Genetic Variant GRAMD1A:p.Leu234Ser (chr19-35013350-T-C) – 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.701T>C(p.Leu234Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000386 in 1,554,144 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000036 ( 0 hom. )

Consequence

GRAMD1A
NM_020895.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.528

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:

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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=0.06286296).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRAMD1A	NM_020895.5 link	c.701T>C	p.Leu234Ser	missense_variant	Exon 8 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.701T>C	p.Leu234Ser	missense_variant	Exon 8 of 20	1	NM_020895.5	ENSP00000441032.1		Q96CP6-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

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:

0.0000120

AC:

AN:

166866

Hom.:

AF XY:

0.0000113

AC XY:

AN XY:

88690

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000170

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:

0.00000357

AC:

AN:

1402004

Hom.:

Cov.:

AF XY:

0.00000289

AC XY:

AN XY:

692692

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000138

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152140

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000171

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 02, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.701T>C (p.L234S) alteration is located in exon 8 (coding exon 8) of the GRAMD1A gene. This alteration results from a T to C substitution at nucleotide position 701, causing the leucine (L) at amino acid position 234 to be replaced by a serine (S). 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

0.12

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.0015

T;T;.

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.48

LIST_S2

Benign

0.72

T;T;T

M_CAP

Benign

0.0055

MetaRNN

Benign

0.063

T;T;T

MetaSVM

Benign

-1.0

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.24

.;N;N

REVEL

Benign

0.11

Sift

Benign

0.80

.;T;T

Sift4G

Benign

0.79

T;T;T

Polyphen

0.14, 0.022

.;B;B

Vest4

0.28

MutPred

0.51

.;Gain of disorder (P = 0.0049);.;

MVP

0.043

MPC

0.53

ClinPred

0.078

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.11

gMVP

0.23

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