ArticleAmerican journal of human genetics2021
COPB2 loss of function causes a coatopathy with osteoporosis and developmental delay.
Article in American journal of human genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02450851 (Clinical and Genetic Evaluation of Patients With Undiagnosed Disorders Through the Undiagnosed Diseases Network), which is not on this map. Cited by 31 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Clinical and Genetic Evaluation of Patients With Undiagnosed Disorders Through the Undiagnosed Diseases Network
Who cites it
31 citing papers in PubMed, 37 citations in OpenAlex.
- The pathogenesis and intersecting mechanisms of monogenic bone mass disorders.Nature reviews. Endocrinology · 2026Review
- The Golgi apparatus: adaptations to neuronal shape and functions.The EMBO journal · 2026Review
- COPB2 facilitates EDEM3-mediated mannose trimming to sustain ER homeostasis in ovarian cancer.Cellular oncology (Dordrecht, Netherlands) · 2025Article
- Conditional knockout mouse model demonstrates that Copa expression is required for viability in development and adulthood.Biochemical and biophysical research communications · 2025Article
- Production and cryo-electron microscopy structure of an internally tagged SARS-CoV-2 spike ecto-domain construct.Journal of structural biology: X · 2025Article
- COPB1 deficiency triggers osteoporosis with elevated iron stores by inducing osteoblast ferroptosis.Journal of orthopaedic translation · 2025Article
- Article
- COPZ1: an example of non-oncogene addiction in human tumors.Frontiers in pharmacology · 2025Review
- Identification of a Fetal De Novo Splice Variant inMaternal-fetal medicine (Wolters Kluwer Health, Inc.) · 2025Article
- COPB2 promotes hepatocellular carcinoma progression through regulation of YAP1 nuclear translocation.Oncology research · 2025Article
- A novel ARCN1 splice-site variant in a Chinese girl with central precocious puberty, intrauterine growth restriction, microcephaly, and microretrognathia.BMC pediatrics · 2024Article
- Article
- Autoinflammatory patients with Golgi-trapped CDC42 exhibit intracellular trafficking defects leading to STING hyperactivation and ER stress.Nature communications · 2024Article
- Review
- Heterozygous mutations in the C-terminal domain of COPA underlie a complex autoinflammatory syndrome.The Journal of clinical investigation · 2024Article
- Integrating non-mammalian model organisms in the diagnosis of rare genetic diseases in humans.Nature reviews. Genetics · 2024Review
- Exploring the pathological mechanisms underlying Cohen syndrome.Frontiers in neuroscience · 2024Review
- A single C-terminal residue controls SARS-CoV-2 spike trafficking and incorporation into VLPs.Nature communications · 2023Article
- Strategies for rapid production of crystallization quality coatomer WD40 domains.Protein expression and purification · 2023Article
- Dominant negative variants in KIF5B cause osteogenesis imperfecta via down regulation of mTOR signaling.PLoS genetics · 2023Article
Corrections and comments
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Authors and funding
54 authors at 9 institutions in 3 countries.
Funding
Abstract
Coatomer complexes function in the sorting and trafficking of proteins between subcellular organelles. Pathogenic variants in coatomer subunits or associated factors have been reported in multi-systemic disorders, i.e., coatopathies, that can affect the skeletal and central nervous systems. We have identified loss-of-function variants in COPB2, a component of the coatomer complex I (COPI), in individuals presenting with osteoporosis, fractures, and developmental delay of variable severity. Electron microscopy of COPB2-deficient subjects' fibroblasts showed dilated endoplasmic reticulum (ER) with granular material, prominent rough ER, and vacuoles, consistent with an intracellular trafficking defect. We studied the effect of COPB2 deficiency on collagen trafficking because of the critical role of collagen secretion in bone biology. COPB2 siRNA-treated fibroblasts showed delayed collagen secretion with retention of type I collagen in the ER and Golgi and altered distribution of Golgi markers. copb2-null zebrafish embryos showed retention of type II collagen, disorganization of the ER and Golgi, and early larval lethality. Copb2
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.