Browsing by Author "Steenkamp, Devin W."

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    Expert Clinical Interpretation of Continuous Glucose Monitor Reports From Individuals Without Diabetes
    (Sage, 2025-02-12) Spartano, Nicole L.; Prescott, Brenton; Walker, Maura E.; Shi, Eleanor; Venkatesan, Guhan; Fei, David; Lin, Honghuang; Murabito, Joanne M.; Ahn, David; Battelino, Tadej; Edelman, Steven V.; Fleming, G. Alexander; Freckmann, Guido; Galindo, Rodolfo J.; Joubert, Michael; Lansang, M. Cecilia; Mader, Julia K.; Mankovsky, Boris; Mathioudakis, Nestoras N.; Mohan, Viswanathan; Peters, Anne L.; Shah, Viral N.; Spanakis, Elias K.; Waki, Kayo; Wright, Eugene E.; Zilbermint, Mihail; Wolpert, Howard A.; Steenkamp, Devin W.; Medicine, School of Medicine
    Background: Clinical interpretation of continuous glucose monitoring (CGM) data for people without diabetes has not been well established. This study aimed to investigate concordance among CGM experts in recommending clinical follow-up for individuals without diabetes, based upon their independent review of CGM data. Methods: We sent a survey out to expert clinicians (n = 18) and asked them to evaluate 20 potentially challenging Dexcom G6 Pro CGM reports (and hemoglobin A1c [HbA1c] and fasting venous blood glucose levels) from individuals without diabetes. Clinicians reported whether they would recommend follow-up and the reasoning for their decision. We performed Fleiss Kappa interrater reliability to determine agreement among clinicians. Results: More than half of expert clinicians (56-100%, but no clear consensus) recommended follow-up to individuals who spent >2% time above range (>180 mg/dL), even if HbA1c <5.7% and fasting glucose <100 mg/dL. There were no observed trends for recommending follow-up based on mean glucose or glucose management indicator. Overall, we observed poor agreement in recommendations for who should receive follow-up based on their CGM report (Fleiss Kappa = 0.36). Conclusions: High discordance among expert clinicians when interpreting potentially challenging CGM reports for people without diabetes highlights the need for more research in developing normative data for people without diabetes. Future work is required to develop CGM criteria for identifying potentially high-risk individuals who may progress to prediabetes or type 2 diabetes.
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    Molecular Signatures of Glomerular Neovascularization in a Patient with Diabetic Kidney Disease
    (Wolters Kluwer, 2024) Ferkowicz, Michael J.; Verma, Ashish; Barwinska, Daria; Ferreira, Ricardo Melo; Henderson, Joel M.; Kirkpatrick, Mary; Silva, Paolo S.; Steenkamp, Devin W.; Phillips, Carrie L.; Waikar, Sushrut S.; Sutton, Timothy A.; Kidney Precision Medicine Project; Medicine, School of Medicine
    The Kidney Precision Medicine Project (KPMP) aims to create a kidney tissue atlas, define disease subgroups, and identify critical cells, pathways, and targets for novel therapies through molecular investigation of human kidney biopsies obtained from participants with AKI or CKD. We present the case of a 66-year-old woman with diabetic kidney disease who underwent a protocol KPMP kidney biopsy. Her clinical history included diabetes mellitus complicated by neuropathy and eye disease, increased insulin resistance, hypertension, albuminuria, and relatively preserved glomerular filtration rate (early CKD stage 3a). The patient's histopathology was consistent with diabetic nephropathy and arterial and arteriolar sclerosis. Three-dimensional, immunofluorescence imaging of the kidney biopsy specimen revealed extensive periglomerular neovascularization that was underestimated by standard histopathologic approaches. Spatial transcriptomics was performed to obtain gene expression signatures at discrete areas of the kidney biopsy. Gene expression in the areas of glomerular neovascularization revealed increased expression of genes involved in angiogenic signaling, proliferation, and survival of endothelial cells, as well as new vessel maturation and stability. This molecular correlation provides additional insights into the development of kidney disease in patients with diabetes and spotlights how novel molecular techniques used by the KPMP can supplement and enrich the histopathologic diagnosis obtained from a kidney biopsy.