Diabetologia,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 10, 2025
Abstract
Aims/hypothesis
Low
birthweight
infants
are
at
increased
risk
not
only
of
mortality,
but
also
type
2
diabetes
mellitus
and
CVD
in
later
life.
At
the
opposite
end
spectrum,
high
have
birth
complications,
such
as
shoulder
dystocia,
neonatal
hypoglycaemia
obesity,
similarly
CVD.
However,
previous
genome-wide
association
studies
(GWAS)
UK
Biobank
primarily
focused
on
individuals
within
‘normal’
range
excluded
with
low
(<2.5
kg
or
>4.5
kg).
The
aim
this
study
was
to
investigate
genetic
variation
associated
tail
ends
distribution,
to:
(1)
see
whether
factors
operating
these
regions
were
different
from
those
that
explained
normal
range;
(2)
explore
correlation
between
extremes
cardiometabolic
disease;
(3)
analysing
full
distribution
values,
including
extremes,
improved
ability
detect
genuine
loci
GWAS.
Methods
We
performed
case–control
GWAS
analysis
kg)
(>4.5
using
REGENIE
software
(
N
=20,947;
=12,715;
controls
=207,506)
conducted
three
continuous
birthweight,
one
birthweights,
involving
a
truncated
birthweights
2.5
4.5
third
winsorised
values
<2.5
kg.
Additionally,
we
bivariate
linkage
disequilibrium
(LD)
score
regression
estimate
low/normal/high
traits.
Results
Bivariate
LD
analyses
suggested
had
mostly
similar
aetiology
(genetic
coefficient
[
r
G
]=0.91,
95%
CI
0.83,
0.99),
whereas
there
more
evidence
for
separate
set
genes
underlying
=−0.74,
0.66,
0.82).
significantly
positively
genetically
correlated
most
traits
diseases
examined,
adiposity
anthropometric-related
winsorisation
strategy
best
terms
locus
detection,
number
independent
significant
associations
p
<5×10
−8
)
increasing
120
variants
94
270
178
loci,
27
25
been
identified
This
included
novel
low-frequency
missense
variant
ABCC8
gene,
gene
known
be
involved
congenital
hyperinsulinism,
MODY,
estimated
responsible
170
g
increase
amongst
carriers.
Conclusions/interpretation
Our
results
underscore
importance
genesis
phenotypic
diseases.
Graphical
PLoS Biology,
Journal Year:
2024,
Volume and Issue:
22(4), P. e3002511 - e3002511
Published: April 11, 2024
A
central
aim
of
genome-wide
association
studies
(GWASs)
is
to
estimate
direct
genetic
effects:
the
causal
effects
on
an
individual’s
phenotype
alleles
that
they
carry.
However,
estimates
can
be
subject
and
environmental
confounding
also
absorb
“indirect”
relatives’
genotypes.
Recently,
important
development
in
controlling
for
these
confounds
has
been
use
within-family
GWASs,
which,
because
randomness
mendelian
segregation
within
pedigrees,
are
often
interpreted
as
producing
unbiased
effects.
Here,
we
present
a
general
theoretical
analysis
influence
standard
population-based
GWASs.
We
show
that,
contrary
common
interpretation,
family-based
biased
by
confounding.
In
humans,
such
biases
will
small
per-locus,
but
compounded
when
effect-size
used
polygenic
scores
(PGSs).
illustrate
population-
using
models
assortative
mating,
population
stratification,
stabilizing
selection
GWAS
traits.
further
how
indirect
effects,
based
comparisons
parentally
transmitted
untransmitted
alleles,
suffer
substantial
conclude
while
have
placed
estimation
more
rigorous
footing,
carry
subtle
issues
interpretation
arise
from
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Aug. 23, 2022
Understanding
how
parents'
cognitive
and
non-cognitive
skills
influence
offspring
education
is
essential
for
educational,
family
economic
policy.
We
use
genetics
(GWAS-by-subtraction)
to
assess
a
latent,
broad
dimension.
To
index
parental
effects
controlling
genetic
transmission,
we
estimate
indirect
of
polygenic
scores
on
childhood
adulthood
educational
outcomes,
using
siblings
(N
=
47,459),
adoptees
6407),
parent-offspring
trios
2534)
in
three
UK
Dutch
cohorts.
find
that
affect
through
their
environment:
average
across
cohorts
designs,
explain
36-40%
population
score
associations.
However,
are
lower
achievement
the
cohort,
adoption
design.
identify
potential
causes
higher
sibling-
trio-based
estimates:
prenatal
effects,
stratification,
assortative
mating.
Our
phenotype-agnostic,
genetically
sensitive
approach
has
established
overall
environmental
skills,
facilitating
future
mechanistic
work.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: March 26, 2024
Abstract
Assortative
mating
–
the
non-random
of
individuals
with
similar
traits
is
known
to
increase
trait-specific
genetic
variance
and
similarity
between
relatives.
However,
empirical
evidence
limited
for
many
traits,
implications
hinge
on
whether
assortative
has
started
recently
or
generations
ago.
Here
we
show
theoretically
empirically
that
relatives
can
provide
presence
history
mating.
First,
employed
path
analysis
understand
how
affects
family
members
across
generations,
finding
distant
more
affected
than
close
Next,
correlated
polygenic
indices
47,135
co-parents
from
Norwegian
Mother,
Father,
Child
Cohort
Study
(MoBa)
found
in
nine
out
sixteen
examined
traits.
The
same
showed
elevated
relatives,
especially
Six
including
educational
attainment,
greater
among
offspring,
which
inconsistent
stable
over
generations.
These
results
suggest
an
ongoing
familial
these
this
research
extend
methodology
understanding
social
economic
disparities.
Nature,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
Abstract
Although
rare
neurodevelopmental
conditions
have
a
large
Mendelian
component
1
,
common
genetic
variants
also
contribute
to
risk
2,3
.
However,
little
is
known
about
how
this
polygenic
distributed
among
patients
with
these
and
their
parents
nor
its
interplay
variants.
It
unclear
whether
background
affects
directly
through
alleles
transmitted
from
children,
or
indirect
effects
mediated
the
family
environment
4
play
role.
Here
we
addressed
questions
using
data
11,573
conditions,
9,128
of
26,869
controls.
Common
explained
around
10%
variance
in
risk.
Patients
monogenic
diagnosis
had
significantly
less
than
those
without,
supporting
liability
threshold
model
5
A
score
for
showed
only
direct
effect.
By
contrast,
scores
educational
attainment
cognitive
performance
no
effect,
but
non-transmitted
were
correlated
child’s
risk,
potentially
due
and/or
parental
assortment
traits
Indeed,
as
expected
under
assortment,
show
that
variant
predisposition
These
findings
indicate
future
studies
should
investigate
possible
role
nature
on
consider
contribution
simultaneously
when
studying
cognition-related
phenotypes.
Molecular Psychiatry,
Journal Year:
2022,
Volume and Issue:
28(4), P. 1731 - 1738
Published: Nov. 16, 2022
Abstract
Identifying
mechanisms
underlying
the
intergenerational
transmission
of
risk
for
attention-deficit/hyperactivity
disorder
(ADHD)
traits
can
inform
interventions
and
provide
insights
into
role
parents
in
shaping
their
children’s
outcomes.
We
investigated
whether
genetic
nurture
(environmentally
mediated
effects)
underlie
associations
between
polygenic
scores
indexing
parental
protective
factors
offspring’s
ADHD
traits.
This
birth
cohort
study
included
19,506
genotyped
mother-father-offspring
trios
from
Norwegian
Mother,
Father
Child
Cohort
Study.
Polygenic
were
calculated
previously
associated
with
ADHD,
including
psychopathology,
substance
use,
neuroticism,
educational
attainment,
cognitive
performance.
Mothers
reported
on
8-year-old
(
n
=
9,454
children)
using
Parent/Teacher
Rating
Scale
Disruptive
Behaviour
Disorders.
found
that
maternal
paternal
child
decreased
significantly
when
adjusting
score
p
Δβ
9.95
×
10
−17
1.48
−14
estimates),
suggesting
risk.
Similar
patterns
observed
smoking,
cognition.
The
neuroticism
remained
ratings
even
after
score,
indicating
nurture.
There
was
no
robust
evidence
other
factors.
Our
findings
indicate
is
largely
explained
by
variants
to
offspring
rather
than
Observational
childhood
outcomes
should
not
be
interpreted
as
predominantly
environmentally
effects.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Feb. 27, 2023
Abstract
A
central
aim
of
genome-wide
association
studies
(GWASs)
is
to
estimate
direct
genetic
effects:
the
causal
effects
on
an
individual’s
phenotype
alleles
that
they
carry.
However,
estimates
can
be
subject
and
environmental
confounding,
also
absorb
‘indirect’
relatives’
genotypes.
Recently,
important
development
in
controlling
for
these
confounds
has
been
use
within-family
GWASs,
which,
because
randomness
Mendelian
segregation
within
pedigrees,
are
often
interpreted
as
producing
unbiased
effects.
Here,
we
present
a
general
theoretical
analysis
influence
confounding
standard
population-based
GWASs.
We
show
that,
contrary
common
interpretation,
family-based
biased
by
confounding.
In
humans,
such
biases
will
small
per-locus,
but
compounded
when
effect
size
used
polygenic
scores.
illustrate
population-
using
models
assortative
mating,
population
stratification,
stabilizing
selection
GWAS
traits.
further
how
indirect
effects,
based
comparisons
parentally
transmitted
untransmitted
alleles,
suffer
substantial
addition
known
arise
GWASs
interactions
between
family
members
ignored,
from
gene-by-environment
(G×E)
parental
genotypes
not
distributed
identically
across
interacting
backgrounds.
conclude
while
have
placed
estimation
more
rigorous
footing,
carry
subtle
issues
interpretation
interactions.
JCPP Advances,
Journal Year:
2023,
Volume and Issue:
3(1)
Published: Jan. 27, 2023
Fundamental
questions
about
the
roles
of
genes,
environments,
and
their
interplay
in
developmental
psychopathology
have
traditionally
been
domain
twin
family
studies.
More
recently,
rapidly
growing
availability
large
genomic
datasets,
composed
unrelated
individuals,
has
generated
novel
insights.
However,
there
are
major
stumbling
blocks.
Only
a
small
fraction
total
genetic
influence
on
childhood
estimated
from
data
is
captured
with
measured
DNA.
Moreover,
identified
using
DNA
often
confounded
indirect
effects
relatives,
population
stratification
assortative
mating.