993 results match your criteria: "Department of Clinical Genomics[Affiliation]"

Article Synopsis
  • Mono-allelic DHDDS variants lead to a range of neurological issues, including seizures, intellectual disabilities, and movement disorders, with symptoms beginning at different ages and progressing variably among patients.
  • A study of 59 patients revealed that while symptoms often start early, the onset and development can differ widely, with some experiencing the full range in childhood and others in adulthood.
  • No clear links were found between symptom onset or progression and factors like patient sex or specific DHDDS variants, but 19% of patients also showed signs of autism spectrum disorder, highlighting its relevance in managing the condition.
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Background/objectives: Understanding the metabolic responses to different macronutrients is crucial for assessing their impacts on health. This study aims to investigate the postprandial metabolomic profiles of healthy individuals following the consumption of glucose, protein, and lipids.

Methods: Twenty-three healthy, normal-weight adults participated in the study, randomly assigned to consume 300 kcal from glucose, protein, or lipids after an overnight fast.

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Background: To define the optimal chemotherapy regimen for each patient we therefore used tissue from patients to identify molecular prognostic or predictive biomarkers.

Methods: Endoscopic biopsy specimens from primary lesions and surgical specimens on a phase III trial in patients with unresectable advanced or recurrent gastric cancer treated with docetaxel with cisplatin plus S-1 (DCS) or cisplatin plus S-1 (CS), were collected. We measured the mRNA expression of ERCC1 and analyzed SNPs in GSTP1 and ERCC1.

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A familial chromosome 4p16.3 terminal microdeletion that does not cause Wolf-Hirschhorn (4p-) syndrome.

Chromosome Res

November 2024

Department of Clinical Genomics, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.

Chromosome 4p16.3 microdeletions are known to cause Wolf-Hirschhorn syndrome (WHS), which is characterized by a distinct craniofacial gestalt and multiple congenital malformations. The 4p16.

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Arab founder variants: Contributions to clinical genomics and precision medicine.

Med

November 2024

Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia; Department of Pediatrics, Prince Sultan Military Medical Center, Riyadh 12233, Saudi Arabia. Electronic address:

Background: Founder variants are ancestral variants shared by individuals who are not closely related. The large effect size of some of these variants in the context of Mendelian disorders offers numerous precision medicine opportunities.

Methods: Using one of the largest datasets on Mendelian disorders in the Middle East, we identified 2,908 medically relevant founder variants derived from 18,360 exomes and genomes and investigated their contribution to the clinical annotation of the human genome.

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CHD2-related epilepsy with eyelid myoclonia: Report of three cases.

Epileptic Disord

November 2024

Department of Neurology, Division of Epilepsy, Mayo Clinic, Rochester, Minnesota, USA.

The aim of this study is to report three cases of epilepsy with eyelid myoclonia (EEM) with CHD2 pathogenic variants. A database of 134 patients with EEM evaluated at Mayo Clinic sites was searched to identify patients with CHD2 variants. The medical records of those identified were reviewed to describe their presentation, treatment, and clinical course.

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Biallelic GGGCC repeat expansion leading to NAXE-related mitochondrial encephalopathy.

NPJ Genom Med

October 2024

Laboratory for Comprehensive Genomic Analysis, RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.

Article Synopsis
  • * The repeat expansion, consisting of around 200 repeats, caused significant reductions in both RNA and protein levels, indicating transcriptional suppression likely due to CpG hypermethylation in the promoter region.
  • * Genetic analysis showed that the patient's homozygosity was a result of maternal chromosome 1 uniparental disomy, suggesting that this mechanism might help explain the presence of rare repeat expansions in other genetic disorders.
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Current immunoassay techniques for analyzing clinically relevant parathyroid hormone (PTH) circulating fragments cannot distinguish microheterogeneity among structurally similar molecular species. This hinders the identification of molecular species and the capture of target analyte information. Since structural modifications are important in disease pathways, mass spectrometry can detect, identify, and quantify heterogeneous ligands captured by antibodies.

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Purpose: Utilization of oocyte donation has become an increasingly common practice in assisted reproductive technology (ART). Since the introduction of larger carrier screening (CS) panels and extended family medical histories (EFMH), studies have not examined how this information factors into the oocyte donor selection process. This exploratory, qualitative study provides further insight into what role, if any, donors' available genetic information (e.

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SOS1-Related Noonan Syndrome and Sudden Cardiac Arrest in the Absence of Cardiomyopathy-An Arrhythmia Phenotype?

Am J Med Genet A

October 2024

Division of Pediatric Cardiology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota, USA.

Noonan syndrome (NS) is a predominantly autosomal dominant condition with various cardiac and extra-cardiac manifestations. Although it has been linked with atrial arrhythmias, ventricular arrhythmias are extremely rare in the absence of underlying structural cardiac abnormalities. We report an instance of aborted sudden cardiac arrest in a 7-year-old male with a confirmed SOS1 variant and a lack of evidence to support a structural cardiac, metabolic, or infectious etiology.

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Pathogenic Variants Resulting in Dural Based Fibroinflammatory Mass Lesions and H Syndrome Treated With Cobimetinib: A Case Report.

Neurol Genet

December 2024

From the Department of Neurology (S.A.B., A.J.A., G.F.K., N.K., W.O.T.); Division of Hematology (J.P.A., J.C.V., R.G.); Division of Hematopathology (K.R.); Division of Neuroradiology (P.M.); Department of Clinical Genomics (Q.K.G.T., L.N.V.); Division of General Internal Medicine (K.L.S.); Department of Dermatology (S.S.D., H.S.M.); Division of Endocrinology (C.J.D.-P.), Diabetes, Nutrition; and Center for Multiple Sclerosis and Autoimmune Neurology at Mayo Clinic (W.O.T.), Rochester, MN.

Objectives: Pathogenic variants are known to cause autosomal recessive disease with a spectrum of systemic involvement. We sought to expand on the spectrum of variants and describe potential treatment.

Methods: We describe a case of newly diagnosed -related disorder, also known as H syndrome or familial histiocytosis, associated with CNS inflammatory pseudotumor and spinal cord compression.

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Article Synopsis
  • - Microtubule affinity-regulating kinase 2 (MARK2) is crucial for neurons to develop properly, and variants in MARK2 have been linked to autism spectrum disorder (ASD) and other neurodevelopmental issues, with most being loss-of-function mutations.
  • - A study analyzed 31 individuals with MARK2 variants showing ASD along with unique facial features, finding that the loss of MARK2 disrupts early neuron development and leads to abnormal growth patterns in neural cells.
  • - Research using iPSC models and MARK2-deficient mice highlighted the link between MARK2 loss and issues in neuronal function, connecting it to the reduction of the WNT/β-catenin signaling pathway, while suggesting lithium as a potential treatment
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Article Synopsis
  • Liraglutide is a medicine for type 2 diabetes that helps control blood sugar and reduces heart problems for patients.
  • Researchers studied how Liraglutide affects the body's metabolism by looking at blood samples before and after treatment from 20 diabetes patients.
  • They found that Liraglutide changed 93 different substances in the body, which could help explain its health benefits, like improving immune functions and helping remove harmful substances.
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Follow-up report on pulmonary mucosa-associated lymphoma in a patient with von Hippel-Lindau disease.

J Surg Case Rep

October 2024

Department of Clinical Genomics, Mayo Clinic, East Shea Blvd, Scottsdale, AZ 85259, United States.

Article Synopsis
  • As FDA-approved Belzutifan shows promise in managing von Hippel-Lindau (VHL)-related lesions, questions arise about its effectiveness against non-VHL tumors that don't require immediate surgery.
  • The follow-up report focuses on a VHL patient with a history of pulmonary mucosa-associated lymphoid tissue lymphoma, revisiting a case discussed in scientific literature around 10 years ago.
  • The case underscores the challenges faced by VHL patients with additional non-VHL tumors and highlights the potential for targeted medical support.
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N-glycoproteomic and proteomic alterations in SRD5A3-deficient fibroblasts.

Glycobiology

September 2024

Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, United States.

SRD5A3-CDG is a congenital disorder of glycosylation (CDG) resulting from pathogenic variants in SRD5A3 and follows an autosomal recessive inheritance pattern. The enzyme encoded by SRD5A3, polyprenal reductase, plays a crucial role in synthesizing lipid precursors essential for N-linked glycosylation. Despite insights from functional studies into its enzymatic function, there remains a gap in understanding global changes in patient cells.

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Pheochromocytomas and paragangliomas (PPGLs) are rare neuroendocrine tumors often linked to underlying genetic variants. Genetic analysis can promote gene-adjusted, specific follow-up, and surveillance protocols for both patients and their families at risk. We report the case of a 7-yr-old boy with bilateral pheochromocytoma, which recurred a year after partial adrenalectomy.

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Article Synopsis
  • Accurate estimation of tumor mutational burden (TMB) can be improved by including non-coding regions in gene panel assays, which are often overlooked in current calculations that only consider coding regions.
  • This study tested the OncoGuide NCC Oncopanel System (NOP) and found that using both coding and non-coding regions (NOP-overall) significantly increased agreement with TMB status compared to using only coding regions (NOP-coding).
  • Results showed a higher overall percent agreement (OPA) and smaller mean difference in TMB values when including non-coding regions, underlining their importance for precise TMB estimates, especially in smaller panels.
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Article Synopsis
  • Multi-gene hereditary cancer screenings can enhance prevention and treatment for patients and their families, but require integration into various cancer care settings to ensure diverse communities benefit.
  • A survey of 230 diverse cancer patients revealed a strong intent to share genetic results with family, but this intent varied; patients were more likely to disclose to sisters than brothers, and many were uncertain about sharing with at-risk relatives.
  • Recognizing the factors influencing sharing decisions among patients can help clinicians improve genetic screening support and address disparities in cancer care.
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Background: Liraglutide, a long-acting glucagon-like peptide-1 receptor agonist (GLP1RA), is a well-established anti-diabetic drug, has also been approved for the treatment of obesity at a dose of 3 mg. There are a limited number of studies in the literature that have looked at changes in metabolite levels before and after liraglutide treatment in patients with obesity. To this end, in the present study we aimed to explore the changes in the plasma metabolomic profile, using liquid chromatography-high resolution mass spectrometry (LC-HRMS) in patients with obesity.

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Loss-of-Function Variants in CUL3 Cause a Syndromic Neurodevelopmental Disorder.

Ann Neurol

September 2024

Department of Medical Genetics, Center for Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, China.

Article Synopsis
  • - This study examines the link between rare variants in the cullin-3 ubiquitin ligase (CUL3) gene and neurodevelopmental disorders (NDDs), gathering data from multiple centers to explore genetic mutations and their clinical impacts.
  • - Researchers identified 37 individuals with CUL3 variants, most of which result in loss-of-function (LoF), leading to intellectual disabilities and possibly autistic traits; specific mechanisms affecting protein stability were also investigated.
  • - The findings enhance the understanding of NDDs associated with CUL3 mutations, suggesting that LoF variants are the main cause, which could help inform future diagnostics and treatment strategies.
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Background And Aims: Social determinants of health contribute to disparities in gastrointestinal (GI) cancer mortality between individuals in the US. Their effects on count-level mortality rates remain uncertain. We aimed to assess the association between county social vulnerability and GI cancer mortality.

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Li-Fraumeni syndrome (LFS) is a hereditary cancer predisposition syndrome associated with germline mutations in tumor suppressor gene . Perivascular epithelioid cell tumors (PEComas) are a group of tumors by the World Health Organization Classification as mesenchymal tumors composed of histologically and immunohistochemically distinctive PECs. The present study reports a rare case of PEComa associated with LFS.

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Developing a scoring system for gene curation prioritization in lysosomal diseases.

Mol Genet Metab

October 2024

Center for Individualized Medicine, Mayo Clinic, Rochester, MN, United States of America; Department of Clinical Genomics, Mayo Clinic, Rochester, MN, United States of America. Electronic address:

Introduction: Diseases caused by lysosomal dysfunction often exhibit multisystemic involvement, resulting in substantial morbidity and mortality. Ensuring accurate diagnoses for individuals with lysosomal diseases (LD) is of great importance, especially with the increasing prominence of genetic testing as a primary diagnostic method. As the list of genes associated with LD continues to expand due to the use of more comprehensive tests such as exome and genome sequencing, it is imperative to understand the clinical validity of the genes, as well as identify appropriate genes for inclusion in multi-gene testing and sequencing panels.

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Purpose: Inborn errors of metabolism (IEM) are known with poor long-term health concerns; however, the health-related quality of life (HRQoL) and the burden placed on families remain unclear. This study investigated the self- and proxy-reported HRQoL of pediatric patients with IEM with or without developmental disabilities and the burden placed on their caregivers.

Methods: Patients with IEM aged 8-15 years and their caregivers were asked to respond to the Pediatric Quality of Life Inventory (PedsQL), EuroQoL five-dimension questionnaire for younger populations (EQ-5D-Y), and Japanese version of the Zarit Caregiver Burden Interview (J-ZBI).

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