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Ferrario A, Aliu N, Rieubland C, Vuilleumier S, Grabe HM, Escher P. Expanding Genotype/Phenotype Correlation in 2p11.2-p12 Microdeletion Syndrome. Genes (Basel) 2023; 14:2222. [PMID: 38137045 PMCID: PMC10742694 DOI: 10.3390/genes14122222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
Chromosomal abnormalities on the short arm of chromosome 2 in the region p11.2 have been associated with developmental delay, intellectual disability, facial anomalies, abnormal ears, skeletal and genital malformations. Here we describe a patient with a de novo interstitial heterozygous microdeletion on the short arm of chromosome 2 in the region p11.2-p12. He presents with facial dysmorphism characterized by a broad and low root of the nose and low-set protruding ears. Clinical examinations during follow-up visits revealed congenital pendular nystagmus, decreased visual acuity and psychomotor development disorder including intellectual disability. The heterozygous 5 Mb-microdeletion was characterized by an array CGH (Comparative Genomic Hybridization) analysis. In the past two decades, nine patients with microdeletions in this region have been identified by array CGH analysis and were reported in the literature. All these patients show psychomotor development disorder and outer and/or inner ear anomalies. In addition, most of the patients have mild to severe intellectual disability and show facial malformations. We reviewed the literature on PubMed and OMIM using the gene/loci names as search terms in an attempt to identify correlations between genes located within the heterozygous microdeletion and the clinical phenotype of the patient, in order to define a recognizable phenotype for the 2p11.2p12 microdeletion syndrome. We discuss additional symptoms that are not systematically present in all patients and contribute to a heterogeneous clinical presentation of this microdeletion syndrome.
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Affiliation(s)
- Alessandra Ferrario
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.F.); (S.V.); (H.M.G.)
| | - Nijas Aliu
- Department of Human Genetics, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (N.A.)
| | - Claudine Rieubland
- Department of Human Genetics, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (N.A.)
| | - Sébastian Vuilleumier
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.F.); (S.V.); (H.M.G.)
| | - Hilary M. Grabe
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.F.); (S.V.); (H.M.G.)
| | - Pascal Escher
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (A.F.); (S.V.); (H.M.G.)
- Department of BioMedical Research, University of Bern, 3010 Bern, Switzerland
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Baviera-Muñoz R, Martínez-Rubio D, Sastre-Bataller I, Campins-Romeu M, Losada-López M, Pérez-García J, Novella-Maestre E, Martínez-Torres I, Espinós C. A 3.9-Mb Deletion on 2p11.2 Comprising the REEP1 Gene Causes Early-Onset Atypical Parkinsonism. Neurol Genet 2021; 7:e642. [PMID: 34825060 PMCID: PMC8610491 DOI: 10.1212/nxg.0000000000000642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 10/18/2021] [Indexed: 11/15/2022]
Affiliation(s)
- Raquel Baviera-Muñoz
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Dolores Martínez-Rubio
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Isabel Sastre-Bataller
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Marina Campins-Romeu
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Mireya Losada-López
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Julia Pérez-García
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Edurne Novella-Maestre
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Irene Martínez-Torres
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
| | - Carmen Espinós
- Health Research Institute (R.B.-M.), Hospital Universitari i Politècnic La Fe; Unit of Rare Neurodegenerative Diseases (D.M.-R., C.E.), Centro de Investigación Príncipe Felipe (CIPF); Joint Units INCLIVA & IIS La Fe Rare Diseases (D.M.-R., C.E.); Movement Disorders Unit (I.S.-B., M.C.-R., M.L.-L., J.P.-G., I.M.-T.), Neurology Department, Hospital Universitari i Politècnic La Fe; Department of Genetics (E.N.-M.), Hospital Universitari i Politècnic La Fe; and Health Sciences Faculty, Universidad Internacional de Valencia (VIU) (E.N.-M.), Valencia, Spain
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Paganelli V, Giordano M, Meazza C, Schena L, Bozzola M. An intragenic deletion within CTNNA2 intron 7 in a boy with short stature and speech delay: A case report. SAGE Open Med Case Rep 2017; 5:2050313X17693967. [PMID: 28250917 PMCID: PMC5317034 DOI: 10.1177/2050313x17693967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/23/2017] [Indexed: 11/28/2022] Open
Abstract
Background/Objectives: Deletions on the short arm of chromosome 2 at bands p11 and p12 have been detected in association with short stature, mild mental retardation and speech delay. Results: We describe a 4 year-old boy with some facial dysmorphic traits, congenital malformations and pre- and post-natal growth failure. He also presented marked expressive language problems. The molecular karyotype revealed a 108 Kb deletion within the seventh intron of the CTNNA2 gene at 2p11.2-p12. We observed that some features (short stature, facial dysmorphisms and speech delay) were present in our patient and in patients carrying much larger overlapping deletions. Conclusions: The description of this small intragenic rearrangement might help to elucidate the role of the single genes included in the 2p11.2-p12 critical region.
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Affiliation(s)
- Valeria Paganelli
- University of Pavia-Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Mara Giordano
- Laboratory of Genetics, Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Cristina Meazza
- Internal Medicine and Therapeutics Department, Paediatric and Adolescent Unit, University of Pavia-Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Lucia Schena
- University of Pavia-Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Mauro Bozzola
- Internal Medicine and Therapeutics Department, Paediatric and Adolescent Unit, University of Pavia-Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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