Variants in SCAF4 Cause a Neurodevelopmental Disorder and Are Associated with Impaired mRNA Processing.


Journal

American journal of human genetics
ISSN: 1537-6605
Titre abrégé: Am J Hum Genet
Pays: United States
ID NLM: 0370475

Informations de publication

Date de publication:
03 09 2020
Historique:
received: 17 04 2020
accepted: 25 06 2020
pubmed: 31 7 2020
medline: 21 10 2020
entrez: 31 7 2020
Statut: ppublish

Résumé

RNA polymerase II interacts with various other complexes and factors to ensure correct initiation, elongation, and termination of mRNA transcription. One of these proteins is SR-related CTD-associated factor 4 (SCAF4), which is important for correct usage of polyA sites for mRNA termination. Using exome sequencing and international matchmaking, we identified nine likely pathogenic germline variants in SCAF4 including two splice-site and seven truncating variants, all residing in the N-terminal two thirds of the protein. Eight of these variants occurred de novo, and one was inherited. Affected individuals demonstrated a variable neurodevelopmental disorder characterized by mild intellectual disability, seizures, behavioral abnormalities, and various skeletal and structural anomalies. Paired-end RNA sequencing on blood lymphocytes of SCAF4-deficient individuals revealed a broad deregulation of more than 9,000 genes and significant differential splicing of more than 2,900 genes, indicating an important role of SCAF4 in mRNA processing. Knockdown of the SCAF4 ortholog CG4266 in the model organism Drosophila melanogaster resulted in impaired locomotor function, learning, and short-term memory. Furthermore, we observed an increased number of active zones in larval neuromuscular junctions, representing large glutamatergic synapses. These observations indicate a role of CG4266 in nervous system development and function and support the implication of SCAF4 in neurodevelopmental phenotypes. In summary, our data show that heterozygous, likely gene-disrupting variants in SCAF4 are causative for a variable neurodevelopmental disorder associated with impaired mRNA processing.

Identifiants

pubmed: 32730804
pii: S0002-9297(20)30228-7
doi: 10.1016/j.ajhg.2020.06.019
pmc: PMC7477272
pii:
doi:

Substances chimiques

RNA, Messenger 0
SCAF4 protein, human 0
Serine-Arginine Splicing Factors 170974-22-8
RNA Polymerase II EC 2.7.7.-

Types de publication

Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

544-554

Subventions

Organisme : NINDS NIH HHS
ID : K08 NS092898
Pays : United States
Organisme : NIH HHS
ID : P40 OD018537
Pays : United States

Investigateurs

Stanley F Nelson (SF)
Wayne W Grody (WW)
Hane Lee (H)
Joshua L Deignan (JL)
Sung-Hae Kang (SH)
Valerie A Arboleda (VA)
T Niroshi Senaratne (TN)
Naghmeh Dorrani (N)
Marina S Dutra-Clarke (MS)
Jessica Kianmahd (J)
Franceska L Hinkamp (FL)
Ahna M Neustadt (AM)
Julian A Martinez-Agosto (JA)
Brent L Fogel (BL)
Fabiola Quintero-Rivera (F)

Informations de copyright

Copyright © 2020 American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.

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Auteurs

Anna Fliedner (A)

Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany.

Philipp Kirchner (P)

Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany.

Antje Wiesener (A)

Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany.

Irma van de Beek (I)

Department of Clinical Genetics, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, the Netherlands.

Quinten Waisfisz (Q)

Department of Clinical Genetics, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, the Netherlands.

Mieke van Haelst (M)

Department of Clinical Genetics, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, the Netherlands.

Daryl A Scott (DA)

Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA.

Seema R Lalani (SR)

Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.

Jill A Rosenfeld (JA)

Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor Genetics Laboratories, Houston, TX 77021, USA.

Mahshid S Azamian (MS)

Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.

Fan Xia (F)

Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor Genetics Laboratories, Houston, TX 77021, USA.

Marina Dutra-Clarke (M)

Division of Medical Genetics, Department of Pediatrics, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA.

Julian A Martinez-Agosto (JA)

Division of Medical Genetics, Department of Pediatrics, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA; Department of Human Genetics, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA.

Hane Lee (H)

Department of Human Genetics, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA.

Grace J Noh (GJ)

Department of Genetics, Southern California Permanente Medical Group, Fontana, CA 92335, USA.

Natalie Lippa (N)

Institute for Genomic Medicine, Columbia University Irving Medical Center, New York, NY 10019, USA.

Anna Alkelai (A)

Institute for Genomic Medicine, Columbia University Irving Medical Center, New York, NY 10019, USA.

Vimla Aggarwal (V)

Institute for Genomic Medicine and Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY 10019, USA.

Katherine E Agre (KE)

Department of Clinical Genomics, Mayo Clinic, Rochester, MN 55905, USA.

Ralitza Gavrilova (R)

Department of Clinical Genomics, Mayo Clinic, Rochester, MN 55905, USA; Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA.

Ghayda M Mirzaa (GM)

Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA 98195, USA; Department of Pediatrics, University of Washington, Seattle, WA 98195, USA; Brotman Baty Institute for Precision Medicine, Seattle, WA 98195, USA.

Rachel Straussberg (R)

Neurogenetics Clinic, Neurology Unit, Schneider Children's Medical Center, Petah Tikva 49202, Israel; Sackler School of Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.

Rony Cohen (R)

Sackler School of Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel; Neurology Institute and Epilepsy Center, Schneider Children's Medical Center, Petah Tikva 49202, Israel.

Brooke Horist (B)

Pediatrics and Genetics, Alpharetta, GA 30005, USA.

Vidya Krishnamurthy (V)

Pediatrics and Genetics, Alpharetta, GA 30005, USA.

Kirsty McWalter (K)

Clinical Genomics, GeneDx, Gaithersburg, MD 20877, USA.

Jane Juusola (J)

Clinical Genomics, GeneDx, Gaithersburg, MD 20877, USA.

Laura Davis-Keppen (L)

University of South Dakota, Sanford School of Medicine, Sioux Falls, SD 57105, USA.

Lisa Ohden (L)

University of South Dakota, Sanford School of Medicine, Sioux Falls, SD 57105, USA.

Marjon van Slegtenhorst (M)

Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, the Netherlands.

Stella A de Man (SA)

Department of Pediatrics, Amphia Hospital, 4818 CK Breda, the Netherlands.

Arif B Ekici (AB)

Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany.

Anne Gregor (A)

Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany.

Ingrid van de Laar (I)

Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, the Netherlands.

Christiane Zweier (C)

Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany. Electronic address: christiane.zweier@uk-erlangen.de.

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