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Background: The effects of nirmatrelvir/ritonavir (NMV/r [Paxlovid]) on coronavirus disease 2019 (COVID-19) outcomes in younger vaccinated adults are unclear. The objective of this study was to assess if NMV/r use in vaccinated adults aged ≤50 years is associated with improved outcomes and to identify beneficial and nonbeneficial subgroups., Methods: In this cohort study, we generated 2 propensity-matched cohorts of 2547 patients from an 86 119-person cohort assembled from the TriNetX database. Patients in 1 cohort received NMV/r, and patients in the matched control cohort did not. The main outcome was composite of all-cause emergency department visits, hospitalization, and mortality., Results: The composite outcome was detected in 4.9% of the NMV/r cohort and 7.0% of the non-NMV/r cohort (odds ratio, 0.683 [95% confidence interval, .540-.864]; P = .001), indicating a 30% relative risk reduction. The number needed to treat (NNT) for the primary outcome was 47. Subgroup analyses found significant associations for patients with cancer (NNT = 45), cardiovascular disease (NNT = 30), and both conditions (NNT = 16). No benefit was found for patients with only chronic lower respiratory disorders (asthma/chronic obstructive pulmonary disease [COPD]) or without serious comorbidities. Thirty-two percent of NMV/r prescriptions in the overall database were for 18- to 50-year-olds., Conclusions: NMV/r use in vaccinated adults aged 18-50 years, especially with serious comorbidities, was associated with reduced all-cause hospital visits, hospitalization, and mortality in the first 30 days of COVID-19 illness. However, NMV/r in patients without significant comorbidities or with only asthma/COPD had no association of benefit. Therefore, identifying high-risk patients should be a priority and overprescription should be avoided., Competing Interests: Potential conflicts of interest. The authors: No reported conflicts of interest. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed., (© The Author(s) 2023. Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Psychosocial risk factors (PSRFs) are known to be associated with worse cardiovascular (CV) outcomes. However, there are limited data on the impact of PSRFs on readmissions after acute myocardial infarction (AMI) before and during the COVID-19 (Coronavirus Disease 2019) pandemic. Therefore, we aimed to examine this association and whether the effects of PSRFs were amplified during the COVID-19 pandemic. We queried the 2019 and 2020 Nationwide Readmissions Database for adult (age ≥18 years) index admissions with AMI as the primary diagnosis. They were then divided into 2 cohorts based on the presence or absence of ≥1 PSRF and compared across non-COVID-19 (2019) and COVID-19 (2020) time periods. The primary outcome was 30-day all-cause readmissions. Secondary outcomes included cause-specific readmissions (cardiac, noncardiac, AMI, heart failure). Multivariable hierarchical logistic regression was conducted to evaluate differences in outcomes. The study included 380,820 patients with index AMI, of which 214,384 (56%) had ≥1 PSRFs. Patients with PSRFs were younger, more likely to be female, and had a higher prevalence of CV risk factors. Of 30-day all-cause readmissions were higher in patients with PSRFs in both eras. Moreover, noncardiac and heart failure readmissions were also higher in patients with PSRFs admitted with AMI in 2019 and 2020. This study of a nationally representative population magnifies the association of PSRF with more unplanned readmissions after AMI in both pre-COVID-19 and COVID-19 times., Competing Interests: Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Dr. Desai reports working under contract with the Centers for Medicare and Medicaid Services to develop and maintain performance measures used for public reporting and pay for performance programs. He reports research grants and/or consulting for Amgen, Astra Zeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Cytokinetics, Merck, Novartis, SCPharmaceuticals, and Vifor. All other authors have nothing to disclose., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Psychosocial risk factors (PSRFs) have emerged as crucial nontraditional risk factors affecting outcomes in patients with heart failure (HF). There is a paucity of data studying these risk factors in HF nationally. Additionally, whether the COVID-19 pandemic impacted outcomes remains unexplored, given the increased psychosocial risk during these times. Our objective is to assess the impact of PSRFs on the outcomes of HF and their comparison across non-COVID-19 and COVID-19 eras. Patients with a diagnosis of HF were selected using the 2019-2020 Nationwide Readmissions Database. Two cohorts were created based on the presence or absence of PSRFs and compared across non-COVID-19 and COVID-19 eras. We examined the association using hierarchical multivariable logistic regression models. A total of 305,955 patients were included, of which 175,348 (57%) had PSRFs. Patients with PSRFs were younger, less likely to be female, and had a higher prevalence of cardiovascular risk factors. All-cause readmissions were higher in patients with PSRFs in both the eras. All-cause mortality [odds ratio, OR 1.15 (1.04-1.27), P = 0.005] and composite of MACE [OR 1.11 (1.06-1.16), P < 0.001] were higher in patients in the non-COVID-19 era. Compared to 2019, patients with PSRFs and HF in 2020 had significantly higher all-cause mortality [OR 1.13 (1.03-1.24), P = 0.009]; however, the composite of MACE was comparable [OR 1.04 (1.00-1.09), P = 0.03]. In conclusion, the presence of PSRFs in patients with HF is associated with a significant increase in all-cause readmissions in COVID-19 and non-COVID-19 eras. The worse outcomes evident in the COVID-19 era highlights the importance of multidisciplinary care in this vulnerable population., Competing Interests: Declaration of Competing Interest None., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Background: Treatment of coronavirus disease 2019 (COVID-19) with nirmatrelvir plus ritonavir (NMV-r) in high-risk nonhospitalized unvaccinated patients reduced the risk of progression to severe disease. However, the potential benefits of NMV-r among vaccinated patients are unclear., Methods: We conducted a comparative retrospective cohort study using the TriNetX research network. Patients ≥18 years of age who were vaccinated and subsequently developed COVID-19 between 1 December 2021 and 18 April 2022 were included. Cohorts were developed based on the use of NMV-r within 5 days of diagnosis. The primary composite outcome was all-cause emergency room (ER) visit, hospitalization, or death at a 30-day follow-up. Secondary outcomes included individual components of primary outcomes, multisystem symptoms, COVID-19-associated complications, and diagnostic test utilization., Results: After propensity score matching, 1130 patients remained in each cohort. A primary composite outcome of all-cause ER visits, hospitalization, or death in 30 days occurred in 89 (7.87%) patients in the NMV-r cohort compared with 163 (14.4%) patients in the non-NMV-r cohort (odds ratio: .5; 95% confidence interval: .39-.67; P < .005) consistent with 45% relative risk reduction. A significant reduction in multisystem symptom burden and subsequent complications, such as lower respiratory tract infection, cardiac arrhythmia, and diagnostic radiology testing, were noted in NMV-r-treated patients. There was no apparent increase in serious complications between days 10 and 30., Conclusions: Treatment with NMV-r in nonhospitalized vaccinated patients with COVID-19 was associated with a reduced likelihood of ER visits, hospitalization, or death. Complications and overall resource utilization were also decreased., Competing Interests: Potential conflicts of interest. G. M. A. reports payment for expert testimony (10 000/year) and is the immediate Past-President of the American College of Physicians. R. M. W. reports that he is a member of the Lucian Leape Institute of the Institute for Healthcare Improvement (no compensation except for travel expenses); receives a yearly stipend for serving on the Board of Directors of The Doctors Company; serves on the Board of Directors of Second Wave Delivery Solution (for which he receives stock options) and the scientific advisory boards for Teladoc, a large telemedicine provider (ended 2021), Amino.com, Curai Health, and EarlySense (stock options); consults with Commure (stipend and stock options), Forward (stock options), and Notable (stock options); received honoraria as a speaker at conferences for many (>150) healthcare organizations, medical societies, hospitals (vast majority are nonprofit; for-profit entities since 2017 include Nuance, GE, Health Catalyst, AvaCare, Siemens, and Voalte); has given more than 200 talks (a few to for-profit entities including Nuance, GE, Health Catalyst, Siemens, AvaCare, and the Governance Institute) for which he has received honoraria; and holds the Benioff Endowed Chair in Hospital Medicine from Marc and Lynne Benioff and the Holly Smith Distinguished Professorship in Science and Medicine at the University of California San Francisco (UCSF). All other authors report no potential conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed., (© The Author(s) 2022. Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Nirmatrelvir-ritonavir (NMVr) is used to treat symptomatic, nonhospitalized patients with coronavirus disease-2019 (COVID-19) who are at high risk of progression to severe disease. Patients with cardiovascular risk factors and cardiovascular disease are at a high risk of developing adverse events from COVID-19 and as a result have a higher likelihood of receiving NMVr. Ritonavir, the pharmaceutical enhancer used in NMVr, is an inhibitor of the enzymes of CYP450 pathway, particularly CYP3A4 and to a lesser degree CYP2D6, and affects the P-glycoprotein pump. Co-administration of NMVr with medications commonly used to manage cardiovascular conditions can potentially cause significant drug-drug interactions and may lead to severe adverse effects. It is crucial to be aware of such interactions and take appropriate measures to avoid them. In this review, we discuss potential drug-drug interactions between NMVr and commonly used cardiovascular medications based on their pharmacokinetics and pharmacodynamic properties., Competing Interests: Funding Support and Author Disclosures The authors have reported that they have no relationships relevant to the contents of this paper to disclose., (Copyright © 2022 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.)

Purpose: Patients with cancer are at increased risk of severe COVID-19 disease, but have heterogeneous presentations and outcomes. Decision-making tools for hospital admission, severity prediction, and increased monitoring for early intervention are critical. We sought to identify features of COVID-19 disease in patients with cancer predicting severe disease and build a decision support online tool, COVID-19 Risk in Oncology Evaluation Tool (CORONET)., Methods: Patients with active cancer (stage I-IV) and laboratory-confirmed COVID-19 disease presenting to hospitals worldwide were included. Discharge (within 24 hours), admission (≥ 24 hours inpatient), oxygen (O 2 ) requirement, and death were combined in a 0-3 point severity scale. Association of features with outcomes were investigated using Lasso regression and Random Forest combined with Shapley Additive Explanations. The CORONET model was then examined in the entire cohort to build an online CORONET decision support tool. Admission and severe disease thresholds were established through pragmatically defined cost functions. Finally, the CORONET model was validated on an external cohort., Results: The model development data set comprised 920 patients, with median age 70 (range 5-99) years, 56% males, 44% females, and 81% solid versus 19% hematologic cancers. In derivation, Random Forest demonstrated superior performance over Lasso with lower mean squared error (0.801 v 0.807) and was selected for development. During validation (n = 282 patients), the performance of CORONET varied depending on the country cohort. CORONET cutoffs for admission and mortality of 1.0 and 2.3 were established. The CORONET decision support tool recommended admission for 95% of patients eventually requiring oxygen and 97% of those who died (94% and 98% in validation, respectively). The specificity for mortality prediction was 92% and 83% in derivation and validation, respectively. Shapley Additive Explanations revealed that National Early Warning Score 2, C-reactive protein, and albumin were the most important features contributing to COVID-19 severity prediction in patients with cancer at time of hospital presentation., Conclusion: CORONET, a decision support tool validated in health care systems worldwide, can aid admission decisions and predict COVID-19 severity in patients with cancer., Competing Interests: Rebecca J. LeeSpeakers' Bureau: AstraZenecaResearch Funding: Bristol Myers Squibb (Inst), AstraZeneca/MedImmune (Inst) Rohan ShottonHonoraria: ServierTravel, Accommodations, Expenses: Servier Laurence AlbigesConsulting or Advisory Role: Bristol Myers Squibb (Inst), Ipsen (Inst), Roche (Inst), Novartis (Inst), Pfizer (Inst), Astellas Pharma (Inst), Merck (Inst), MSD (Inst), AstraZeneca (Inst), Janssen (Inst), Eisai (Inst), Corvus Pharmaceuticals (Inst), Bellerophon Therapeutics (Inst)Research Funding: Bristol Myers Squibb (Inst)Travel, Accommodations, Expenses: BMS, MSD Dirk ArnoldEmployment: Asklepios KlinikenHonoraria: Bayer, Merck Serono, Roche/Genentech, Servier, Bristol Myers Squibb, Merck Sharp and Dome, AstraZeneca, Amgen, Boston Scientific, Pierre Fabre, IpsenConsulting or Advisory Role: Bayer, Merck Serono, Biocompatibles, Terumo, Bristol Myers Squibb, MSD Oncology, AstraZenecaResearch Funding: Roche/Genentech (Inst), Sanofi (Inst), Oncolytics (Inst)Travel, Accommodations, Expenses: Boston ScientificUncompensated Relationships: ESMO Council, ESMO Journals (Ann Oncol, ESMO Open), German Society for Hematology and Medical Oncology, German Cancer Society, European Organisation for Research and Treatment of Cancer (EORTC) Kathryn BanfillStock and Other Ownership Interests: Roche (I)Honoraria: AstraZeneca Mark BaxterHonoraria: IpsenTravel, Accommodations, Expenses: Ipsen Fabrice BarlesiHonoraria: Genentech/Roche, Pfizer, Pierre Fabre, AstraZeneca, Bristol Myers Squibb, Boehringer Ingelheim, Lilly, Novartis, Merck Serono, MSD Oncology, Takeda, Bayer, Seattle Genetics, Mirati TherapeuticsConsulting or Advisory Role: Roche/Genentech, Pfizer, Novartis, Pierre Fabre, Bristol Myers Squibb, AstraZeneca/MedImmune, Boehringer Ingelheim, Lilly, Merck Serono, MSD Oncology, Takeda, Bayer, Mirati TherapeuticsResearch Funding: Roche/Genentech (Inst), AstraZeneca/MedImmune (Inst), Bristol Myers Squibb (Inst), Pierre Fabre (Inst), AbbVie (Inst), Amgen (Inst), Bayer (Inst), Boehringer Ingelheim (Inst), Eisai (Inst), Lilly (Inst), Ipsen (Inst), Innate Pharma (Inst), Novartis (Inst), Merck Serono (Inst), MSD Oncology (Inst), Pfizer (Inst), Sanofi/Aventis (Inst), Takeda (Inst)Travel, Accommodations, Expenses: Roche/Genentech, Bristol Myers Squibb, AstraZeneca/MedImmune, MSD Oncology Benjamin BesseResearch Funding: AstraZeneca (Inst), Pfizer (Inst), Lilly (Inst), Onxeo (Inst), Inivata (Inst), AbbVie (Inst), Amgen (Inst), Blueprint Medicines (Inst), Celgene (Inst), GlaxoSmithKline (Inst), Sanofi (Inst), Takeda (Inst), Cristal Therapeutics (Inst), Daiichi Sankyo (Inst), Janssen Oncology (Inst), OSE Immunotherapeutics (Inst), BeiGene (Inst), Boehringer Ingelheim (Inst), Roche/Genentech (Inst), Tolero Pharmaceuticals (Inst), 4D Pharma (Inst), Aptitude Health (Inst), Cergentis (Inst), Chugai Pharma (Inst), Genzyme (Inst), Ipsen (Inst), Turning Point Therapeutics (Inst), Eisai (Inst) Antonio CallesHonoraria: AstraZeneca, Boehringer Ingelheim, Pfizer, Roche/Genentech, Lilly, Novartis, Merck Sharp & Dohme, Bristol Myers Squibb, Amgen, Bayer, Takeda, Sanofi/RegeneronConsulting or Advisory Role: Boehringer Ingelheim, Roche/Genentech, Lilly, Merck Sharp & Dohme, Novartis, Pfizer, Bristol Myers Squibb, Takeda, Igen Biotech, Sanofi/RegeneronResearch Funding: MSD Oncology Ellen CopsonHonoraria: Roche, Pfizer, AstraZeneca, Lilly, NovartisConsulting or Advisory Role: Lilly, NanoString Technologies, Pfizer, Sanofi/Aventis, RocheSpeakers' Bureau: Roche, Pfizer, AstraZeneca, Sanofi/AventisResearch Funding: SECA, AstraZeneca (Inst)Travel, Accommodations, Expenses: Roche, AstraZeneca Adina E. CroitoruConsulting or Advisory Role: Ipsen, Pfizer, MSD OncologyResearch Funding: Bristol Myers Squibb (Inst), Amgen (Inst), Astellas Pharma (Inst), Exelixis (Inst), Merck (Inst), Merck KGaA (Inst)Travel, Accommodations, Expenses: Merck, ServierUncompensated Relationships: Lilly, Roche, Bayer, Pfizer, Sanofi Leonie EastlakeTravel, Accommodations, Expenses: Servier Paul FitzpatrickStock and Other Ownership Interests: AstraZeneca/MedImmuneResearch Funding: AstraZeneca/MedImmune (Inst)Other Relationship: Pistoia Alliance, EHDEN IMI project Henrik FrederiksenResearch Funding: AbbVie (Inst), Gilead Sciences (Inst), Sanofi (Inst) Hannah FrostResearch Funding: AstraZeneca (Inst) Sarju GanatraExpert Testimony: Haymarket Medical EducationTravel, Accommodations, Expenses: Haymarket Medical Education Andreas GlenthøjHonoraria: Novo NordiskConsulting or Advisory Role: Novartis, Celgene/Bristol Myers Squibb, Bluebird Bio, Sanofi, Novo Nordisk, AgiosResearch Funding: Sanofi, Saniona A/STravel, Accommodations, Expenses: Agios Fabio GomesHonoraria: AstraZeneca, Merck Serono, Roche Donna M. GrahamConsulting or Advisory Role: Clinigen GroupSpeakers' Bureau: Cancer Drug Development ForumResearch Funding: Pfizer (Inst) Kevin HarringtonHonoraria: Arch Oncology (Inst), AstraZeneca (Inst), BMS (Inst), Boehringer Ingelheim (Inst), Merck Serono (Inst), MSD (Inst), Oncolys BioPharma (Inst), Pfizer (Inst), Replimune (Inst), Inzen Therapeutics (Inst), Codiak Biosciences (Inst)Consulting or Advisory Role: Arch Oncology (Inst), AstraZeneca (Inst), BMS (Inst), Boehringer Ingelheim (Inst), Merck Serono (Inst), MSD (Inst), Oncolys BioPharma (Inst), Replimune (Inst), Inzen Therapeutics (Inst)Speakers' Bureau: BMS (Inst), Merck Serono (Inst), MSD (Inst)Research Funding: AstraZeneca (Inst), Merck Sharp & Dohme (Inst), Replimune (Inst), Boehringer Ingelheim (Inst) Lasse H. JakobsenHonoraria: Takeda, Roche Khurum KhanHonoraria: ServierConsulting or Advisory Role: Bayer Health Christophe MassardConsulting or Advisory Role: Amgen, Astellas Pharma, AstraZeneca, Bayer, BeiGene, BMS, Celgene, Debiopharm Group, Genentech/Roche, Ipsen, Janssen, Lilly, MSD, Novartis, Pfizer, Sanofi, ORION, Taiho Pharmaceutical, Blueprint Medicines, Innate Pharma, PharmaMar, Faron Pharmaceuticals Olivier MichielinConsulting or Advisory Role: Bristol Myers Squibb, MSD, Novartis, Roche, Amgen, Pierre FabreResearch Funding: MSD, Bristol Myers Squibb, NeraCare GmbHExpert Testimony: Bristol Myers SquibbTravel, Accommodations, Expenses: Bristol Myers Squibb, MSD Anne C. MosenthalHonoraria: Springer Nature Berta ObispoHonoraria: Sanofi, Lilly, Angelini, LEO Pharma, RoviConsulting or Advisory Role: Rovi George PentheroudakisHonoraria: Roche, Amgen, Bristol Myers Squibb, MSD, MerckConsulting or Advisory Role: Roche, AmgenResearch Funding: Roche (Inst), Amgen (Inst), Bristol Myers Squibb (Inst), Merck (Inst), AstraZeneca (Inst), Novartis (Inst), Pfizer (Inst)Travel, Accommodations, Expenses: Sanofi, MSD, Roche, Amgen, BMS Solange PetersHonoraria: Roche (Inst), Bristol Myers Squibb (Inst), Novartis (Inst), Pfizer (Inst), MSD (Inst), AstraZeneca (Inst), Takeda (Inst), Illumina (Inst), Medscape (Inst), Prime Oncology (Inst), RMEI Medical Education (Inst), Research to Practice (Inst), PER (Inst), Imedex (Inst), ecancer (Inst)Consulting or Advisory Role: Roche/Genentech (Inst), Novartis (Inst), Bristol Myers Squibb (Inst), Pfizer (Inst), MSD (Inst), Amgen (Inst), AstraZeneca (Inst), Janssen (Inst), Regeneron (Inst), Merck Serono (Inst), Boehringer Ingelheim (Inst), Takeda (Inst), Lilly (Inst), AbbVie (Inst), Bayer (Inst), Biocartis (Inst), Debiopharm Group (Inst), Illumina (Inst), PharmaMar (Inst), Sanofi (Inst), Seattle Genetics (Inst), Blueprint Medicines (Inst), Daiichi Sankyo (Inst), Incyte (Inst), Bioinvent (Inst), Clovis Oncology (Inst), Vaccibody (Inst), Phosplatin Therapeutics (Inst), Foundation Medicine (Inst)Research Funding: Roche (Inst), BMS (Inst), MSD (Inst), Amgen (Inst), Lilly (Inst), AstraZeneca (Inst), Pfizer (Inst), Illumina (Inst), Merck Serono (Inst), Novartis (Inst), Biodesix (Inst), Boehringer Ingelheim (Inst), Iovance Biotherapeutics (Inst), Phosplatin Therapeutics (Inst)Travel, Accommodations, Expenses: Roche, Bristol Myers Squibb, MSD, Sanofi, IncyteUncompensated Relationships: Journal of Thoracic Oncology, ESMO, European Thoracic Oncology Platform (ETOP), Annals of Oncology (I) Kimberly Rieger-ChristResearch Funding: Veracyte, Ravel, Grail, Exact Sciences, Nucleix Timothy RobinsonTravel, Accommodations, Expenses: Daiichi Sankyo/Lilly Emanuela RomanoConsulting or Advisory Role: AstraZeneca/MedImmune (Inst), Bristol Myers Squibb (Inst), Roche/Genentech (Inst)Research Funding: Bristol Myers Squibb, AmgenTravel, Accommodations, Expenses: AstraZeneca/MedImmune, Bristol Myers Squibb, Roche Michael RoweHonoraria: MSDSpeakers' Bureau: ServierTravel, Accommodations, Expenses: Astellas Pharma Anne ThomasConsulting or Advisory Role: BMSSpeakers' Bureau: Bristol Myers SquibbExpert Testimony: BMS Lance TurtleSpeakers' Bureau: Eisai (Inst) David ViñalSpeakers' Bureau: ServierTravel, Accommodations, Expenses: Merck Caroline WilsonConsulting or Advisory Role: Roche, Pfizer Carlo PalmieriHonoraria: PfizerConsulting or Advisory Role: Pfizer, Daiichi-Sankyo, Lilly, Novartis, Seattle GeneticsResearch Funding: Pfizer, Daiichi-SankyoTravel, Accommodations, Expenses: Roche Donal LandersEmployment: AstraZeneca, AthenexLeadership: DeLondra OncologyStock and Other Ownership Interests: DeLondra OncologyResearch Funding: AstraZeneca (Inst) Timothy CooksleyHonoraria: Bristol Myers Squibb Foundation Caroline DiveConsulting or Advisory Role: Biocartis, Merck, AstraZeneca, GRAIL, Boehringer IngelheimResearch Funding: AstraZeneca, Astex Pharmaceuticals, Bioven, Amgen, Carrick Therapeutics, Merck, Taiho Oncology, GlaxoSmithKline, Bayer, Boehringer Ingelheim, Roche, BMS, Novartis, Celgene, Epigene Therapeutics, Angle, Menarini, Clearbridge Biomedics, Thermo Fisher Scientific, NeoMed André FreitasResearch Funding: AstraZeneca (Inst) Anne C. ArmstrongStock and Other Ownership Interests: AstraZeneca (I)Consulting or Advisory Role: Gilead Sciences, MSDResearch Funding: AstraZeneca/MedImmune (Inst)Travel, Accommodations, Expenses: Gilead Sciences, MSD OncologyNo other potential conflicts of interest were reported.

Background: AKI is a significant complication of coronavirus disease 2019 (COVID-19), with no effective therapy. Niacinamide, a vitamin B3 analogue, has some evidence of efficacy in non-COVID-19-related AKI. The objective of this study is to evaluate the association between niacinamide therapy and outcomes in patients with COVID-19-related AKI., Methods: We implemented a quasi-experimental design with nonrandom, prospective allocation of niacinamide in 201 hospitalized adult patients, excluding those with baseline eGFR <15 ml/min per 1.73 m 2 on or off dialysis, with COVID-19-related AKI by Kidney Disease Improving Global Outcomes (KDIGO) criteria, in two hospitals with identical COVID-19 care algorithms, one of which additionally implemented treatment with niacinamide for COVID-19-related AKI. Patients on the niacinamide protocol (B3 patients) were compared against patients at the same institution before protocol commencement and contemporaneous patients at the non-niacinamide hospital (collectively, non-B3 patients). The primary outcome was a composite of death or RRT., Results: A total of 38 out of 90 B3 patients and 62 out of 111 non-B3 patients died or received RRT. Using multivariable Cox proportional hazard modeling, niacinamide was associated with a lower risk of RRT or death (HR, 0.64; 95% CI, 0.40 to 1.00; P =0.05), an association driven by patients with KDIGO stage-2/3 AKI (HR, 0.29; 95% CI, 0.13 to 0.65; P =0.03; P interaction with KDIGO stage=0.03). Total mortality also followed this pattern (HR, 0.17; 95% CI, 0.05 to 0.52; in patients with KDIGO stage-2/3 AKI, P =0.002). Serum creatinine after AKI increased by 0.20 (SEM, 0.08) mg/dl per day among non-B3 patients with KDIGO stage-2/3 AKI, but was stable among comparable B3 patients (+0.01 [SEM, 0.06] mg/dl per day; P interaction=0.03)., Conclusions: Niacinamide was associated with lower risk of RRT/death and improved creatinine trajectory among patients with severe COVID-19-related AKI. Larger randomized studies are necessary to establish a causal relationship., Competing Interests: A. Asnani reports being a scientific advisor or members of Sarnoff Cardiovascular Research Foundation, and receiving honoraria from UpToDate. R.S. Brown received royalties from Börm Bruckmeier Publishing LLC for a book and two applications, Nephrology Pocket and Acid Base and Electrolytes, on smartphones, with the second edition of Nephrology Pocket to be published by Elsevier, Inc. In R.S. Brown’s role at Harvard Medical Faculty Physicians (HMFP) at Beth Israel Deaconess Medical Center, he serves as an associate medical director of DaVita Dialysis Center (Brookline, MA). All income paid by this facility goes directly to HMFP, from which he receives a fixed salary. He also reports receiving honoraria from Harvard Medical School Department of Continuing Education, Beth Israel Deaconess Medical Center; having ownership interest in Innovative Wellness Systems, Inc.; being a member of the medical advisory board of the National Kidney Foundation of New England; and being on the board of directors and president of The Organization for Renal Care in Haiti (TORCH) Inc., a nonprofit, charitable corporation in Massachusetts. No income is received from any of these entities. K. Mukamal reports having other interests/relationships with US Highbush Blueberry Council and Wolters Kluwer. S.M. Parikh is listed as an inventor on patent filings from Beth Israel Deaconess Medical Center related to NAD+. S.M. Parikh reports having consultancy agreements with Aerpio, Alkermes, Astellas, Cytokinetics, Hope Pharmaceuticals, Janssen, Leerink Swann, Mission Therapeutics, and Mitobridge; being a scientific advisor for or member of Aerpio, JASN, Kidney360, and Raksana; receiving consulting fees in the last 3 years from Alkermes, Astellas, Cytokinetics, Daiichi Sankyo, Janssen, and Mission Therapeutics; receiving honoraria from American Society of Nephrology; receiving research funding from Baxter; and having ownership interest in Eunoia and Raksana. Work in S.M. Parikh’s laboratory is supported by National Heart, Lung, and Blood Institute grant R35-HL139424, National Institute of Diabetes and Digestive and Kidney Diseases grant R01-DK095072, and National Institute on Aging grant R01-AG027002. A. Poyan Mehr reports receiving research funding from ASN Carl W. Gottschalk Research Scholar Grant (2018) and Retrophin; being the site principle investigator for the DUPLEX Study (a phase-3 randomized trial in primary FSGS); having industry-sponsored clinical trial agreements with OMEROS, Roche, and Vertex; being the director of the GlomCon Project, an initiative to enhance education about glomerular disorders. This project is collaborating closely with the NephCure Foundation, which has provided financial and in-kind support for a continuing medical education–accredited conference series focused on clinical trials. A. Poyan Mehr has additional educational collaborations with the Renal Pathology Society and the European Renal Association. A. Poyan Mehr’s employer does not permit serving on any speaker bureau, advisory board, perform consultancy, or receive industry honoraria. N.H. Raines reports being a scientific advisor for or member of La Isla Network. J. Schlondorff reports being a scientific advisor for or member of the Alport Syndrome Foundation Medical Advisory Committee and having patents and inventions with Partners Healthcare. T.I. Steinman reports being a reviewer for CJASN and a member of the editorial board for Nephrology News and Issues; receiving research funding from Kadmon, Reata, and Retrophin; receiving honoraria from Mallinkrodt and Otsuka; being on the medical advisory board for the National Kidney Foundation of Massachusetts, Rhode Island, New Hampshire, and Vermont; and having other interests/relationships with National Kidney Foundation and Polycystic Kidney Foundation. M.L. Zeidel reports being a scientific advisor for or member of the Beth Israel Deaconess Medical Center and Hebrew Senior Life. All remaining authors have nothing to disclose., (Copyright © 2021 by the American Society of Nephrology.)

Purpose of review: Contemporary anticancer immunotherapy, particularly immune checkpoint inhibitors (ICI) and chimeric antigen receptor (CAR) T cell therapy, has changed the landscape of treatment for patients with a variety of malignancies who historically had a poor prognosis. However, both immune checkpoint inhibitors and CAR T cell therapy are associated with serious cardiovascular adverse effects. As immunotherapy evolves to include high-risk patients with preexisting cardiovascular risk factors and disease, the risk and relevance of its associated cardiotoxicity will be even higher. Recent findings: ICI can cause myocarditis, which usually occurs early after initiation, can be fulminant, and prompt treatment with high-dose corticosteroids is crucial. CAR T cell therapy frequently leads to cytokine release syndrome, which is associated with cardiomyopathy or arrhythmia development and may also result in circulatory collapse. Supportive treatment, as well as tocilizumab, an anti-interleukin-6 receptor antibody, is the cornerstone of treatment. Recent findings suggest that preexisting cardiovascular risk factors and disease may increase the risk of such cardiotoxicity, and prompt recognition, as well as treatment, may favorably alter the outcomes. Summary: ICI and CAR T cell therapy have improved cancer-related outcomes; however, they both are associated with potentially therapy-limiting cardiotoxicity. Cardio-oncologists are required to play an important role in patient selection, pretherapy cardiovascular optimization, and prompt recognition and treatment of cardiotoxicity. [ABSTRACT FROM AUTHOR]