Genetic Variant GRAMD1A:p.Ala283Val (chr19-35013669-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_020895.5(GRAMD1A):c.848C>T(p.Ala283Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000527 in 1,611,674 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

GRAMD1A
NM_020895.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.24

Variant links:

Genes affected

GRAMD1A (HGNC:29305): (GRAM domain containing 1A) Predicted to enable cholesterol binding activity and cholesterol transfer activity. Predicted to be involved in cellular response to cholesterol. Located in cytosol; organelle membrane contact site; and plasma membrane. Is extrinsic component of cytoplasmic side of plasma membrane and intrinsic component of endoplasmic reticulum membrane. [provided by Alliance of Genome Resources, Apr 2022]

GRAMD1A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.040299535).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRAMD1A	NM_020895.5 link	c.848C>T	p.Ala283Val	missense_variant	Exon 9 of 20	ENST00000317991.10	NP_065946.2	Q96CP6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRAMD1A	ENST00000317991.10 link	c.848C>T	p.Ala283Val	missense_variant	Exon 9 of 20	1	NM_020895.5	ENSP00000441032.1		Q96CP6-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000845

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000527

AC:

AN:

246744

Hom.:

AF XY:

0.0000373

AC XY:

AN XY:

134072

show subpopulations

Gnomad AFR exome

AF:

0.000785

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000336

AC:

AN:

1459414

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

725856

show subpopulations

Gnomad4 AFR exome

AF:

0.00114

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.000236

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.000843

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000433

Hom.:

Bravo

AF:

0.000272

ESP6500AA

AF:

0.000242

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000661

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 15, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.848C>T (p.A283V) alteration is located in exon 9 (coding exon 9) of the GRAMD1A gene. This alteration results from a C to T substitution at nucleotide position 848, causing the alanine (A) at amino acid position 283 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0099

T;T;.

Eigen

Benign

-0.27

Eigen_PC

Benign

-0.17

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.87

D;T;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.040

T;T;T

MetaSVM

Benign

-0.88

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.78

.;N;N

REVEL

Benign

0.051

Sift

Benign

0.26

.;T;T

Sift4G

Benign

0.32

T;T;T

Polyphen

0.15, 0.77

.;B;P

Vest4

0.51

MVP

0.043

MPC

0.42

ClinPred

0.032

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.084

gMVP

0.28

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over