Search

Your search keyword '"Crystle Lee"' showing total 8 results
Start Over Author "Crystle Lee"
8 results on '"Crystle Lee"'

1. Prospective cohort study of genomic newborn screening: BabyScreen+ pilot study protocol

Author

John Christodoulou, Christopher Gyngell, Stephanie Best, Clara Gaff, Zornitza Stark, Ilias Goranitis, Marc Clausen, Yvonne Bombard, Lilian Downie, Sebastian Lunke, David J Amor, Alison Yeung, Simon Sadedin, Fiona Lynch, Sophie E Bouffler, Danya F Vears, Jade Caruana, Alison Archibald, Paul De Fazio, Ronda F Greaves, Sebastian Hollizeck, Anaita Kanga-Parabia, Nitzan Lang, Riccarda Peters, Erin Tutty, Stefanie Eggers, Crystle Lee, and Meaghan Wall

Subjects
Medicine
Abstract

Introduction Newborn bloodspot screening (NBS) is a highly successful public health programme that uses biochemical and other assays to screen for severe but treatable childhood-onset conditions. Introducing genomic sequencing into NBS programmes increases the range of detectable conditions but raises practical and ethical issues. Evidence from prospectively ascertained cohorts is required to guide policy and future implementation. This study aims to develop, implement and evaluate a genomic NBS (gNBS) pilot programme.Methods and analysis The BabyScreen+ study will pilot gNBS in three phases. In the preimplementation phase, study materials, including education resources, decision support and data collection tools, will be designed. Focus groups and key informant interviews will also be undertaken to inform delivery of the study and future gNBS programmes. During the implementation phase, we will prospectively recruit birth parents in Victoria, Australia, to screen 1000 newborns for over 600 severe, treatable, childhood-onset conditions. Clinically accredited whole genome sequencing will be performed following standard NBS using the same sample. High chance results will be returned by genetic healthcare professionals, with follow-on genetic and other confirmatory testing and referral to specialist services as required. The postimplementation phase will evaluate the feasibility of gNBS as the primary aim, and assess ethical, implementation, psychosocial and health economic factors to inform future service delivery.Ethics and dissemination This project received ethics approval from the Royal Children’s Hospital Melbourne Research Ethics Committee: HREC/91500/RCHM-2023, HREC/90929/RCHM-2022 and HREC/91392/RCHM-2022. Findings will be disseminated to policy-makers, and through peer-reviewed journals and conferences.

Published
2024
Full Text
View/download PDF

2. Distinct diagnostic trajectories in NBAS‐associated acute liver failure highlights the need for timely functional studies

Author

Lauren S. Akesson, Rocio Rius, Natasha J. Brown, Jeremy Rosenbaum, Sarah Donoghue, Michael Stormon, Charmaine Chai, Esmeralda Bordador, Yiran Guo, Hakon Hakonarson, Alison G. Compton, David R. Thorburn, Sumudu Amarasekera, Justine Marum, Alisha Monaco, Crystle Lee, Belinda Chong, Sebastian Lunke, Zornitza Stark, and John Christodoulou

Subjects
functional genomics, genome sequencing, pediatrics, rapid genomic sequencing, recurrent acute liver failure, variant classification, Diseases of the endocrine glands. Clinical endocrinology, RC648-665, Genetics, QH426-470
Abstract

Abstract Variants of uncertain significance (VUS) are commonly found following genomic sequencing, particularly in ethnically diverse populations that are underrepresented in large population databases. Functional characterization of VUS may assist in variant reclassification, however these studies are not readily available and often rely on research funding and good will. We present four individuals from three families at different stages of their diagnostic trajectory with recurrent acute liver failure (RALF) and biallelic NBAS variants, confirmed by either trio analysis or cDNA studies. Functional characterization was undertaken, measuring NBAS and p31 levels by Western blotting, demonstrating reduced NBAS levels in two of three families, and reduced p31 levels in all three families. These results provided functional characterization of the molecular impact of a missense VUS, allowing reclassification of the variant and molecular confirmation of NBAS‐associated RALF. Importantly, p31 was decreased in all individuals, including an individual with two missense variants where NBAS protein levels were preserved. These results highlight the importance of access to timely functional studies after identification of putative variants, and the importance of considering a range of assays to validate variants whose pathogenicity is uncertain. We suggest that funding models for genomic sequencing should consider incorporating capabilities for adjunct RNA, protein, biochemical, and other specialized tests to increase the diagnostic yield which will lead to improved medical care, increased equity, and access to molecular diagnoses for all patients.

Published
2022
Full Text
View/download PDF

3. Scaling national and international improvement in virtual gene panel curation via a collaborative approach to discordance resolution

Author

Elena Savva, Ivan Macciocca, Tiong Yang Tan, Victor S Lin, Ivone U.S. Leong, Mark J. Caulfield, Richard H. Scott, Ana Lisa Taylor Tavares, Crystle Lee, Kevin Savage, Kathryn N. North, Olivia Niblock, Christopher Boustred, Sarah Leigh, Arina Puzriakova, Ellen M. McDonagh, Alison Yeung, William Bellamy, Catherine E. Snow, Ellen R.A. Thomas, Antonio Rueda-Martin, Paul De Fazio, Bryony A. Thompson, Louise C. Daugherty, Helen K. Brittain, Eleanor Williams, Chirag Patel, Oliver Hofmann, Ain Roesley, Zornitza Stark, Jane Deller, Zandra C. Deans, Susan M. White, Rebecca E. Foulger, Lilian Downie, Sue Hill, Augusto Rendon, Sebastian Lunke, Meriel McEntagart, Oleg Gerasimenko, Lavinia Gordon, and Roman Valls

Subjects
Consensus, Computer science, Process (engineering), MEDLINE, Gene Expression, Harmonization, Terminology, Terminology as Topic, Gene panel, Genetics, Humans, Data Curation, Genetics (clinical), Australia, Genetic Diseases, Inborn, Molecular Sequence Annotation, Genomics, Resolution (logic), Mobile Applications, Data science, United Kingdom, Identification (information), Gene Ontology, Scale (social sciences), Perspective, Delivery of Health Care, Biomarkers
Abstract

Clinical validity assessments of gene-disease associations underpin analysis and reporting in diagnostic genomics, and yet wide variability exists in practice, particularly in use of these assessments for virtual gene panel design and maintenance. Harmonization efforts are hampered by the lack of agreed terminology, agreed gene curation standards, and platforms that can be used to identify and resolve discrepancies at scale. We undertook a systematic comparison of the content of 80 virtual gene panels used in two healthcare systems by multiple diagnostic providers in the United Kingdom and Australia. The process was enabled by a shared curation platform, PanelApp, and resulted in the identification and review of 2,144 discordant gene ratings, demonstrating the utility of sharing structured gene-disease validity assessments and collaborative discordance resolution in establishing national and international consensus.

Published
2021
Full Text
View/download PDF

4. Rapid exome sequencing and adjunct RNA studies confirm the pathogenicity of a novel homozygous ASNS splicing variant in a critically ill neonate

Author

Fathimath Faiz, Kenneth Tan, Ilias Goranitis, Amanda Springer, Crystle Lee, Emma I. Krzesinski, Andrew Fennell, David S. Francis, Zornitza Stark, Sandra T. Cooper, Matthew F. Hunter, Katherine Rose, Sebastian Lunke, Mark R. Davis, Lauren S. Akesson, John Christodoulou, and Adam Bournazos

Subjects
Male, Proband, Critical Illness, RNA Splicing, Biology, 03 medical and health sciences, Exon, Intensive care, Exome Sequencing, Genetics, Humans, Amino Acid Sequence, Genetics (clinical), Exome sequencing, 030304 developmental biology, 0303 health sciences, business.industry, 030305 genetics & heredity, Infant, Newborn, RNA, Aspartate-Ammonia Ligase, Exons, Pedigree, RNA splicing, Female, Human genome, Carbon-Nitrogen Ligases with Glutamine as Amide-N-Donor, RNA Splice Sites, Personalized medicine, business
Abstract

Rapid genomic diagnosis programs are transforming rare disease diagnosis in acute pediatrics. A ventilated newborn with cerebellar hypoplasia underwent rapid exome sequencing (75 h), identifying a novel homozygous ASNS splice-site variant (NM_133436.3:c.1476+1G>A) of uncertain significance. Rapid ASNS splicing studies using blood-derived messenger RNA from the family trio confirmed a consistent pattern of abnormal splicing induced by the variant (cryptic 5' splice-site or exon 12 skipping) with absence of normal ASNS splicing in the proband. Splicing studies reported within 10 days led to reclassification of c.1476+1G>A as pathogenic at age 27 days. Intensive care was redirected toward palliation. Cost analyses for the neonate and his undiagnosed, similarly affected deceased sibling, demonstrate that early diagnosis reduced hospitalization costs by AU$100,828. We highlight the diagnostic benefits of adjunct RNA testing to confirm the pathogenicity of splicing variants identified via rapid genomic testing pipelines for precision and preventative medicine.

Published
2020
Full Text
View/download PDF

5. Distinct diagnostic trajectories in NBAS-associated acute liver failure highlights the need for timely functional studies

Author

Lauren S. Akesson, Rocio Rius, Natasha J. Brown, Jeremy Rosenbaum, Sarah Donoghue, Michael Stormon, Charmaine Chai, Esmeralda Bordador, Yiran Guo, Hakon Hakonarson, Alison G. Compton, David R. Thorburn, Sumudu Amarasekera, Justine Marum, Alisha Monaco, Crystle Lee, Belinda Chong, Sebastian Lunke, Zornitza Stark, and John Christodoulou

Subjects
Endocrinology, Diabetes and Metabolism, Internal Medicine, Biochemistry, Genetics and Molecular Biology (miscellaneous)
Abstract

Variants of uncertain significance (VUS) are commonly found following genomic sequencing, particularly in ethnically diverse populations that are underrepresented in large population databases. Functional characterization of VUS may assist in variant reclassification, however these studies are not readily available and often rely on research funding and good will. We present four individuals from three families at different stages of their diagnostic trajectory with recurrent acute liver failure (RALF) and biallelic

Published
2021

6. Variants in the degron of AFF3 are associated with intellectual disability, mesomelic dysplasia, horseshoe kidney, and epileptic encephalopathy

Author

Rhonda E. Schnur, Fabio Sirchia, Olga Levchenko, Caroline Nava, Jane Juusola, Sarah Verheyen, Marketa Vlckova, Lindsay Rhodes, Gregory M. Cooper, Darina Prchalova, Thomas Courtin, Øystein L. Holla, David Kronn, Akemi J. Tanaka, E. Martina Bebin, Tara Funari, Miroslava Hancarova, Ennio Del Giudice, Nicolas Guex, Astrid Eisenkölbl, Dawn L. Earl, Toshiki Takenouchi, Ursula Gruber-Sedlmayr, Sedlácek Z, Sofia Douzgou, Heidelis A. Seebacher, Gerarda Cappuccio, Jasmin Blatterer, Anna Mikhaleva, Dian Donnai, Wendy K. Chung, Else Merckoll, Natasha J Brown, Elizabeth A. Sellars, Stefan Mundlos, Susan M. Hiatt, Giuliana Giannuzzi, Sinje Geuer, Giuseppina Vitiello, Séverine Lorrain, Alexandre Reymond, David J. Amor, Nicolas Chatron, Julien Delafontaine, Martine Doco, Kristian Tveten, Cecilie F. Rustad, Sylvain Pradervand, Delphine Héron, Alfredo Brusco, Elena L. Dadali, Nicola Brunetti-Pierri, Boris Keren, Yuri A. Zarate, Crystle Lee, Joel Charrow, Binnaz Yalcin, Heidi Taska-Tench, Elin Tønne, Tomoko Uehara, Alexander Lavrov, Jennifer Norman, Norine Voisin, Anna C.E. Hurst, Victoria R. Sanders, Ganka Douglas, Diana Johnson, Kenjiro Kosaki, Université de Lausanne = University of Lausanne (UNIL), Cooper Medical School of Rowan University [Camden] (CMSRU), Manchester University NHS Foundation Trust (MFT), University of Manchester [Manchester], HudsonAlpha Institute for Biotechnology [Huntsville, AL], Oslo University Hospital [Oslo], Victorian Clinical Genetics Services [Melbourne, VIC, Australia] (VCGS), Murdoch Children's Research Institute (MCRI), University of Melbourne, Seattle Children’s Hospital, Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme [ CHU Pitié-Salpêtrière AP-HP] (GRC : DIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Research Centre for Medical Genetics [Moscow, Russia] (RCMG), Max Planck Institute for Molecular Genetics (MPIMG), Max-Planck-Gesellschaft, Medical University of Graz, Sheffield Children's NHS Foundation Trust, University of Arkansas at Little Rock, Charles University [Prague] (CU), University Hospital Motol [Prague], University of Alabama at Birmingham [ Birmingham] (UAB), Università degli studi di Torino = University of Turin (UNITO), Azienda Ospedalerio - Universitaria Città della Salute e della Scienza di Torino = University Hospital Città della Salute e della Scienza di Torino, University of Naples Federico II = Università degli studi di Napoli Federico II, Ann & Robert H. Lurie Children's Hospital of Chicago, Swiss Institute of Bioinformatics [Lausanne] (SIB), Hémostase et Remodelage Vasculaire Post-Ischémie (HERVI - EA 3801), Université de Reims Champagne-Ardenne (URCA), GeneDx [Gaithersburg, MD, USA], Johannes Kepler University Linz [Linz] (JKU), Telemark Hospital Trust [Skien, Norway], New York Medical College (NYMC), Integris Pediatric Neurology [Oklahoma City, OK, USA] (IPN), Institute for Maternal and Child Health - IRCCS 'Burlo Garofolo' [Trieste], Keio University School of Medicine [Tokyo, Japan], Columbia University [New York], Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Manchester Centre for Genomic Medicine [Manchester, UK] (MCGM), St Mary's Hospital Manchester-Manchester Academic Health Science Centre (MAHSC), University of Manchester [Manchester]-University of Manchester [Manchester]-Manchester University NHS Foundation Trust (MFT)-Faculty of Biology, Medicine and Health [Manchester, UK], Charité - UniversitätsMedizin = Charité - University Hospital [Berlin], Dupuis, Christine, Voisin, N., Schnur, R. E., Douzgou, S., Hiatt, S. M., Rustad, C. F., Brown, N. J., Earl, D. L., Keren, B., Levchenko, O., Geuer, S., Verheyen, S., Johnson, D., Zarate, Y. A., Hancarova, M., Amor, D. J., Bebin, E. M., Blatterer, J., Brusco, A., Cappuccio, G., Charrow, J., Chatron, N., Cooper, G. M., Courtin, T., Dadali, E., Delafontaine, J., Del Giudice, E., Doco, M., Douglas, G., Eisenkolbl, A., Funari, T., Giannuzzi, G., Gruber-Sedlmayr, U., Guex, N., Heron, D., Holla, O. L., Hurst, A. C. E., Juusola, J., Kronn, D., Lavrov, A., Lee, C., Lorrain, S., Merckoll, E., Mikhaleva, A., Norman, J., Pradervand, S., Prchalova, D., Rhodes, L., Sanders, V. R., Sedlacek, Z., Seebacher, H. A., Sellars, E. A., Sirchia, F., Takenouchi, T., Tanaka, A. J., Taska-Tench, H., Tonne, E., Tveten, K., Vitiello, G., Vlckova, M., Uehara, T., Nava, C., Yalcin, B., Kosaki, K., Donnai, D., Mundlos, S., Brunetti Pierri, N., Chung, W. K., and Reymond, A.

Subjects
Male, Models, Molecular, Hypertrichosis, [SDV]Life Sciences [q-bio], Mesomelic Dysplasia, Transcriptome, Mice, Gene Frequency, Missense mutation, Child, Zebrafish, Genetics (clinical), Genetics, Brain Diseases, 0303 health sciences, biology, Protein Stability, 030305 genetics & heredity, AFF3, AFF4, horseshoe kidney, intellectual disability, mesomelic dysplasia, Nuclear Proteins, Syndrome, Phenotype, Ubiquitin ligase, [SDV] Life Sciences [q-bio], Child, Preschool, Female, Transcriptional Elongation Factors, Adolescent, Mutation, Missense, Osteochondrodysplasias, Article, Evolution, Molecular, Young Adult, 03 medical and health sciences, medicine, Animals, Humans, Amino Acid Sequence, Fused Kidney, 030304 developmental biology, Epilepsy, Infant, Horseshoe kidney, biology.organism_classification, medicine.disease, biology.protein
Abstract

International audience; The ALF transcription factor paralogs, AFF1, AFF2, AFF3, and AFF4, are components of the transcriptional super elongation complex that regulates expression of genes involved in neurogenesis and development. We describe an autosomal dominant disorder associated with de novo missense variants in the degron of AFF3, a nine amino acid sequence important for its binding to ubiquitin ligase, or with de novo deletions of this region. The sixteen affected individuals we identified, along with two previously reported individuals, present with a recognizable pattern of anomalies, which we named KINSSHIP syndrome (KI for horseshoe kidney, NS for Nievergelt/Savarirayan type of mesomelic dysplasia, S for seizures, H for hypertrichosis, I for intellectual disability, and P for pulmonary involvement), partially overlapping the AFF4-associated CHOPS syndrome. Whereas homozygous Aff3 knockout mice display skeletal anomalies, kidney defects, brain malformations, and neurological anomalies, knockin animals modeling one of the microdeletions and the most common of the missense variants identified in affected individuals presented with lower mesomelic limb deformities like KINSSHIP-affected individuals and early lethality, respectively. Overexpression of AFF3 in zebrafish resulted in body axis anomalies, providing some support for the pathological effect of increased amount of AFF3. The only partial phenotypic overlap of AFF3-and AFF4-associated syndromes and the previously published transcriptome analyses of ALF transcription factors suggest that these factors are not redundant and each contributes uniquely to proper development.

Published
2021
Full Text
View/download PDF

7. Variants in the degron ofAFF3cause a multi-system disorder with mesomelic dysplasia, horseshoe kidney and developmental and epileptic encephalopathy

Author

David Kronn, Akemi J. Tanaka, Stefan Mundlos, Jennifer Norman, Crystle Lee, Delphine Héron, Elena L. Dadali, Anna Mikhaleva, Tomoko Uehara, Alexander Lavrov, Kenjiro Kosaki, Cecilie F. Rustad, Victoria R. Sanders, Heidi Taska-Tench, Ganka Douglas, Boris Keren, Nicolas Chatron, Ennio Del Giudice, E. Martina Bebin, Julien Delafontaine, Wendy K. Chung, Susan M. Hiatt, Olga Levchenko, Nicolas Guex, Jane Juusola, Tara Funari, Rhonda E. Schnur, Caroline Nava, Giuliana Giannuzzi, Binnaz Yalcin, Gregory M. Cooper, Dawn L. Earl, Sofia Douzgou, Kristian Tveten, Anna C.E. Hurst, Gerarda Cappuccio, Joel Charrow, Sinje Geuer, Alexandre Reymond, David J. Amor, Elin Tønne, Norine Voisin, Natasha J Brown, Alfredo Brusco, Dian Donnai, Giuseppina Vitiello, Sylvain Pradervand, Nicola Brunetti-Pierri, Else Merckoll, Fabio Sirchia, Toshiki Takenouchi, and Øystein L. Holla

Subjects
Genetics, Hypertrichosis, 0303 health sciences, Mesomelic Dysplasia, Horseshoe kidney, Biology, biology.organism_classification, medicine.disease, Phenotype, Transcriptome, 03 medical and health sciences, 0302 clinical medicine, medicine, Missense mutation, Degron, Zebrafish, 030217 neurology & neurosurgery, 030304 developmental biology
Abstract

The ALF transcription factor paralogs,AFF1, AFF2, AFF3andAFF4, are components of the transcriptional super elongation complex that regulates expression of genes involved in neurogenesis and development. We describe a new autosomal dominant disorder associated withde novomissense variants in the degron of AFF3, a nine amino acid sequence important for its degradation. Consistent with a causative role ofAFF3variants, the mutated AFF3 proteins show reduced clearance. Ten affected individuals were identified, and present with a recognizable pattern of anomalies, which we named KINSSHIP syndrome (KI for horseshoeKIdney, NS forNievergelt/Savarirayan type of mesomelic dysplasia, S forSeizures, H forHypertrichosis, I forIntellectual disability and P forPulmonary involvement), partially overlapping theAFF4associated CHOPS syndrome. An eleventh individual with a microdeletion encompassing only the transactivation domain and degron motif ofAFF3exhibited overlapping clinical features. A zebrafish overexpression model that shows body axis anomalies provides further support for the pathological effect of increased amount of AFF3 protein.Whereas homozygousAff3knockout mice display skeletal anomalies, kidney defects, brain malformation and neurological anomalies, knock-in animals modeling the microdeletion and the missense variants identified in affected individuals presented with lower mesomelic limb deformities and early lethality, respectively.Transcriptome analyses as well as the partial phenotypic overlap of syndromes associated withAFF3andAFF4variants suggest that ALF transcription factors are not redundant in contrast to what was previously suggested

Published
2019
Full Text
View/download PDF

8. Rapid exome sequencing and adjunct rna studies confirm pathogenicity of a novel homozygous asns splicing variant in a critically ill neonate

Author

Matthew F. Hunter, Zornitza Stark, Andrew Fennell, Sandra T. Cooper, Ilias Goranitis, Adam Bournazos, Sebastian Lunke, Crystle Lee, Emma I. Krzesinski, David S. Francis, Katherine Rose, John Christodoulou, Kenneth Tan, Amanda Springer, and Lauren S. Akesson

Subjects
Critically ill, RNA splicing, RNA, Computational biology, Biology, Pathogenicity, Adjunct, Exome sequencing, Pathology and Forensic Medicine
Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results