Author
James A. Knowles
University of Southern CaliforniaORCID 0000-0002-3307-5741Unclaimed ORCID profile · follow to get notified of new preprints
Biology Disciplines
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2016-2026 · peak 5/yrCo-Author Collaboration Network
10 top collaborators · 39 mutual co-author links27 papers
Recent·Most cited
- Genetic & Genomic MedicinemedRxivPreprintDOI 10.64898/2026.09.30.26364416
- GeneticsbioRxivPreprint✦ In-depth digest
Analysis of Rare Coding Variation Identifies New Genetic Contributors to Schizophrenia
Julia Sealock, Connor Dowd, Calwing Liao…·Akena Dickens
Ultra-rare damaging coding variants in 87,959 schizophrenia cases and 150,587 controls implicate 40 genes (16 exome-wide, 24 at 5% FDR), half overlapping autism, developmental delay or bipolar genes.
1 citation - Genetic & Genomic MedicineGenomic psychiatry :Peer-reviewed
Multiplex Portuguese Families as a Lens into rare mutations and the Shared Genetic Architecture of Schizophrenia, Mood Disorders, and Autism Spectrum Disorders
Carlos N. Pato, Michele T. Pato, Jennifer Mulle…·Ayman H. Fanous
This study analyzes 173 multiplex Portuguese families to identify rare genetic variants associated with schizophrenia, mood disorders, and autism, finding a CHD2 mutation linked to diverse mental illness phenotypes.
- Genetic & Genomic MedicinemedRxivPreprint
Genomic dimensions deconstruct the clinical heterogeneity of bipolar disorder
Tracey van der Veen, Markos Tesfaye, Jessica Mei Kay Yang…·Melvin G. McInnis
This study identifies genetic risk loci and factors underlying clinical subtypes of bipolar disorder using GWAS and meta-analysis.
- Genetic & Genomic MedicinemedRxivPreprint
The Landscape of Shared and Divergent Genetic Influences across 14 Psychiatric Disorders
Andrew David Grotzinger, Josefin Werme, Wouter J. Peyrot…·Jordan W. Smoller
The paper identifies five genomic factors explaining most genetic variance across 14 psychiatric disorders and finds shared and disorder-specific genetic signals with distinct biological functions.
15 citations - Genetic & Genomic MedicineHuman Genetics and Genomics AdvancesPeer-reviewed
Evaluation of imputation performance of multiple reference panels in a Pakistani population
Jiayi Xu, Dongjing Liu, Arsalan Hassan…·Laura M. Huckins
This study evaluates imputation performance of reference panels in a Pakistani population, finding that ex1KG outperforms TOPMed despite its smaller size.
5 citations - GenomicsbioRxivPreprint
Cell type catalog of middle turbinate epithelium
Fasil Mathews, Victoria Sook Keng Tung, Robert Foronjy…·Oleg Vadimovich Evgrafov
The paper identifies 14 cell types in human middle turbinate mucosa using scRNA-seq, including neural progenitors, and compares their gene expression profiles to other respiratory mucosa.
- Genetic & Genomic MedicineNaturePeer-reviewed✦ In-depth digest
Exome sequencing identifies rare coding variants in 10 genes which confer substantial risk for schizophrenia
Tarjinder Singh, Timothy Poterba, David Curtis…·David St Clair
Exomes of 24,248 schizophrenia cases and 97,322 controls implicate ultra-rare damaging variants in 10 genes, including GRIN2A and GRIA3, with odds ratios of 3 to 50.
979 citationstop 1% - Genetic & Genomic MedicinemedRxivPreprint
Autism spectrum disorder trios from consanguineous populations are enriched for rare biallelic variants, identifying 32 new candidate genes
3 citations - GenomicsTranslational PsychiatryPeer-reviewed
Genome-wide Association Study of Pediatric Obsessive-Compulsive Traits: Shared Genetic Risk between Traits and Disorder
Christie L. Burton, Mathieu Lemire, Bowei Xiao…·Andrew D. Paterson
This study identifies a genome-wide significant variant for OC traits and shows shared genetic risk between OC traits and OCD.
50 citations - Genetic & Genomic MedicineTranslational PsychiatryPeer-reviewed
Synaptic processes and immune-related pathways implicated in Tourette Syndrome
Fotis Tsetsos, Dongmei Yu, Jae Hoon Sul…·Harald Aschauer
This study identifies gene sets associated with Tourette Syndrome using genome-wide data, highlighting synaptic and immune-related pathways.
63 citationstop 3% - NeuroscienceBiological PsychiatryPeer-reviewed
Transcriptional Profiling of Primate Central Nucleus of the Amygdala Neurons to Understand the Molecular Underpinnings of Early Life Anxious Temperament
Rothem Kovner, Tade Souaiaia, Andrew S. Fox…·Ned H. Kalin
The paper identifies 528 AT-related transcripts in rhesus monkey CeL neurons, including PKCδ, and shows their projection to BSTLd, suggesting a primate circuit relevant to anxiety.
25 citations - GeneticsNature CommunicationsPeer-reviewed
A phenome-wide association and Mendelian Randomisation study of polygenic risk for depression in UK Biobank
Xueyi Shen, David M. Howard, Mark J. Adams…·Michael John Owen
This study identifies traits associated with polygenic risk for depression using UK Biobank data and finds causal links between depression risk and brain structure, as well as environmental interactions.
111 citationstop 1% - GeneticsBiological PsychiatryPeer-reviewed
Gene expression in patient-derived neural progenitors implicates WNT5A signaling in the etiology of schizophrenia
Oleg Vadimovich Evgrafov, Chris Armoskus, Bozena Wrobel…·James A. Knowles
The paper identifies differentially expressed genes in schizophrenia-associated neural progenitor cells, implicating WNT5A signaling in schizophrenia etiology.
35 citations - Developmental BiologyiSciencePeer-reviewed
A CTGF-YAP regulatory pathway is essential for angiogenesis and barriergenesis in the retina
Sohyun Moon, Sangmi Lee, JoyAnn Caesar…·Brahim Chaqour
This study identifies the CTGF-YAP pathway as critical for vascular development and barrier function in the retina.
61 citations - GeneticsBiological PsychiatryPeer-reviewed
Genetic variation in the Major Histocompatibility Complex and association with depression
Kylie P. Glanville, Jonathan R. I. Coleman, Ken Benjamin Hanscombe…·Thomas Folkmann Hansen
This study investigates whether genetic variation in the Major Histocompatibility Complex (MHC) is associated with depression risk, finding no significant associations at a conservative threshold.
39 citations - GeneticsNature CommunicationsPeer-reviewed
Variably methylated regions in the newborn epigenome: environmental, genetic and combined influences
Darina Czamara, Gökçen Eraslan, Christian Magnus Page…·Robert M. Maier
The paper examines how genetic and environmental factors influence DNA methylation at variably methylated regions in neonatal blood, finding that combined effects best explain methylation variability.
143 citationstop 2% - NeurosciencebioRxivPreprint
Deconvolution of Transcriptional Networks Identifies TCF4 as a Master Regulator in Schizophrenia
Abolfazl Doostparast Torshizi, Chris Armoskus, Hanwen Zhang…·Kai Wang
The paper deconvolves transcriptional networks in schizophrenia to identify TCF4 as a master regulator potentially dysregulated in the disease.
3 citations - GenomicsTranslational PsychiatryPeer-reviewed
Concordance Of Genetic Variation That Increases Risk For Tourette Syndrome And That Influences Its Underlying Neurocircuitry
Mary Sophia Mufford, Josh W. Cheung, Neda Jahanshad…·Dan Joseph Stein
This study identifies genetic overlaps between Tourette Syndrome risk and subcortical brain volumes using GWAS and pleiotropy analysis.
31 citationstop 3% - GeneticsBiological PsychiatryPeer-reviewed
Contribution of rare copy number variants to bipolar disorder risk is limited to schizoaffective cases
Alexander W. Charney, Eli A. Stahl, Elaine Green…·Pamela B. Sklar
The study finds that rare copy number variants (CNVs) contribute to bipolar disorder risk primarily in schizoaffective disorder bipolar type cases, with differences in CNV burden and schizophrenia polygenic risk scores between subtypes.
69 citationstop 4% - GeneticsCommunications BiologyPeer-reviewed
Applying polygenic risk scoring for psychiatric disorders to a large family with Bipolar Disorder and Major Depressive Disorder
Simone de Jong, Mateus Jose Abdalla Diniz, Andiara Saloma…·Jodie N. Painter
The paper applies polygenic risk scoring to a large family with bipolar and depressive disorders to study genetic risk patterns and anticipation.
23 citations - GeneticsNature CommunicationsPeer-reviewed
Extremely rare variants reveal patterns of germline mutation rate heterogeneity in humans
Jedidiah Carlson, Adam E. Locke, Matthew Flickinger…·Stanley J. Watson
The paper analyzes rare variants to uncover mutation rate heterogeneity in the human genome, identifying genomic features that influence mutation rates.
132 citationstop 1% - GeneticsMolecular PsychiatryPeer-reviewed
Examination of the Shared Genetic Basis of Anorexia Nervosa and Obsessive-Compulsive Disorder
Zeynep Yılmaz, Matthew Halvorsen, Julien Bryois…·James J. Crowley
This study investigates the shared genetic basis of anorexia nervosa and obsessive-compulsive disorder using a cross-disorder GWAS, finding a significant genetic correlation and associations with psychiatric and metabolic traits.
130 citationstop 1% - GeneticsNature GeneticsPeer-reviewed✦ In-depth digest
Genome-wide association analyses identify 44 risk variants and refine the genetic architecture of major depression
eQTLGen, Naomi R. Wray, 23andMe…·Niamh Mullins
Genome-wide association meta-analysis of 130,664 major depression cases and 330,470 controls identifies 44 independent risk loci enriched in cortical neurons, conserved mammalian regions, splicing networks, and antidepressant targets.
2,997 citationstop 1% - Evolutionary BiologybioRxivPreprint
Polygenic selection underlies evolution of human brain structure and behavioral traits
Evan R. Beiter, Ekaterina A. Khramtsova, Celia Van Der Merwe…·Lea K. Davis
The paper investigates selection mechanisms underlying human brain structure and behavioral traits, finding evidence for ancient and recent polygenic adaptation but not classical selective sweeps.
DOI 10.1101/164707 - GenomicsbioRxivPreprint
Evolutionary and functional data power search for obsessive-compulsive disorder genes
Hyun Ji Noh, Ruqi Tang, Jason A. Flannick…·Kerstin Lindblad‐Toh
The paper identifies OCD-associated genes by combining evolutionary and functional data with targeted sequencing in humans and animal models.
- GenomicsbioRxivPreprint
Assessing the measurement transfer function of single-cell RNA sequencing
Hannah R. Dueck, Rizi Ai, Adrian Camarena…·Junhyoung Kim
This study evaluates the performance of three scRNA-seq methods through controlled experiments, finding they reliably detect genes above 5-10 molecules with linear measurement transfer functions.
DOI 10.1101/045450