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Alves CAPF, Sherbini O, D'Arco F, Steel D, Kurian MA, Radio FC, Ferrero GB, Carli D, Tartaglia M, Balci TB, Powell-Hamilton NN, Schrier Vergano SA, Reutter H, Hoefele J, Günthner R, Roeder ER, Littlejohn RO, Lessel D, Lüttgen S, Kentros C, Anyane-Yeboa K, Catarino CB, Mercimek-Andrews S, Denecke J, Lyons MJ, Klopstock T, Bhoj EJ, Bryant L, Vanderver A. Brain Abnormalities in Patients with Germline Variants in H3F3: Novel Imaging Findings and Neurologic Symptoms Beyond Somatic Variants and Brain Tumors. AJNR Am J Neuroradiol 2022; 43:1048-1053. [PMID: 35772801 DOI: 10.3174/ajnr.a7555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/18/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Pathogenic somatic variants affecting the genes Histone 3 Family 3A and 3B (H3F3) are extensively linked to the process of oncogenesis, in particular related to central nervous system tumors in children. Recently, H3F3 germline missense variants were described as the cause of a novel pediatric neurodevelopmental disorder. We aimed to investigate patterns of brain MR imaging of individuals carrying H3F3 germline variants. MATERIALS AND METHODS In this retrospective study, we included individuals with proved H3F3 causative genetic variants and available brain MR imaging scans. Clinical and demographic data were retrieved from available medical records. Molecular genetic testing results were classified using the American College of Medical Genetics criteria for variant curation. Brain MR imaging abnormalities were analyzed according to their location, signal intensity, and associated clinical symptoms. Numeric variables were described according to their distribution, with median and interquartile range. RESULTS Eighteen individuals (10 males, 56%) with H3F3 germline variants were included. Thirteen of 18 individuals (72%) presented with a small posterior fossa. Six individuals (33%) presented with reduced size and an internal rotational appearance of the heads of the caudate nuclei along with an enlarged and squared appearance of the frontal horns of the lateral ventricles. Five individuals (28%) presented with dysgenesis of the splenium of the corpus callosum. Cortical developmental abnormalities were noted in 8 individuals (44%), with dysgyria and hypoplastic temporal poles being the most frequent presentation. CONCLUSIONS Imaging phenotypes in germline H3F3-affected individuals are related to brain features, including a small posterior fossa as well as dysgenesis of the corpus callosum, cortical developmental abnormalities, and deformity of lateral ventricles.
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Affiliation(s)
| | - O Sherbini
- Department of Neurology (O.S., A.V.), Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - D Steel
- Neurology (D.S., M.A.K.), Great Ormond Street Hospital for Children, London, UK.,Molecular Neurosciences (D.S., M.A.K.), Zayed Centre for Research into Rare Diseases in Children, UCL GOS-Institute of Child Health, London, UK
| | - M A Kurian
- Neurology (D.S., M.A.K.), Great Ormond Street Hospital for Children, London, UK.,Molecular Neurosciences (D.S., M.A.K.), Zayed Centre for Research into Rare Diseases in Children, UCL GOS-Institute of Child Health, London, UK
| | - F C Radio
- Genetics and Rare Diseases Research Division (F.C.R., M.T.), Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - G B Ferrero
- Department of Public Health and Pediatrics (G.B.F., D.C.), University of Torino, Turin, Italy
| | - D Carli
- Department of Public Health and Pediatrics (G.B.F., D.C.), University of Torino, Turin, Italy
| | - M Tartaglia
- Genetics and Rare Diseases Research Division (F.C.R., M.T.), Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - T B Balci
- Medical Genetics Programof Southwestern Ontario (T.B.B.), London Health Sciences Centre, London, Ontario, Canada.,Department of Paediatrics (T.B.B.), Western University, London, Ontario, Canada
| | - N N Powell-Hamilton
- Division of Medical Genetics (N.N.P.-H.), Nemours Children's Hospital, Wilmington, Delaware
| | - S A Schrier Vergano
- Division of Medical Genetics and Metabolism (S.A.S.V.), Children's Hospital of The King's Daughters, Norfolk, Virginia.,Department of Pediatrics (S.A.S.V.), Eastern Virginia Medical School, Norfolk, Virginia
| | - H Reutter
- Division of Neonatology and Pediatric Intensive Care (H.R.), Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander University Nürnberg-Erlangen, Erlangen, Germany
| | - J Hoefele
- Institute of Human Genetics (J.H., R.G.)
| | - R Günthner
- Institute of Human Genetics (J.H., R.G.).,Department of Nephrology (R.G.), Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - E R Roeder
- Department of Pediatrics and Molecular and Human Genetics (E.R.R., R.O.L.), Baylor College of Medicine, San Antonio, Texas
| | - R O Littlejohn
- Department of Pediatrics and Molecular and Human Genetics (E.R.R., R.O.L.), Baylor College of Medicine, San Antonio, Texas
| | - D Lessel
- Institute of Human Genetics (D.L., S.L.), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - S Lüttgen
- Institute of Human Genetics (D.L., S.L.), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - C Kentros
- Division of Clinical Genetics (C.K., K.A.-Y.), Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons and New York-Presbyterian, New York, New York
| | - K Anyane-Yeboa
- Division of Clinical Genetics (C.K., K.A.-Y.), Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons and New York-Presbyterian, New York, New York
| | - C B Catarino
- Friedrich-Baur-Institute (C.B.C., T.K.), Department of Neurology, University Hospital, Ludwig-Maximilian University Munich, Munich, Germany
| | - S Mercimek-Andrews
- Department of Medical Genetics (S.M.-A.), Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada.,Department of Medical Genetics (S.M.-A.), The Hospital for Sick Children, Toronto, Ontario, Canada
| | - J Denecke
- Department of Pediatrics (J.D.), University Medical Center Eppendorf, Hamburg, Germany
| | - M J Lyons
- Greenwood Genetic Center (M.J.L.), Greenwood, South Carolina
| | - T Klopstock
- Friedrich-Baur-Institute (C.B.C., T.K.), Department of Neurology, University Hospital, Ludwig-Maximilian University Munich, Munich, Germany.,German Center for Neurodegenerative Diseases (T.K.), Munich, Germany.,Munich Cluster for Systems Neurology (T.K.), Munich, Germany
| | - E J Bhoj
- Department of Radiology, Division of Human Genetics (E.J.B., L.B.)
| | - L Bryant
- Department of Radiology, Division of Human Genetics (E.J.B., L.B.)
| | - A Vanderver
- Department of Pediatrics, and Division of Neurology (A.V.), Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Neurology (O.S., A.V.), Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Agolini E, Dentici ML, Bellacchio E, Alesi V, Radio FC, Torella A, Musacchia F, Tartaglia M, Dallapiccola B, Nigro V, Digilio MC, Novelli A. Expanding the clinical and molecular spectrum of PRMT7 mutations: 3 additional patients and review. Clin Genet 2018; 93:675-681. [PMID: 28902392 DOI: 10.1111/cge.13137] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 08/31/2017] [Accepted: 09/06/2017] [Indexed: 01/07/2023]
Abstract
Protein arginine methyltransferase 7 (PRMT7) is a member of a family of enzymes that catalyze the transfer of methyl groups from S-adenosyl-l-methionine to nitrogen atoms on arginine residues. Arginine methylation is involved in multiple biological processes, such as signal transduction, mRNA splicing, transcriptional control, DNA repair, and protein translocation. Currently, 7 patients have been described harboring compound heterozygous or homozygous variants in the PRMT7 gene, causing a novel intellectual disability syndrome, known as SBIDDS syndrome (Short Stature, Brachydactyly, Intellectual Developmental Disability, and Seizures). We report on 3 additional patients from 2 consanguineous families with severe/moderate intellectual disability, short stature, brachydactyly and dysmorphisms. Exome sequencing revealed 2 novel homozygous mutations in PRMT7. Our findings expand the clinical and molecular spectrum of homozygous PRMT7 mutations, associated to the SBIDDS syndrome, showing a possible correlation between the type of mutation and the severity of the phenotype.
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Affiliation(s)
- E Agolini
- Laboratory of Medical Genetics, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - M L Dentici
- Medical Genetics Unit, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - E Bellacchio
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - V Alesi
- Laboratory of Medical Genetics, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - F C Radio
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - A Torella
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - F Musacchia
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - M Tartaglia
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - B Dallapiccola
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - V Nigro
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - M C Digilio
- Medical Genetics Unit, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - A Novelli
- Laboratory of Medical Genetics, Ospedale Pediatrico Bambino Gesù, Rome, Italy
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3
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Bottillo I, La Starza R, Radio FC, Molica C, Pedace L, Pierini T, De Bernardo C, Stingeni L, Bargiacchi S, Paiardini A, Janson G, Mecucci C, Grammatico P. A novel germline mutation in CDK4 codon 24 associated to familial melanoma. Clin Genet 2017; 93:934-935. [PMID: 29124743 DOI: 10.1111/cge.13129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/21/2017] [Accepted: 08/23/2017] [Indexed: 11/28/2022]
Affiliation(s)
- I Bottillo
- Division/Laboratory of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - R La Starza
- Molecular Medicine Laboratory, Department of Medicine, CREO, University of Perugia, Perugia, Italy
| | - F C Radio
- Division/Laboratory of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - C Molica
- Molecular Medicine Laboratory, Department of Medicine, CREO, University of Perugia, Perugia, Italy
| | - L Pedace
- Division/Laboratory of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - T Pierini
- Molecular Medicine Laboratory, Department of Medicine, CREO, University of Perugia, Perugia, Italy
| | - C De Bernardo
- Division/Laboratory of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - L Stingeni
- Section of Clinical, Allergological and Venereological Dermatology, Department of Medicine, University of Perugia, Perugia, Italy
| | - S Bargiacchi
- Division/Laboratory of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - A Paiardini
- Department of Biology and Biotechnology "Charles Darwin", Sapienza University, Rome, Italy
| | - G Janson
- Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University, Rome, Italy
| | - C Mecucci
- Molecular Medicine Laboratory, Department of Medicine, CREO, University of Perugia, Perugia, Italy
| | - P Grammatico
- Division/Laboratory of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
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