Safety of Immune Checkpoint Inhibitors in Patients With Advanced Chronic Kidney Disease: A Retrospective Cohort Study.

BACKGROUND: Clinical trials of immune checkpoint inhibitors (ICIs) often do not include patients with advanced chronic kidney disease (CKD). We aimed to determine the safety of ICIs in patients with cancer and advanced CKD (stages 4-5 CKD, estimated glomerular filtration rate [eGFR] <30 mL/minute/1.73 m2). PATIENTS AND METHODS: Patients with advanced CKD from the Mass General Brigham network who received ICIs (n = 91) were compared against those receiving nephrotoxic (n = 113) and non-nephrotoxic (n = 130) antineoplastic therapies, respectively. Rates of new-onset kidney failure (end-stage kidney disease or sustained eGFR ≤10 mL/minute/1.73 m2) and AKI were compared. Among ICI-treated patients, we modeled Fine-Gray subdistribution hazards to compare immune-related adverse event (irAE) risk and used Kaplan-Meier analysis to compare overall survival in patients with advanced CKD to those with eGFR ≥30 mL/minute/1.73 m2. RESULTS: Rates of new-onset kidney failure were similar at 1 year following initiation of ICIs (10.0%), nephrotoxic (6.2%), and non-nephrotoxic antineoplastic therapies (9.3%) (P = .28). AKI rates were also similar: 17.5%, 17.6%, and 20% of patients in each cohort, respectively (P = .87). Advanced CKD did not increase the risk of developing irAEs (adjusted hazard ratio [HR] 1.28, 95% CI, 0.91-1.81). However, patients with advanced CKD who received ICIs had a decreased overall survival compared with patients with eGFR ≥30 mL/minute/1.73 m2 (HR 1.30 for death, 95% CI, 1.02-1.66, P = .03). CONCLUSION: ICIs are not associated with increased risk of AKI or new-onset kidney failure compared with other antineoplastic therapies in patients with advanced CKD. Advanced CKD did not increase the risk of extra-renal irAEs, although these patients suffered from lower overall survival.

CBP/p300 acetyltransferase activity in hematologic malignancies.

CREB binding protein (CBP) and p300 are critical regulators of hematopoiesis through both their transcriptional coactivator and acetyltransferase activities. Loss or mutation of CBP/p300 results in hematologic deficiencies in proliferation and differentiation as well as disruption of hematopoietic stem cell renewal and the microenvironment. Aberrant lysine acetylation mediated by CBP/p300 has recently been implicated in the genesis of multiple hematologic cancers. Understanding the effects of disrupting the acetyltransferase activity of CBP/p300 could pave the way for new therapeutic approaches to treat patients with these diseases.

Low absolute risk of thrombotic and cardiovascular events in outpatient pregnant women with COVID-19.

INTRODUCTION: Pregnancy may contribute to an excess risk of thrombotic or cardiovascular events. COVID-19 increases the risk of these events, although the risk is relatively limited among outpatients. We sought to determine whether outpatient pregnant women with COVID-19 are at a high risk for cardiovascular or thrombotic events. MATERIALS & METHODS: We analyzed pregnant outpatients with COVID-19 from the multicenter CORONA-VTE-Network registry. The main study outcomes were a composite of adjudicated venous or arterial thrombotic events, and a composite of adjudicated cardiovascular events. Events were assessed 90 days after the COVID-19 diagnosis and reported for non-pregnant women ≤45 years, and for men ≤45 years, as points of reference. RESULTS: Among 6585 outpatients, 169 were pregnant at diagnosis. By 90-day follow-up, two pregnant women during the third trimester had lower extremity venous thrombosis, one deep and one superficial vein thrombosis. The cumulative incidence of thrombotic events was 1.20 % (95 % confidence interval [CI]: 0.0 to 2.84 %). Respective rates were 0.47 % (95 % CI: 0.14 % to 0.79 %) among non-pregnant women, and 0.49 % (95 % CI: 0.06 % to 0.91 %) among men ≤45 years. No non-thrombotic cardiovascular events occurred in pregnant women. The rates of cardiovascular events were 0.53 % (95 % CI: 0.18 to 0.87) among non-pregnant women, and 0.68 % (95 % CI: 0.18 to 1.18) in men aged ≤45 years. CONCLUSIONS: Thrombotic and cardiovascular events are rare among outpatients with COVID-19. Although a higher event rate among outpatient pregnant women cannot be excluded, the absolute event rates are low and do not warrant population-wide cardiovascular interventions to optimize outcomes.

Major cardiovascular events after COVID-19, event rates post-vaccination, antiviral or anti-inflammatory therapy, and temporal trends: Rationale and methodology of the CORONA-VTE-Network study.

BACKGROUND: Coronavirus disease 2019 (COVID-19) is associated with excess risk of cardiovascular and thrombotic events in the early post-infection period and during convalescence. Despite the progress in our understanding of cardiovascular complications, uncertainty persists with respect to more recent event rates, temporal trends, association between vaccination status and outcomes, and findings within vulnerable subgroups such as older adults (aged 65 years or older), or those undergoing hemodialysis. Sex-informed findings, including results among pregnant and breastfeeding women, as well as adjusted comparisons between male and female adults are similarly understudied. METHODS: Adult patients, aged ≥18 years, with polymerase chain reaction-confirmed COVID-19 who received inpatient or outpatient care at the participating centers of the registry are eligible for inclusion. A total of 10,000 patients have been included in this multicenter study, with Brigham and Women's Hospital (Boston, MA) serving as the coordinating center. Other sites include Beth Israel Deaconess Medical Center, Anne Arundel Medical Center, University of Virginia Medical Center, University of Colorado Health System, and Thomas Jefferson University Health System. Data elements will be ascertained manually for accuracy. The two main outcomes are 1) a composite of venous or arterial thrombotic events, and 2) a composite of major cardiovascular events, defined as venous or arterial thrombosis, myocarditis or heart failure with inpatient treatment, new atrial fibrillation/flutter, or cardiovascular death. Clinical outcomes are adjudicated by independent physicians. Vaccination status and time of inclusion in the study will be ascertained for subgroup-specific analyses. Outcomes are pre-specified to be reported separately for hospitalized patients versus those who were initially receiving outpatient care. Outcomes will be reported at 30-day and 90-day follow-up. Data cleaning at the sites and the data coordinating center and outcomes adjudication process are in-progress. CONCLUSIONS: The CORONA-VTE-Network study will share contemporary information related to rates of cardiovascular and thrombotic events in patients with COVID-19 overall, as well as within key subgroups, including by time of inclusion, vaccination status, patients undergoing hemodialysis, the elderly, and sex-informed analyses such as comparison of women and men, or among pregnant and breastfeeding women.

Real-world incidence and impact of pneumonitis in patients with lung cancer treated with immune checkpoint inhibitors: a multi-institutional cohort study.

BACKGROUND: Immune checkpoint inhibitors (ICIs) have improved survival and are increasingly used for non-small cell lung cancer. However, use may be limited by immune-related adverse events such as checkpoint-inhibitor pneumonitis (CIP). Literature estimates for CIP incidence are inconsistent. Real-world adherence to guidelines, clinical course, and healthcare utilization in the treatment of CIP has not been described in large cohorts. METHODS: A combined claims and electronic health record database (TriNetX) was used to identify 13,113 patients with lung cancer treated with programmed cell death receptor/ligand 1 (PD-1/PD-L1) inhibitors, and a propensity score-matched control cohort treated with chemotherapy or targeted therapies. The attributable risk of CIP was calculated in the first 12 months after therapy by comparing the incidence of diagnosis codes for pneumonitis/pneumonia between cohorts. Cases of CIP, identified by the most specific code for drug-induced respiratory conditions, were further analyzed for medication usage, rates of diagnostic bronchoscopy, ICI discontinuation rates, and usage of hospital services compared with patients receiving PD-1/PD-L1 inhibitors who did not develop CIP. RESULTS: The attributable risk of pneumonitis to PD-1/PD-L1 inhibitors was 2.49% (95% CI, 1.50% to 3.47%). Median time to onset in the CIP subcohort was 3.9 months (IQR, 2.1-7.3 months). Steroid and antibiotic use increased dramatically after a pneumonitis diagnosis, and 70.2% of patients permanently discontinued ICI therapy. Compared with controls, patients with CIP had more than a threefold increased risk of needing critical care (relative risk 3.59, 95% CI, 2.31 to 5.57) and an increased risk of mortality (HR 2.34, 95% CI, 1.47 to 3.71). CONCLUSIONS: In a large claims-based analysis, PD-1/PD-L1 inhibitors increase the risk of pneumonitis in patients with lung cancer by 2.49%. Cases of CIP are associated with high healthcare utilization, discontinuation of ICIs, and mortality.

Pre-Existing Autoimmune Disease and Mortality in Patients Treated with Anti-PD-1 and Anti-PD-L1 Therapy.

Although indications for immune checkpoint inhibitors (ICIs) have dramatically increased in the past decade, ICIs have been associated with autoinflammatory immune-related adverse events, which can resemble autoimmune diseases (ADs). Little is known about the impact of baseline AD on mortality in cancer patients treated with ICIs. Here, we identified 17 497 patients with preexisting autoimmune diagnoses prior to treatment with antiprogrammed cell death receptor-1 or antiprogrammed cell death ligand-1 therapy and 17 497 matched controls through the TriNetX Diamond network of more than 200 million patients across the United States and Europe. Using a Cox proportional hazards model, we found that patients with history of AD were not at higher risk of mortality than non-AD patients (hazard ratio [HR] = 1.03, 95% confidence interval [CI] = 1 to 1.07; P = .05). Additionally, history of Hashimoto disease (HR = 0.75, 95% CI = 0.62 to 0.90; P = .002) and vitiligo (HR = 0.52, 95% CI = 0.34 to 0.81; P = .003) were statistically significantly associated with decreased mortality. This suggests that underlying AD need not be a contraindication to inclusion in clinical trials and administration of ICI for treatment of cancer.

Association of Cutaneous Immune-Related Adverse Events With Increased Survival in Patients Treated With Anti-Programmed Cell Death 1 and Anti-Programmed Cell Death Ligand 1 Therapy.

IMPORTANCE: Despite the efficacy of immune checkpoint inhibitors (ICIs), cutaneous immune-related adverse events (cirAEs) occur in 20% to 40% of all treated patients. To our knowledge, little is known about the predictive value of these cutaneous eruptions and their subtypes regarding cancer survival. OBJECTIVE: To determine the association of developing cirAEs following treatment with anti-programmed cell death 1 (PD-1) or anti-programmed cell death ligand 1 (PD-L1) therapy with patient survival. DESIGN, SETTING, AND PARTICIPANTS: This retrospective cohort study used data from the TriNetX Diamond Network, a database of health records and claims data from more than 200 million US and European patients, to conduct a population-level cohort analysis. The study included 7008 eligible patients who developed cirAEs after treatment with anti-PD-1 or anti-PD-L1 therapy for malignant neoplasms of digestive organs, bronchus or lung, melanoma of skin, and urinary tract who were identified through the TriNetX Diamond Network along with 7008 matched controls. EXPOSURES: Development of cirAEs within 6 months following anti-PD-1 or anti-PD-L1 therapy. MAIN OUTCOMES AND MEASURES: A 6-month analysis using a Cox proportional hazards model was performed to determine the association of cirAEs with overall survival after adjusting for demographic characteristics, cancer type, and cancer stage. RESULTS: A total of 7008 patients (3036 women [43.3%]; mean [SD] age, 68.2 [11.2] years) were matched to 7008 (3044 women [43.4%]; mean [SD] age, 68.3 [11.1] years) controls. Pruritus (hazard ratio [HR], 0.695; 95% CI, 0.602-0.803; P < .001), drug eruption (HR, 0.755; 95% CI, 0.635-0.897; P = .001), xerosis (HR, 0.626; 95% CI, 0.469-0.834; P = .001), nonspecific rashes (HR, 0.704; 95% CI, 0.634-0.781; P < .001), and appearance of any cirAE (HR, 0.778; 95% CI, 0.726-0.834; P < .001) were significantly protective of mortality using a Benjamini-Hochberg correction with a significance level of .05. Additionally, psoriasis (HR, 0.703; 95% CI, 0.497-0.994; P = .045) and lichen planus/lichenoid dermatitis (HR, 0.511; 95% CI, 0.279-0.939; P = .03) were significant. Eczematous dermatitis (HR, 0.612; 95% CI, 0.314-1.195), vitiligo (HR, 0.534; 95% CI, 0.254-1.123), bullous pemphigoid (HR, 0.524; 95% CI, 0.140-1.956), and Grover disease (HR, 0.468; 95% CI, 0.115-1.898) were all associated with strong protective clinical effects. CONCLUSIONS AND RELEVANCE: The results of this cohort study suggest that the development of cirAEs is strongly associated with response to ICI therapy and patient survival.

A comprehensive review of DOACs for cancer associated VTE prophylaxis or treatment.

Cancer is a leading cause of venous thromboembolism (VTE), which contributes to significant morbidity and mortality in these patients. Increased thrombotic risk in cancer patients is modified by tumor-specific biology, disease-directed interventions, and individual comorbidities. Risk stratification for prophylaxis and treatment requires regular reevaluation of these factors, which can be facilitated by validated prediction tools. This review also discusses large clinical trial data (SELECT-D, HOKUSAI-VTE, ADAM VTE, CARAVAGGIO) demonstrating that direct oral anticoagulants (DOACs) are effective in the treatment of cancer-associated VTE, with comparable efficacy to the traditional choice of low molecular weight heparin. In the prophylactic setting derived from patients with cancer with increased VTE risk, DOACs also reduced the incidence of VTE with only modest increases in bleeding risk. The ease of DOAC administration and acceptable risk profile in the carefully selected patient make them an appealing choice for anticoagulation. In instances where the risk of gastrointestinal bleeding is of concern, apixaban, in particular, may still be a suitable option in place of LMWH. These improvements in our anticoagulation approach to cancer-associated VTE are well-timed to accompany the recent advances in disease-directed therapies that are enabling patients to live longer with cancer and therefore at increased risk of complications such as VTE.

RSK inhibitor BI-D1870 inhibits acute myeloid leukemia cell proliferation by targeting mitotic exit.

The 90 kDa Ribosomal S6 Kinase (RSK) drives cell proliferation and survival in cancers, although its oncogenic mechanism has not been well characterized. Phosphorylated level of RSK (T573) was increased in acute myeloid leukemia (AML) patients and associated with poor survival. To examine the role of RSK in AML, we analyzed apoptosis and the cell cycle profile following treatment with BI-D1870, a potent inhibitor of RSK. BI-D1870 treatment increased the G2/M population and induced apoptosis in AML cell lines and patient AML cells. Characterization of mitotic phases showed that the metaphase/anaphase transition was significantly inhibited by BI-D1870. BI-D1870 treatment impeded the association of activator CDC20 with APC/C, but increased binding of inhibitor MAD2 to CDC20, preventing mitotic exit. Moreover, the inactivation of spindle assembly checkpoint or MAD2 knockdown released cells from BI-D1870-induced metaphase arrest. Therefore, we investigated whether BI-D1870 potentiates the anti-leukemic activity of vincristine by targeting mitotic exit. Combination treatment of BI-D1870 and vincristine synergistically increased mitotic arrest and apoptosis in acute leukemia cells. These data show that BI-D1870 induces apoptosis of AML cells alone and in combination with vincristine through blocking mitotic exit, providing a novel approach to overcoming vincristine resistance in AML cells.

Small molecule screen for inhibitors of expression from canonical CREB response element-containing promoters.

The transcription factor CREB (cAMP Response Element Binding Protein) is an important determinant in the growth of Acute Myeloid Leukemia (AML) cells. CREB overexpression increases AML cell growth by driving the expression of key regulators of apoptosis and the cell cycle. Conversely, CREB knockdown inhibits proliferation and survival of AML cells but not normal hematopoietic cells. Thus, CREB represents a promising drug target for the treatment of AML, which carries a poor prognosis. In this study, we performed a high-throughput small molecule screen to identify compounds that disrupt CREB function in AML cells. We screened ~114,000 candidate compounds from Stanford University's small molecule library, and identified 5 molecules that inhibit CREB function at micromolar concentrations, but are non-toxic to normal hematopoietic cells. This study suggests that targeting CREB function using small molecules could provide alternative approaches to treat AML.