Armenian, Saro H.

Abstract The discipline of Cardio-Oncology has seen tremendous growth over the past decade. It is devoted to the cardiovascular (CV) care of the cancer patient, especially to the mitigation and management of CV complications or toxicities of cancer therapies, which can have profound implications on prognosis. To that effect, many studies have assessed CV toxicities in patients undergoing various types of cancer therapies; however, direct comparisons have proven difficult due to lack of uniformity in CV toxicity endpoints. Similarly, in clinical practice, there can be substantial differences in the understanding of what constitutes CV toxicity, which can lead to significant variation in patient management and outcomes. This document addresses these issues and provides consensus definitions for the most commonly reported CV toxicities, including cardiomyopathy/heart failure and myocarditis, vascular toxicity, and hypertension, as well as arrhythmias and QTc prolongation. The current document reflects a harmonizing review of the current landscape in CV toxicities and the definitions used to define these. This consensus effort aims to provide a structure for definitions of CV toxicity in the clinic and for future research. It will be important to link the definitions outlined herein to outcomes in clinical practice and CV endpoints in clinical trials. It should facilitate communication across various disciplines to improve clinical outcomes for cancer patients with CV diseases.

Introduction: Standard of care for patients (pts) with relapsed or refractory (RR) Hodgkin lymphoma (HL) is salvage therapy (tx) followed by autologous hematopoietic cell transplantation (HCT). However, most pts with high-risk RR HL will relapse after HCT. The AETHERA study demonstrated that post-HCT consolidation with brentuximab vedotin (BV) in high-risk HL pts improved progression-free survival (PFS) compared to placebo, particularly in pts with 2+ risk factors (Moskowitz, 2018). Pts with prior BV exposure were excluded from AETHERA, and BV is increasingly used prior to HCT in HL. PD1 blockade is effective in pts with RR HL and PD1 monotherapy as post-HCT consolidation in HL resulted in promising 18 mo PFS (Armand, 2019). Combined BV and nivolumab (Nivo) is a safe and effective salvage tx in HL, therefore we conducted a multicenter phase 2 study to evaluate the safety and efficacy of BV-Nivo post-HCT consolidation in high risk RR HL. Methods: After HCT, adult pts with high-risk HL defined as having ≥ 1 of the following modified AETHERA risk factors were eligible: primary refractory HL, relapse < 1 year of completing initial tx, extranodal disease (dz) at relapse, B symptoms (sx) at relapse, requiring > 1 salvage tx, not in CR at HCT. Prior BV or PD1 blockade were allowed if pts were not refractory. Pts underwent HCT according to institutional standards at the 5 centers. Starting between day 30-75 after HCT, pts received 1.8 mg/kg of BV and 3mg/kg nivo q21 days for a planned 8 cycles. If 1 drug was discontinued due to toxicity, the other could be continued. Investigators assessed response and progressive disease (PD) according to the 2014 Lugano classification. The primary endpoint was 18 mo PFS from study tx initiation. Secondary endpoints were overall survival (OS), safety, and the response rate in pts not in complete response (CR) at baseline. Results: 59 pts were enrolled and treated with at least one dose of study tx. Baseline characteristics are listed in Table 1. 18 (31%) pts were primary refractory, 35 (59%) had early relapse, 23 (39%) had extranodal dz and 14 (24%) had B sx at relapse, 15 (25%) received > 1 salvage tx before HCT, and 48 (81%) were in CR at HCT. 21 (36%) had 1 modified AETHERA risk factor, 23 (40%) had 2 and 14 (24%) had 3+ risk factors. The median follow-up time from study tx initiation was 15.7 months (range, 2.8-35.5). Patients initiated BV-nivo a median 54 days from HCT (range, 34-75) and received a median of 8 cycles (range, 1-8). 29 (49%) pts completed all 8 cycles of BV and nivo and 45 (76%) patients completed 8 cycles of one drug. 14 (24%) pts discontinued both BV and nivo early, including 6 for adverse events (AE), 6 pt withdrawals, 1 pt lost to follow-up, and 1 pt death from PJP pneumonia unrelated to study tx. BV was discontinued in 8 (14%) pts - due to grade (gr) 3 peripheral neuropathy (PN) in 2 pts, gr 2 PN in 2 pts, carpal tunnel syndrome in 1 pt, gastrointestinal AEs in 2 pts, and infusion related reaction in 1 pt. Nivo was discontinued in 7 (12%) pts - due to pneumonitis in 2 pts, and colitis, elevated bilirubin, abnormal transaminases, pneumonia with elevated creatinine, and hypotension with fever in 1 pt each. BV was dose reduced to 1.2mg/kg in 11 (19%) pts, 9 pts for PN, and 1 each for neutropenia and arthralgia. The most common AEs related to BV-Nivo consolidation were PN (51%, 3% gr 3), neutropenia (42%, 31% gr 3-4), fatigue (37%), diarrhea (29%, 3% gr 3), nausea (25%, 2% gr 3), arthralgia (24%), AST elevation (24%, 2% gr 3). The most frequent gr 3-4 AEs were neutropenia (31%), pneumonitis (7%), and ALT elevation (5%). Immune-related (ir) AEs requiring systemic corticosteroids occurred in 18 (31%) patients. Most common Gr 2 or higher irAEs included: pneumonitis (12%), AST or ALT elevation (8%), hypothyroidism (5%), and rash (3%). 6 pts were not in CR at baseline after HCT (all PR). 5 pts converted to CR with study tx and 1 pt remained in PR without PD. There were only 2 PFS events, 1 pt with relapse at 15 months and PJP-related death after prophylaxis was self-discontinued. The estimated 18 mo PFS and OS in all patients were 95% and 98%, respectively. The estimated 18 mo PFS in pts with 2+ and 3+ risk factors were 92% and 89%, respectively. Conclusions: Post-HCT consolidation with BV-Nivo in pts with high-risk RR HL is a promising approach, with only 1 relapse observed in our cohort with short follow-up thus far. Post-HCT BV-Nivo was tolerable, though IrAEs were observed more frequently than in the pre-HCT setting and PN and neutropenia were common. Disclosures Herrera: Pharmacyclics: Research Funding; Karyopharm: Consultancy; AstraZeneca: Research Funding; Gilead Sciences: Consultancy, Research Funding; Immune Design: Research Funding; Seattle Genetics: Consultancy, Research Funding; Genentech, Inc./F. Hoffmann-La Roche Ltd: Consultancy, Research Funding; Merck: Consultancy, Research Funding; Bristol Myers Squibb: Consultancy, Other: Travel, Accomodations, Expenses, Research Funding. Nieto:Affimed: Consultancy, Other: Grant Support; Secura Bio: Other: Grant Support; Novartis: Other: Grant Support; Astra Zeneca: Other: Grant Support. Holmberg:Sanofi: Research Funding; Seattle Genetics: Research Funding; Millenium-Takeda: Research Funding; Bristol-Myers Squibb: Research Funding; UpToDate: Patents & Royalties: Royalties; Janssen: Research Funding; Merck: Research Funding. Mei:Sanofi: Consultancy; Morphosys: Membership on an entity's Board of Directors or advisory committees. Chen:Autolus Therapeutics: Current Employment. Rosen:Abbvie: Speakers Bureau; Seattle Genetics: Consultancy; NeoGenomics: Consultancy; Aileron Therapeutics: Consultancy; Novartis: Consultancy; Pebromene: Consultancy; Celgene: Speakers Bureau; paradigm Medical Communications: Speakers Bureau. Kwak:CJ Healthcare: Consultancy; Xeme Biopharma/Theratest: Other: equity; Sellas Life Sciences Grp: Consultancy; Enzychem Life Sciences: Membership on an entity's Board of Directors or advisory committees; Antigenics: Other: equity; InnoLifes, Inc: Consultancy, Membership on an entity's Board of Directors or advisory committees; Pepromene Bio: Consultancy, Membership on an entity's Board of Directors or advisory committees; Celltrion Healthcare: Membership on an entity's Board of Directors or advisory committees; Celltrion, Inc.: Consultancy. Feldman:Portola: Research Funding; Pfizer: Research Funding; Kyowa Kirin: Consultancy, Research Funding; Eisai: Research Funding; Cell Medica: Research Funding; Amgen: Research Funding; Pharmacyclics: Honoraria, Other, Speakers Bureau; Abbvie: Honoraria; Bayer: Consultancy, Honoraria; Trillium: Research Funding; Janssen: Speakers Bureau; Viracta: Research Funding; Rhizen: Research Funding; Corvus: Research Funding; BMS: Consultancy, Honoraria, Research Funding; Kite: Honoraria, Other: Travel expenses, Speakers Bureau; Celgene: Honoraria, Research Funding; Takeda: Honoraria, Other: Travel expenses; Seattle Genetics, Inc.: Consultancy, Honoraria, Other: Travel expenses, Research Funding, Speakers Bureau; AstraZeneca: Consultancy. OffLabel Disclosure: Nivolumab is not FDA-approved for use as consolidation after autologous stem cell transplantation

Certain cancer treatments have been linked to specific cardiovascular toxicities, including (but not limited to) cardiomyopathy, atrial fibrillation, arterial hypertension, and myocarditis. Radiation, anthracyclines, human epidermal growth factor receptor 2 (Her2)-directed therapies, fluoropyrimidines, platinums, tyrosine kinase inhibitors and proteasome inhibitors, immune checkpoint inhibitors, and chimeric antigen-presenting (CAR)-T cell therapy can all cause cardiovascular side effects. Management of cardiovascular dysfunction that occurs during cancer therapy often requires temporary or permanent cessation of the risk-potentiating anti-neoplastic drug as well as optimization of medical management from a cardiovascular standpoint. Stem cell or bone marrow transplant recipients face unique cardiovascular challenges, as do patients at extremes of age.

Abstract Purpose: Low-dose tamoxifen reduces breast cancer risk, but remains untested in chest-irradiated cancer survivors—a population with breast cancer risk comparable with BRCA mutation carriers. We hypothesized that low-dose tamoxifen would be safe and efficacious in reducing radiation-related breast cancer risk. Patients and Methods: We conducted an investigator-initiated, randomized, phase IIb, double-blinded, placebo-controlled trial (FDA IND107367) between 2010 and 2016 at 15 U.S. sites. Eligibility included ≥12 Gy of chest radiation by age 40 years and age at enrollment ≥25 years. Patients were randomized 1:1 to low-dose tamoxifen (5 mg/day) or identical placebo tablets for 2 years. The primary endpoint was mammographic dense area at baseline, 1 and 2 years. IGF-1 plays a role in breast carcinogenesis; circulating IGF-1 and IGF-BP3 levels at baseline, 1 and 2 years served as secondary endpoints. Results: Seventy-two participants (low-dose tamoxifen: n = 34, placebo: n = 38) enrolled at a median age of 43.8 years (35–49) were evaluable. They had received chest radiation at a median dose of 30.3 Gy. Compared with the placebo arm, the low-dose tamoxifen arm participants had significantly lower mammographic dense area (P = 0.02) and IGF1 levels (P < 0.0001), and higher IGFBP-3 levels (P = 0.02). There was no difference in toxicity biomarkers (serum bone-specific alkaline phosphatase, lipids, and antithrombin III; urine N-telopeptide cross-links) between the treatment arms. We did not identify any grade 3–4 adverse events related to low-dose tamoxifen. Conclusions: In this randomized trial in chest-irradiated cancer survivors, we find that low-dose tamoxifen is effective in reducing established biomarkers of breast cancer risk and could serve as a risk-reduction strategy.

Pediatric aggressive mature B-cell lymphomas are the most common types of non-Hodgkin lymphoma in children, and they include Burkitt lymphoma (BL) and diffuse large B-cell lymphoma (DLBCL). These diseases are highly aggressive but curable, the treatment is complex, and patients may have many complicated supportive care issues. The NCCN Guidelines for Pediatric Aggressive Mature B-Cell Lymphomas provide guidance regarding pathology and diagnosis, staging, initial treatment, disease reassessment, surveillance, therapy for relapsed/refractory disease, and supportive care for clinicians who treat sporadic pediatric BL and DLBCL.

The NCCN Guidelines for Survivorship provide screening, evaluation, and treatment recommendations for consequences of adult-onset cancer and its treatment, with the goal of helping healthcare professionals who work with survivors, including those in primary care. The guidelines also provide recommendations to help clinicians promote physical activity, weight management, and proper immunizations in survivors and facilitate care coordination to ensure that all of the survivors’ needs are addressed. These NCCN Guidelines Insights summarize additions and changes made to the guidelines in 2020 regarding cardiovascular disease risk assessment and screening for subsequent primary malignancies.

Background: Lymphoma patients exposed to chest RT during adolescence/young adulthood are at increased risk for BC; the cumulative incidence exceeds 20% by age 45 and the BC risk is comparable to that in women with BRCA1 mutations. These findings present an urgent yet unmet need to reduce the risk of BC in RT-exposed lymphoma survivors. The risk of BC is 50% lower in chest RT-exposed survivors who also receive ovarian radiation, suggesting a critical role of endogenous estrogens in RT-related breast carcinogenesis, making tamoxifen (a selective estrogen receptor modulator) an attractive risk-reducing option. Tamoxifen administered at 20 mg/d is effective in BC prevention in other high risk populations, but severe adverse events (SAE: venous thromboembolism, endometrial cancer) have limited its broad use. Previous biomarker trials in the general population have shown that LDTam (5mg/d) is not inferior to tamoxifen at 20 mg/d in reducing BC risk, and is associated with a safer AE profile. Mammographic breast density (MBD) is an established biomarker of BC risk; high MBD is associated with a 4-fold higher risk of BC. We hypothesized that LDTam would be effective in reducing BC risk (using MBD as a primary endpoint) in chest RT-exposed lymphoma survivors. We used an investigator-initiated, multi-institutional, randomized phase IIb, double blind, placebo controlled trial (FDA IND 107367) to test this hypothesis. Methods: Female patients from 13 sites were ≥25y at enrollment, with a history of exposure to chest RT at ≥12 Gy by age 40 for their primary cancer, and were off therapy for ≥6 mo. Subjects with a prior history of BC/DCIS, B/L mastectomy, or baseline MBD <25% in both breasts were excluded. Tamoxifen 5mg or identical placebo tablets were provided by Sharp Clinical Services (Allentown, PA) under good manufacturing practice. Subjects were randomized 1:1 in a double-blinded fashion by a Web-based system to receive LDTam or placebo daily for 2y. MBD (in both breasts) was measured centrally on digital scans independently by 3 radiologists at baseline, 1y and 2y. Using an intention-to-treat analysis, the efficacy of LDTam in reducing MBD was compared between the LDTam and placebo arms by applying a linear mixed effects model for bivariate normally distributed data with random intercept and time*treatment arm effects. Correlations between the left and right breasts and within radiologists were accounted for in the model. Treating clinicians and all research staff were blinded to the treatment arm. Results: A total of 72 patients (LDTam: n=34; placebo: n=38) participated in the trial; primary diagnosis: Hodgkin lymphoma (86%); non-Hodgkin lymphoma (10%); other (3%); median age at diagnosis of primary cancer: 21.5y (IQR, 16-28), and at trial enrollment: 43.8y (35-49); median time from diagnosis of primary cancer to study: 17.0y (12-26). Median chest RT dose: 30.3 Gy (21-37.3); 11% had received pelvic radiation; 39% were post-menopausal at study. Participant characteristics were comparable between the two treatment arms, as was the mean baseline MBD (LDTam: 52.6% vs. placebo: 50.4%, p=0.6). The time*treatment arm effect was statistically significant (LDTam vs. placebo: estimate = -1.7, SE = 0.5, p = 0.001), indicating a significantly lower mean fitted MBD for LDTam (43.9%) vs. placebo (47.3%) at 2y (Figure). This represented a 16.5% relative reduction in MBD on the LDTam arm, corresponding to an estimated 33% lower risk of BC (assuming that reductions in MBD have the same benefit in lymphoma survivors as they do in the general population). There were no grade 3 or 4 AEs related to LDTam. Grade 2 AEs did not differ between treatment arms (LDTam: 44.1% vs. placebo: 36.8%, p=0.6). There was no difference in the prevalence of moderate-to-severe patient-reported outcomes between the treatment arms (Table). Conclusion: Low-dose tamoxifen was associated with a significantly steeper decline in MBD in chest RT-exposed lymphoma survivors, when compared with placebo, and was safe and well-tolerated. This is the first trial demonstrating efficacy of a pharmacologic intervention in reducing a biomarker strongly associated with breast cancer risk in lymphoma survivors with a past history of chest radiation. Disclosures Palomares: Covance: Other: Medical monitoring. Henderson:Seattle Genetics: Research Funding. OffLabel Disclosure: The drug is a low-dose tamoxifen, a selective estrogen receptor modulator. Tamoxifen in standard doses is used to reduce the risk of breast cancer in high risk populations. Tamoxifen in standard or low doses have not been tested before for chest-irradiated cancer survivors to reduce the risk of radiation-related breast cancer.

The NCCN Guidelines for Survivorship provide screening, evaluation, and treatment recommendations for consequences of cancer and cancer treatment to aid healthcare professionals who work with survivors of adult-onset cancer. Guidance is also provided to help promote physical activity, weight management, and proper immunizations in survivors and to facilitate care coordination to ensure that all needs are addressed. These NCCN Insights summarize some of the topics discussed by the NCCN Survivorship Panel during the 2019 update of the guidelines, including the survivorship population addressed, ways to improve care coordination, and pain management.

e23081 Background: Anthracycline-induced cardiotoxicity (AIC) is a well-known phenomenon, but the true incidence is poorly defined, and definitions of AIC in the literature are variable. We performed a systematic review and meta-analysis to elucidate AIC definitions and the incidence of clinical heart failure (HF) and subclinical AIC reported in adult breast cancer and lymphoma patients after anthracycline (AC) therapy. Methods: 3,428 abstract and titles were identified via PubMed search. Inclusion criteria for full text review included minimum of 100 adult patients receiving ACs; median/mean follow up of at least 12 months; and specified evaluation of left ventricular ejection fraction. Outcomes were divided into clinical HF and subclinical AIC. Meta-analysis was performed with MedCalc software with random effects model. Results: 366 full text articles were reviewed. 24 studies, including a total of 11,065 patients, reported clinical HF findings; 21 studies, including a total of 8,098 patients, reported subclinical AIC findings. Meta-analysis showed an overall incidence of clinical HF of 3.1% (range 0 to 29%, CI 1.9 to 4.6%, I2= 93.9%); an incidence of 2.0% (CI 0.9 to 3.6%, I2 = 91.6%) in breast cancer patients receiving AC; and 4.8% in lymphoma patients receiving AC (CI 2.1 to 8.6%, I2 = 93.6%). Subclinical AIC was seen in 13.8% overall patients (range 2 to 45%, CI 10.4 to 17.7%, I2= 95.3%); 10.3% of breast cancer patients (CI 7.0 to 14.3%, I2= 95.0%); and 19.8% of lymphoma patients (CI 12.3 to 28.6%, I2= 94.4%). Incidence of HF correlated with increasing age (r = 0.51, p = 0.06) and cumulative dose (r = 0.51 , p = 0.19). There was notable heterogeneity of AIC definitions between studies (Table). Conclusions: Cardiotoxicity is not uncommon among patients who receive AC, particularly at doses given for the treatment of lymphoma. However, there was considerable heterogeneity in HF incidences. More uniform criteria and precise estimates are needed to inform clinical practice and trials. [Table: see text]