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Casanova Lab

@casanovalab.bsky.social
1K followers 243 following 755 posts

We're a research lab at UT Southwestern Medical Center (TX) and Necker Hospital (Paris) studying human genetic and immunological determinants of infectious diseases. www.hgid.org

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Casanova Lab @casanovalab.bsky.social · 6h
NGS diagnosis of IEI in Oceania: Management change following NGS diagnosis of inborn errors of immunity: The Australasian experience rupress.org/jhi/article/...
rupress.org
Management change following NGS diagnosis of inborn errors of immunity: The Australasian experience
Swamy et al. describe an Australian/New Zealand cohort where identification of monogenic inborn errors of immunity through next-generation sequencing resul
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Casanova Lab @casanovalab.bsky.social · 01/10/2026
Management change following NGS diagnosis of inborn errors of immunity: The Australasian experience rupress.org/jhi/article/...
rupress.org
Management change following NGS diagnosis of inborn errors of immunity: The Australasian experience
Swamy et al. describe an Australian/New Zealand cohort where identification of monogenic inborn errors of immunity through next-generation sequencing resul
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Casanova Lab @casanovalab.bsky.social · 01/10/2026
Life-threatening hepatic complications in children with ADA-SCID rupress.org/jhi/article/...
rupress.org
Life-threatening hepatic complications in children with ADA-SCID
We report two cases of ADA-SCID complicated by severe hepatic manifestations, including hepatoblastoma and infantile hepatic hemangiomatosis. These cases h
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Casanova Lab @casanovalab.bsky.social · 01/10/2026
Antibody deficiency in myotonic dystrophy type 1: A differential diagnosis below the radar rupress.org/jhi/article/...
rupress.org
Antibody deficiency in myotonic dystrophy type 1: A differential diagnosis below the radar
Galli, Recher et al. describe two patients with hypogammaglobulinemia associated with myotonic dystrophy type 1 (DM1), a rare and underdiagnosed monogenic
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Reposted by Casanova Lab
Journal of Experimental Medicine @jem.org · 28/09/2026
Jensen, Skouboe, Gervais, Mogensen et al. report the finding of #autoantibodies neutralizing type I IFNs in the blood and/or cerebrospinal fluid in a significantly elevated fraction of adults with HSV encephalitis (5%) compared with the general population rupress.org/jem/article/...
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 25/09/2026
Human inborn errors of the phagocyte respiratory burst: chronic granulomatous disease and beyond. New review from Anna-Lena Neehus @alneehus.bsky.social, Vijay G. Sankaran @bloodgenes.bsky.social, Jean-Laurent Casanova @casanovalab.bsky.social, and Jacinta Bustamante: rupress.org/jhi/article/...
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Casanova Lab @casanovalab.bsky.social · 24/09/2026
Mosaic TLR8 gain-of-function in an elderly female treated with JAK inhibitor and adjunctive therapy rupress.org/jhi/article/...
rupress.org
Mosaic TLR8 gain-of-function in an elderly female treated with JAK inhibitor and adjunctive therapy
Patel et al. describe an elderly woman with severe chronic neutropenia caused by mosaic TLR8 gain-of-function. The report broadens a primarily pediatric, m
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Casanova Lab @casanovalab.bsky.social · 23/09/2026
A fatal case of Aspergillus endocarditis in a pediatric patient with STING-associated vasculopathy rupress.org/jhi/article/...
rupress.org
A fatal case of Aspergillus endocarditis in a pediatric patient with STING-associated vasculopathy
Dethier et al. describe a young girl with SAVI on prolonged JAK inhibitors who developed fatal Aspergillus endocarditis. This report illustrates the major
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Casanova Lab @casanovalab.bsky.social · 20/09/2026
The phagocyte respiratory burst beyond CGD: Human inborn errors of the phagocyte respiratory burst: Chronic granulomatous disease and beyond rupress.org/jhi/article/...
rupress.org
Human inborn errors of the phagocyte respiratory burst: Chronic granulomatous disease and beyond
This review covers the human genetic defects affecting the phagocytic respiratory burst, highlighting the dichotomy between defects of the core NADPH oxida
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Casanova Lab @casanovalab.bsky.social · 20/09/2026
Skin biopsy in adult-onset Still’s disease: A specific, rapid, and widely available diagnostic test rupress.org/jhi/article/...
rupress.org
Skin biopsy in adult-onset Still’s disease: A specific, rapid, and widely available diagnostic test
AOSD is challenging to diagnose. Chong et al. examine the clinical utility of skin biopsy, an inexpensive and widely available test, in 16 patients with AO
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 18/09/2026
Adult-onset Still’s disease is challenging to diagnose. Chong et al. examine the clinical utility of skin biopsy, an inexpensive & widely available test, in 16 patients and show that dyskeratotic keratinocytes in the superficial layers are useful for diagnosing #AOSD. rupress.org/jhi/article/...
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Reposted by Casanova Lab
Rockefeller University Press @rupress.org · 18/09/2026
In @jhumimmunity.org, Chong et al. examine the clinical utility of skin biopsy, an inexpensive & widely available test, in 16 patients and show that dyskeratotic keratinocytes in the superficial layers are useful for diagnosing #AOSD. rupress.org/jhi/article/...
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 18/09/2026
This review by @alneehus.bsky.social @bloodgenes.bsky.social @casanovalab.bsky.social & Bustamante covers the human genetic defects affecting the phagocytic respiratory burst, highlighting the dichotomy between defects of the core NADPH oxidase and of upstream regulators. rupress.org/jhi/article/...
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Casanova Lab @casanovalab.bsky.social · 16/09/2026
Endogenous and/or exogenous type I IFNs may contribute to the development of auto-Abs neutralizing type I IFNs: High prevalence of autoantibodies neutralizing type I IFNs in Japanese patients with hepatitis C rupress.org/jhi/article/...
rupress.org
High prevalence of autoantibodies neutralizing type I IFNs in Japanese patients with hepatitis C
The prevalence of autoantibodies neutralizing type I IFNs is significantly higher in Japanese patients with hepatitis C (2.7%) than in age-matched healthy
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Casanova Lab @casanovalab.bsky.social · 15/09/2026
A possible founder IRAK4 variant in Okinawa, Japan rupress.org/jhi/article/...
rupress.org
A possible founder IRAK4 variant in Okinawa, Japan
Tomomasa et al. describe that a clustering of patients with IRAK4 deficiency was identified in Okinawa Prefecture, Japan. All affected families carried the
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Casanova Lab @casanovalab.bsky.social · 11/09/2026
In Memoriam: Daniel L. Kastner, MD (1951–2026) rupress.org/jhi/article/...
rupress.org
In Memoriam: Daniel L. Kastner, MD (1951–2026)
Dr. Daniel L. Kastner, former Scientific Director of NHGRI, was a visionary physician-scientist whose discoveries transformed the understanding of innate i
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Reposted by Casanova Lab
Journal of Experimental Medicine @jem.org · 11/09/2026
Human inherited RORγT deficiency encompasses genetic heterogeneity, T cell deficiency, and clinical homogeneity. New study from Iris Fagniez, Jean-Laurent Casanova @casanovalab.bsky.social, Rui Yang @ryangrui.bsky.social @rockefeller.edu & colleagues: rupress.org/jem/article/... #Immunodeficiency
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Casanova Lab @casanovalab.bsky.social · 08/09/2026
1/ Spotlight on our former trainee @ryangrui.bsky.social, a physician-scientist and Assist. Prof. at @bcmhouston.bsky.social and Texas Children’s Hospital, focused on childhood immunodeficiencies and immune dysregulation and their genetic and immunologic basis.
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Casanova Lab @casanovalab.bsky.social · 08/09/2026
Superb mechanistic insights into HYOU1 deficiency: ER proteostasis failure in HYOU1 deficiency alters B cells, neutrophils, and interferon signalling rupress.org/jhi/article/...
rupress.org
ER proteostasis failure in HYOU1 deficiency alters B cells, neutrophils, and interferon signalling
Multi-omics characterization of 2 patients with biallelic HYOU1 variants reveals that HYOU1 deficiency impairs the unfolded protein response, disrupts earl
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Casanova Lab @casanovalab.bsky.social · 08/09/2026
More news on the genetics of Celiac disease (maybe some IEI discovered in a not too distant future ?) : Linkage between HLA-B8 and HLA-DQ2.5 contributes to ancestry-dependent risk for celiac disease rupress.org/jhi/article/...
rupress.org
Linkage between HLA-B8 and HLA-DQ2.5 contributes to ancestry-dependent risk for celiac disease
Using data from the All of Us Research Program, Xin Long et al. found that HLA-DQ2.5, the major genetic risk for celiac disease, is present across diverse
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Casanova Lab @casanovalab.bsky.social · 04/09/2026
1/ Delighted to share our paper in @jem.org today, led by Iris Fagniez and @ryangrui.bsky.social, two trainees just starting exciting new chapters in their careers: MD-PhD training at @harvardmed.bsky.social, @mit.edu, and Assistant Prof at @bcmhouston.bsky.social rupress.org/jem/article/...
rupress.org
Human-inherited RORγT deficiency encompasses genetic heterogeneity, T cell deficiency, and clinical homogeneity
Fagniez et al. identify new patients with inherited RORγT deficiency characterized by impaired TCRα rearrangement, depletion of MAIT and iNKT cells, reduce
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Casanova Lab @casanovalab.bsky.social · 04/09/2026
Base editing, future of IEI ? Base editing reversal of radiation sensitivity in NHEJ1 immunodeficiency rupress.org/jhi/article/...
rupress.org
Base editing reversal of radiation sensitivity in NHEJ1 immunodeficiency
The cutting and joining of DNA is a key step in immune cell development, but inherited errors in this process can cause individuals to be born without func
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Casanova Lab @casanovalab.bsky.social · 04/09/2026
A step forward to predict the risk of celiac disease in relatives of index cases: The clinical utility of exome sequencing for risk stratification in celiac disease rupress.org/jhi/article/...
rupress.org
The clinical utility of exome sequencing for risk stratification in celiac disease
First-degree relatives of patients with celiac disease have an estimated ∼10% lifetime risk of developing the condition, and periodic screening is therefor
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Casanova Lab @casanovalab.bsky.social · 04/09/2026
Prevalence of neutralizing autoantibodies against type I interferon in dengue patients rupress.org/jhi/article/...
rupress.org
Prevalence of neutralizing autoantibodies against type I interferon in dengue patients
The presence of type I IFN-neutralizing antibodies (NAbs) is a life-threatening risk factor for multiple infectious diseases. This study reports the preval
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Casanova Lab @casanovalab.bsky.social · 04/09/2026
Temporal windowing of recurrent sinusitis improves EHR-based immunodeficiency classification rupress.org/jhi/article/...
rupress.org
Temporal windowing of recurrent sinusitis improves EHR-based immunodeficiency classification
Chin et al. develop a temporal windowing methodology that groups recurrent sinusitis encounters into discrete episodes in electronic health records. Applie
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Casanova Lab @casanovalab.bsky.social · 28/08/2026
Fascinating case study ! Ureaplasma parvum septic arthritis in LRBA deficiency: An infectious mimic of autoimmune arthritis rupress.org/jhi/article/...
rupress.org
Ureaplasma parvum septic arthritis in LRBA deficiency: An infectious mimic of autoimmune arthritis
Timmermans et al. report culture-negative septic arthritis caused by Ureaplasma parvum in a patient with LRBA deficiency, mimicking autoimmune disease. Usi
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 26/08/2026
@pauljbaker.bsky.social, @sethlucianmasters.bsky.social et al. identify a 13-year-old male with complex symptoms including those consistent with familial chilblain lupus. This inborn error of immunity is due to a genomic translocation resulting in SAMHD1 deficiency rupress.org/jhi/article/...
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Reposted by Casanova Lab
Rockefeller University Press @rupress.org · 26/08/2026
In @jhumimmunity.org, @sethlucianmasters.bsky.social et al. identify a 13-year-old male with complex symptoms including those consistent with familial chilblain lupus. This inborn error of immunity is due to a genomic translocation resulting in SAMHD1 deficiency rupress.org/jhi/article/...
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 26/08/2026
Autosomal recessive OSMRβ deficiency: connecting OSM and/or IL-31 with #atopy. Anne Puel, @casanovalab.bsky.social, and Vivien Béziat discuss two studies by Andersen et al. (rupress.org/jhi/article/...), and @turveylab.bsky.social: (rupress.org/jhi/article/...): rupress.org/jhi/article/...
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Casanova Lab @casanovalab.bsky.social · 26/08/2026
The first IEI due to a homozygous balanced translocation ! Worth a read: Iterative genetic testing identifies SAMHD1 deficiency caused by a homozygous balanced translocation rupress.org/jhi/article/...
rupress.org
Iterative genetic testing identifies SAMHD1 deficiency caused by a homozygous balanced translocation
Baker et al. report an inborn error of immunity resulting from a genomic translocation. A 13-year-old male is identified with complex symptoms including th
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Casanova Lab @casanovalab.bsky.social · 26/08/2026
STAT1 gain-of-function variant in a previously healthy patient with disseminated Mycobacterium genavense infection rupress.org/jhi/article/...
rupress.org
STAT1 gain-of-function variant in a previously healthy patient with disseminated Mycobacterium genavense infection
STAT1 defects present with diverse clinical phenotypes. Thiagarajan et al. describe an unusual genotype/phenotype: disseminated mycobacterial infection wit
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 26/08/2026
#STAT1 gain-of-function in 12 Moroccan patients: Clinical and genetic insights. New study from Bouchra Baghad (Ibn Rochd University Hospital, Casablanca) and colleagues: rupress.org/jhi/article/... @casanovalab.bsky.social #InbornErrorsOfImmunity
rupress.org
STAT1 gain-of-function in 12 Moroccan patients: Clinical and genetic insights
STAT1 gain-of-function mutations cause chronic mucocutaneous candidiasis and broad immune dysregulation, yet African data are limited. In a Moroccan cohort
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Casanova Lab @casanovalab.bsky.social · 24/08/2026
1/ We are excited to report in @PNASNews that autoantibodies neutralizing type I interferons underlie 35% of cases of Chikungunya virus (CHIKV) encephalitis or myelitis from a multiple cohort study. www.pnas.org/doi/10.1073/...
pnas.org
Autoantibodies neutralizing type I interferons underlie a third of cases of Chikungunya virus encephalitis or myelitis | PNAS
Chikungunya virus (CHIKV) infection is typically not life threatening but may, in rare cases, affect the central nervous system (CNS). In three coh...
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Turvey Lab @turveylab.bsky.social · 21/08/2026
Thank you, Anne, Jean-Laurent, and Vivien, for this wonderful News & Views, and congratulations to Trine Mogensen and colleagues on their complementary study. It's exciting to see independent discoveries establish OSMRβ deficiency as a new inborn error of immunity. @casanovalab.bsky.social
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Casanova Lab @casanovalab.bsky.social · 20/08/2026
The first study of STAT1 GOF in Africa: STAT1 gain-of-function in 12 Moroccan patients: Clinical and genetic insights rupress.org/jhi/article/...
rupress.org
STAT1 gain-of-function in 12 Moroccan patients: Clinical and genetic insights
STAT1 gain-of-function mutations cause chronic mucocutaneous candidiasis and broad immune dysregulation, yet African data are limited. In a Moroccan cohort
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Casanova Lab @casanovalab.bsky.social · 20/08/2026
Newborn screening for T/B cell disorders is gaining traction worldwide: Nationwide TREC/KREC-based newborn screening and clinical outcomes in Japan rupress.org/jhi/article/...
rupress.org
Nationwide TREC/KREC-based newborn screening and clinical outcomes in Japan
Nishinosono et al. show that nationwide TREC/KREC newborn screening in Japan demonstrates that large-scale programs can achieve favorable outcomes while re
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Casanova Lab @casanovalab.bsky.social · 20/08/2026
It was a pleasure to help @anne_puel and @BeziatV write this News & Views about spectacular discoveries by @TurveyLab and Trine Mogensen ! Autosomal recessive OSMRβ deficiency: Connecting OSM and/or IL-31 with atopy rupress.org/jhi/article/...
rupress.org
Autosomal recessive OSMRβ deficiency: Connecting OSM and/or IL-31 with atopy
In this News & Views, we discuss two studies reporting autosomal recessive OSMRβ deficiency as a new inborn error of immunity marked by severe atopy, h
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 19/08/2026
Puel, @casanovalab.bsky.social & Béziat discuss two studies reporting autosomal recessive OSMRβ deficiency as a new inborn error of immunity marked by severe #atopy, hyper-IgE, & #eosinophilia, thereby refining the genetic dissection of #STAT3-dependent hyper-IgE syndrome rupress.org/jhi/article/...
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Rockefeller University Press @rupress.org · 19/08/2026
Puel, @casanovalab.bsky.social & Béziat discuss two studies reporting autosomal recessive OSMRβ deficiency as a new inborn error of immunity marked by severe #atopy, hyper-IgE, & #eosinophilia, thereby refining the genetic dissection of #STAT3-dependent hyper-IgE syndrome rupress.org/jhi/article/...
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Casanova Lab @casanovalab.bsky.social · 11/08/2026
IEI should be considered in adults with rheumatological conditions: Multidisciplinary genomic evaluation reveals adult inborn errors of immunity with rheumatic features rupress.org/jhi/article/...
rupress.org
Multidisciplinary genomic evaluation reveals adult inborn errors of immunity with rheumatic features
Baba et al. demonstrate the utility of multidisciplinary genetic evaluation for identifying inborn errors of immunity in adult rheumatology practice. They
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Casanova Lab @casanovalab.bsky.social · 11/08/2026
Somatic phenocopies of IEI, complete or partial, are on the rise: TCR γδ cell–specific STAT5 gain of function induces a druggable chronic human immune dysregulation rupress.org/jhi/article/...
rupress.org
TCR γδ cell–specific STAT5 gain of function induces a druggable chronic human immune dysregulation
A subset of patients evaluated for immune dysregulation presents with increased proportions of TCR γδ cells despite normal total lymphocyte counts. Corresp
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Casanova Lab @casanovalab.bsky.social · 05/08/2026
APS-1 in the Middle East ! Clinical, genetic, and immunologic features of APS-1 patients from the Middle East, and a review of the literature rupress.org/jhi/article/...
rupress.org
Clinical, genetic, and immunologic features of APS-1 patients from the Middle East, and a review of the literature
The authors identify three novel mutations in AIRE and detect T cell defects in patients with APS-1. Furthermore, they review the literature and identify a
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Casanova Lab @casanovalab.bsky.social · 05/08/2026
A superb review: Adenosine deaminase type 2 deficiency: From rare to common rupress.org/jhi/article/...
rupress.org
Adenosine deaminase type 2 deficiency: From rare to common
Wouters et al. review the clinical and genetic landscape of DADA2, a multisystem inborn error of immunity. It examines expanding phenotypes, emerging patho
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 03/08/2026
Lamah, Massaad et al. identify three novel mutations in AIRE and detect T cell defects in patients with APS-1. Furthermore, they review the literature and identify additional clinical features, and define mutational hotspots suitable for targeted sequencing rupress.org/jhi/article/... #Autoimmunity
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Reposted by Casanova Lab
Rockefeller University Press @rupress.org · 03/08/2026
In @jhumimmunity.org, Lamah et al. identify three novel mutations in AIRE and detect T cell defects in patients with APS-1. Furthermore, they review the literature and identify additional clinical features, and define mutational hotspots suitable for targeted sequencing rupress.org/jhi/article/...
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Reposted by Casanova Lab
Rockefeller University Press @rupress.org · 03/08/2026
In a new @jhumimmunity.org review on DADA2, Wouters et al. cover the full spectrum of disease (#vasculitis, bone marrow failure, #immunodeficiency), TNF inhibitors, stem cell transplant, & #genetherapy on the horizon, the concept that a single variant can cause disease. rupress.org/jhi/article/...
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 03/08/2026
How I Treat: Diagnostic clues and treatment for activated phosphoinositide 3-kinase delta syndrome. Hirokazu Kanegane @sciencetokyo_en, Dan Tomomasa, and Satoshi Okada propose “10 Warning Signs of APDS” for the early clinical detection of APDS: rupress.org/jhi/article/... #HowITreat #IEIs
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Reposted by Casanova Lab
Journal of Human Immunity @jhumimmunity.org · 03/08/2026
The importance of tailored conditioning for hematopoietic stem cell transplantation in children with Mendelian susceptibility to mycobacterial disease: A tale of two pathways for IFN-γ and IL-12 defects. From Kavitha Ganesan et al. (Apollo Hospitals India): #InbornErrorsofImmunity #Mycobacteria
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Casanova Lab @casanovalab.bsky.social · 03/08/2026
1/ We are thrilled to share our new study on the risk of hypoxemic COVID-19 pneumonia in Myasthenia Gravis (MG) patients with autoantibodies (auto-Abs) neutralizing type I IFNs in @pnas.org. www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Journal of Human Immunity @jhumimmunity.org · 23/06/2026
Australasian Society of Clinical Immunology and Allergy consensus statement on IEI molecular diagnosis. New Perspective from Tatiane Yanes, Peter McNaughton (Queensland Children’s Hospital) and colleagues: rupress.org/jhi/article/... #IEIs #InbornErrorsOfImmunity
rupress.org
Australasian Society of Clinical Immunology and Allergy consensus statement on IEI molecular diagnosis
Yanes et al. presents evidence-based guidelines from the Australasian Society of Clinical Immunology and Allergy to support clinicians in selecting patient
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