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Danhaive O, Galambos C, Lakshminrusimha S, Abman SH. Pulmonary Hypertension in Developmental Lung Diseases. Clin Perinatol 2024; 51:217-235. [PMID: 38325943 DOI: 10.1016/j.clp.2023.12.001] [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] [Indexed: 02/09/2024]
Abstract
Diverse genetic developmental lung diseases can present in the neonatal period with hypoxemic respiratory failure, often associated with with pulmonary hypertension. Intractable hypoxemia and lack of sustained response to medical management should increase the suspicion of a developmental lung disorder. Genetic diagnosis and lung biopsy are helpful in establishing the diagnosis. Early diagnosis can result in optimizing management and redirecting care if needed. This article reviews normal lung development, various developmental lung disorders that can result from genetic abnormalities at each stage of lung development, their clinical presentation, management, prognosis, and differential diagnoses.
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Affiliation(s)
- Olivier Danhaive
- Division of Neonatology, Saint-Luc University Hospital, UCLouvain, Avenue Hippocrate 10, B-1200 Brussels, Belgium; Department of Pediatrics, University of California San Francisco, 530 Parnassus Avenue, San Francisco, CA 94143, USA.
| | - Csaba Galambos
- Department of Pathology and Laboratory Medicine, University of Colorado Anschutz School of Medicine, 13001 East 17th Place, Aurora, CO 80045, USA
| | - Satyan Lakshminrusimha
- Department of Pediatrics, University of California, UC Davis Children's Hospital, 2516 Stockton Boulevard, Sacramento CA 95817, USA
| | - Steven H Abman
- Department of Pediatrics, The Pediatric Heart Lung Center, University of Colorado Anschutz Medical Campus, Mail Stop B395, 13123 East 16th Avenue, Aurora, CO 80045, USA
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Yıldız Bölükbaşı E, Karolak JA, Szafranski P, Gambin T, Willard N, Abman SH, Galambos C, Kinsella JP, Stankiewicz P. High-level gonosomal mosaicism for a pathogenic non-coding CNV deletion of the lung-specific FOXF1 enhancer in an unaffected mother of an infant with ACDMPV. Mol Genet Genomic Med 2022; 10:e2062. [PMID: 36124617 PMCID: PMC9651602 DOI: 10.1002/mgg3.2062] [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: 05/31/2022] [Revised: 08/22/2022] [Accepted: 09/08/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) results from haploinsufficiency of the mesenchymal transcription factor FOXF1 gene. To date, only one case of an ACDMPV-causative CNV deletion inherited from a very-low level somatic mosaic mother has been reported. METHODS Clinical, histopathological, and molecular studies, including whole genome sequencing, chromosomal microarray analysis, qPCR, and Sanger sequencing, followed by in vitro fertilization (IVF) with preimplantation genetic testing (PGT) were used to study a family with a deceased neonate with ACDMPV. RESULTS A pathogenic CNV deletion of the lung-specific FOXF1 enhancer in the proband was found to be inherited from an unaffected mother, 36% mosaic for this deletion in her peripheral blood cells. The qPCR analyses of saliva, buccal cells, urine, nail, and hair samples revealed 19%, 18%, 15%, 19%, and 27% variant allele fraction, respectively, indicating a high recurrence risk. Grandparental studies revealed that the deletion arose on the mother's paternal chromosome 16. PGT studies revealed 44% embryos with the deletion, reflecting high-level germline mosaicism. CONCLUSION Our data further demonstrate the importance of parental testing in ACDMPV families and reproductive usefulness of IVF with PGT in families with high-level parental gonosomal mosaicism.
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Affiliation(s)
| | - Justyna A. Karolak
- Chair and Department of Genetics and Pharmaceutical MicrobiologyPoznan University of Medical SciencesPoznanPoland
| | | | - Tomasz Gambin
- Institute of Computer ScienceWarsaw University of TechnologyWarsawPoland
| | - Nicholas Willard
- Department of Pathology and Laboratory MedicineUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA
| | - Steven H. Abman
- Department of PediatricsUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA
| | - Csaba Galambos
- Department of Pathology and Laboratory MedicineUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA,Department of PediatricsUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA
| | - John P. Kinsella
- Department of PediatricsUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA
| | - Paweł Stankiewicz
- Department of Molecular & Human GeneticsBaylor College of MedicineHoustonTexasUSA
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3
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Lin YB, Xia B, Cao J, Tang ZJ. Ultrasound findings in neonates with alveolar capillary dysplasia with misalignment of the pulmonary veins: report of two cases. J Int Med Res 2022; 50:3000605221126876. [PMID: 36173014 PMCID: PMC9528008 DOI: 10.1177/03000605221126876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 08/30/2022] [Indexed: 02/05/2023] Open
Abstract
Alveolar capillary dysplasia with misalignment of the pulmonary veins (ACDMPV) is a rare congenital pulmonary disease that affects newborns. Most patients with ACDMPV are born at full term and are healthy. The main clinical manifestations are refractory pulmonary hypertension and pulmonary failure with gastrointestinal, urinary, or cardiac malformations. ACDMPV often progresses rapidly, but no conventional biological or imaging tests other than genetic testing are available for its diagnosis. Lung biopsy is currently the gold standard for diagnosis. We herein report two cases of ACDMPV confirmed by pathological examination and discuss their ultrasonographic findings.
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Affiliation(s)
- Yan-bing Lin
- Department of Ultrasound, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
- Shantou University Medical College, Shantou, Guangdong, China
| | - Bei Xia
- Department of Ultrasound, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
- Shantou University Medical College, Shantou, Guangdong, China
- Bei Xia, Department of Ultrasound, Shenzhen Children’s Hospital, 7019 Yitian Road, Shenzhen 518026, China. E-mail:
| | - Juan Cao
- Department of Pathology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Zi-Jian Tang
- Department of Ultrasound, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
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Newton CA, Oldham JM, Applegate C, Carmichael N, Powell K, Dilling D, Schmidt SL, Scholand MB, Armanios M, Garcia CK, Kropski JA, Talbert J. The Role of Genetic Testing in Pulmonary Fibrosis. Chest 2022; 162:394-405. [PMID: 35337808 PMCID: PMC9424324 DOI: 10.1016/j.chest.2022.03.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/08/2022] [Accepted: 03/15/2022] [Indexed: 11/25/2022] Open
Abstract
Patients with familial pulmonary fibrosis represent a subset of patients with pulmonary fibrosis in whom inherited gene variation predisposes them to disease development. In the appropriate setting, genetic testing allows for personalized assessment of disease, recognition of clinically relevant extrapulmonary manifestations, and assessing susceptibility in unaffected relatives. However currently, the use of genetic testing is inconsistent, partly because of the lack of guidance regarding high-yield scenarios in which the results of genetic testing can inform clinical decision-making. To address this, the Pulmonary Fibrosis Foundation commissioned a genetic testing work group comprising pulmonologists, geneticists, and genetic counselors from the United States to provide guidance on genetic testing in patients with pulmonary fibrosis. This CHEST special feature presents a concise review of these proceedings and reviews pulmonary fibrosis susceptibility, clinically available genetic testing methods, and clinical scenarios in which genetic testing should be considered.
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Slot E, Boers R, Boers J, van IJcken WFJ, Tibboel D, Gribnau J, Rottier R, de Klein A. Genome wide DNA methylation analysis of alveolar capillary dysplasia lung tissue reveals aberrant methylation of genes involved in development including the FOXF1 locus. Clin Epigenetics 2021; 13:148. [PMID: 34325731 PMCID: PMC8323302 DOI: 10.1186/s13148-021-01134-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/14/2021] [Indexed: 12/11/2022] Open
Abstract
Background Alveolar capillary dysplasia with or without misalignment of the pulmonary veins (ACD/MPV) is a lethal congenital lung disorder associated with a variety of heterozygous genomic alterations in the FOXF1 gene or its 60 kb enhancer. Cases without a genomic alteration in the FOXF1 locus have been described as well. The mechanisms responsible for FOXF1 haploinsufficiency and the cause of ACD/MPV in patients without a genomic FOXF1 variant are poorly understood, complicating the search for potential therapeutic targets for ACD/MPV. To investigate the contribution of aberrant DNA methylation, genome wide methylation patterns of ACD/MPV lung tissues were compared with methylation patterns of control lung tissues using the recently developed technique Methylated DNA sequencing (MeD-seq).
Results Eight ACD/MPV lung tissue samples and three control samples were sequenced and their mutual comparison resulted in identification of 319 differentially methylated regions (DMRs) genome wide, involving 115 protein coding genes. The potentially upregulated genes were significantly enriched in developmental signalling pathways, whereas potentially downregulated genes were mainly enriched in O-linked glycosylation. In patients with a large maternal deletion encompassing the 60 kb FOXF1 enhancer, DNA methylation patterns in this FOXF1 enhancer were not significantly different compared to controls. However, two hypermethylated regions were detected in the 60 kb FOXF1 enhancer of patients harbouring a FOXF1 point mutation. Lastly, a large hypermethylated region overlapping the first FOXF1 exon was found in one of the ACD/MPV patients without a known pathogenic FOXF1 variation.
Conclusion This is the first study providing genome wide methylation data on lung tissue of ACD/MPV patients. DNA methylation analyses in the FOXF1 locus excludes maternal imprinting of the 60 kb FOXF1 enhancer. Hypermethylation at the 60 kb FOXF1 enhancer might contribute to FOXF1 haploinsufficiency caused by heterozygous mutations in the FOXF1 coding region. Interestingly, DNA methylation analyses of patients without a genomic FOXF1 variant suggest that abnormal hypermethylation of exon 1 might play a role in some ACD/MPV in patients. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-021-01134-1.
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Affiliation(s)
- Evelien Slot
- Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands.,Department of Clinical Genetics, Rm Ee2089, Erasmus MC Rotterdam, Wytemaweg 80, 3015 CN, Rotterdam, Netherlands
| | - Ruben Boers
- Department of Developmental Biology, Oncode Institute, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Joachim Boers
- Department of Developmental Biology, Oncode Institute, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Wilfred F J van IJcken
- Center for Biomics, Erasmus University Medical Center, Erasmus MC, Rotterdam, Netherlands.,Department of Cell Biology, Erasmus University Medical Center, Erasmus MC, Rotterdam, Netherlands
| | - Dick Tibboel
- Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | - Joost Gribnau
- Department of Developmental Biology, Oncode Institute, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Robbert Rottier
- Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands.,Department of Cell Biology, Erasmus University Medical Center, Erasmus MC, Rotterdam, Netherlands
| | - Annelies de Klein
- Department of Clinical Genetics, Rm Ee2089, Erasmus MC Rotterdam, Wytemaweg 80, 3015 CN, Rotterdam, Netherlands.
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Deng L, Liu X, Min J, Su Z, Yang Y, Ge L, Yang Z, Li B, Zhang X. De Novo mutation of FOXF1 causes alveolar capillary dysplasia with misalignment of pulmonary veins: A case report. Medicine (Baltimore) 2021; 100:e25375. [PMID: 33832123 PMCID: PMC8036095 DOI: 10.1097/md.0000000000025375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/11/2021] [Indexed: 11/25/2022] Open
Abstract
RATIONALE Alveolar capillary dysplasia with misalignment of the pulmonary veins (ACD/MPV) is a rare congenital malformation in neonates that results in severe respiratory distress and pulmonary hypertension. ACD/MPV is caused by mutations in the FOXF1 gene. Herein, a new case of a girl with ACD/MPV carrying a novel pathogenic variant of FOXF1 was reported. PATIENT CONCERNS A 3-month-old Chinese girl was admitted to the hospital presenting a complaint of cyanosis for 10 days and respiratory distress for 2 days. The history of foreign body inhalation was denied. DIAGNOSES Blood routine, liver and kidney function, electrolytes, type B natriuretic peptide, electrocardiogram, cardiac computed tomography (CT), and echocardiography were done after admission. Dysplasia of the alveolar and the left upper pulmonary vein was displayed through cardiac CT. Echocardiography showed atrial septal defect, tricuspid valve malformation, and pulmonary hypertension. Sequence analysis of FOXF1 from genomic deoxyribonucleic acid (DNA) revealed that the patient was heterozygous for a novel missense variant (c.418 C>T, p.Pro140Gly). Furthermore, genetic analysis of both parents confirmed the de novo occurrence of the variant. Conservation analysis showed that the locus was highly conserved across species. Then, ACD/MPV was a clinical diagnosis. INTERVENTIONS After admission, nasal catheter oxygen inhalation, cefazoxime sodium, furosemide diuretic, milrinone lactate, and Bosentan were given to the patient. OUTCOMES After 6 days of hospitalization, the patient's condition did not improved, the parents gave up treatment and discharged. The patient died half a month after discharge. LESSONS ACD/MPV is a rare congenital malformation with a poor prognosis. A new de novo mutation of FOXF1 was found in our case. Non-invasive methods such as DNA sequencing and FOXF1 analysis are helpful in the clinical diagnosis of ACD/MPV especially in early infants with respiratory distress and pulmonary hypertension.
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Affiliation(s)
- Lili Deng
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | - Xingzhu Liu
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | - Jieqing Min
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | - Zhongjian Su
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | - Yanfei Yang
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | - Liping Ge
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | | | - Bin Li
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
| | - Xing Zhang
- Department of Cardiology, Kunming Children's Hospital, Kunming, Yunnan
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Onda T, Akimoto T, Hayasaka I, Ikeda M, Furuse Y, Ando A, Nakamura Y, Honjo R, Manabe A, Furuta I, Cho K. Incidence of alveolar capillary dysplasia with misalignment of pulmonary veins in infants with unexplained severe pulmonary hypertension: The roles of clinical, pathological, and genetic testing. Early Hum Dev 2021; 155:105323. [PMID: 33578219 DOI: 10.1016/j.earlhumdev.2021.105323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/15/2021] [Accepted: 01/17/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) is a rare and fatal disorder that occurs in the developing fetal lungs; at birth, infants exhibit an oxygenation disorder accompanied by severe pulmonary hypertension (PH) and have a very short life span. ACDMPV is definitively diagnosed by pathological findings, and infants born with unexplained severe PH may not be properly diagnosed without a biopsy or autopsy. METHODS Japanese infants with unexplained severe PH were enrolled in this study. Genetic analyses were performed on DNA extracted from peripheral blood leukocytes. Sanger sequencing or next-generation sequencing was performed by coding exons and introns for FOXF1 in all samples. For individuals without pathogenic exonic variants, multiplex ligation-dependent probe amplification was performed to identify copy number variations (CNVs) in exons, introns, and in the upstream region of FOXF1. RESULTS This study included 30 infants who were diagnosed over the course of nine years. Four individuals had the pathogenic variations on the exon 1 of FOXF1, including two frameshift and two missense variations. Pathogenic CNVs were found in another five individuals. CONCLUSION In the pathologically proven ACDMPV patients, the ratios of cases with exonic variations, CNVs, and no genetic findings were reported as 45%, 45% and 10%, respectively. We estimate that about 30% (10 (9 + 1) out of 30) of individuals with unexplained severe PH had ACDMPV.
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Affiliation(s)
- Tetsuo Onda
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan.
| | - Takuma Akimoto
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Itaru Hayasaka
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan.
| | - Masahiko Ikeda
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Yuta Furuse
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan.
| | - Akiko Ando
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan.
| | - Yuichi Nakamura
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan.
| | - Ryota Honjo
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Atsushi Manabe
- Department of Pediatrics, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| | - Itsuko Furuta
- Department of Obstetrics and Gynecology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| | - Kazutoshi Cho
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan.
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Saadi S, Masmoudi T, Ben Daly A, Jedidi M, Mokni M, Ben Dhiab M, Zemni M, Souguir MK. Pulmonary alveolar capillary dysplasia in infants: A rare and deadly missed diagnosis. Ann Cardiol Angeiol (Paris) 2020; 71:112-114. [PMID: 32829892 DOI: 10.1016/j.ancard.2020.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
Abstract
The pulmonary alveolocapillary dysplasia (ACD) with pulmonary vein misalignment (PVM) is a rare condition characterized by a congenital anomaly of the development of the pulmonary parenchyma. We present a case of an 8-month-old infant who died quickly from acute respiratory failure complicating an unknown ACD. We also describe its epidemiological characteristics in infants and we discuss the diagnosis's difficulties. In this case, a pulmonary arterial hypertension was decompensated by an infection. A medico-legal autopsy was performed. As for the Histological examination, it showed the features of ACD/PVM.
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Affiliation(s)
- S Saadi
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia.
| | - T Masmoudi
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
| | - A Ben Daly
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
| | - M Jedidi
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
| | - M Mokni
- Department of Pathology, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
| | - M Ben Dhiab
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
| | - M Zemni
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
| | - M K Souguir
- Department of Forensic Medicine, Farhat Hached University Hospital, 4000, Sousse, Tunisia; Faculty of Medicine, University of Sousse, 4000, Sousse, Tunisia
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Jourdan-Voyen L, Touraine R, Masutti JP, Busa T, Vincent-Delorme C, Dreyfus L, Molin A, Savey B, Mounzer A, Assaf Z, Atallah V, da Cruz V, Gaillard D, Leroy-Terquem E, Mouton JB, Ghoumid J, Picaud JC, Dijoud F, Bouquillon S, Baumann C, Lambert L. Phenotypic and genetic spectrum of alveolar capillary dysplasia: a retrospective cohort study. Arch Dis Child Fetal Neonatal Ed 2020; 105:387-392. [PMID: 31641027 DOI: 10.1136/archdischild-2019-317121] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 09/19/2019] [Accepted: 09/28/2019] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Alveolar capillary dysplasia (ACD) is one of the causes of pulmonary hypertension. Its diagnosis is histological but new pathogenetic data have emerged. The aim of this study was to describe a French cohort of patients with ACD to improve the comprehension and the diagnosis of this pathology which is probably underdiagnosed. METHODS A retrospective observational study was conducted in French hospitals. Patients born between 2005 and 2017, whose biological samples were sent to the French genetic reference centres, were included. Clinical, histological and genetic data were retrospectively collected. RESULTS We presented a series of 21 patients. The mean of postmenstrual age at birth was 37.6 weeks. The first symptoms appeared on the median of 2.5 hours. Pulmonary hypertension was diagnosed in 20 patients out of 21. Two cases had prolonged survival (3.3 and 14 months). Histological analysis was done on lung tissue from autopsy (57.1% of cases) or from percutaneous biopsy (28.6%). FOXF1 was found abnormal in 15 patients (71.4%): 8 deletions and 7 point mutations. Two deletions were found by chromosomal microarray. CONCLUSION This study is one of the largest clinically described series in literature. It seems crucial to integrate genetics early into diagnostic support. We propose a diagnostic algorithm for helping medical teams to improve diagnosis of this pathology.
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Affiliation(s)
| | | | | | - Tiffany Busa
- Medical Genetics, Hôpital de la Timone, Marseille, France
| | | | | | | | | | | | - Ziad Assaf
- Neonatology, Hopital Universitaire Necker-Enfants Malades, Paris, France
| | | | | | | | | | | | - Jamal Ghoumid
- Genetics, CHRU Lille Pôle Spécialités Médico-Chirurgicales, Arras, France
| | - Jean-Charles Picaud
- Neonatology, Hopital Croix Rousse, Lyon, France.,Neonatology, Universite Lyon 1 Faculte de Medecine et de Maieutique Lyon-Sud Charles Merieux, Oullins, France
| | | | - Sonia Bouquillon
- Cytogenetics, CHRU Lille Pôle Spécialités Médico-Chirurgicales, Arras, France
| | - Cédric Baumann
- Platform of Clinical Research Facility PARC, CHU Nancy, Nancy, France
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10
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Kitano A, Nakaguro M, Tomotaki S, Hanaoka S, Kawai M, Saito A, Hayakawa M, Takahashi Y, Kawasaki H, Yamada T, Ikeda M, Onda T, Cho K, Haga H, Nakazawa A, Minamiguchi S. A familial case of alveolar capillary dysplasia with misalignment of the pulmonary veins: the clinicopathological features and unusual glomeruloid endothelial proliferation. Diagn Pathol 2020; 15:48. [PMID: 32386508 PMCID: PMC7211333 DOI: 10.1186/s13000-020-00972-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 05/05/2020] [Indexed: 11/12/2022] Open
Abstract
Background Alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV) is a rare disorder of pulmonary vascular abnormality with persistent pulmonary hypertension of the newborn. The symptom usually presents within hours after birth, leading to an early demise. Heterozygous de novo point mutations and genomic deletions of the FOXF1 (forkhead box F1) gene or its upstream enhancer have been identified in most patients with ACD/MPV. Most cases of ACD/MPV are sporadic; however, familial cases are also reported in 10% of patients. Case presentation We herein report a case of familial ACD/MPV that showed unusual glomeruloid proliferation of endothelial cells. In this family, three of the four siblings died within two to 3 days after birth because of persistent pulmonary hypertension and respiratory failure. Only the second child remains alive and healthy. An autopsy was performed for the third and fourth children, resulting in a diagnosis of ACD/MPV based on the characteristic features, including misalignment of smaller pulmonary veins and lymphangiectasis. In both of these children, glomeruloid endothelial proliferation of vessels was noted in the interlobular septa. The vessels were immunohistochemically positive for D2–40, CD31, Factor VIII, and ERG, suggestive of differentiation for both lymphatic and blood vessels. Conclusions Unusual glomeruloid endothelial proliferation was observed in a familial ACD/MPV case. This histologic feature has not been described previously in ACD/MPV or any other pulmonary disease. Although the histogenesis of this histologic feature is unclear, this finding may suggest that ACD/MPV is a compound vascular and lymphovascular system disorder that exhibits various histologic features.
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Affiliation(s)
- Akiko Kitano
- Department of Diagnostic Pathology, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Masato Nakaguro
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Seiichi Tomotaki
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Hanaoka
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masahiko Kawai
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akiko Saito
- Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan
| | - Masahiro Hayakawa
- Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Takahiro Yamada
- Clinical Genetics Unit, Kyoto University Hospital, Kyoto, Japan
| | - Masahiko Ikeda
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Tetsuo Onda
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Kazutoshi Cho
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Atsuko Nakazawa
- Department of Clinical Research, Saitama Children's Medical Center, Saitama, Japan
| | - Sachiko Minamiguchi
- Department of Diagnostic Pathology, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
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11
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Vincent M, Karolak JA, Deutsch G, Gambin T, Popek E, Isidor B, Szafranski P, Le Caignec C, Stankiewicz P. Clinical, Histopathological, and Molecular Diagnostics in Lethal Lung Developmental Disorders. Am J Respir Crit Care Med 2020; 200:1093-1101. [PMID: 31189067 DOI: 10.1164/rccm.201903-0495tr] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Lethal lung developmental disorders are a rare but important group of pediatric diffuse lung diseases presenting with neonatal respiratory failure. On the basis of histopathological appearance at lung biopsy or autopsy, they have been termed: alveolar capillary dysplasia with misalignment of the pulmonary veins, acinar dysplasia, congenital alveolar dysplasia, and other unspecified primary pulmonary hypoplasias. However, the histopathological continuum in these lethal developmental disorders has made accurate diagnosis challenging, which has implications for recurrence risk. Over the past decade, genetic studies in infants with alveolar capillary dysplasia with misalignment of the pulmonary veins have revealed the causative role of the dosage-sensitive FOXF1 gene and its noncoding regulatory variants in the distant lung-specific enhancer at chromosome 16q24.1. In contrast, the molecular bases of acinar dysplasia and congenital alveolar dysplasia have remained poorly understood. Most recently, disruption of the TBX4-FGF10-FGFR2 epithelial-mesenchymal signaling pathway has been reported in patients with these lethal pulmonary dysplasias. Application of next-generation sequencing techniques, including exome sequencing and whole-genome sequencing, has demonstrated their complex compound inheritance. These data indicate that noncoding regulatory elements play a critical role in lung development in humans. We propose that for more precise lethal lung developmental disorder diagnosis, a diagnostic pathway including whole-genome sequencing should be implemented.
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Affiliation(s)
- Marie Vincent
- Service de Genetique Medicale, Centre Hospitalier Universitaire de Nantes, Nantes, France.,Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Université de Nantes, L'institut du Thorax, Nantes, France
| | - Justyna A Karolak
- Department of Molecular and Human Genetics and.,Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Gail Deutsch
- Department of Pathology, Seattle Children's Hospital, Seattle, Washington
| | - Tomasz Gambin
- Department of Molecular and Human Genetics and.,Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland; and.,Institute of Computer Science, Warsaw University of Technology, Warsaw, Poland
| | - Edwina Popek
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
| | - Bertrand Isidor
- Service de Genetique Medicale, Centre Hospitalier Universitaire de Nantes, Nantes, France.,Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Université de Nantes, L'institut du Thorax, Nantes, France
| | | | - Cedric Le Caignec
- Service de Genetique Medicale, Centre Hospitalier Universitaire de Nantes, Nantes, France
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12
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Highly Sensitive Blocker Displacement Amplification and Droplet Digital PCR Reveal Low-Level Parental FOXF1 Somatic Mosaicism in Families with Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins. J Mol Diagn 2020; 22:447-456. [PMID: 32036090 DOI: 10.1016/j.jmoldx.2019.12.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/30/2019] [Accepted: 12/11/2019] [Indexed: 12/20/2022] Open
Abstract
Detection of low-level somatic mosaicism [alternate allele fraction (AAF) ≤ 10%] in parents of affected individuals with the apparent de novo pathogenic variants enables more accurate estimate of recurrence risk. To date, only a few systematic analyses of low-level parental somatic mosaicism have been performed. Herein, highly sensitive blocker displacement amplification, droplet digital PCR, quantitative PCR, long-range PCR, and array comparative genomic hybridization were applied in families with alveolar capillary dysplasia with misalignment of pulmonary veins. We screened 18 unrelated families with the FOXF1 variant previously determined to be apparent de novo (n = 14), of unknown parental origin (n = 1), or inherited from a parent suspected to be somatic and/or germline mosaic (n = 3). We identified four (22%) families with FOXF1 parental somatic mosaic single-nucleotide variants (n = 3) and copy number variant deletion (n = 1) detected in parental blood samples and an AAF ranging between 0.03% and 19%. In one family, mosaic allele ratio in tissues originating from three germ layers ranged between <0.03% and 0.65%. Because the ratio of parental somatic mosaicism have significant implications for the recurrence risk, this study further implies the importance of a systematic screening of parental samples for low-level and very-low-level (AAF ≤ 1%) somatic mosaicism using methods that are more sensitive than those routinely applied in diagnostics.
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13
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Szafranski P, Liu Q, Karolak JA, Song X, de Leeuw N, Faas B, Gerychova R, Janku P, Jezova M, Valaskova I, Gibbs KA, Surrey LF, Poisson V, Bérubé D, Oligny LL, Michaud JL, Popek E, Stankiewicz P. Association of rare non-coding SNVs in the lung-specific FOXF1 enhancer with a mitigation of the lethal ACDMPV phenotype. Hum Genet 2019; 138:1301-1311. [PMID: 31686214 DOI: 10.1007/s00439-019-02073-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 10/12/2019] [Indexed: 12/20/2022]
Abstract
Haploinsufficiency of FOXF1 causes alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV), a lethal neonatal lung developmental disorder. We describe two similar heterozygous CNV deletions involving the FOXF1 enhancer and re-analyze FOXF1 missense mutation, all associated with an unexpectedly mitigated disease phenotype. In one case, the deletion of the maternal allele of the FOXF1 enhancer caused pulmonary hypertension and histopathologically diagnosed MPV without the typical ACD features. In the second case, the deletion of the paternal enhancer resulted in ACDMPV rather than the expected neonatal lethality. In both cases, FOXF1 expression in lung tissue was higher than usually seen or expected in patients with similar deletions, suggesting an increased activity of the remaining allele of the enhancer. Sequencing of these alleles revealed two rare SNVs, rs150502618-A and rs79301423-T, mapping to the partially overlapping binding sites for TFAP2s and CTCF in the core region of the enhancer. Moreover, in a family with three histopathologically-diagnosed ACDMPV siblings whose missense FOXF1 mutation was inherited from the healthy non-mosaic carrier mother, we have identified a rare SNV rs28571077-A within 2-kb of the above-mentioned non-coding SNVs in the FOXF1 enhancer in the mother, that was absent in the affected newborns and 13 unrelated ACDMPV patients with CNV deletions of this genomic region. Based on the low population frequencies of these three variants, their absence in ACDMPV patients, the results of reporter assay, RNAi and EMSA experiments, and in silico predictions, we propose that the described SNVs might have acted on FOXF1 enhancer as hypermorphs.
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Affiliation(s)
- Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Qian Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Justyna A Karolak
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Xiaofei Song
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Nicole de Leeuw
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Brigitte Faas
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Romana Gerychova
- Department of Obstetrics and Gynecology, Masaryk University and University Hospital Brno, Brno, Czech Republic
| | - Petr Janku
- Department of Obstetrics and Gynecology, Masaryk University and University Hospital Brno, Brno, Czech Republic.,Department of Nursing and Midwifery, Masaryk University, Brno, Czech Republic
| | - Marta Jezova
- Department of Pathology, Masaryk University and University Hospital Brno, Brno, Czech Republic
| | - Iveta Valaskova
- Department of Medical Genetics, Masaryk University and University Hospital Brno, Brno, Czech Republic
| | | | - Lea F Surrey
- Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Department of Pathology and Laboratory Medicine, Perelman School of Medicine, Philadelphia, PA, USA
| | - Virginie Poisson
- CHU Sainte-Justine, Montreal, Québec, Canada.,Department of Pediatrics, Université de Montréal, Montreal, Québec, Canada
| | - Denis Bérubé
- CHU Sainte-Justine, Montreal, Québec, Canada.,Department of Pediatrics, Université de Montréal, Montreal, Québec, Canada
| | - Luc L Oligny
- CHU Sainte-Justine, Montreal, Québec, Canada.,Department of Pathology, Université de Montréal, Montreal, Québec, Canada
| | - Jacques L Michaud
- CHU Sainte-Justine, Montreal, Québec, Canada.,Department of Pediatrics, Université de Montréal, Montreal, Québec, Canada
| | - Edwina Popek
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA
| | - Paweł Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
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14
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Karolak JA, Bacolla A, Liu Q, Lantz PE, Petty J, Trapane P, Panzer K, Totapally BR, Niu Z, Xiao R, Xie NG, Wu LR, Szafranski P, Zhang DY, Stankiewicz P. A recurrent 8 bp frameshifting indel in FOXF1 defines a novel mutation hotspot associated with alveolar capillary dysplasia with misalignment of pulmonary veins. Am J Med Genet A 2019; 179:2272-2276. [PMID: 31436901 DOI: 10.1002/ajmg.a.61338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 12/11/2022]
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) is a rare lethal lung developmental disease. Affected infants manifest with severe respiratory distress and refractory pulmonary hypertension and uniformly die in the first month of life. Heterozygous point mutations or copy-number variant deletions involving FOXF1 and/or its upstream lung-specific enhancer on 16q24.1 have been identified in the vast majority of ACDMPV patients. We have previously described two unrelated families with a de novo pathogenic frameshift variant c.691_698del (p.Ala231Argfs*61) in the exon 1 of FOXF1. Here, we present a third unrelated ACDMPV family with the same de novo variant and propose that a direct tandem repeat of eight consecutive nucleotides GCGGCGGC within the ~4 kb CpG island in FOXF1 exon 1 is a novel mutation hotspot causative for ACDMPV.
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Affiliation(s)
- Justyna A Karolak
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas.,Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Albino Bacolla
- Department of Cancer Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.,Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Qian Liu
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Patrick E Lantz
- Department of Pathology, Wake Forest School of Medicine, Baptist Medical Center, Winston-Salem, North Carolina
| | - John Petty
- Department of General Surgery, Wake Forest School of Medicine, Baptist Medical Center, Winston-Salem, North Carolina
| | - Pamela Trapane
- Department of Pediatrics, Division of Pediatric Genetics, University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Karin Panzer
- Department of Pediatrics, University of Iowa Stead Family Children's Hospital, Iowa City, Iowa
| | - Balagangadhar R Totapally
- Department of Pediatrics, Florida International University, Nicklaus Children's Hospital, Miami, Florida
| | - Zhiyv Niu
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Nina G Xie
- Department of Bioengineering, Rice University, Houston, Texas
| | - Lucia R Wu
- Department of Bioengineering, Rice University, Houston, Texas
| | - Przemyslaw Szafranski
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas
| | - David Y Zhang
- Department of Bioengineering, Rice University, Houston, Texas
| | - Paweł Stankiewicz
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas
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15
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Edwards JJ, Murali C, Pogoriler J, Frank DB, Handler SS, Deardorff MA, Hopper RK. Histopathologic and Genetic Features of Alveolar Capillary Dysplasia with Atypical Late Presentation and Prolonged Survival. J Pediatr 2019; 210:214-219.e2. [PMID: 30853201 PMCID: PMC6592752 DOI: 10.1016/j.jpeds.2019.01.047] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 01/04/2019] [Accepted: 01/29/2019] [Indexed: 12/21/2022]
Abstract
Alveolar capillary dysplasia typically presents with neonatal pulmonary hypertension and early mortality. However, there is growing evidence for a subset of disease with atypical late onset and/or prolonged survival. Here, we present the variable clinical, genetic, and pathology findings of 4 such patients.
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Affiliation(s)
- Jonathan J. Edwards
- Division of Cardiology, the Children’s Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Chaya Murali
- Division of Genetics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jennifer Pogoriler
- Departments of Pathology and Laboratory Medicine. The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - David B. Frank
- Division of Cardiology, the Children’s Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA,Penn Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Stephanie S. Handler
- Children’s Hospital of Wisconsin, Medical College of Wisconsin, 9000 W. Wisconsin Ave, Milwaukee, WI, 53226, USA
| | - Mathew A. Deardorff
- Division of Genetics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Rachel K. Hopper
- Division of Cardiology, the Children’s Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA,Department of Pediatrics, Division of Pediatric Cardiology, Stanford University School of Medicine, Palo Alto, CA, 94304 USA
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16
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Schulze KV, Szafranski P, Lesmana H, Hopkin RJ, Hamvas A, Wambach JA, Shinawi M, Zapata G, Carvalho CMB, Liu Q, Karolak JA, Lupski JR, Hanchard NA, Stankiewicz P. Novel parent-of-origin-specific differentially methylated loci on chromosome 16. Clin Epigenetics 2019; 11:60. [PMID: 30961659 PMCID: PMC6454695 DOI: 10.1186/s13148-019-0655-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 03/13/2019] [Indexed: 03/20/2023] Open
Abstract
BACKGROUND Congenital malformations associated with maternal uniparental disomy of chromosome 16, upd(16)mat, resemble those observed in newborns with the lethal developmental lung disease, alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV). Interestingly, ACDMPV-causative deletions, involving FOXF1 or its lung-specific upstream enhancer at 16q24.1, arise almost exclusively on the maternally inherited chromosome 16. Given the phenotypic similarities between upd(16)mat and ACDMPV, together with parental allelic bias in ACDMPV, we hypothesized that there may be unknown imprinted loci mapping to chromosome 16 that become functionally unmasked by chromosomal structural variants. RESULTS To identify parent-of-origin biased DNA methylation, we performed high-resolution bisulfite sequencing of chromosome 16 on peripheral blood and cultured skin fibroblasts from individuals with maternal or paternal upd(16) as well as lung tissue from patients with ACDMPV-causative 16q24.1 deletions and a normal control. We identified 22 differentially methylated regions (DMRs) with ≥ 5 consecutive CpG methylation sites and varying tissue-specificity, including the known DMRs associated with the established imprinted gene ZNF597 and DMRs supporting maternal methylation of PRR25, thought to be paternally expressed in lymphoblastoid cells. Lastly, we found evidence of paternal methylation on 16q24.1 near LINC01082 mapping to the FOXF1 enhancer. CONCLUSIONS Using high-resolution bisulfite sequencing to evaluate DNA methylation across chromosome 16, we found evidence for novel candidate imprinted loci on chromosome 16 that would not be evident in array-based assays and could contribute to the birth defects observed in patients with upd(16)mat or in ACDMPV.
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Affiliation(s)
- Katharina V Schulze
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Harry Lesmana
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Robert J Hopkin
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Aaron Hamvas
- Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Jennifer A Wambach
- Division of Newborn Medicine, Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine, Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Gladys Zapata
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Claudia M B Carvalho
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Qian Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Justyna A Karolak
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital, Houston, TX, USA
| | - Neil A Hanchard
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
- USDA/ARS/Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA.
| | - Paweł Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
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17
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Slot E, Edel G, Cutz E, van Heijst A, Post M, Schnater M, Wijnen R, Tibboel D, Rottier R, de Klein A. Alveolar capillary dysplasia with misalignment of the pulmonary veins: clinical, histological, and genetic aspects. Pulm Circ 2018; 8:2045894018795143. [PMID: 30058937 PMCID: PMC6108021 DOI: 10.1177/2045894018795143] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 07/22/2018] [Indexed: 11/15/2022] Open
Abstract
Alveolar capillary dysplasia with misalignment of the pulmonary veins (ACD/MPV) is a rare and lethal disorder mainly involving the vascular development of the lungs. Since its first description, significant achievements in research have led to a better understanding of the underlying molecular mechanism of ACD/MPV and genetic studies have identified associations with genomic alterations in the locus of the transcription factor FOXF1. This in turn has increased the awareness among clinicians resulting in over 200 cases reported so far, including genotyping of patients in most recent reports. Collectively, this promoted a better stratification of the patient group, leading to new perspectives in research on the pathogenesis. Here, we provide an overview of the clinical aspects of ACD/MPV, including guidance for clinicians, and review the ongoing research into the complex molecular mechanism causing this severe lung disorder.
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Affiliation(s)
- Evelien Slot
- Department of Pediatric Surgery, Sophia
Children's Hospital, Erasmus University Medical Center, Rotterdam, The
Netherlands
- Department of Clinical Genetics, Erasmus
University Medical Center, Rotterdam, The Netherlands
| | - Gabriëla Edel
- Department of Pediatric Surgery, Sophia
Children's Hospital, Erasmus University Medical Center, Rotterdam, The
Netherlands
| | - Ernest Cutz
- Division of Pathology, Department of
Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, ON,
Canada
| | - Arno van Heijst
- Department of Neonatology, Radboud
University Medical Center –Amalia Children’s Hospital, Nijmegen, The
Netherlands
| | - Martin Post
- Department of Translational Medicine,
Hospital for Sick Children, Toronto, ON, Canada
| | - Marco Schnater
- Department of Pediatric Surgery, Sophia
Children's Hospital, Erasmus University Medical Center, Rotterdam, The
Netherlands
| | - René Wijnen
- Department of Pediatric Surgery, Sophia
Children's Hospital, Erasmus University Medical Center, Rotterdam, The
Netherlands
| | - Dick Tibboel
- Department of Pediatric Surgery, Sophia
Children's Hospital, Erasmus University Medical Center, Rotterdam, The
Netherlands
| | - Robbert Rottier
- Department of Pediatric Surgery, Sophia
Children's Hospital, Erasmus University Medical Center, Rotterdam, The
Netherlands
| | - Annelies de Klein
- Department of Clinical Genetics, Erasmus
University Medical Center, Rotterdam, The Netherlands
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18
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Abstract
The term 'interstitial lung disease' (ILD) refers to a group of disorders involving both the airspaces and tissue compartments of the lung, and these disorders are more accurately termed diffuse lung diseases. Although rare, they are associated with significant morbidity and mortality, with the prognosis depending upon the specific diagnosis. The major categories of ILD in children that present in the neonatal period include developmental disorders, growth disorders, surfactant dysfunction disorders, and specific conditions of unknown etiology unique to infancy. Whereas lung histopathology has been the gold standard for the diagnosis of ILD, as many of the disorders have a genetic basis, non-invasive diagnosis is feasible, and characteristic clinical and imaging features may allow for specific diagnosis in some circumstances. The underlying mechanisms, clinical, imaging, and lung pathology features and outcomes of ILD presenting in newborns are reviewed with an emphasis on genetic mechanisms and diagnosis.
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Affiliation(s)
- Lawrence M. Nogee
- Address: CMSC 6-104A, 600 N. Wolfe Street, Baltimore, MD 21287, USA. Tel.: +1 410 614-3355; fax: +1 410 614-8388.
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19
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Ma Y, Jang MA, Yoo HS, Ahn SY, Sung SI, Chang YS, Ki CS, Park WS. A Novel De Novo Pathogenic Variant in FOXF1 in a Newborn with Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins. Yonsei Med J 2017; 58:672-675. [PMID: 28332379 PMCID: PMC5368159 DOI: 10.3349/ymj.2017.58.3.672] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/29/2016] [Accepted: 03/18/2016] [Indexed: 11/27/2022] Open
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV) is an autosomal dominant, fatal developmental disorder of the lungs, with a mortality rate of about 100%. ACD/MPV is caused by mutations in FOXF1. Herein, we describe a newborn boy with ACD/MPV carrying a novel pathogenic variant of FOXF1. The patient developed respiratory distress and severe pulmonary hypertension on the first day of life. Despite aggressive cardiorespiratory management, including veno-venous extracorporeal membrane oxygenation, his condition deteriorated rapidly, and he died within the first month of his life. Lung histology showed the characteristic features of ACD/MPV at autopsy. Sequence analysis of FOXF1 from genomic DNA obtained from autopsied lung tissue revealed that the patient was heterozygous for a novel missense variant (c.305T>C; p.Leu102Pro). Further analysis of both parents confirmed the de novo occurrence of the variant. To the best of our knowledge, this is the first report of genetically confirmed ACD/MPV in Korea.
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Affiliation(s)
- Youngeun Ma
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mi Ae Jang
- Department of Laboratory Medicine and Genetics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Hye Soo Yoo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - So Yoon Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Se In Sung
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yun Sil Chang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chang Seok Ki
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Won Soon Park
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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20
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Everett KV, Ataliotis P, Chioza BA, Shaw-Smith C, Chung EMK. A novel missense mutation in the transcription factor FOXF1 cosegregating with infantile hypertrophic pyloric stenosis in the extended pedigree linked to IHPS5 on chromosome 16q24. Pediatr Res 2017; 81:632-638. [PMID: 27855150 DOI: 10.1038/pr.2016.244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 09/19/2016] [Indexed: 11/09/2022]
Abstract
BACKGROUND The aim was to identify susceptibility alleles for infantile hypertrophic pyloric stenosis (IHPS) in a pedigree previously linked to IHPS5 on chromosome 16q24. METHODS We screened the positional and functional candidate gene FOXF1 by Sanger sequencing in a single affected individual. All family members for whom DNA was available were genotyped to determine cosegregation status of the putative causal variant. Immunofluorescence studies were performed to compare the cellular localization of wildtype and mutant form of the protein. Transcriptional activity was compared using a luciferase assay. RESULTS A single novel substitution in FOXF1 (c.416G>A) predicted to result in a missense mutation (R139Q) was shown to cosegregate with disease trait. It was not seen in 560 control chromosomes nor has it been reported in ExAC or ESP. The R139Q substitution affects a conserved arginine residue within the DNA-binding domain of FOXF1. The transcriptional activity of the mutant FOXF1 protein is significantly reduced in comparison to wild-type. CONCLUSION These results provide strong evidence that the R139Q substitution in FOXF1 causes IHPS in this family and imply a novel pathological pathway for the condition. They further support a role for FOXF1 in the regulation of embryonic and neonatal development of the gastro-intestinal tract.
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Affiliation(s)
- Kate V Everett
- Cell Biology and Genetics Research Centre, St George's University of London, London, UK
| | - Paris Ataliotis
- Cell Biology and Genetics Research Centre, St George's University of London, London, UK
| | | | - Charles Shaw-Smith
- Peninsula College of Medicine and Dentistry, Universities of Exeter and Plymouth, Exeter, UK
| | - Eddie M K Chung
- Institute of Child Health, University College London, London, UK
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21
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Reiter J, Szafranski P, Breuer O, Perles Z, Dagan T, Stankiewicz P, Kerem E. Variable phenotypic presentation of a novel FOXF1 missense mutation in a single family. Pediatr Pulmonol 2016; 51:921-7. [PMID: 27145217 DOI: 10.1002/ppul.23425] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/05/2016] [Accepted: 03/05/2016] [Indexed: 11/11/2022]
Abstract
BACKGROUND Heterozygous mutations in the FOXF1 transcription factor gene are implicated in alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV), a developmental disorder of the lungs classically presenting with pulmonary hypertension and early demise. Evidence has suggested haploinsufficiency and partial paternal imprinting. We present a family with several affected members with an extremely variable phenotype. PATIENTS The index patient presented several hours after birth with severe pulmonary hypertension. She is now 3-years old, thriving on maximal pulmonary hypertension therapy, chronic steroids, and oxygen. One of the patient's siblings died at 16 days with pulmonary hypertension and an annular pancreas, consistent with classical ACDMPV. METHODS Whole exome sequencing was performed in the index case. The identified variant was confirmed by Sanger sequencing, and tested in the remaining family members. Parental origin was determined by PCR amplification and cloning, sequencing, and identification of adjacent single nucleotide polymorphisms. Echocardiography was performed in the asymptomatic carriers. RESULTS Whole exome analysis revealed a novel, predictably pathogenic heterozygous missense mutation, g.chr16:86544406 C>A NM_001451, c.C231A, p.F77L, in the FOXF1 gene. The mutation arose in the father, de novo, early postzygotically, with 70% somatic mosaicism in the blood, on the grandpaternal chromosome. It was also present in the proband's asymptomatic sister, found to have partial anomalous pulmonary venous return. CONCLUSION FOXF1 mutations may have an extremely variable phenotype, possibly as a result of somatic mosaicism and complex gene regulation including unorthodox imprinting of the gene locus. The prolonged survival of the proband suggests the need for aggressive treatment. Pediatr Pulmonol. 2016; 51:921-927. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Joel Reiter
- Pediatric Pulmonary Unit, Division of Pediatrics, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Oded Breuer
- Pediatric Pulmonary Unit, Division of Pediatrics, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Zeev Perles
- Pediatric Cardiology Department, Division of Pediatrics, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Tamir Dagan
- Pediatric Cardiology Institute, Department of Pediatrics, Schneider Childrens' Medical Center, Petach Tikvah, Israel
| | - Paweł Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Eitan Kerem
- Pediatric Pulmonary Unit, Division of Pediatrics, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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Luk HM, Tang T, Choy KWR, Tong MFT, Wong OK, Lo FMI. Maternal somatic mosaicism ofFOXF1mutation causes recurrent alveolar capillary dysplasia with misalignment of pulmonary veins in siblings. Am J Med Genet A 2016; 170:1942-4. [DOI: 10.1002/ajmg.a.37660] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 03/29/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Ho Ming Luk
- Department of Health; Clinical Genetic Service; Hong Kong China
| | - Tao Tang
- Department of Obstetrics and Gynaecology; The Chinese University of Hong Kong; Hong Kong China
| | - Kwong Wai Richard Choy
- Department of Obstetrics and Gynaecology; The Chinese University of Hong Kong; Hong Kong China
| | | | - On Kit Wong
- Department of Pathology; Queen Elizabeth Hospital; Hong Kong China
| | - Fai Man Ivan Lo
- Department of Health; Clinical Genetic Service; Hong Kong China
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23
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Pathogenetics of alveolar capillary dysplasia with misalignment of pulmonary veins. Hum Genet 2016; 135:569-586. [PMID: 27071622 DOI: 10.1007/s00439-016-1655-9] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 03/10/2016] [Indexed: 10/22/2022]
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) is a lethal lung developmental disorder caused by heterozygous point mutations or genomic deletion copy-number variants (CNVs) of FOXF1 or its upstream enhancer involving fetal lung-expressed long noncoding RNA genes LINC01081 and LINC01082. Using custom-designed array comparative genomic hybridization, Sanger sequencing, whole exome sequencing (WES), and bioinformatic analyses, we studied 22 new unrelated families (20 postnatal and two prenatal) with clinically diagnosed ACDMPV. We describe novel deletion CNVs at the FOXF1 locus in 13 unrelated ACDMPV patients. Together with the previously reported cases, all 31 genomic deletions in 16q24.1, pathogenic for ACDMPV, for which parental origin was determined, arose de novo with 30 of them occurring on the maternally inherited chromosome 16, strongly implicating genomic imprinting of the FOXF1 locus in human lungs. Surprisingly, we have also identified four ACDMPV families with the pathogenic variants in the FOXF1 locus that arose on paternal chromosome 16. Interestingly, a combination of the severe cardiac defects, including hypoplastic left heart, and single umbilical artery were observed only in children with deletion CNVs involving FOXF1 and its upstream enhancer. Our data demonstrate that genomic imprinting at 16q24.1 plays an important role in variable ACDMPV manifestation likely through long-range regulation of FOXF1 expression, and may be also responsible for key phenotypic features of maternal uniparental disomy 16. Moreover, in one family, WES revealed a de novo missense variant in ESRP1, potentially implicating FGF signaling in the etiology of ACDMPV.
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Dello Russo P, Franzoni A, Baldan F, Puppin C, De Maglio G, Pittini C, Cattarossi L, Pizzolitto S, Damante G. A 16q deletion involving FOXF1 enhancer is associated to pulmonary capillary hemangiomatosis. BMC MEDICAL GENETICS 2015; 16:94. [PMID: 26462560 PMCID: PMC4605103 DOI: 10.1186/s12881-015-0241-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 10/04/2015] [Indexed: 12/27/2022]
Abstract
BACKGROUND Pulmonary capillary hemangiomatosis (PCH) is an uncommon pulmonary disorder, with variable clinical features depending on which lung structure is affected, and it is usually linked to pulmonary arterial hypertension. Congenital PCH has been very rarely described and, so far, the only causative gene identified is EIF2AK4, which encodes for a translation initiation factor. However, not all PCH cases might carry a mutation in this gene. CASE PRESENTATION We report the clinical and cytogenetic characterization of a patient (male, newborn, first child of healthy non-consanguineous parents) died after three days of life with severe neonatal pulmonary hypertension, due to diffuse capillary hemangiomatosis diagnosed post mortem. Conventional karyotyping, Microarray-Based Comparative Genomic Hydridization (CGHa) and quantitative PCR were performed. CGHa revealed a heterozygous chromosome 16q23.3q24.1 interstitial deletion, spanning about 2.6 Mb and involving a FOXF1 gene enhancer. Quantitative PCR showed that the proband's deletion was de novo. Microsatellite analysis demonstrate that the deletion occurred in the maternal chromosome 16. CONCLUSION FOXF1 loss of function mutation have been so far identified in alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV), a lung disease different from PCH. Our data suggest the hypothesis that disruption of the FOXF1 gene enhancer could be a genetic determinant of PCH. Moreover, our findings support the idea that FOXF1 is a paternally imprinted gene.
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Affiliation(s)
- Patrizia Dello Russo
- Dipartimento di Medicina di Laboratorio, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy.
| | - Alessandra Franzoni
- Dipartimento di Medicina di Laboratorio, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy.
| | - Federica Baldan
- Dipartimento di Scienze Mediche e Biologiche, Università di Udine, Piazzale Kolbe 4, 33100, Udine, Italy.
| | - Cinzia Puppin
- Dipartimento di Scienze Mediche e Biologiche, Università di Udine, Piazzale Kolbe 4, 33100, Udine, Italy.
| | - Giovanna De Maglio
- Dipartimento di Medicina di Laboratorio, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy.
| | - Carla Pittini
- Dipartimento Materno-infantile, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy.
| | - Luigi Cattarossi
- Dipartimento Materno-infantile, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy.
| | - Stefano Pizzolitto
- Dipartimento di Medicina di Laboratorio, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy.
| | - Giuseppe Damante
- Dipartimento di Medicina di Laboratorio, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy. .,Dipartimento di Scienze Mediche e Biologiche, Università di Udine, Piazzale Kolbe 4, 33100, Udine, Italy.
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Kitazawa H, Kure S. Interstitial Lung Disease in Childhood: Clinical and Genetic Aspects. CLINICAL MEDICINE INSIGHTS-CIRCULATORY RESPIRATORY AND PULMONARY MEDICINE 2015; 9:57-68. [PMID: 26512209 PMCID: PMC4603523 DOI: 10.4137/ccrpm.s23282] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/12/2015] [Accepted: 08/19/2015] [Indexed: 12/16/2022]
Abstract
Interstitial lung disease (ILD) in childhood is a heterogeneous group of rare pulmonary conditions presenting chronic respiratory disorders. Many clinical features of ILD still remain unclear, making the treatment strategies mainly investigative. Guidelines may provide physicians with an overview on the diagnosis and therapeutic directions. However, the criteria used in different clinical studies for the classification and diagnosis of ILDs are not always the same, making the development of guidelines difficult. Advances in genetic testing have thrown light on some etiologies of ILD, which were formerly classified as ILDs of unknown origins. The need of genetic testing for unexplained ILD is growing, and new classification criteria based on the etiology should be adopted to better understand the disease. The purpose of this review is to give an overview of the clinical and genetic aspects of ILD in children.
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Affiliation(s)
- Hiroshi Kitazawa
- Department of General Pediatrics, Division of Allergy, Miyagi Children's Hospital, Sendai, Japan
| | - Shigeo Kure
- Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan
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26
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Levine MT, Vander Wende HM, Malik HS. Mitotic fidelity requires transgenerational action of a testis-restricted HP1. eLife 2015; 4:e07378. [PMID: 26151671 PMCID: PMC4491702 DOI: 10.7554/elife.07378] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Accepted: 06/08/2015] [Indexed: 01/02/2023] Open
Abstract
Sperm-packaged DNA must undergo extensive reorganization to ensure its timely participation in embryonic mitosis. Whereas maternal control over this remodeling is well described, paternal contributions are virtually unknown. In this study, we show that Drosophila melanogaster males lacking Heterochromatin Protein 1E (HP1E) sire inviable embryos that undergo catastrophic mitosis. In these embryos, the paternal genome fails to condense and resolve into sister chromatids in synchrony with the maternal genome. This delay leads to a failure of paternal chromosomes, particularly the heterochromatin-rich sex chromosomes, to separate on the first mitotic spindle. Remarkably, HP1E is not inherited on mature sperm chromatin. Instead, HP1E primes paternal chromosomes during spermatogenesis to ensure faithful segregation post-fertilization. This transgenerational effect suggests that maternal control is necessary but not sufficient for transforming sperm DNA into a mitotically competent pronucleus. Instead, paternal action during spermiogenesis exerts post-fertilization control to ensure faithful chromosome segregation in the embryo. DOI:http://dx.doi.org/10.7554/eLife.07378.001 The genetic information of cells is packaged into structures called chromosomes, which are made up of long strands of DNA that are wrapped around proteins to form a structure called chromatin. The cells of most animals contain two copies of every chromosome, but the egg and sperm cells contain only one copy. This means that when an egg fuses with a sperm cell during fertilization, the resulting ‘zygote’ will contain two copies of each chromosome—one inherited from the mother, and one from the father. These chromosomes duplicate and divide many times within the developing embryo in a process known as mitosis. The first division of the zygote is particularly complicated, as the egg and sperm chromosomes must go through extensive—and yet different—chromatin reorganization processes. For instance, paternal DNA is inherited via sperm, where specialized sperm proteins package the DNA more tightly than in the maternal DNA, which is packaged by histone proteins used throughout development. For paternal DNA to participate in mitosis in the embryo, it must first undergo a transition to a histone-packaged state. Despite these differences, both maternal and paternal chromosomes must undergo mitosis at the same time if the zygote is to successfully divide. Although it is known that the egg cell contributes essential proteins that are incorporated into the sperm chromatin to help it reorganize, the importance of paternal proteins in coordinating this process remains poorly understood. Many members of a family of proteins called Heterochromatin Protein 1 (or HP1 for short) have previously been shown to control chromatin organization in plants and animals. In 2012, researchers found that several HP1 proteins are found only in the testes of the fruit fly species Drosophila melanogaster. They predicted that these proteins might help control the reorganization of the paternal chromosomes following fertilization. Levine et al.—including researchers involved in the 2012 study—have now used genetic and cell-based techniques to show that one member of the HP1 family (called HP1E) ensures that the paternal chromosomes are ready for cell division at the same time as the maternal chromosomes. Male flies that are unable to produce this protein do not have any offspring because, while these flies' sperm can fertilize eggs, the resulting zygotes cannot divide as normal. Further experiments revealed that HP1E is not inherited through the chromatin of mature sperm, but instead influences the structure of the chromosomes during the final stages of the development of the sperm cells in the fly testes. This study shows that both maternal and paternal proteins are needed to control how the paternal chromosomes reorganize in fruit fly embryos. Although difficult to discover and decipher, this work re-emphasizes the importance of paternal epigenetic contributions—changes that alter how DNA is read, without changing the DNA sequence itself—for ensuring the viability of resulting offspring. Future work will reveal both the molecular mechanism of this epigenetic transfer of information, as well as why certain Drosophila species are able to naturally overcome the loss of the essential HP1E protein. DOI:http://dx.doi.org/10.7554/eLife.07378.002
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Affiliation(s)
- Mia T Levine
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, United States
| | - Helen M Vander Wende
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, United States
| | - Harmit S Malik
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, United States
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27
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Dharmadhikari AV, Szafranski P, Kalinichenko VV, Stankiewicz P. Genomic and Epigenetic Complexity of the FOXF1 Locus in 16q24.1: Implications for Development and Disease. Curr Genomics 2015; 16:107-16. [PMID: 26085809 PMCID: PMC4467301 DOI: 10.2174/1389202916666150122223252] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/09/2015] [Accepted: 01/21/2015] [Indexed: 01/01/2023] Open
Abstract
The FOXF1 (Forkhead box F1) gene, located on chromosome 16q24.1 encodes a member of the FOX family of transcription factors characterized by a distinct forkhead DNA binding domain. FOXF1 plays an important role in epithelium-mesenchyme signaling, as a downstream target of Sonic hedgehog pathway. Heterozygous point mutations and genomic deletions involving FOXF1 have been reported in newborns with a lethal lung developmental disorder, Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins (ACDMPV). In addition, genomic deletions upstream to FOXF1 identified in ACDMPV patients have revealed that FOXF1 expression is tightly regulated by distal tissue-specific enhancers. Interestingly, FOXF1 has been found to be incompletely paternally imprinted in human lungs; characterized genomic deletions arose de novo exclusively on maternal chromosome 16, with most of them being Alu-Alu mediated. Regulation of FOXF1 expression likely utilizes a combination of chromosomal looping, differential methylation of an upstream CpG island overlapping GLI transcription factor binding sites, and the function of lung-specific long non-coding RNAs (lncRNAs). FOXF1 knock-out mouse models demonstrated its critical role in mesoderm differentiation and in the development of pulmonary vasculature. Additionally, epigenetic inactivation of FOXF1 has been reported in breast and colorectal cancers, whereas overexpression of FOXF1 has been associated with a number of other human cancers, e.g. medulloblastoma and rhabdomyosarcoma. Constitutional duplications of FOXF1 have recently been reported in congenital intestinal malformations. Thus, understanding the genomic and epigenetic complexity at the FOXF1 locus will improve diagnosis, prognosis, and treatment of ACDMPV and other human disorders associated with FOXF1 alterations.
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Affiliation(s)
- Avinash V Dharmadhikari
- Department of Molecular and Human Genetics; ; Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, USA
| | | | - Vladimir V Kalinichenko
- Divisions of Pulmonary Biology and Developmental Biology, Perinatal Institute, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - Pawel Stankiewicz
- Department of Molecular and Human Genetics; ; Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, USA
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28
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Geddes GC, Dimmock DP, Hehir DA, Helbling DC, Kirkpatrick E, Loomba R, Southern J, Waknitz M, Scharer G, Konduri GG. A novel FOXF1 mutation associated with alveolar capillary dysplasia and coexisting colobomas and hemihyperplasia. J Perinatol 2015; 35:155-7. [PMID: 25627281 DOI: 10.1038/jp.2014.187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 09/01/2014] [Accepted: 09/02/2014] [Indexed: 11/09/2022]
Abstract
Alveolar capillary dysplasia (ACD) is a rare and lethal cause of hypoxic respiratory failure in the neonate. Here we describe a term neonate with ACD that was found with a previously unreported p.Arg86Pro mutation in the FOXF1 (Forkhead Box-F1) gene and coexisting congenital anomalies, including colobomas of the iris and hemihyperplasia. This unique clinical presentation may indicate a novel, yet unconfirmed disease association for mutations in the FOXF1 gene. Rapid mutation analysis in FOXF1 may provide noninvasive early confirmation of ACD in neonates with respiratory failure and can aid in clinical decision making.
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Affiliation(s)
- G C Geddes
- 1] Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA [2] Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - D P Dimmock
- 1] Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA [2] Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - D A Hehir
- Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA
| | - D C Helbling
- Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - E Kirkpatrick
- Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA
| | - R Loomba
- Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA
| | - J Southern
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - M Waknitz
- Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - G Scharer
- 1] Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA [2] Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - G G Konduri
- Department of Pediatrics and Children's Research Institute of Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, WI, USA
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Benevides GN, Picciarelli de Lima P, Felipe-Silva A, Lovisolo SM, Pereira de Melo AMAG. Recurrence of alveolar capillary dysplasia with misalignment of pulmonary veins in two consecutive siblings. Autops Case Rep 2015; 5:21-7. [PMID: 26484320 PMCID: PMC4608164 DOI: 10.4322/acr.2014.045] [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: 11/19/2014] [Accepted: 02/13/2015] [Indexed: 11/28/2022]
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV) is a rare, developmental lung disorder, which has been increasingly reported. This entity usually presents as neonatal persistent pulmonary hypertension that is unresponsive to treatment, and is known to be uniformly fatal. Recent discoveries in the genetic field, and intensive treatments, may change the natural course of this disease, permitting easier diagnosis and giving new hope for the dismal prognosis. The authors present two cases of siblings, with two years of difference, from different fathers - one of them was a first-degree and the other a second-degree cousin of the mother. Both patients were full-term babies born apparently without malformations and were sent to the nursery. Both siblings near 35 hours of age presented severe respiratory failure due to pulmonary hypertension. The outcome was fatal in both cases and at autopsy ACD/MPV was diagnosed. The authors call attention to this entity in the differential diagnosis of acute respiratory distress in early life.
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Affiliation(s)
- Gabriel Nuncio Benevides
- Department of Pediatrics - Childrens Institute - Hospital das Clínicas - Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Patricia Picciarelli de Lima
- Department of Pathology - Hospital das Clínicas - Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Aloisio Felipe-Silva
- Anatomy Pathology Service - Hospital Universitário - Universidade de São Paulo, São Paulo/SP, Brazil
| | - Silvana Maria Lovisolo
- Anatomy Pathology Service - Hospital Universitário - Universidade de São Paulo, São Paulo/SP, Brazil
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30
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Dharmadhikari AV, Gambin T, Szafranski P, Cao W, Probst FJ, Jin W, Fang P, Gogolewski K, Gambin A, George-Abraham JK, Golla S, Boidein F, Duban-Bedu B, Delobel B, Andrieux J, Becker K, Holinski-Feder E, Cheung SW, Stankiewicz P. Molecular and clinical analyses of 16q24.1 duplications involving FOXF1 identify an evolutionarily unstable large minisatellite. BMC MEDICAL GENETICS 2014; 15:128. [PMID: 25472632 PMCID: PMC4411736 DOI: 10.1186/s12881-014-0128-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 11/18/2014] [Indexed: 11/10/2022]
Abstract
Background Point mutations or genomic deletions of FOXF1 result in a lethal developmental lung disease Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins. However, the clinical consequences of the constitutively increased dosage of FOXF1 are unknown. Methods Copy-number variations and their parental origin were identified using a combination of array CGH, long-range PCR, DNA sequencing, and microsatellite analyses. Minisatellite sequences across different species were compared using a gready clustering algorithm and genome-wide analysis of the distribution of minisatellite sequences was performed using R statistical software. Results We report four unrelated families with 16q24.1 duplications encompassing entire FOXF1. In a 4-year-old boy with speech delay and a café-au-lait macule, we identified an ~15 kb 16q24.1 duplication inherited from the reportedly healthy father, in addition to a de novo ~1.09 Mb mosaic 17q11.2 NF1 deletion. In a 13-year-old patient with autism and mood disorder, we found an ~0.3 Mb duplication harboring FOXF1 and an ~0.5 Mb 16q23.3 duplication, both inherited from the father with bipolar disorder. In a 47-year old patient with pyloric stenosis, mesenterium commune, and aplasia of the appendix, we identified an ~0.4 Mb duplication in 16q24.1 encompassing 16 genes including FOXF1. The patient transmitted the duplication to her daughter, who presented with similar symptoms. In a fourth patient with speech and motor delay, and borderline intellectual disability, we identified an ~1.7 Mb FOXF1 duplication adjacent to a large minisatellite. This duplication has a complex structure and arose de novo on the maternal chromosome, likely as a result of a DNA replication error initiated by the adjacent large tandem repeat. Using bioinformatic and array CGH analyses of the minisatellite, we found a large variation of its size in several different species and individuals, demonstrating both its evolutionarily instability and population polymorphism. Conclusions Our data indicate that constitutional duplication of FOXF1 in humans is not associated with any pediatric lung abnormalities. We propose that patients with gut malrotation, pyloric or duodenal stenosis, and gall bladder agenesis should be tested for FOXF1 alterations. We suggest that instability of minisatellites greater than 1 kb can lead to structural variation due to DNA replication errors. Electronic supplementary material The online version of this article (doi:10.1186/s12881-014-0128-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Avinash V Dharmadhikari
- Interdepartmental Program in Translational Biology & Molecular Medicine, Baylor College of Medicine, Houston, TX, USA. .,Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Tomasz Gambin
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Wenjian Cao
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Frank J Probst
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Weihong Jin
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Ping Fang
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | | | - Anna Gambin
- Institute of Informatics, University of Warsaw, Warsaw, Poland. .,Mossakowski Medical Research Center, Polish Academy of Sciences, Warsaw, Poland.
| | | | - Sailaja Golla
- Departments of Pediatrics and Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Francoise Boidein
- Neuropediatrics Service, Saint Vincent de Paul Catholic Hospitals Association of Lille, Free Faculty of Medicine, Lille, France.
| | - Benedicte Duban-Bedu
- Cytogenetics Service, Saint Vincent de Paul Catholic Hospitals Association of Lille, Free Faculty of Medicine, Lille, France.
| | - Bruno Delobel
- Cytogenetics Service, Saint Vincent de Paul Catholic Hospitals Association of Lille, Free Faculty of Medicine, Lille, France.
| | - Joris Andrieux
- Laboratory of Medical Genetics, University Hospital, Lille, France.
| | | | | | - Sau Wai Cheung
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Pawel Stankiewicz
- Interdepartmental Program in Translational Biology & Molecular Medicine, Baylor College of Medicine, Houston, TX, USA. .,Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
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31
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Szafranski P, Dharmadhikari AV, Wambach JA, Towe CT, White FV, Grady RM, Eghtesady P, Cole FS, Deutsch G, Sen P, Stankiewicz P. Two deletions overlapping a distant FOXF1 enhancer unravel the role of lncRNA LINC01081 in etiology of alveolar capillary dysplasia with misalignment of pulmonary veins. Am J Med Genet A 2014; 164A:2013-9. [PMID: 24842713 PMCID: PMC4107046 DOI: 10.1002/ajmg.a.36606] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 04/14/2014] [Indexed: 01/18/2023]
Abstract
Position effects due to disruption of distant cis-regulatory regions have been reported for over 40 human gene loci; however, the underlying mechanisms of long-range gene regulation remain largely unknown. We report on two patients with alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) caused by overlapping genomic deletions that included a distant FOXF1 transcriptional enhancer mapping 0.3 Mb upstream to FOXF1 on 16q24.1. In one patient with atypical late-onset ACDMPV, a ∼1.5 Mb deletion removed the proximal 43% of this enhancer, leaving the lung-specific long non-coding RNA (lncRNA) gene LINC01081 intact. In the second patient with severe neonatal-onset ACDMPV, an overlapping ∼194 kb deletion disrupted LINC01081. Both deletions arose de novo on maternal copy of the chromosome 16, supporting the notion that FOXF1 is paternally imprinted in the human lungs. RNAi-mediated knock-down of LINC01081 in normal fetal lung fibroblasts showed that this lncRNA positively regulates FOXF1 transcript level, further indicating that decrease in LINC01081 expression can contribute to development of ACDMPV.
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Affiliation(s)
- Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Avinash V. Dharmadhikari
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, USA
| | | | | | | | | | - Pirooz Eghtesady
- Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Gail Deutsch
- Department of Pathology, Seattle Children’s Hospital, Seattle, WA
| | - Partha Sen
- Department of Pediatrics – Newborn, Baylor College of Medicine, Houston, TX, USA
| | - Pawel Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, USA
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Sen P, Dharmadhikari AV, Majewski T, Mohammad MA, Kalin TV, Zabielska J, Ren X, Bray M, Brown HM, Welty S, Thevananther S, Langston C, Szafranski P, Justice MJ, Kalinichenko VV, Gambin A, Belmont J, Stankiewicz P. Comparative analyses of lung transcriptomes in patients with alveolar capillary dysplasia with misalignment of pulmonary veins and in foxf1 heterozygous knockout mice. PLoS One 2014; 9:e94390. [PMID: 24722050 PMCID: PMC3983164 DOI: 10.1371/journal.pone.0094390] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 03/14/2014] [Indexed: 12/24/2022] Open
Abstract
Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins (ACDMPV) is a developmental disorder of the lungs, primarily affecting their vasculature. FOXF1 haploinsufficiency due to heterozygous genomic deletions and point mutations have been reported in most patients with ACDMPV. The majority of mice with heterozygous loss-of-function of Foxf1 exhibit neonatal lethality with evidence of pulmonary hemorrhage in some of them. By comparing transcriptomes of human ACDMPV lungs with control lungs using expression arrays, we found that several genes and pathways involved in lung development, angiogenesis, and in pulmonary hypertension development, were deregulated. Similar transcriptional changes were found in lungs of the postnatal day 0.5 Foxf1+/− mice when compared to their wildtype littermate controls; 14 genes, COL15A1, COL18A1, COL6A2, ESM1, FSCN1, GRINA, IGFBP3, IL1B, MALL, NOS3, RASL11B, MATN2, PRKCDBP, and SIRPA, were found common to both ACDMPV and Foxf1 heterozygous lungs. Our results advance knowledge toward understanding of the molecular mechanism of ACDMPV, lung development, and its vasculature pathology. These data may also be useful for understanding etiologies of other lung disorders, e.g. pulmonary hypertension, bronchopulmonary dysplasia, or cancer.
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Affiliation(s)
- Partha Sen
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
- * E-mail: (P. Sen); (P. Stankiewicz)
| | - Avinash V. Dharmadhikari
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Tadeusz Majewski
- Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Mahmoud A. Mohammad
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Tanya V. Kalin
- Division of Pulmonary Biology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, United States of America
| | | | - Xiaomeng Ren
- Division of Pulmonary Biology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, United States of America
| | - Molly Bray
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Hannah M. Brown
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Robinson Research Institute, School of Pediatrics and Reproductive Health, University of Adelaide, Adelaide, Australia
| | - Stephen Welty
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Sundararajah Thevananther
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Claire Langston
- Department of Pathology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Przemyslaw Szafranski
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Monica J. Justice
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Vladimir V. Kalinichenko
- Division of Pulmonary Biology, Cincinnati Children's Hospital Research Foundation, Cincinnati, Ohio, United States of America
| | - Anna Gambin
- Institute of Informatics, University of Warsaw, Warsaw, Poland
- Mossakowski Medical Research Center, Polish Academy of Sciences, Warsaw, Poland
| | - John Belmont
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Pawel Stankiewicz
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas, United States of America
- * E-mail: (P. Sen); (P. Stankiewicz)
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Sen P, Yang Y, Navarro C, Silva I, Szafranski P, Kolodziejska KE, Dharmadhikari AV, Mostafa H, Kozakewich H, Kearney D, Cahill JB, Whitt M, Bilic M, Margraf L, Charles A, Goldblatt J, Gibson K, Lantz PE, Garvin AJ, Petty J, Kiblawi Z, Zuppan C, McConkie-Rosell A, McDonald MT, Peterson-Carmichael SL, Gaede JT, Shivanna B, Schady D, Friedlich PS, Hays SR, Palafoll IV, Siebers-Renelt U, Bohring A, Finn LS, Siebert JR, Galambos C, Nguyen L, Riley M, Chassaing N, Vigouroux A, Rocha G, Fernandes S, Brumbaugh J, Roberts K, Ho-Ming L, Lo IFM, Lam S, Gerychova R, Jezova M, Valaskova I, Fellmann F, Afshar K, Giannoni E, Muhlethaler V, Liang J, Beckmann JS, Lioy J, Deshmukh H, Srinivasan L, Swarr DT, Sloman M, Shaw-Smith C, van Loon RL, Hagman C, Sznajer Y, Barrea C, Galant C, Detaille T, Wambach JA, Cole FS, Hamvas A, Prince LS, Diderich KEM, Brooks AS, Verdijk RM, Ravindranathan H, Sugo E, Mowat D, Baker ML, Langston C, Welty S, Stankiewicz P. Novel FOXF1 mutations in sporadic and familial cases of alveolar capillary dysplasia with misaligned pulmonary veins imply a role for its DNA binding domain. Hum Mutat 2013; 34:801-11. [PMID: 23505205 PMCID: PMC3663886 DOI: 10.1002/humu.22313] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 02/22/2013] [Indexed: 11/11/2022]
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV) is a rare and lethal developmental disorder of the lung defined by a constellation of characteristic histopathological features. Nonpulmonary anomalies involving organs of gastrointestinal, cardiovascular, and genitourinary systems have been identified in approximately 80% of patients with ACD/MPV. We have collected DNA and pathological samples from more than 90 infants with ACD/MPV and their family members. Since the publication of our initial report of four point mutations and 10 deletions, we have identified an additional 38 novel nonsynonymous mutations of FOXF1 (nine nonsense, seven frameshift, one inframe deletion, 20 missense, and one no stop). This report represents an up to date list of all known FOXF1 mutations to the best of our knowledge. Majority of the cases are sporadic. We report four familial cases of which three show maternal inheritance, consistent with paternal imprinting of the gene. Twenty five mutations (60%) are located within the putative DNA-binding domain, indicating its plausible role in FOXF1 function. Five mutations map to the second exon. We identified two additional genic and eight genomic deletions upstream to FOXF1. These results corroborate and extend our previous observations and further establish involvement of FOXF1 in ACD/MPV and lung organogenesis.
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Affiliation(s)
- Partha Sen
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA.
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Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins (ACD/MPV): A Case Series. Case Rep Crit Care 2013; 2013:327250. [PMID: 24829819 PMCID: PMC4009999 DOI: 10.1155/2013/327250] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Accepted: 12/12/2012] [Indexed: 11/28/2022] Open
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV) is a rare, fatal, developmental lung disorder, which usually presents as persistent pulmonary hypertension of the newborn (PPHN) unresponsive to treatment. The authors present their own experience with three cases admitted during the last 15 years.
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Miranda J, Rocha G, Soares P, Morgado H, Baptista MJ, Azevedo I, Fernandes S, Brandão O, Sen P, Guimarães H. A novel mutation in FOXF1 gene associated with alveolar capillary dysplasia with misalignment of pulmonary veins, intestinal malrotation and annular pancreas. Neonatology 2013; 103:241-5. [PMID: 23407133 DOI: 10.1159/000346062] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 11/21/2012] [Indexed: 11/19/2022]
Abstract
Alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV) is a rare, fatal, neonatal developmental lung disorder, which usually presents as persistent pulmonary hypertension unresponsive to treatment. The authors report the case of a neonate with persistent pulmonary hypertension, associated with duodenal stenosis secondary to annular pancreas and intestinal malrotation. Support treatment, inhaled nitric oxide, oral sildenafil and nebulized iloprost were used with no clinical improvement. The neonate presented an overwhelming course, with hypoxemia refractory to treatment. At autopsy lung histology showed the characteristic features of ACD/MPV. DNA sequence analysis revealed a heterozygous nonsense mutation c.539C>A;p.S180X, in the first exon of FOXF1. FOXF1 has been identified as one of the genes responsible for ACD/MPV associated with multiple congenital malformations. This clinical case is the first report of a heterozygous nonsense mutation c.539C>A;p.S180X in the first exon of FOXF1, in a patient with ACD/MPV associated with annular pancreas and intestinal malrotation.
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Affiliation(s)
- Joana Miranda
- Division of Neonatology, Centro Hospitalar de São João, Faculty of Medicine of Porto University, Porto, Portugal.
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Szafranski P, Dharmadhikari AV, Brosens E, Gurha P, Kolodziejska KE, Zhishuo O, Dittwald P, Majewski T, Mohan KN, Chen B, Person RE, Tibboel D, de Klein A, Pinner J, Chopra M, Malcolm G, Peters G, Arbuckle S, Guiang SF, Hustead VA, Jessurun J, Hirsch R, Witte DP, Maystadt I, Sebire N, Fisher R, Langston C, Sen P, Stankiewicz P. Small noncoding differentially methylated copy-number variants, including lncRNA genes, cause a lethal lung developmental disorder. Genome Res 2012; 23:23-33. [PMID: 23034409 PMCID: PMC3530681 DOI: 10.1101/gr.141887.112] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An unanticipated and tremendous amount of the noncoding sequence of the human genome is transcribed. Long noncoding RNAs (lncRNAs) constitute a significant fraction of non-protein-coding transcripts; however, their functions remain enigmatic. We demonstrate that deletions of a small noncoding differentially methylated region at 16q24.1, including lncRNA genes, cause a lethal lung developmental disorder, alveolar capillary dysplasia with misalignment of pulmonary veins (ACD/MPV), with parent-of-origin effects. We identify overlapping deletions 250 kb upstream of FOXF1 in nine patients with ACD/MPV that arose de novo specifically on the maternally inherited chromosome and delete lung-specific lncRNA genes. These deletions define a distant cis-regulatory region that harbors, besides lncRNA genes, also a differentially methylated CpG island, binds GLI2 depending on the methylation status of this CpG island, and physically interacts with and up-regulates the FOXF1 promoter. We suggest that lung-transcribed 16q24.1 lncRNAs may contribute to long-range regulation of FOXF1 by GLI2 and other transcription factors. Perturbation of lncRNA-mediated chromatin interactions may, in general, be responsible for position effect phenomena and potentially cause many disorders of human development.
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Affiliation(s)
- Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA
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