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PET with (18)F-FDG is a standard staging procedure for most lymphoma subtypes. Performed during and after therapy for Hodgkin lymphoma (HL) and aggressive non-Hodgkin lymphoma (NHL), (18)F-FDG PET results have a high prognostic value and correlate with survival. (18)F-FDG PET has been incorporated into revised response criteria for aggressive lymphomas, and several ongoing trials are under way to investigate the value of treatment adaptation based on early (18)F-FDG PET results for HL and aggressive NHL. There is little evidence to support the use of (18)F-FDG PET for monitoring of the treatment of indolent lymphomas and for routine use in the surveillance setting. So that trial results can be compared and translated easily into clinical practice, uniform and evidence-based guidelines for the interpretation and reporting of response monitoring scans are warranted. Because it is still not proven that the use of interim (18)F-FDG PET can improve patient outcomes, we recommend examination of the use of (18)F-FDG PET for response monitoring in appropriately designed clinical trials.

Background Response to modern treatment strategies, which combine cytotoxic compounds with immune stimulatory agents and targeted treatment is highly variable among MCL patients. Thus, providing prognostic and predictive markers for risk adapted therapy is warranted and molecular information that can help in patient stratification is a necessity. In relapsed MCL, biopsies are rarely available and molecular information from tumor tissue is often lacking. Today, the main tool to access risk is the MCL international prognostic index (MIPI), which does not include detailed biological information of relevance for different treatment options. To enable continuous monitoring of patients, non-invasive companion diagnostic tools are needed which can further reduce cost and patient distress and enable efficient measurements of biological markers. Methods We have assessed if serum-based protein profiling can identify immune related proteins that stratify relapsed MCL patients based on risk. Overall, 371 scFv targeting 158 proteins were assessed using an antibody microarray platform. We profiled patients ( n  = 44) who had been treated within the MCL6-Philemon trial combining targeted and immune-modulatory treatment. Results The downstream processing led to the identification of the relapsed immune signature (RIS) consisting of 11 proteins with potential to stratify patients with long and short overall survival (OS). Moreover, in this population, MIPI alone failed to separate high, intermediate and low risk patients, but a combined index based on MIPI together with RIS, MIPI ris , showed improved performance and significantly stratified all three risk groups based on OS. Conclusions Our results show that addition of biological parameters to previous prognostic indices improves patient stratification among patients treated with BTK inhibitor triplet combination, particularly, in the identification of an extreme high risk group.

BackgroundDoxorubicin is a cornerstone in lymphoma treatment, but is limited by dose-dependent cardiotoxicity. Rubidium-82 positron emission tomography (82Rb PET) assesses coronary microvascular function through absolute quantification of myocardial perfusion and myocardial perfusion reserve (MPR). Doxorubicin-induced microvascular injury represents a potential early marker of cardiotoxicity.Methods and resultsWe included 70 lymphoma patients scheduled for doxorubicin-based treatment. Cardiotoxicity was evaluated with 82Rb PET myocardial perfusion imaging during rest and adenosine stress before chemotherapy and shortly after the first doxorubicin exposure. Patients with a MPR decline > 20% were defined as having a low threshold for cardiotoxicity. In the 54 patients with complete data sets, MPR was significantly lower after the initial doxorubicin exposure (2.69 vs 2.51, P = .03). We registered a non-significant decline in stress perfusion (3.18 vs 3.02 ml/g/min, P = .08), but no change in resting myocardial perfusion. There were 13 patients with a low cardiotoxic threshold. These patients had a significantly higher age, but were otherwise similar to the remaining part of the study population.ConclusionDecreases in MPR after initial doxorubicin exposure in lymphoma patients may represent an early marker of doxorubicin-induced cardiotoxicity. The prognostic value of acute doxorubicin-induced changes in MPR remains to be investigated.

Purpose We explored the potential overall survival (OS) benefit of bleomycin, etoposide, doxorubicin (Adriamycin), cyclophosphamide, vincristine (Oncovin), procarbazine, and prednisone (BEACOPP) over doxorubicin (Adriamycin), bleomycin, vinblastine, and dacarbazine (ABVD) in a pooled analysis of four randomized trials. Patients and methods Primary objective was to evaluate the OS impact of BEACOPP using individual patient data. Secondary objectives were progression‐free survival (PFS), secondary cancers, and use of autologous stem cell transplantation (ASCT). Results About 1227 patients were included. The 7‐year OS was 84.3% (95% CI 80.8‐87.2) for ABVD vs 87.7% (95% CI 84.5‐90.2) for BEACOPP. Two follow‐up periods were identified based on survival curves and hazard ratio (HR) over time. For the first 18 months, there was no difference. For the second period of ≥18 months, ABVD patients had a higher death risk (HRABVD vs BEACOPP = 1.59; 95% CI 1.09‐2.33). A Cox model stratified by trial and evaluating the effect of treatment and International Prognostic Index (IPI) score as fixed effects showed that both were statistically significant (treatment, P = .0185; IPI score, P = .0107). The 7‐year PFS was 71.1% (95% CI 67.1‐74.6) for ABVD vs 81.1% (95% CI 77.5‐84.2) for BEACOPP (P < .001). After ABVD, 25 secondary cancers (4.0%) were reported with no myelodysplasia (MDS)/acute myeloid leukemia (AML) compared to 36 (6.5%) after BEACOPP, which included 13 patients with MDS/AML. Following ABVD, 86 patients (13.8%) received ASCT vs 39 (6.4%) for BEACOPP. Conclusions This analysis showed a slight improvement in OS for BEACOPP and confirmed a PFS benefit. Frontline use of BEACOPP instead of ABVD increased secondary leukemia incidence but halved the requirement for ASCT. Advanced Hodgkin lymphoma (HL) are treated with two different chemotherapy regimens (doxorubicin [Adriamycin], bleomycin, vinblastine, and dacarbazine [ABVD] or bleomycin, etoposide, doxorubicin [Adriamycin], cyclophosphamide, vincristine [Oncovin], procarbazine, and prednisone [BEACOPP]) that have two different toxicity profiles. In this pooled analysis of four randomized trials comparing these two regimens, and with a median follow‐up of 7 years, progression‐free survival is significantly superior with the BEACOPP regimen. The 7 years overall survival was 84.3% for ABVD and 87.7% for BEACOPP. The main cause of death after ABVD is HL, but second malignancy including 10 myeloid malignancies after BEACOPP.

Relapsed or refractory mantle cell lymphoma (R/R MCL) remains difficult to treat, with outcomes dependent on the treatment regimen and remission duration after first‐line therapy. Several non‐chemotherapeutic regimens are under evaluation in R/R, but few studies report long‐term outcomes. In this study, we present the long‐term outcomes of the 50 patients treated with ibrutinib, lenalidomide, and rituximab (IR2) in the Nordic Lymphoma Group MCL6 Philemon phase 2 trial. Survival outcomes were compared with a matched cohort from the Swedish MCLcomplete study. After 5 years, 14 patients (28%) remained relapse‐free, including one with a TP53 mutation. The median progression‐free survival (PFS) was 17.4 months, with the longest PFS of 8.1 years. Thirty‐two patients had died, primarily from MCL (72%). Poorer survival was associated with intermediate or high‐risk Mantle Cell Lymphoma International Prognostic Index and impaired health‐related quality of life (HRQoL). While TP53 mutations (n = 11) did not significantly impact survival, a trend toward poorer outcomes was observed in multivariable Cox regression analyses (PFS hazard ratio: 2.09, 95% confidence interval: 0.95–4.62, p = 0.068). The IR2 regimen demonstrated superior survival compared to the MCLcomplete cohort both before and after matching. In conclusion, this study highlights the role of non‐chemotherapeutic agents in R/R MCL and demonstrates the prognostic impact of HRQoL on overall survival. Although IR2 showed initial activity in TP53‐mutated patients, it did not completely overcome their poor prognosis. However, the IR2 regimen may serve as a bridge to allogeneic stem cell transplantation or chimeric antigen receptor T‐cell therapy.

Cancer‐related psychological distress may lead to depression and anxiety among survivors. The vast majority of patients with Hodgkin lymphoma (HL) become long‐term survivors, but the risk of mental health problems after HL is not well‐characterized. Using national population‐based registries, we investigated the cumulative incidence of psychotropic drug (antidepressants, antipsychotics, and anxiolytics) use (proxies for depression and anxiety) in HL patients as well as if an increased risk would normalize over time for patients in remission. The study included 945 HL patients aged 18‐92 years and 4725 matched persons. In total, 215 HL patients (22.8%) received a prescription of any psychotropic drug (PD) at some point after date of diagnosis compared to 545 persons (11.5%) in the matched cohort. Cumulative incidences with death/relapse as competing risk confirmed that HL patients were at higher risk of receiving psychotropic drug prescriptions, but the increased risk was transient and normalized to the matched population 5 years into survivorship. Increased age, Eastern Cooperative Oncology Group performance status, and disease stage were associated with higher risk of psychotropic drug prescriptions. Given the increased rate of psychotropic drug prescriptions after HL diagnosis, screening for symptoms of depression and anxiety is warranted after HL diagnosis and first years into survivorship. In this Danish nationwide cohort study of 945 Hodgkin lymphoma patients, we investigated the risk of anxiety and depression following diagnosis, using psychotropic drug prescriptions as proxy for anxiety and depression. Our findings showed that Hodgkin lymphoma patients had higher 5‐year cumulative incidence of receiving a prescription for a psychotropic drug (21.5%) as compared to a matched background population (8.4%).