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http://dx.doi.org/10.1111/age.13436 | DOI Listing |
Sisli Etfal Hastan Tip Bul
December 2024
Division of Pediatric Endocrinology, Department of Pediatrics, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye.
Chromosome 15q26 deletion is a rare condition that causes short stature and is associated with intrauterine growth restriction (IUGR), failure to thrive, congenital heart disease and many congenital malformations. The insulin growth factor receptor (IGF-1R) on chromosome 15 has many important roles, especially in growth regulation. Our case is an 18-month-old small for gestational age girl who presented with severe short stature, microcephaly and minor dysmorphic features.
View Article and Find Full Text PDFOrphanet J Rare Dis
January 2025
The Genetics and Prenatal Diagnosis Center, The Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Jianshe Rd, Erqi District, Zhengzhou, 450052, Henan, China.
Objective: Spinal muscular atrophy (SMA) is a motor neuron disorder encompassing 5q and non-5q forms, causing muscle weakness and atrophy due to spinal cord cell degeneration. Understanding its genetic basis is crucial for genetic counseling and personalized treatment options.
Methods: This study retrospectively analyzed families of patients suspected of SMA at our institution from February 2006 to March 2024.
Sci Transl Med
January 2025
Hypothalamic Research Center, Department of Internal Medicine, UT Southwestern Medical Center, Dallas TX, 75390, USA.
Disruption of hypothalamic melanocortin 4 receptors (MC4Rs) causes obesity in mice and humans. Here, we investigated the transcriptional regulation of in the hypothalamus. In mice, we show that the homeodomain transcription factor Orthopedia (OTP) is enriched in MC4R neurons in the paraventricular nucleus (PVN) of the hypothalamus and directly regulates transcription.
View Article and Find Full Text PDFNeurodegener Dis Manag
January 2025
Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA, USA.
Friedreich ataxia (FRDA) is a slowly progressive neurological disease resulting from decreased levels of the protein frataxin, a small mitochondrial protein that facilitates the synthesis of iron-sulfur clusters in the mitochondrion. It is caused by GAA (guanine-adenine-adenine) repeat expansions in the gene in 96% of patients, with 4% of patients carrying other mutations (missense, nonsense, deletion) in the gene. Compound heterozygote patients with one expanded GAA allele and a non-GAA repeat mutation can have subtle differences in phenotype from typical FRDA, including, in patients with selected missense mutations, both more severe features and less severe features in the same patient.
View Article and Find Full Text PDFClin Dysmorphol
January 2025
Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India.
Introduction: Agrin, encoded by AGRN, plays a vital role in the acetylcholine receptor clustering pathway, and any defects in this pathway are known to cause congenital myasthenic syndrome (CMS) 8 in early childhood with variable fatigable muscle weakness. The most severe or lethal form of CMS manifests as a fetal akinesia deformation sequence (FADS). To date, only one family has been reported with an association of null variants in AGRN and a lethal FADS.
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