Kyong–Mi Chang
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View article: Resolving SLC6A1 variable expressivity with deep clinical phenotyping and Drosophila models
Resolving SLC6A1 variable expressivity with deep clinical phenotyping and Drosophila models Open
Variants in SLC6A1 result in a rare neurodevelopmental disorder characterized by a variable clinical presentation of symptoms including developmental delay, epilepsy, motor dysfunction, and autism spectrum disorder. SLC6A1 haploinsufficien…
View article: Integrative functional genomics reveals transcriptional regulatory function of risk alleles for metabolic liver disease
Integrative functional genomics reveals transcriptional regulatory function of risk alleles for metabolic liver disease Open
Genome-wide association studies (GWAS) have identified nearly 100 loci associated with metabolic dysfunction-associated steatotic liver disease (MASLD), but the molecular functions of these variant alleles remain elusive, particularly when…
View article: Clinical validation of a statin-benefit polygenic score using real-world cohorts of primary prevention participants
Clinical validation of a statin-benefit polygenic score using real-world cohorts of primary prevention participants Open
Background Polygenic risk scores derived from coronary artery disease genome-wide association studies are associated with statin relative risk reduction. Objective Examine the relationship between coronary artery disease polygenic risk sco…
View article: Polygenic risk score for type 2 diabetes shows context-dependent effects across populations
Polygenic risk score for type 2 diabetes shows context-dependent effects across populations Open
View article: Germline Variants Influence Chronic Liver Disease Progression through Distinct Pathways
Germline Variants Influence Chronic Liver Disease Progression through Distinct Pathways Open
Cirrhosis and hepatocellular carcinoma (HCC) are long-term complications of chronic liver disease (CLD). In this large multi-ancestry genome-wide association study of all-cause cirrhosis (35,481 cases, 2.36M controls) and HCC (6,680 cases,…
View article: Genomics-informed drug-repurposing strategy identifies two therapeutic targets for preventing liver disease associated with metabolic dysfunction
Genomics-informed drug-repurposing strategy identifies two therapeutic targets for preventing liver disease associated with metabolic dysfunction Open
View article: Multi-ancestry polygenic risk scores for the prediction of type 2 diabetes and complications in diverse ancestries
Multi-ancestry polygenic risk scores for the prediction of type 2 diabetes and complications in diverse ancestries Open
Summary Background Polygenic risk scores (PRSs) improve type 2 diabetes (T2D) prediction beyond clinical risk factors but perform poorly in non-European populations, where T2D burden is often higher, undermining their global clinical utili…
View article: A genome-wide association study of hidradenitis suppurativa from the VA’s Million Veteran Program
A genome-wide association study of hidradenitis suppurativa from the VA’s Million Veteran Program Open
Background Data from family and twin studies as well as prior genome-wide association meta- analyses suggest that hidradenitis suppurativa (HS) has a hereditary component. Objective Identify genetic variants associated with HS. Methods A c…
View article: Diet composition impacts the natural history of steatotic liver disease
Diet composition impacts the natural history of steatotic liver disease Open
Background: Metabolic-associated steatotic liver disease (MASLD), caused by insulin resistance and the metabolic syndrome, may result in progressive liver fibrosis. Animal studies suggest that dietary content modulates liver fibrosis progr…
View article: <i>CYP2C19</i> Polymorphisms and Clinical Outcomes Following Percutaneous Coronary Intervention in the Million Veteran Program
<i>CYP2C19</i> Polymorphisms and Clinical Outcomes Following Percutaneous Coronary Intervention in the Million Veteran Program Open
CYP2C19 loss‐of‐function (LOF) alleles decrease the antiplatelet effect of clopidogrel following percutaneous coronary intervention (PCI) in patients presenting with acute coronary syndrome (ACS). The impact of genotype in patients undergo…
View article: Cross-ancestry and phenome-wide associations of cancer-specific polygenic risk scores
Cross-ancestry and phenome-wide associations of cancer-specific polygenic risk scores Open
Background Genome-wide association studies (GWAS) have identified many common variants associated at low effect sizes with various cancers. Summing the effects of these variants into polygenic risk scores (PRS) can improve cancer risk pred…
View article: HBV-specific T-cell function is nonenhanced by tenofovir-induced decline in HBV viremia or HBsAg titer in chronic hepatitis B
HBV-specific T-cell function is nonenhanced by tenofovir-induced decline in HBV viremia or HBsAg titer in chronic hepatitis B Open
Background: Chronic hepatitis B is associated with virus-specific and global T-cell dysfunction. We hypothesized that therapeutic reduction in serum HBV DNA, ALT, and HBsAg would restore HBV-specific T-cell function and modify T-cell regul…
View article: Peripheral blood cytokine profiles predict the severity of SARS-CoV-2 infection: an EPIC3 study analysis
Peripheral blood cytokine profiles predict the severity of SARS-CoV-2 infection: an EPIC3 study analysis Open
Background Predicting which patients will develop severe COVID-19 complications could improve clinical care. Peripheral blood cytokine profiles may predict the severity of SARS-CoV-2 infection, but none have been identified in US Veterans.…
View article: Virus-associated inflammation imprints an inflammatory profile on monocyte-derived macrophages in the human liver
Virus-associated inflammation imprints an inflammatory profile on monocyte-derived macrophages in the human liver Open
Chronic liver injury triggers the activation and recruitment of immune cells, causing antigen-independent tissue damage and liver disease progression. Tissue inflammation can reshape macrophage composition through monocyte replacement. Rep…
View article: Whole genome sequencing analysis of body mass index identifies novel African ancestry-specific risk allele
Whole genome sequencing analysis of body mass index identifies novel African ancestry-specific risk allele Open
View article: Heterogeneous effects of genetic variants and traits associated with fasting insulin on cardiometabolic outcomes
Heterogeneous effects of genetic variants and traits associated with fasting insulin on cardiometabolic outcomes Open
Elevated fasting insulin levels (FI), indicative of altered insulin secretion and sensitivity, may precede type 2 diabetes (T2D) and cardiovascular disease onset. In this study, we group FI-associated genetic variants based on their geneti…
View article: CXCL12 drives natural variation in coronary artery anatomy across diverse populations
CXCL12 drives natural variation in coronary artery anatomy across diverse populations Open
Coronary arteries have a specific branching pattern crucial for oxygenating heart muscle. Among humans, there is natural variation in coronary anatomy with respect to perfusion of the inferior/posterior left heart, which can branch from ei…
View article: Genomics-Informed Drug Repurposing Strategy Identifies Novel Therapeutic Targets for Metabolic Dysfunction-Associated Steatotic Liver Disease
Genomics-Informed Drug Repurposing Strategy Identifies Novel Therapeutic Targets for Metabolic Dysfunction-Associated Steatotic Liver Disease Open
Summary Identification of drug-repurposing targets with genetic and biological support is an economically and temporally efficient strategy for improving treatment of diseases. We employed a cross-disciplinary approach to identify potentia…
View article: Type 2 diabetes polygenic risk score demonstrates context-dependent effects and associations with type 2 diabetes-related risk factors and complications across diverse populations
Type 2 diabetes polygenic risk score demonstrates context-dependent effects and associations with type 2 diabetes-related risk factors and complications across diverse populations Open
Polygenic risk scores (PRS) hold prognostic value for identifying individuals at higher risk of type 2 diabetes (T2D). However, further characterization is needed to understand the generalizability of T2D PRS in diverse populations across …
View article: Kidney multiome-based genetic scorecard reveals convergent coding and regulatory variants
Kidney multiome-based genetic scorecard reveals convergent coding and regulatory variants Open
Kidney dysfunction is a major cause of mortality, but its genetic architecture remains elusive. In this study, we conducted a multiancestry genome-wide association study in 2.2 million individuals and identified 1026 (97 previously unknown…
View article: Tenascin-C Potentiates Wnt Signaling in Thyroid Cancer
Tenascin-C Potentiates Wnt Signaling in Thyroid Cancer Open
Tenascin-C (TNC) is a secreted extracellular matrix protein that is highly expressed during embryonic development and re-expressed during wound healing, inflammation, and neoplasia. Studies in developmental models suggest that TNC may regu…
View article: Investigation of Genomic and Transcriptomic Risk Factors of Clopidogrel Response in African Americans
Investigation of Genomic and Transcriptomic Risk Factors of Clopidogrel Response in African Americans Open
Clopidogrel, an anti‐platelet drug, is used to prevent thrombosis after percutaneous coronary intervention. Clopidogrel resistance results in recurring ischemic events, with African Americans (AA) suffering disproportionately. The aim of t…
View article: Unraveling Mechanisms of Genetic Risks in Metabolic Dysfunction–Associated Steatotic Liver Diseases: A Pathway to Precision Medicine
Unraveling Mechanisms of Genetic Risks in Metabolic Dysfunction–Associated Steatotic Liver Diseases: A Pathway to Precision Medicine Open
Metabolic dysfunction–associated steatotic liver disease (MASLD) is a growing global health problem, affecting ∼1 billion people. This condition is well established to have a heritable component with strong familial clustering. With the ex…
View article: Carriage of Rare APOB Variants Predisposes to Severe Steatotic Liver Disease and Hepatocellular Carcinoma
Carriage of Rare APOB Variants Predisposes to Severe Steatotic Liver Disease and Hepatocellular Carcinoma Open
View article: Publisher Correction: Genome-wide association study reveals mechanisms underlying dilated cardiomyopathy and myocardial resilience
Publisher Correction: Genome-wide association study reveals mechanisms underlying dilated cardiomyopathy and myocardial resilience Open
View article: Genome-wide association study reveals mechanisms underlying dilated cardiomyopathy and myocardial resilience
Genome-wide association study reveals mechanisms underlying dilated cardiomyopathy and myocardial resilience Open
View article: Tenascin-C potentiates Wnt signaling in thyroid cancer
Tenascin-C potentiates Wnt signaling in thyroid cancer Open
Tenascin-C (TNC) is a secreted extracellular matrix protein that is highly expressed during embryonic development and re-expressed during wound healing, inflammation, and neoplasia. Studies in developmental models suggest that TNC may regu…
View article: Exome wide association study for blood lipids in 1,158,017 individuals from diverse populations
Exome wide association study for blood lipids in 1,158,017 individuals from diverse populations Open
Rare coding alleles play crucial roles in the molecular diagnosis of genetic diseases. However, the systemic identification of these alleles has been challenging due to their scarcity in the general population. Here, we discovered and char…
View article: Clinical and genetic risk factors for progressive fibrosis in metabolic dysfunction–associated steatotic liver disease
Clinical and genetic risk factors for progressive fibrosis in metabolic dysfunction–associated steatotic liver disease Open
Background: Fibrosis-4 (FIB4) is a recommended noninvasive test to assess hepatic fibrosis among patients with metabolic dysfunction–associated steatotic liver disease (MASLD). Here, we used FIB4 trajectory over time (ie, “slope” of FIB4) …
View article: Non-glycemic genetic effects on HbA1c and clinical glycemic status in African ancestry: VA Million Veteran Program
Non-glycemic genetic effects on HbA1c and clinical glycemic status in African ancestry: VA Million Veteran Program Open
IMPORTANCE Clinical guidelines recommend against using glycated hemoglobin A1c (HbA1c) to assess glycemia in patients with two erythropoietic conditions: glucose-6-phosphate dehydrogenase (G6PD) deficiency or sickle cell disease. What rema…