Mechanisms of hematopoietic clonal dominance in VEXAS syndrome
Nature Medicine,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Clonal
dominance
characterizes
hematopoiesis
during
aging
and
increases
susceptibility
to
blood
cancers
common
nonmalignant
disorders.
VEXAS
syndrome
is
a
recently
discovered,
adult-onset,
autoinflammatory
disease
burdened
by
high
mortality
rate
caused
dominant
hematopoietic
clones
bearing
somatic
mutations
in
the
UBA1
gene.
However,
pathogenic
mechanisms
driving
clonal
are
unknown.
Moreover,
lack
of
models
hampers
development
disease-modifying
therapies.
In
present
study,
we
performed
immunophenotype
characterization
single-cell
transcriptomics
cohort
nine
male
patients
with
syndrome,
revealing
pervasive
inflammation
across
all
lineages.
Hematopoietic
stem
progenitor
cells
(HSPCs)
skewed
toward
myelopoiesis
acquire
senescence-like
programs.
Humanized
generated
inserting
causative
mutation
healthy
HSPCs
through
base
editing,
recapitulated
proteostatic
defects,
cytological
alterations
senescence
signatures
patients'
cells,
as
well
hematological
inflammatory
hallmarks.
Competitive
transplantations
human
UBA1-mutant
wild-type
showed
that,
although
mutant
more
resilient
milieu,
probably
acquisition
state,
ones
progressively
exhausted
overwhelmed
clones,
overall
impairing
functional
leading
bone
marrow
failure.
Our
study
unveils
mechanism
provides
for
preclinical
studies
preliminary
insights
that
could
inform
therapeutic
strategies.
Language: Английский
Update on autoinflammatory diseases
Current Opinion in Rheumatology,
Journal Year:
2023,
Volume and Issue:
35(5), P. 285 - 292
Published: July 6, 2023
Purpose
of
review
Although
the
concept
systemic
autoinflammatory
diseases
(SAIDs)
is
still
very
young,
our
knowledge
about
them
exponentially
growing.
In
current
review,
we
aim
to
discuss
novel
SAIDs
and
pathways
discovered
in
last
couple
years.
Recent
findings
Advances
immunology
genetics
have
led
discovery
new
involved
autoinflammation,
as
well
several
SAIDs,
including
retinal
dystrophy,
optic
nerve
edema,
splenomegaly,
anhidrosis,
migraine
headache
(ROSAH
syndrome),
vacuoles,
E1
enzyme,
X-linked
somatic
(VEXAS)
syndrome,
TBK1
deficiency,
NEMO
deleted
exon
5
syndrome
(NDAS),
disabling
pansclerotic
morphea.
Progress
immunobiology
has
also
brought
forth
treatments
for
SAIDs.
Personalized
medicine
made
significant
progress
areas
such
cytokine-targeted
therapies
gene
therapies.
However,
much
work
remains,
especially
measuring
improving
quality
life
patients
with
Summary
novelties
world
mechanistic
pathogenesis,
treatment.
We
hope
this
helps
rheumatologists
gain
an
updated
understanding
Language: Английский
Painful Diplopia as an Initial Presentation of VEXAS Syndrome
Ahmed Zewar,
No information about this author
Caroline A Zollinger-Read,
No information about this author
Lisa Dunkley
No information about this author
et al.
Neuro-Ophthalmology,
Journal Year:
2024,
Volume and Issue:
48(5), P. 360 - 363
Published: March 12, 2024
This
is
a
case
report
describing
an
unusual
presentation
of
acute
painful
diplopia
that
led
to
the
diagnosis
VEXAS
syndrome.
(Vacuoles,
E1
enzyme,
X-linked,
Autoinflammatory,
Somatic)
syndrome
adult-onset
monogenic
auto-inflammatory
disease
due
somatic
UBA1
gene
mutation
in
haematopoietic
progenitor
cells.
Our
patient
was
67-year-old
diabetic
male
who
presented
with
eye
movements
associated
diplopia,
left
periorbital
pain
and
swelling.
Imaging
revealed
inflammatory
process
involving
multiple
intra-
extra-orbital
structures.
The
improved
initially
short
course
intravenous
steroids.
However,
two
months
later
he
re-presented
right
facial
Bone
marrow
biopsy
demonstrated
supporting
highlights
unique
ocular
VEXAS.
Language: Английский
VEXAS syndrome — long recognised, recently named
Rheumatology Forum,
Journal Year:
2023,
Volume and Issue:
9(4), P. 186 - 191
Published: Dec. 30, 2023
VEXAS
syndrome
was
first
described
in
2020.
It
is
a
of
autoimmune
and
haematological
manifestations
caused
by
somatic
mutation
the
UBA1
gene
bone
marrow
progenitor
cells.
This
results
abnormal
protein
ubiquitination
systemic
inflammatory
process.
The
main
symptoms
include
recurrent
fever,
polychondritis,
neutrophilic
dermatosis,
vasculitis,
ophthalmic
with
myelodysplastic
syndrome.
treatment
has
proven
to
be
effective
high-dose
corticosteroids,
monoclonal
antibodies
directed
against
interleukin
1,
6,
tyrosine
kinase
inhibitors
—
JAK
allogeneic
haematopoietic
stem-cell
transplantation.
prognosis
unfavourable,
many
patients
do
not
improve
after
die.
Language: Английский
Fever, Rash, and Shortness of Breath in a 69-Year-Old
JAMA,
Journal Year:
2024,
Volume and Issue:
331(8), P. 698 - 698
Published: Feb. 8, 2024
A
69-year-old
had
fever,
fatigue,
rash,
right
periorbital
swelling,
and
shortness
of
breath.
Chest
computed
tomography
revealed
numerous
small,
bilateral
pulmonary
nodules;
laboratory
testing
mean
corpuscular
volume,
96.1
fL;
hemoglobin
level,
12.4
mg/dL;
leukopenia.
What
is
the
diagnosis
what
would
you
do
next?
Language: Английский
Macrocytic Anemia: A Presenting Feature of VEXAS Syndrome
Annals of Internal Medicine Clinical Cases,
Journal Year:
2024,
Volume and Issue:
3(6)
Published: June 1, 2024
Language: Английский
VEXAS syndrome: on the threshold of changing perceptions of known diseases
Modern Rheumatology Journal,
Journal Year:
2023,
Volume and Issue:
17(6), P. 92 - 101
Published: Dec. 20, 2023
This
article
presents
the
first
case
of
VEXAS
syndrome
identified
in
Russian
Federation
as
well
characteristics
currently
known
clinical
manifestations
and
treatment
approaches.
The
observation
described
is
an
impressive
example
how
identification
a
new
pathogenic
mutation
can
change
understanding
classification,
diagnosis
previously
immunoinflammatory
diseases.
Thus,
refractory
forms
relapsing
polychondritis,
neutrophilic
dermatosis,
atypical
vasculitis,
inflammatory
joint
diseases
or
undifferentiated
systemic
syndrome,
especially
when
associated
with
macrocytic
anemia
myelodysplastic
should
be
suspected
genetic
testing
performed
to
exclude
autoinflammatory
nature
existing
condition.
Language: Английский