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Zheng J, Gu M, Xiao S, Li C, Mi H, Xu X. Novel SETBP1 D874V adjacent to the degron causes canonical schinzel-giedion syndrome: a case report and review of the literature. BMC Pediatr 2024; 24:309. [PMID: 38711130 PMCID: PMC11071329 DOI: 10.1186/s12887-024-04779-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 04/22/2024] [Indexed: 05/08/2024] Open
Abstract
Schinzel-Giedion syndrome (SGS) is a severe multisystem disorder characterized by distinctive facial features, profound intellectual disability, refractory epilepsy, cortical visual impairment, hearing loss, and various congenital anomalies. SGS is attributed to gain-of-function (GoF) variants in the SETBP1 gene, with reported variants causing canonical SGS located within a 12 bp hotspot region encoding SETBP1 residues aa868-871 (degron). Here, we describe a case of typical SGS caused by a novel heterozygous missense variant, D874V, adjacent to the degron. The female patient was diagnosed in the neonatal period and presented with characteristic facial phenotype (midface retraction, prominent forehead, and low-set ears), bilateral symmetrical talipes equinovarus, overlapping toes, and severe bilateral hydronephrosis accompanied by congenital heart disease, consistent with canonical SGS. This is the first report of a typical SGS caused by a, SETBP1 non-degron missense variant. This case expands the genetic spectrum of SGS and provides new insights into genotype-phenotype correlations.
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Affiliation(s)
- Jing Zheng
- Department of Pediatrics, The First People's Hospital of Yunnan Province, 157 Jinbi Road, Xishan District, Kunming, 650032, Yunnan Province, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Meiqun Gu
- Department of Pediatrics, The First People's Hospital of Yunnan Province, 157 Jinbi Road, Xishan District, Kunming, 650032, Yunnan Province, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Shasha Xiao
- Department of Pediatrics, The First People's Hospital of Yunnan Province, 157 Jinbi Road, Xishan District, Kunming, 650032, Yunnan Province, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Chongzhen Li
- Department of Pediatrics, The First People's Hospital of Yunnan Province, 157 Jinbi Road, Xishan District, Kunming, 650032, Yunnan Province, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Hongying Mi
- Department of Pediatrics, The First People's Hospital of Yunnan Province, 157 Jinbi Road, Xishan District, Kunming, 650032, Yunnan Province, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Xiaoyan Xu
- Department of Pediatrics, The First People's Hospital of Yunnan Province, 157 Jinbi Road, Xishan District, Kunming, 650032, Yunnan Province, China.
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China.
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2
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Whitlock JH, Wilk EJ, Howton TC, Clark AD, Lasseigne BN. The landscape of SETBP1 gene expression and transcription factor activity across human tissues. PLoS One 2024; 19:e0296328. [PMID: 38165902 PMCID: PMC10760659 DOI: 10.1371/journal.pone.0296328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/11/2023] [Indexed: 01/04/2024] Open
Abstract
The SET binding protein 1 (SETBP1) gene encodes a transcription factor (TF) involved in various cellular processes. Variants in SETBP1 can result in three different diseases determined by the introduction (germline vs. somatic) and location of the variant. Germline variants cause the ultra-rare pediatric Schinzel Giedion Syndrome (SGS) and SETBP1 haploinsufficiency disorder (SETBP1-HD), characterized by severe multisystemic abnormalities with neurodegeneration or a less severe brain phenotype accompanied by hypotonia and strabismus, respectively. Somatic variants in SETBP1 are associated with hematological malignancies and cancer development in other tissues in adults. To better understand the tissue-specific mechanisms involving SETBP1, we analyzed publicly available RNA-sequencing (RNA-seq) data from the Genotype-Tissue Expression (GTEx) project. We found SETBP1 and its known target genes were widely expressed across 31 adult human tissues. K-means clustering identified three distinct expression patterns of SETBP1 targets across tissues. Functional enrichment analysis (FEA) of each cluster revealed gene sets related to transcriptional regulation, DNA binding, and mitochondrial function. TF activity analysis of SETBP1 and its target TFs revealed tissue-specific TF activity, underscoring the role of tissue context-driven regulation and suggesting its impact in SETBP1-associated disease. In addition to uncovering tissue-specific molecular signatures of SETBP1 expression and TF activity, we provide a Shiny web application to facilitate exploring TF activity across human tissues for 758 TFs. This study provides insight into the landscape of SETBP1 expression and TF activity across 31 non-diseased human tissues and reveals tissue-specific expression and activity of SETBP1 and its targets. In conjunction with the web application we constructed, our framework enables researchers to generate hypotheses related to the role tissue backgrounds play with respect to gene expression and TF activity in different disease contexts.
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Affiliation(s)
- Jordan H. Whitlock
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Elizabeth J. Wilk
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Timothy C. Howton
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Amanda D. Clark
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Brittany N. Lasseigne
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, Alabama, United States of America
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Lomeli C. S, Kristin B. A. Epigenetic regulation of craniofacial development and disease. Birth Defects Res 2024; 116:e2271. [PMID: 37964651 PMCID: PMC10872612 DOI: 10.1002/bdr2.2271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/13/2023] [Accepted: 10/24/2023] [Indexed: 11/16/2023]
Abstract
BACKGROUND The formation of the craniofacial complex relies on proper neural crest development. The gene regulatory networks (GRNs) and signaling pathways orchestrating this process have been extensively studied. These GRNs and signaling cascades are tightly regulated as alterations to any stage of neural crest development can lead to common congenital birth defects, including multiple syndromes affecting facial morphology as well as nonsyndromic facial defects, such as cleft lip with or without cleft palate. Epigenetic factors add a hierarchy to the regulation of transcriptional networks and influence the spatiotemporal activation or repression of specific gene regulatory cascades; however less is known about their exact mechanisms in controlling precise gene regulation. AIMS In this review, we discuss the role of epigenetic factors during neural crest development, specifically during craniofacial development and how compromised activities of these regulators contribute to congenital defects that affect the craniofacial complex.
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Affiliation(s)
- Shull Lomeli C.
- Department of Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Artinger Kristin B.
- Department of Diagnostic and Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN, USA
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Whitlock JH, Soelter TM, Howton TC, Wilk EJ, Oza VH, Lasseigne BN. Cell-type-specific gene expression and regulation in the cerebral cortex and kidney of atypical Setbp1 S858R Schinzel Giedion Syndrome mice. J Cell Mol Med 2023; 27:3565-3577. [PMID: 37872881 PMCID: PMC10660642 DOI: 10.1111/jcmm.18001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/27/2023] [Accepted: 10/05/2023] [Indexed: 10/25/2023] Open
Abstract
Schinzel Giedion Syndrome (SGS) is an ultra-rare autosomal dominant Mendelian disease presenting with abnormalities spanning multiple organ systems. The most notable phenotypes involve severe developmental delay, progressive brain atrophy, and drug-resistant seizures. SGS is caused by spontaneous variants in SETBP1, which encodes for the epigenetic hub SETBP1 transcription factor (TF). SETBP1 variants causing classical SGS cluster at the degron, disrupting SETBP1 protein degradation and resulting in toxic accumulation, while those located outside cause milder atypical SGS. Due to the multisystem phenotype, we evaluated gene expression and regulatory programs altered in atypical SGS by snRNA-seq of the cerebral cortex and kidney of Setbp1S858R heterozygous mice (corresponds to the human likely pathogenic SETBP1S867R variant) compared to matched wild-type mice by constructing cell-type-specific regulatory networks. Setbp1 was differentially expressed in excitatory neurons, but known SETBP1 targets were differentially expressed and regulated in many cell types. Our findings suggest molecular drivers underlying neurodevelopmental phenotypes in classical SGS also drive atypical SGS, persist after birth, and are present in the kidney. Our results indicate SETBP1's role as an epigenetic hub leads to cell-type-specific differences in TF activity, gene targeting, and regulatory rewiring. This research provides a framework for investigating cell-type-specific variant impact on gene expression and regulation.
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Affiliation(s)
- Jordan H. Whitlock
- Department of Cell, Developmental and Integrative Biology, Heersink School of MedicineThe University of Alabama at BirminghamBirminghamAlabamaUSA
| | - Tabea M. Soelter
- Department of Cell, Developmental and Integrative Biology, Heersink School of MedicineThe University of Alabama at BirminghamBirminghamAlabamaUSA
| | - Timothy C. Howton
- Department of Cell, Developmental and Integrative Biology, Heersink School of MedicineThe University of Alabama at BirminghamBirminghamAlabamaUSA
| | - Elizabeth J. Wilk
- Department of Cell, Developmental and Integrative Biology, Heersink School of MedicineThe University of Alabama at BirminghamBirminghamAlabamaUSA
| | - Vishal H. Oza
- Department of Cell, Developmental and Integrative Biology, Heersink School of MedicineThe University of Alabama at BirminghamBirminghamAlabamaUSA
| | - Brittany N. Lasseigne
- Department of Cell, Developmental and Integrative Biology, Heersink School of MedicineThe University of Alabama at BirminghamBirminghamAlabamaUSA
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Whitlock JH, Wilk EJ, Howton TC, Clark AD, Lasseigne BN. The landscape of SETBP1 gene expression and transcription factor activity across human tissues. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.08.551337. [PMID: 37873221 PMCID: PMC10592643 DOI: 10.1101/2023.08.08.551337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Background The SET binding protein 1 (SETBP1) gene encodes a transcription factor (TF) involved in various cellular processes. Distinct SETBP1 variants have been linked to three different diseases. Germline variants cause the ultra-rare pediatric Schinzel Giedion Syndrome (SGS) and SETBP1 haploinsufficiency disorder (SETBP1-HD), characterized by severe multisystemic abnormalities with neurodegeneration or a less severe brain phenotype accompanied by hypotonia and strabismus, respectively. Somatic variants in SETBP1 are associated with hematological malignancies and cancer development in other tissues in adults. Results To better understand the tissue-specific mechanisms involving SETBP1, we analyzed publicly available RNA-sequencing data from the Genotype-Tissue Expression (GTEx) project. We found SETBP1, and its known target genes were widely expressed across 31 adult human tissues. K-means clustering identified three distinct expression patterns of SETBP1 targets across tissues. Functional enrichment analysis (FEA) of each cluster revealed gene sets related to transcription regulation, DNA binding, and mitochondrial function. TF activity analysis of SETBP1 and its target TFs revealed tissue-specific TF activity, underscoring the role of tissue context-driven regulation and suggesting its impact in SETBP1-associated disease. In addition to uncovering tissue-specific molecular signatures of SETBP1 expression and TF activity, we provide a Shiny web application to facilitate exploring TF activity across human tissues for 758 TFs. Conclusions This study provides insight into the landscape of SETBP1 expression and TF activity across 31 non-diseased human tissues and reveals tissue-specific expression and activity of SETBP1 and its targets. In conjunction with the web application we constructed, our framework enables researchers to generate hypotheses related to the role tissue backgrounds play with respect to gene expression and TF activity in different disease contexts.
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Affiliation(s)
- Jordan H. Whitlock
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, U.S.A
| | - Elizabeth J. Wilk
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, U.S.A
| | - Timothy C. Howton
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, U.S.A
| | - Amanda D. Clark
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, U.S.A
| | - Brittany N. Lasseigne
- Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, U.S.A
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Wang L, Wang XD, Yang B, Wang XM, Peng YQ, Tan HJ, Xiao HM. Novel SETBP1 mutation in a chinese family with intellectual disability. BMC Med Genomics 2023; 16:233. [PMID: 37798664 PMCID: PMC10552191 DOI: 10.1186/s12920-023-01649-x] [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: 03/01/2023] [Accepted: 08/28/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Intellectual disability (ID) is characterized by an IQ < 70, which implies below-average intellectual function and a lack of skills necessary for daily living. ID may occur due to multiple causes, such as metabolic, infectious, and chromosomal causes. ID affects approximately 1-3% of the population; however, the cause can be identified in only 25% of clinical patients. METHODS To find the cause of genetic ID in a family, we performed whole-exome sequencing and Sanger sequencing to confirm the presence of a SETBP1 variant and real-time quantitative polymerase chain reaction to detect SETBP1 expression in the proband and normal controls. RESULTS A novel variant, c.942_943insGT (p. Asp316TrpfsTer28), was found in SETBP1. Furthermore, we observed that SETBP1 expression in patients was only 20% that of normal controls (P < 0.05). CONCLUSION A heterozygous variant in SETBP1 associated with ID was found. This report provides further evidence for its genetic basis and support for clinical genetic diagnosis.
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Affiliation(s)
- Le Wang
- School of Basic Medical Science, Hunan University of Medicine, Huaihua, Hunan, China
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Xu-Dong Wang
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Bo Yang
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Xue-Meng Wang
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Yu-Qian Peng
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Hang-Jing Tan
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Hong-Mei Xiao
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, Hunan, China.
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Wang H, Gao Y, Qin L, Zhang M, Shi W, Feng Z, Guo L, Zhu B, Liao S. Identification of a novel de novo mutation of SETBP1 and new findings of SETBP1 in tumorgenesis. Orphanet J Rare Dis 2023; 18:107. [PMID: 37150818 PMCID: PMC10165755 DOI: 10.1186/s13023-023-02705-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 04/20/2023] [Indexed: 05/09/2023] Open
Abstract
BACKGROUND In the past decade, SETBP1 has attracted a lot of interest on that the same gene with different type or level (germline or somatic) of variants could provoke different pathologic consequences such as Schinzel-Giedon syndrome, SETBP1 Haploinsufficiency Disorder (SETBP1-HD) and myeloid malignancies. Whole exome sequencing was conducted to detect the etiology of a pregnant woman with mental retardation. As a new oncogene and potential marker of myeloid malignancies, somatic SETBP1 variants in other cancers were rarely studied. We performed a pan-cancer analysis of SETBP1 gene in different cancers for the first time. RESULTS A novel heterozygous mutation of the SETBP1 gene (c.1724_1727del, p.D575Vfs*4) was found in the patient and the fetus and the mutation was predicted to result in a truncated protein. Reduced SETBP1 expression was associated with SETBP1-HD. The pan-cancer analysis of SETBP1 showed that SETBP1 overexpression should be given special attention in Bladder Urothelial Carcinoma (BLCA) and Stomach adenocarcinoma (STAD). CONCLUSIONS The de novo SETBP1 mutation was the genetic cause of SETBP1-HD in the family. BLCA and STAD might be related to SETBP1 overexpression.
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Affiliation(s)
- Hongdan Wang
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China.
- National Health Commission Key Laboratory of Birth Defects Prevention, Henan Key Laboratory of Population Defects Prevention, Zhengzhou, China.
| | - Yue Gao
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Litao Qin
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Mengting Zhang
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Weili Shi
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Zhanqi Feng
- Department of Urology, The First People's Hospital of Zhengzhou, Zhengzhou, China
| | - Liangjie Guo
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Bofeng Zhu
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou, China.
| | - Shixiu Liao
- Medical Genetic Institute of Henan Province, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China.
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Zhou Y, Quan Y, Wu Y, Zhang Y. Prenatal diagnosis and molecular cytogenetic characterization of an inherited microdeletion of 18q12.3 encompassing SETBP1. J Int Med Res 2022; 50:3000605221121955. [PMID: 36113068 PMCID: PMC9478714 DOI: 10.1177/03000605221121955] [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] [Indexed: 11/17/2022] Open
Abstract
The 18q12.3 region contains the SET binding protein 1 (SETBP1) gene. SETBP1 mutations or deletions are associated with Schinzel-Giedion syndrome or intellectual developmental disorder, autosomal dominant 29. We report the prenatal diagnosis and genetic counseling of a patient with a maternally inherited 18q12.3 microdeletion. In this family, the mother and son carried the same microdeletion. Chromosomal microdeletions and microduplications are difficult to detect using conventional cytogenetics, whereas the combination of prenatal ultrasound, karyotype analysis, chromosomal microarray analysis, and genetic counseling is helpful for the prenatal diagnosis of chromosomal microdeletions/microduplications.
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Affiliation(s)
- Yaqing Zhou
- Reproductive Center Laboratory, Ninghai County Maternal and Child Health Hospital, Ningbo, Zhejiang, PR China
| | - Yan Quan
- Department of Maternal Health Care, Shiyan Maternal and Child Health Hospital, Shiyan, Hubei, PR China
| | - Yijun Wu
- Department of Obstetrics, Huanggang Central Hospital, Huanggang, Hubei, PR China
| | - Yinxing Zhang
- Department of Obstetrics and Gynecology, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, Hubei, PR China
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9
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Yang H, Liu Z, Chen D, Lin W, Wang L, Chen T, Wang R, Yan X. Detection of a novel SETBP1 variant in a Chinese neonate with Schinzel-Giedion syndrome. Front Pediatr 2022; 10:920741. [PMID: 36147799 PMCID: PMC9488805 DOI: 10.3389/fped.2022.920741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 08/12/2022] [Indexed: 11/23/2022] Open
Abstract
Schinzel-Giedion syndrome (SGS) is a multiple malformation syndrome characterized by typical facial features, severe neurodevelopmental delay, and multiple congenital abnormalities. SGS is associated with de novo pathogenic variants in the SETBP1 gene. In specific, SETBP1 variants in over 50 patients with classical or non-classical SGS were clustered within exon 4. A male Chinese neonate with dysmorphic facial features, nervous system disorders, and organ malformations at birth was examined in this study and long-term followed-up. Whole-exome sequencing was performed to identify any underlying pathogenic variants in the proband. Additionally, we reviewed the literature that documents the main clinical features and underlying variants of all patients genetically diagnosed with SGS. The neonate had a characteristic midface retraction, abnormal electroencephalogram waveforms, and genital abnormalities. The patient did not initially develop hydronephrosis or undergo a comprehensive skeletal assessment. Six months after birth, the patient had an epileptic seizure and experienced persistent neurodevelopmental delay with auditory and visual abnormalities. Color Doppler ultrasonography at 18 months revealed hydronephrosis and bilateral widening of the lateral ventricles. The patient died suddenly 20.5 months after birth. Whole-exome sequencing revealed a heterozygous de novo variant (c.2605A > G:p.S869G) in exon 4 degradation sequence in SETBP1. The reported de novo heterozygous variant in SETBP1 (c.2605A > G:p.S869G) broadens the knowledge of the scientific community's on the possible SGS genetic alterations. To the best of our knowledge, this is the first report of SETBP1 variant (c.2605A > G:p.S869G) in SGS. The clinical manifestations of neonatal SGS are atypical, and genetic testing is crucial for diagnosis. Long-term follow-up should be conducted after diagnosis to optimize the therapeutic interventions.
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Affiliation(s)
- Hansong Yang
- Department of Neonatology, Quanzhou Maternity and Children's Hospital, Quanzhou, China
| | - Zhiyong Liu
- Department of Neonatology, Quanzhou Maternity and Children's Hospital, Quanzhou, China
| | - Dongmei Chen
- Department of Neonatology, Quanzhou Maternity and Children's Hospital, Quanzhou, China
| | - Weiru Lin
- Department of Ultrasound, Quanzhou Maternity and Children's Hospital, Quanzhou, China
| | - Lin Wang
- Xiamen Genokon Medical Technology Co., Ltd., Xiamen, China
| | - Tianfeng Chen
- Department of Radiology, Quanzhou Maternity and Children's Hospital, Quanzhou, China
| | - Ruiquan Wang
- Department of Neonatology, Quanzhou Maternity and Children's Hospital, Quanzhou, China
| | - Xialin Yan
- Department of Neonatology, Quanzhou Maternity and Children's Hospital, Quanzhou, China
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10
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Buch J, Ranganath P. Approach to inherited hypertrichosis: A brief review. Indian J Dermatol Venereol Leprol 2021; 88:11-21. [PMID: 34379956 DOI: 10.25259/ijdvl_629_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 12/01/2020] [Indexed: 11/04/2022]
Abstract
Hypertrichosis refers to the growth of hair, of an excessive amount and thickness, on any part of the body. It must be distinguished from hirsutism which is characterized by excess growth of hair in androgen-dependent areas on the upper lip, chin, chest, linea alba, thigh and axilla. Hypertrichosis may be localized or generalized, and congenital or acquired. Excess hair growth has a psychological impact on the child as well as the parents due to the cosmetic disfigurement it produces. Current treatment options are limited and not wholly satisfactory. Treatment should be customized according to the area, nature and amount of hair growth, age of the patient and personal preferences. In addition, when hypertrichosis occurs as a component of a syndrome, multidisciplinary management is required to address the associated systemic features. A detailed review of inherited generalized hypertrichosis is presented here with emphasis on clinical clues to identifying complex syndromes with multisystem involvement.
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Affiliation(s)
- Jeta Buch
- Dermaclinix - The Complete Skin and Hair Solution Centre, New Delhi, India
| | - Prajnya Ranganath
- Department of Medical Genetics, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
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Banfi F, Rubio A, Zaghi M, Massimino L, Fagnocchi G, Bellini E, Luoni M, Cancellieri C, Bagliani A, Di Resta C, Maffezzini C, Ianielli A, Ferrari M, Piazza R, Mologni L, Broccoli V, Sessa A. SETBP1 accumulation induces P53 inhibition and genotoxic stress in neural progenitors underlying neurodegeneration in Schinzel-Giedion syndrome. Nat Commun 2021; 12:4050. [PMID: 34193871 PMCID: PMC8245514 DOI: 10.1038/s41467-021-24391-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 06/18/2021] [Indexed: 02/06/2023] Open
Abstract
The investigation of genetic forms of juvenile neurodegeneration could shed light on the causative mechanisms of neuronal loss. Schinzel-Giedion syndrome (SGS) is a fatal developmental syndrome caused by mutations in the SETBP1 gene, inducing the accumulation of its protein product. SGS features multi-organ involvement with severe intellectual and physical deficits due, at least in part, to early neurodegeneration. Here we introduce a human SGS model that displays disease-relevant phenotypes. We show that SGS neural progenitors exhibit aberrant proliferation, deregulation of oncogenes and suppressors, unresolved DNA damage, and resistance to apoptosis. Mechanistically, we demonstrate that high SETBP1 levels inhibit P53 function through the stabilization of SET, which in turn hinders P53 acetylation. We find that the inheritance of unresolved DNA damage in SGS neurons triggers the neurodegenerative process that can be alleviated either by PARP-1 inhibition or by NAD + supplementation. These results implicate that neuronal death in SGS originates from developmental alterations mainly in safeguarding cell identity and homeostasis.
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MESH Headings
- Abnormalities, Multiple/genetics
- Abnormalities, Multiple/metabolism
- Abnormalities, Multiple/pathology
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Cells, Cultured
- Craniofacial Abnormalities/genetics
- Craniofacial Abnormalities/metabolism
- Craniofacial Abnormalities/pathology
- DNA Damage
- Hand Deformities, Congenital/genetics
- Hand Deformities, Congenital/metabolism
- Hand Deformities, Congenital/pathology
- Heredodegenerative Disorders, Nervous System/genetics
- Heredodegenerative Disorders, Nervous System/metabolism
- Heredodegenerative Disorders, Nervous System/pathology
- Humans
- Intellectual Disability/genetics
- Intellectual Disability/metabolism
- Intellectual Disability/pathology
- Mutation
- Nails, Malformed/genetics
- Nails, Malformed/metabolism
- Nails, Malformed/pathology
- Neural Stem Cells/metabolism
- Neural Stem Cells/pathology
- Nuclear Proteins/genetics
- Nuclear Proteins/metabolism
- Organoids
- Tumor Suppressor Protein p53/antagonists & inhibitors
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Affiliation(s)
- Federica Banfi
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- CNR Institute of Neuroscience, Milan, Italy
| | - Alicia Rubio
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- CNR Institute of Neuroscience, Milan, Italy
| | - Mattia Zaghi
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luca Massimino
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giulia Fagnocchi
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Edoardo Bellini
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Mirko Luoni
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Cinzia Cancellieri
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Human Induced Pluripotent Stem Cells service, Istituto Italiano di Oncologia Molecolare (IFOM), Milan, Italy
| | - Anna Bagliani
- Medical Oncology Unit, ASST Ovest Milanese, Legnano Hospital, Legnano, Italy
| | - Chiara Di Resta
- Vita-Salute San Raffaele University, Milan, Italy
- Unit of Genomics for human disease diagnosis, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Camilla Maffezzini
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Angelo Ianielli
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- CNR Institute of Neuroscience, Milan, Italy
| | | | - Rocco Piazza
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Luca Mologni
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Vania Broccoli
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- CNR Institute of Neuroscience, Milan, Italy
| | - Alessandro Sessa
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.
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Roomaney IA, Chetty M. Sella turcica morphology in patients with genetic syndromes: A systematic review. Orthod Craniofac Res 2020; 24:194-205. [PMID: 32920986 DOI: 10.1111/ocr.12426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/01/2020] [Accepted: 09/04/2020] [Indexed: 02/03/2023]
Abstract
The sella turcica is an important anatomical reference used in orthodontics for the evaluation of craniofacial growth. Studies have found variations in the sella turcica morphology in patients with syndromes affecting the craniofacial complex. This review aims to determine whether genetic syndromes involving the craniofacial complex are associated with abnormal radiographic sella turcica morphology and whether there is a pattern of malformation which is consistent within each syndrome. An electronic database search was conducted to identify relevant studies. We included primary studies describing the morphology of the sella turcica on lateral radiographs in human subjects with genetic syndromes involving the craniofacial complex. No restrictions were placed on language or timeframe. PROSPERO registration CRD42019148060. Thirty-eight studies were included in this review. A 'J'-shaped sella was found in patients with Hutchinson-Gilford-Progeria syndrome and other syndromes. A bulbous dorsum sellae was highly prevalent Cleidocranial dysplasia, and a bulbous dorsum sellae and uneven contours of the clivus was found in Cri du chat syndrome. A steep clivus was described in patients with Axenfeld-Rieger syndrome. An oblique anterior wall was the most frequent malformation found in Down's syndrome. Genetic syndromes affecting the craniofacial complex are associated with abnormal morphology of the radiographic sella turcica. Clinicians should be observant of abnormal sella turcica morphology which can be a sign of undiagnosed or subclinical syndromes. More high-quality studies are needed which use standardized and objective methods of determining the morphology of the sella turcica.
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Affiliation(s)
- Imaan A Roomaney
- Oral Biology, Craniofacial and Dental Genetics, Faculty of Dentistry, University of Western Cape, Tygerberg, South Africa
| | - Manogari Chetty
- Oral Biology, Craniofacial and Dental Genetics, Faculty of Dentistry, University of Western Cape, Tygerberg, South Africa
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Leone MP, Palumbo P, Palumbo O, Di Muro E, Chetta M, Laforgia N, Resta N, Stella A, Castellana S, Mazza T, Castori M, Carella M, Bukvic N. The recurrent SETBP1 c.2608G > A, p.(Gly870Ser) variant in a patient with Schinzel-Giedion syndrome: an illustrative case of the utility of whole exome sequencing in a critically ill neonate. Ital J Pediatr 2020; 46:74. [PMID: 32460883 PMCID: PMC7254667 DOI: 10.1186/s13052-020-00839-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023] Open
Abstract
Background Schinzel-Giedion syndrome (SGS) is a multiple malformation syndrome mainly characterized by severe intellectual disability, distinctive facial features, and multiple congenital anomalies, including skeletal abnormalities, genitourinary and renal malformations, cardiac defects, as well as an increased pediatric cancer risk. Recently, SGS has been associated with de novo heterozygous deleterious variants in the SETBP1 gene; to date, nine different variants, clustering in exon 4 of SETBP1, have been identified in 25 patients. Case presentation In this study, by using Whole Exome Sequencing (WES), we identified a patient with a recurrent missense mutation in SETBP1, the c.2608G > A, p.(Gly870Ser) variant, previously reported as likely pathogenic. This finding allowed us to confirm the suspected clinical diagnosis of SGS. Clinical features of patients carrying the same variant, including our patient, were evaluated by a review of medical records. Conclusions Our study confirms SGS as a severe disorder potentially presenting at birth as a critically ill neonate and demonstrates the causal role of the c.2608G > A, p.(Gly870Ser) variant in the etiology of the syndrome. Moreover, although the cohort of SETBP1-patients reported in the literature is still small, our study reports for the first time the prevalence of the variant (about 27%, 7/26). Finally, given the heterogeneity of clinical presentations of affected patients hospitalized in Neonatal Intensive Care Units (NICU) and/or Pediatric Intensive Care Units (PICU), in agreement with emerging data from the literature, we suggest that WES should be used in the diagnosis of unexplained syndromic conditions, and even as part of a standard first-line diagnostic approach, as it would allow a better diagnosis, counseling and management of affected patients and their families.
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Affiliation(s)
- Maria Pia Leone
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Pietro Palumbo
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Orazio Palumbo
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Ester Di Muro
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Massimiliano Chetta
- Division of Medical and Laboratory Genetics, Azienda Ospedaliera di Rilievo Nazionale "Antonio Cardarelli", Naples, Italy
| | - Nicola Laforgia
- Division of Neonatology and Neonatal Intensive Care, Azienda Ospedaliero-Universitaria Consorziale Policlinico di Bari, Bari, Italy
| | - Nicoletta Resta
- Medical Genetics, Department of Biomedical Sciences and Human Oncology (DIMO), University of Bari "Aldo Moro", Bari, Italy
| | - Alessandro Stella
- Medical Genetics, Department of Biomedical Sciences and Human Oncology (DIMO), University of Bari "Aldo Moro", Bari, Italy
| | - Stefano Castellana
- Bioinformatics Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Tommaso Mazza
- Bioinformatics Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Marco Castori
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy
| | - Massimo Carella
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, FG, Italy.
| | - Nenad Bukvic
- Division of Medical Genetics, Azienda Ospedaliero-Universitaria Consorziale Policlinico di Bari, Bari, Italy
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Sullivan JA, Stong N, Baugh EH, McDonald MT, Takeuchi A, Shashi V. A pathogenic variant in the SETBP1 hotspot results in a forme-fruste Schinzel-Giedion syndrome. Am J Med Genet A 2020; 182:1947-1951. [PMID: 32445275 DOI: 10.1002/ajmg.a.61630] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/25/2020] [Accepted: 04/28/2020] [Indexed: 12/12/2022]
Abstract
Schinzel-Giedion syndrome (SGS; OMIM 269150) is an ultra-rare genetic disorder associated with a distinctive facial gestalt, congenital malformations, severe intellectual disability, and a progressive neurological course. The prognosis for SGS is poor, with survival beyond the first decade rare. Germline, de novo heterozygous variants in the SETBP1 gene cause SGS with the pathogenic variants associated with the SGS phenotype missense and confined to exon 4 of the gene, clustered in a four amino acid (12 bp) hotspot in the SKI homologous region of the SETBP1 protein. We report a patient with a de novo I871S variant within the SKI homologous region, which has been associated with the severe phenotype previously; but our patient has fewer features of SGS and a milder course. This is the first report of a forme-fruste phenotype in a patient with a pathogenic variant within the SGS hotspot on the SETBP1 gene and it highlights the importance of considering atypical clinical presentations in the context of severe ultra-rare genetic disorders.
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Affiliation(s)
- Jennifer A Sullivan
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
| | - Nicholas Stong
- Institute for Genomic Medicine, Columbia University, New York, New York, USA
| | - Evan H Baugh
- Institute for Genomic Medicine, Columbia University, New York, New York, USA
| | - Marie T McDonald
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
| | - Akihito Takeuchi
- Department of Neonatology, Okayama Medical Center, National Hospital Organization, Okayama, Japan
| | - Vandana Shashi
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
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