy in the treatment of relapsed/refractory indolent lymphomas. We investigated in a phase II open label clinical trial the efficacy and safety of single agent everolimus, an inhibitor of mTORC1, in patients with relapsed/refractory indolent lymphomas. Eligible patients received oral everolimus 10 mg daily on a 28 day‐cycle schedule. The primary endpoint was to evaluate the overall response rate (ORR) and safety of single‐agent everolimus in this patient population. Fifty‐five patients with indolent lymphoma were accrued. The median age was 67 years (range: 33‐85) with a median of five prior therapies (range: 1‐10). The ORR was 35% (19/55; 95% CI: 24‐48%), with complete response unconfirmed in 4% (2/55), and partial response in 31% (17/55). The ORR was 61% (14/23) in the patients with FL. The median time to response was 2.3 months (range: 1.4‐14.1), median duration of response of 11.5 months (95%‐CI: 5.7‐30.4), and a median progression‐free survival of 7.2 months (95%‐CI: 5.5‐12.5). The most common toxicity was hematologic with grades 3‐4 anemia, neutropenia, and thrombocytopenia documented in 15% (8/55), 22% (12/55), and 33% (18/55), respectively. There were no cases of febrile neutropenia, and eight patients discontinued therapy because of adverse events. Everolimus monotherapy is a valid therapeutic option in the relapsed and/or refractory indolent non‐Hodgkin lymphoma patients and is well tolerated.

In contrast to allogeneic hematopoietic stem cell transplantation, the current dogma is not an evidence of graft-versus-tumor effect in autologous hematopoietic stem cell transplantation; thus, it is assumed that autologous hematopoietic stem cell transplantation only relies on the high-dose chemotherapy to improve clinical outcomes. However, recent studies argue in favor of the existence of an autologous graft-versus-tumor without the detrimental complications of graft-versus-host disease due to the nonspecific immune response from the infused donor alloreactive immune effector cells in allogeneic hematopoietic stem cell transplantation. Herein, this paper reviews the clinical evidence of an autologous graft-versus-tumor effect based on the autograft collected and infused host immune effector cells and host immunity recovery after autologous hematopoietic stem cell transplantation affecting clinical outcomes in cancer patients.

Key Points The risk of transformation of NLPHL to DLBCL is 0.74 per 100 patient-years of follow-up. Risk factors for transformation include prior exposure to chemotherapy and splenic involvement at time of diagnosis.

We recently defined event‐free survival at 24 months (EFS24) as a clinically relevant outcome for patients with DLBCL. Patients who fail EFS24 have very poor overall survival, while those who achieve EFS24 have a subsequent overall survival equivalent to that of the age‐ and sex‐matched general population. Here, we develop and validate a clinical risk calculator (IPI24) for EFS24. Model building was performed on a discovery dataset of 1,348 patients with DLBCL and treated with anthracycline‐based immunochemotherapy. A multivariable model containing age, Ann Arbor stage, normalized serum LDH, ALC, ECOG performance status, bulky disease, and sex was identified. The model was then applied to an independent validation dataset of 1,177 DLBCL patients. The IPI24 score estimates the probability of failing to achieve the EFS24 endpoint for an individual patient. The IPI24 model showed superior discriminatory ability (c‐statistic = 0.671) in the validation dataset compared to the IPI (c‐statistic = 0.649) or the NCCN‐IPI (c‐statistic = 0.657). After recalibration of the model on the combined dataset, the median predicted probability of failing to achieve EFS24 was 36% (range, 12–88%), and the IPI24 showed an EFS24 gradient in all IPI groups. The IPI24 also identified a significant percentage of patients with high risk disease, with over 20% of patients having a 50% or higher risk of failing to achieve EFS24. The IPI24 provides an individual patient level probability of achieving the clinically relevant EFS24 endpoint. It can be used via electronic apps. Am. J. Hematol. 91:179–184, 2016. © 2015 Wiley Periodicals, Inc.