Cancer Drug Resistance,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
This
review
offers
an
expert
perspective
on
biomarkers,
CDK4/6
inhibitor
efficacy,
and
therapeutic
approaches
for
managing
hormone
receptor-positive
(HR+),
human
epidermal
growth
factor
receptor-negative
(HER2-)
advanced
breast
cancer
(ABC),
particularly
after
progression.
Key
trials
have
demonstrated
that
combining
inhibitors
with
endocrine
therapy
(ET)
significantly
improves
progression-free
survival
(PFS),
median
durations
ranging
from
14.8
to
26.7
months,
overall
(OS),
reaching
up
53.7
months.
Actionable
such
as
PIK3CA
ESR1
mutations,
emerged
pivotal
tools
guide
second-line
treatment
decisions,
enabling
the
use
of
targeted
therapies
like
alpelisib
elacestrant
emphasizing
important
role
biomarkers
in
guiding
selection
therapy.
overview
aims
provide
clinicians
a
practical
up-to-date
framework
inform
decisions
improve
patient
care
context
this
challenging
disease.
Additionally,
we
emerging
novel
strategies
address
difficult
clinical
landscape.
ESMO Open,
Journal Year:
2024,
Volume and Issue:
9(3), P. 102247 - 102247
Published: Feb. 23, 2024
Tumor
heterogeneity
represents
a
major
challenge
in
breast
cancer,
being
associated
with
disease
progression
and
treatment
resistance.
Precision
medicine
has
been
extensively
applied
to
dissect
tumor
and,
through
deeper
molecular
understanding
of
the
disease,
personalize
therapeutic
strategies.
In
last
years,
technological
advances
have
widely
improved
cancer
biology
several
trials
developed
translate
these
new
insights
into
clinical
practice,
ultimate
aim
improving
patients'
outcomes.
era
oncology,
genomics
analyses
other
methodologies
are
shaping
algorithm
care.
this
manuscript,
we
review
main
steps
precision
predict
drug
sensitivity
from
translational
point
view.
Genomic
developments
their
implications
discussed,
along
advancements
that
could
broaden
applications.
Current
achievements
put
perspective
provide
an
overview
state-of-art
oncology
as
well
identify
future
research
directions.
European Journal of Pharmacology,
Journal Year:
2024,
Volume and Issue:
969, P. 176424 - 176424
Published: Feb. 23, 2024
The
therapeutic
landscape
of
estrogen
receptor
(ER)-positive
breast
cancer
includes
endocrine
treatments
with
aromatase
inhibitors
(AIs),
selective
modulators
(SERMs),
and
degraders
(SERDs).
Fulvestrant
is
the
first
approved
SERD
proven
efficacy
good
tolerability
in
clinical
practice.
However,
secondary
drug
resistance,
low
affinity,
parental
administration
stimulated
search
for
new
oral
SERDs
opening
a
era
ER
+
cancer.
Elacestrant
an
orally
bioavailable
that
has
been
recently
by
FDA
postmenopausal
women
ER+,
human
epidermal
growth
factor
2-negative
(HER2-),
1
(ESR1)-mutated
advanced
or
metastatic
disease
progression
following
at
least
one
line
therapy.
Other
molecules
same
class
currently
tested
trials
are
amcenestrant,
giredestrant,
camizestrant,
imlunestrant.
current
review
article
offers
detailed
pharmacological
perspective
this
emerging
class,
which
may
help
their
possible
future
applications.
Molecular Oncology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 4, 2025
Plasma
cell‐free
DNA
(cfDNA)
analysis
to
track
estrogen
receptor
1
(
ESR1
)
mutations
is
highly
beneficial
for
the
identification
of
tumor
molecular
dynamics
and
improvement
personalized
treatments
patients
with
metastatic
breast
cancer
(MBC).
Plasma‐cfDNA
is,
up
now,
most
frequent
liquid
biopsy
analyte
used
evaluate
mutational
status.
Circulating
cell
(CTC)
enumeration
characterization
provides
important
clinical
information
in
MBC.
In
this
study,
we
investigated
whether
CTCs
circulating
(ctDNA)
provide
similar
or
complementary
mutations.
We
analyzed
both
plasma‐cfDNA
n
=
90)
paired
CTC‐derived
genomic
(gDNA;
42)
from
90
MBC
seven
Eight
out
(8.9%)
samples
tested
using
ddPLEX
Mutation
Detection
Assay
(Bio‐Rad,
Hercules,
CA,
USA),
were
found
positive
one
mutation,
whereas
11/42
(26.2%)
gDNA
at
least
mutation.
Direct
comparison
revealed
that
mutation
rate
was
higher
(11/42,
26.2%)
than
(6/42,
14.3%)
samples.
Our
results,
sensitive
assay,
reveal
a
percentage
gDNAs
ctDNA
should
be
further
evaluated
as
an
tool
identifying
guiding
individualized
therapy.
Drugs,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 17, 2025
Cyclin-dependent
kinase
4/6
inhibitors
(CDK4/6i)
have
revolutionized
the
treatment
of
hormone-receptor
positive
(HR+),
HER2
negative
(HER2−)
metastatic
breast
cancer,
and
are
now
also
established
agents
in
high-risk
intermediate-risk
HR+
early
cancer.
Several
strategies
regarding
CDK4/6i
combinations
or
continuation
beyond
progression
been
successfully
evaluated
setting,
considered
a
standard
care.
Mechanism
action
resistance
mechanisms
against
addition
to
endocrine
represent
an
important
research
topic,
for
Clinically,
efficient
substances
that
usually
well
tolerated.
However,
side
effects
differing
between
reported,
might
lead
discontinuation,
including
disease
setting.
In
adjuvant
palbociclib
has
not
improved
outcomes,
whereas
large
randomized
phase
III
trials
demonstrated
significant
disease-free
survival
benefit
ribociclib
(NATALEE
trial)
abemaciclib
(monarchE
trial).
Patient
selection,
duration,
backbone
therapy,
other
study
details
differ
these
pivotal
trials.
This
review
focuses
on
both
scientific
background
as
all
available
clinical
data
CDK4/6i,
with
particular
emphasis
their
use
Cancer Drug Resistance,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
This
review
offers
an
expert
perspective
on
biomarkers,
CDK4/6
inhibitor
efficacy,
and
therapeutic
approaches
for
managing
hormone
receptor-positive
(HR+),
human
epidermal
growth
factor
receptor-negative
(HER2-)
advanced
breast
cancer
(ABC),
particularly
after
progression.
Key
trials
have
demonstrated
that
combining
inhibitors
with
endocrine
therapy
(ET)
significantly
improves
progression-free
survival
(PFS),
median
durations
ranging
from
14.8
to
26.7
months,
overall
(OS),
reaching
up
53.7
months.
Actionable
such
as
PIK3CA
ESR1
mutations,
emerged
pivotal
tools
guide
second-line
treatment
decisions,
enabling
the
use
of
targeted
therapies
like
alpelisib
elacestrant
emphasizing
important
role
biomarkers
in
guiding
selection
therapy.
overview
aims
provide
clinicians
a
practical
up-to-date
framework
inform
decisions
improve
patient
care
context
this
challenging
disease.
Additionally,
we
emerging
novel
strategies
address
difficult
clinical
landscape.