ESMO Open,
Год журнала:
2019,
Номер
4(1), С. e000442 - e000442
Опубликована: Янв. 1, 2019
Clinical
evidence
demonstrates
that
treatment
with
immune
checkpoint
inhibitor
immunotherapy
agents
can
have
considerable
benefit
across
multiple
tumours.
However,
there
is
a
need
for
the
development
of
predictive
biomarkers
identify
patients
who
are
most
likely
to
respond
immunotherapy.
Comprehensive
characterisation
tumours
using
genomic,
transcriptomic,
and
proteomic
approaches
continues
lead
way
in
advancing
precision
medicine.
Genetic
correlates
response
therapy
been
known
some
time,
but
recent
clinical
has
strengthened
significance
high
tumour
mutational
burden
(TMB)
as
biomarker
hence
rational
target
Concordantly,
inhibitors
changed
practice
lung
cancer
melanoma,
which
types
highest
burdens.
TMB
an
implementable
approach
molecular
biology
and/or
pathology
laboratories
provides
quantitative
measure
total
number
mutations
tissue
be
assessed
by
whole
genome,
exome,
or
large
targeted
gene
panel
sequencing
biopsied
material.
Currently,
assessment
not
standardised
research
studies.
As
affects
decisions,
it
essential
unify
allow
reliable,
comparable
results
When
implementing
measurement
assays,
important
consider
factors
may
impact
method
workflow,
assay,
interpretation
data.
Such
include
biopsy
sample
type,
quality
quantity,
genome
coverage,
platform,
bioinformatic
pipeline,
definitions
final
threshold
determines
TMB.
This
review
outlines
adoption
into
practice,
providing
understanding
assay
considerations
throughout
journey,
suggests
principles
effectively
implement
assays
setting
aid
optimise
decisions.
New England Journal of Medicine,
Год журнала:
2018,
Номер
379(23), С. 2220 - 2229
Опубликована: Сен. 25, 2018
Enhancing
tumor-specific
T-cell
immunity
by
inhibiting
programmed
death
ligand
1
(PD-L1)–programmed
(PD-1)
signaling
has
shown
promise
in
the
treatment
of
extensive-stage
small-cell
lung
cancer.
Combining
checkpoint
inhibition
with
cytotoxic
chemotherapy
may
have
a
synergistic
effect
and
improve
efficacy.
New England Journal of Medicine,
Год журнала:
2020,
Номер
383(14), С. 1328 - 1339
Опубликована: Сен. 30, 2020
The
efficacy
and
safety
of
the
anti-programmed
death
ligand
1
(PD-L1)
monoclonal
antibody
atezolizumab,
as
compared
with
those
platinum-based
chemotherapy,
first-line
treatment
for
patients
metastatic
non-small-cell
lung
cancer
(NSCLC)
PD-L1
expression
are
not
known.We
conducted
a
randomized,
open-label,
phase
3
trial
involving
nonsquamous
or
squamous
NSCLC
who
had
previously
received
chemotherapy
on
at
least
1%
tumor
cells
tumor-infiltrating
immune
assessed
by
SP142
immunohistochemical
assay.
Patients
were
assigned
in
1:1
ratio
to
receive
atezolizumab
chemotherapy.
Overall
survival
(primary
end
point)
was
tested
hierarchically
according
status
among
intention-to-treat
population
whose
tumors
wild-type
respect
EGFR
mutations
ALK
translocations.
Within
tumors,
overall
progression-free
also
prospectively
subgroups
defined
findings
two
assays
well
blood-based
mutational
burden.Overall,
572
enrolled.
In
subgroup
highest
(205
patients),
median
longer
7.1
months
group
than
(20.2
vs.
13.1
months;
hazard
death,
0.59;
P
=
0.01).
Among
all
could
be
evaluated
safety,
adverse
events
occurred
90.2%
94.7%
group;
grade
4
30.1%
52.5%
respective
groups.
favored
high
burden.Atezolizumab
resulted
significantly
expression,
regardless
histologic
type.
(Funded
F.
Hoffmann-La
Roche/Genentech;
IMpower110
ClinicalTrials.gov
number,
NCT02409342.).
Abstract
The
number
of
druggable
tumor-specific
molecular
aberrations
has
grown
substantially
in
the
past
decade,
with
a
significant
survival
benefit
obtained
from
biomarker
matching
therapies
several
cancer
types.
Molecular
pathology
therefore
become
fundamental
not
only
to
inform
on
tumor
diagnosis
and
prognosis
but
also
drive
therapeutic
decisions
daily
practice.
introduction
next-generation
sequencing
technologies
rising
large-scale
profiling
programs
across
institutions
worldwide
have
revolutionized
field
precision
oncology.
As
comprehensive
genomic
analyses
increasingly
available
both
clinical
research
settings,
healthcare
professionals
are
faced
complex
tasks
result
interpretation
translation.
This
review
summarizes
current
upcoming
approaches
implement
medicine,
highlighting
challenges
potential
solutions
facilitate
maximize
utility
results.
We
describe
novel
characterization
strategies
beyond
DNA
sequencing,
such
as
transcriptomics,
immunophenotyping,
epigenetic
profiling,
single-cell
analyses.
applications
liquid
biopsies
evaluate
blood-based
biomarkers,
circulating
cells
nucleic
acids.
Last,
lessons
learned
existing
limitations
genotype-derived
provide
insights
into
ways
expand
medicine
genomics.
Cancer Discovery,
Год журнала:
2020,
Номер
10(12), С. 1808 - 1825
Опубликована: Ноя. 3, 2020
Tumor
mutational
burden
(TMB),
defined
as
the
number
of
somatic
mutations
per
megabase
interrogated
genomic
sequence,
varies
across
malignancies.
Panel
sequencing-based
estimates
TMB
have
largely
replaced
whole-exome
sequencing-derived
in
clinic.
Retrospective
evidence
suggests
that
can
predict
efficacy
immune
checkpoint
inhibitors,
and
data
from
KEYNOTE-158
led
to
recent
FDA
approval
pembrolizumab
for
TMB-high
tumor
subgroup.
Unmet
needs
include
prospective
validation
cutoffs
relationship
type
patient
outcomes.
Furthermore,
standardization
harmonization
measurement
test
platforms
are
important
successful
implementation
clinical
practice.
SIGNIFICANCE:
Evaluation
a
predictive
biomarker
creates
need
harmonize
panel-based
estimation
standardize
its
reporting.
improve
accuracy
immunotherapy
outcomes,
has
potential
expand
candidate
pool
patients
treatment
with
inhibitors.