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- Volume 74, 2023
Annual Review of Medicine - Volume 74, 2023
Volume 74, 2023
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COVID-19 and Kidney Disease
Vol. 74 (2023), pp. 1–13More LessCOVID-19 can cause acute kidney injury and may cause or exacerbate chronic kidney diseases, including glomerular diseases. SARS-CoV-2 infection of kidney cells has been reported, but it remains unclear if viral infection of kidney cells causes disease. The most important causes of kidney injury in patients with COVID-19 include impaired renal perfusion and immune dysregulation. Chronic kidney disease, especially kidney failure with kidney replacement therapy and kidney transplant, is associated with markedly increased COVID-19 mortality. Persons with severe kidney disease have been excluded from most clinical trials of COVID-19 therapies, so therapeutic approaches must be extrapolated from studies of patients without kidney disease. Some medications used to treat COVID-19 should be avoided or used at reduced dosages in patients with severe kidney disease and in kidney transplant recipients. Additional research is needed to determine the optimal strategies to prevent and treat COVID-19 in patients with kidney disease.
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COVID-19 Thrombotic Complications and Therapeutic Strategies
Vol. 74 (2023), pp. 15–30More LessShortly after the emergence of coronavirus disease 2019 (COVID-19) in late 2019, clinicians rapidly recognized an apparent association between the disease and both arterial and venous thrombotic complications, which was confirmed in epidemiologic studies. Based on these data, hospitals empirically developed and implemented protocols with different strategies for anticoagulation of hospitalized COVID-19 patients. Subsequent randomized controlled trials (RCTs) clarified the role of anticoagulation in patients hospitalized with COVID-19 and recently discharged from the hospital. In this review, we discuss the epidemiology and pathophysiology of thrombosis in patients with COVID-19, observational comparative effectiveness analyses that provided hints of a benefit from anticoagulation, and finally the RCTs that established which patients with COVID-19 benefit from treatment-dose anticoagulation. These RCTs have demonstrated that hospitalized, noncritically ill patients with COVID-19 benefit from treatment-dose anticoagulation, but patients who are hospitalized and critically ill, discharged from the hospital, or not hospitalized do not benefit.
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COVID-19: Challenges of Viral Variants
Vol. 74 (2023), pp. 31–53More LessThe COVID-19 pandemic has been accompanied by SARS-CoV-2 evolution and emergence of viral variants that have far exceeded initial expectations. Five major variants of concern (Alpha, Beta, Gamma, Delta, and Omicron) have emerged, each having both unique and overlapping amino acid substitutions that have affected transmissibility, disease severity, and susceptibility to natural or vaccine-induced immune responses and monoclonal antibodies. Several of the more recent variants appear to have evolved properties of immune evasion, particularly in cases of prolonged infection. Tracking of existing variants and surveillance for new variants are critical for an effective pandemic response.
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Post-COVID-19 Condition
Vol. 74 (2023), pp. 55–64More LessAn estimated 10–15% of those infected with SARS-CoV-2 may have post-COVID-19 condition. Common lingering signs and symptoms include shortness of breath, fatigue, high heart rate, and memory and cognitive dysfunction even several months after infection, often impacting survivors’ quality of life. The prevalence and duration of individual symptoms remain difficult to ascertain due to the lack of standardized research methods across various studies and limited patient follow-up in clinical studies. Nonetheless, data indicate post-COVID-19 condition may occur independent of acuity of initial infection, hospitalization status, age, or pre-existing comorbidities. Risk factors may include female sex and underlying respiratory or psychiatric disease. Supportive therapies to mitigate symptoms remain the mainstay of treatment. Reassuringly, most patients experience a reduction in symptoms by 1 year. The use of a universal case definition and shared research methods will allow for further clarity regarding the pervasiveness of this entity and its long-term health consequences.
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SARS-CoV-2 Vaccination-Induced Thrombotic Thrombocytopenia: A Rare but Serious Immunologic Complication
Vol. 74 (2023), pp. 65–74More LessBillions of individuals worldwide have benefited from the unprecedented large-scale rollout of COVID-19 vaccines. Given the sheer number of people that have received these vaccines, it is not surprising that rare side effects are reported that were not previously detected in the phase III vaccine trials. This review addresses one rare complication called SARS-CoV-2 vaccination-induced thrombotic thrombocytopenia (VITT). It occurs in approximately 1/50,000 to 1/100,000 recipients of the adenovirus vector–based COVID-19 vaccines made by AstraZeneca-Oxford or Johnson & Johnson. Information on VITT syndrome was disseminated quickly via social media and publications after it was first discovered. Initial observations associating VITT with specific patient populations, thrombus locations, and outcomes associated with heparin therapy have since been refined with additional clinical experience. In this review, we discuss what is currently known about the incidence, pathophysiology, diagnosis, and treatment of VITT.
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Endocrine Disorders and COVID-19
Vol. 74 (2023), pp. 75–88More LessThe multifaceted interaction between coronavirus disease 2019 (COVID-19) and the endocrine system has been a major area of scientific research over the past two years. While common endocrine/metabolic disorders such as obesity and diabetes have been recognized among significant risk factors for COVID-19 severity, several endocrine organs were identified to be targeted by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). New-onset endocrine disorders related to COVID-19 were reported while long-term effects, if any, are yet to be determined. Meanwhile, the “stay home” measures during the pandemic caused interruption in the care of patients with pre-existing endocrine disorders and may have impeded the diagnosis and treatment of new ones. This review aims to outline this complex interaction between COVID-19 and endocrine disorders by synthesizing the current scientific knowledge obtained from clinical and pathophysiological studies, and to emphasize considerations for future research.
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Cytomegalovirus Therapy: Role of Letermovir in Prophylaxis and Treatment in Transplant Recipients
Vol. 74 (2023), pp. 89–105More LessCytomegalovirus (CMV) is a common viral pathogen in the transplant population and is associated with significant morbidity and mortality. CMV prevention is paramount; however, selecting the best preventive strategy depends on many factors including donor–recipient CMV serostatus, transplant-specific risks, antiviral toxicities and cost. Novel CMV therapeutics such as letermovir (LTV) are desperately needed to optimize CMV management. Uniquely among CMV antiviral therapies, LTV inhibits the viral terminase complex in the CMV DNA synthesis pathway and disrupts viral genome packaging. Further, it lacks side effects frequently associated with other CMV antiviral therapies and evades common mechanisms of resistance. LTV is approved by the US Food and Drug Administration for CMV prevention in adult CMV-seropositive hematopoietic cell transplant recipients but is increasingly applied off-label for prophylaxis and treatment. This review summarizes important concepts of CMV management in transplantation, with a specific focus on LTV pharmacology and clinical experience to date alongside future prospects for its application.
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Gender-Affirming Care of Transgender and Gender-Diverse Youth: Current Concepts
Vol. 74 (2023), pp. 107–116More LessIncreasing numbers of transgender and gender-diverse (TGD) youth, from early puberty through late adolescence, are seeking medical services to bring their physical sex characteristics into alignment with their gender identity—their inner sense of self as male or female or elsewhere on the gender spectrum. Numerous studies, primarily of short- and medium-term duration (up to 6 years), demonstrate the clearly beneficial—even lifesaving—mental health impact of gender-affirming medical care in TGD youth. However, there are significant gaps in knowledge and challenges to such care. Long-term safety and efficacy studies are needed to optimize medical care for TGD youth.
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Update in Adult Transgender Medicine
Vol. 74 (2023), pp. 117–124More LessTransgender people often face barriers in health care due to lack of access to care, lack of knowledgeable healthcare professionals, discrimination, and gaps in medical and mental health research. Existing research on transgender health has focused heavily on mental health, HIV/AIDS, sexually transmitted diseases/infections, and substance abuse. Gender-affirming hormone therapy and/or surgery allows for some alignment of biology and gender identity. Gender-affirming care may offer quality-of-life benefits, which may outweigh modest concerns related to exogenous hormone therapy. The Endocrine Society treatment guidelines were revised in 2017, and this article reviews recent data that might inform a future guideline revision. Future longitudinal research is needed to close the gap in knowledge in the field of transgender medicine.
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New Frontiers in Obesity Treatment: GLP-1 and Nascent Nutrient-Stimulated Hormone-Based Therapeutics
Vol. 74 (2023), pp. 125–139More LessNearly half of Americans are projected to have obesity by 2030, underscoring the pressing need for effective treatments. Glucagon-like peptide 1 receptor agonists (GLP-1 RAs) represent the first agents in a rapidly evolving, highly promising landscape of nascent hormone-based obesity therapeutics. With the understanding of the neurobiology of obesity rapidly expanding, these emerging entero-endocrine and endo-pancreatic agents combined or coformulated with GLP-1 RAs herald a new era of targeted, mechanism-based treatment of obesity. This article reviews GLP-1 RAs in the treatment of obesity and previews the imminent future of nutrient-stimulated hormone-based anti-obesity therapeutics.
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Advances and Applications of Polygenic Scores for Coronary Artery Disease
Vol. 74 (2023), pp. 141–154More LessPolygenic scores quantify inherited risk by integrating information from many common sites of DNA variation into a single number. Rapid increases in the scale of genetic association studies and new statistical algorithms have enabled development of polygenic scores that meaningfully measure—as early as birth—risk of coronary artery disease. These newer-generation polygenic scores identify up to 8% of the population with triple the normal risk based on genetic variation alone, and these individuals cannot be identified on the basis of family history or clinical risk factors alone. For those identified with increased genetic risk, evidence supports risk reduction with at least two interventions, adherence to a healthy lifestyle and cholesterol-lowering therapies, that can substantially reduce risk. Alongside considerable enthusiasm for the potential of polygenic risk estimation to enable a new era of preventive clinical medicine is recognition of a need for ongoing research into how best to ensure equitable performance across diverse ancestries, how and in whom to assess the scores in clinical practice, as well as randomized trials to confirm clinical utility.
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Valvular Heart Disease: New Concepts in Pathophysiology and Therapeutic Approaches
Vol. 74 (2023), pp. 155–170More LessThis review discusses recent advancements in the field of valvular heart disease. Topics covered include recognition of the impact of atrial fibrillation on development and assessment of valvular disease, strategies for global prevention of rheumatic heart disease, understanding and management of secondary mitral regurgitation, the updated classification of bicuspid aortic valve disease, recognition of heightened cardiovascular risk associated with moderate aortic stenosis, and a growing armamentarium of transcatheter therapies.
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Myocardial Infarction with Nonobstructive Coronary Arteries
Vol. 74 (2023), pp. 171–188More LessMyocardial infarction with nonobstructive coronary arteries (MINOCA) is an important subtype of myocardial infarction (MI) that occurs in approximately 6–8% of patients with spontaneous MI who are referred for coronary angiography. MINOCA disproportionately affects women, but men are also affected. Pathogenesis is more variable than in MI with obstructive coronary artery disease (MI-CAD). Dominant mechanisms include atherosclerosis, thrombosis, and coronary artery spasm. Management of MINOCA varies based on the underlying mechanism of infarction. Therefore, systematic approaches to diagnosis are recommended. The combination of invasive coronary angiography, multivessel intracoronary imaging, provocative testing for coronary spasm, and cardiac magnetic resonance imaging provides the greatest diagnostic yield. Current clinical practice guidelines for the secondary prevention of MI are based largely on data from patients with MI-CAD. Thus, optimal medications after MINOCA are uncertain. Clinical trials focused on the treatment of patients with MINOCA are urgently needed to define optimal care.
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Lessons Learned from the ISCHEMIA Trial for the Management of Patients with Stable Ischemic Heart Disease
Vol. 74 (2023), pp. 189–198More LessThe recent landmark International Study of Comparative Health Effectiveness With Medical and Invasive Approaches (ISCHEMIA) trial was undertaken to assess whether stable angina patients with moderate to severe baseline ischemia would benefit from an invasive approach with revascularization versus a conservative approach of intensive lifestyle intervention and pharmacologic secondary prevention. This trial addressed the hypothesis that treating ischemia with an invasive approach would reduce major adverse cardiac events more than a noninvasive pharmacologic and lifestyle approach. ISCHEMIA is discussed in detail, along with current implications for contemporary management of this very common cardiac disorder afflicting millions of patients worldwide.
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Maternal Mortality in the United States: Trends and Opportunities for Prevention
Vol. 74 (2023), pp. 199–216More LessMaternal mortality is unusually high in the United States compared to other wealthy nations and is characterized by major disparities in race/ethnicity, geography, and socioeconomic factors. Similar to other developed nations, the United States has seen a shift in the underlying causes of pregnancy-related death, with a relative increase in mortality resulting from diseases of the cardiovascular system and preexisting medical conditions. Improved continuity of care aimed at identifying reproductive-age women with preexisting conditions that may heighten the risk of maternal death, preconception management of risk factors for major adverse pregnancy outcomes, and primary care visits within the first year after delivery may offer opportunities to address gaps in medical care contributing to the unacceptable rates of maternal mortality in the United States.
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Primary Aldosteronism and the Role of Mineralocorticoid Receptor Antagonists for the Heart and Kidneys
Vol. 74 (2023), pp. 217–230More LessPrimary aldosteronism (PA) is the most common cause of secondary hypertension but is frequently underrecognized and undertreated. Patients with PA are at a markedly increased risk for target organ damage to the heart and kidneys. While patients with unilateral PA can be treated surgically, many patients with PA are not eligible or willing to undergo surgery. Steroidal mineralocorticoid receptor antagonists (MRAs) are highly effective for treating PA and reducing the risk of target organ damage. However, steroidal MRAs are often underprescribed and can be poorly tolerated by some patients due to side effects. Nonsteroidal MRAs reduce adverse renal and cardiovascular outcomes among patients with diabetic kidney disease and are bettertolerated than steroidal MRAs. While their blood pressure–lowering effects remain unclear, these agents may have a potential role in reducing target organ damage in patients with PA.
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Adeno-Associated Virus Gene Therapy for Hemophilia
Vol. 74 (2023), pp. 231–247More LessIn vivo gene therapy is rapidly emerging as a new therapeutic paradigm for monogenic disorders. For almost three decades, hemophilia A (HA) and hemophilia B (HB) have served as model disorders for the development of gene therapy. This effort is soon to bear fruit with completed pivotal adeno-associated viral (AAV) vector gene addition trials reporting encouraging results and regulatory approval widely anticipated in the near future for the current generation of HA and HB AAV vectors. Here we review the clinical development of AAV gene therapy for HA and HB and examine outstanding questions that have recently emerged from AAV clinical trials for hemophilia and other monogenic disorders.
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Clonal Hematopoiesis and Its Impact on Human Health
Vol. 74 (2023), pp. 249–260More LessAging is associated with increased mutational burden in every tissue studied. Occasionally, fitness-increasing mutations will arise, leading to stem cell clonal expansion. This process occurs in several tissues but has been best studied in blood. Clonal hematopoiesis is associated with an increased risk of blood cancers, such as acute myeloid leukemia, which result if additional cooperating mutations occur. Surprisingly, it is also associated with an increased risk of nonmalignant diseases, such as atherosclerotic cardiovascular disease. This may be due to enhanced inflammation in mutated innate immune cells, which could be targeted clinically with anti-inflammatory drugs. Recent studies have uncovered other factors that predict poor outcomes in patients with clonal hematopoiesis, such as size of the mutant clone, mutated driver genes, and epigenetic aging. Though clonality is inevitable and largely a function of time, recent work has shown that inherited genetic variation can also influence this process. Clonal hematopoiesis provides a paradigm for understanding how age-related changes in tissue stem cell composition and function influence human health.
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Hepcidin and Iron in Health and Disease
Vol. 74 (2023), pp. 261–277More LessHepcidin, the iron-regulatory hormone, determines plasma iron concentrations and total body iron content. Hepcidin, secreted by hepatocytes, functions by controlling the activity of the cellular iron exporter ferroportin, which delivers iron to plasma from intestinal iron absorption and from iron stores. Hepcidin concentration in plasma is increased by iron loading and inflammation and is suppressed by erythropoietic stimulation and during pregnancy. Hepcidin deficiency causes iron overload in hemochromatosis and anemias with ineffective erythropoiesis. Hepcidin excess causes iron-restrictive anemias including anemia of inflammation. The development of hepcidin diagnostics and therapeutic agonists and antagonists should improve the treatment of iron disorders.
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Multispecific CAR T Cells Deprive Lymphomas of Escape via Antigen Loss
Vol. 74 (2023), pp. 279–291More LessChimeric antigen receptor (CAR) modified T cell therapy has transformed the management of relapsed/refractory B cell malignancies. Despite high overall response rates, relapse post CAR T treatment remains a clinical challenge. Loss of target antigen, specifically CD19, is one well-defined mechanism of disease relapse. The mechanism of CD19 loss and which patients are at higher risk of CD19 loss remain poorly understood. To overcome CD19 loss, CARs targeting multiple antigens are being tested in clinical trials. CD19/20 and CD19/22 bispecific CARs demonstrate cytotoxicity against CD19-negative cells in preclinical studies. These CARs have also shown efficacy, safety, and a relatively low rate of CD19-negative relapse in phase I trials. These small studies suggest that multispecific CAR T cells can deprive lymphomas of escape via antigen loss. However, the selection of an ideal target, the right CAR construct, and whether these multispecific CARs can induce long-term remissions are still under investigation.
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Previous Volumes
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Volume 76 (2025)
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Volume 75 (2024)
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Volume 74 (2023)
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Volume 73 (2022)
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Volume 72 (2021)
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Volume 71 (2020)
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Volume 70 (2019)
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Volume 69 (2018)
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Volume 68 (2017)
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Volume 67 (2016)
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Volume 66 (2015)
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Volume 65 (2014)
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Volume 64 (2013)
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Volume 63 (2012)
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Volume 62 (2011)
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Volume 61 (2010)
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Volume 60 (2009)
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Volume 59 (2008)
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Volume 58 (2007)
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Volume 57 (2006)
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Volume 56 (2005)
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Volume 55 (2004)
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Volume 54 (2003)
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Volume 53 (2002)
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Volume 52 (2001)
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Volume 51 (2000)
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Volume 50 (1999)
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Volume 49 (1998)
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Volume 48 (1997)
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Volume 47 (1996)
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Volume 46 (1995)
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Volume 45 (1994)
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Volume 44 (1993)
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Volume 43 (1992)
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Volume 42 (1991)
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Volume 41 (1990)
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Volume 40 (1989)
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Volume 39 (1988)
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Volume 38 (1987)
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Volume 37 (1986)
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Volume 36 (1985)
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Volume 35 (1984)
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Volume 34 (1983)
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Volume 33 (1982)
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Volume 32 (1981)
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Volume 31 (1980)
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Volume 30 (1979)
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Volume 29 (1978)
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Volume 28 (1977)
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Volume 27 (1976)
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Volume 26 (1975)
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Volume 25 (1974)
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Volume 24 (1973)
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Volume 23 (1972)
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Volume 22 (1971)
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Volume 21 (1970)
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Volume 20 (1969)
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Volume 19 (1968)
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Volume 18 (1967)
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Volume 17 (1966)
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Volume 16 (1965)
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Volume 15 (1964)
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Volume 14 (1963)
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Volume 13 (1962)
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Volume 12 (1961)
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Volume 11 (1960)
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Volume 10 (1959)
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Volume 9 (1958)
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Volume 8 (1957)
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Volume 7 (1956)
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Volume 6 (1955)
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Volume 5 (1954)
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Volume 4 (1953)
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Volume 3 (1952)
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Volume 2 (1951)
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Volume 1 (1950)
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Volume 0 (1932)