11-123608775-G-A

Position:

• chr11-123608775-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001387025.1(GRAMD1B):​c.1630G>A​(p.Asp544Asn) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GRAMD1B NM_001387025.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.91

Genes affected

GRAMD1B (HGNC:29214): (GRAM domain containing 1B) Predicted to enable cholesterol binding activity; cholesterol transfer activity; and phospholipid binding activity. Predicted to be involved in cellular response to cholesterol and cholesterol homeostasis. Located in endoplasmic reticulum membrane; endoplasmic reticulum-plasma membrane contact site; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2760368).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRAMD1B	NM_001387025.1	c.1630G>A	p.Asp544Asn	missense_variant	12/20	ENST00000635736.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRAMD1B	ENST00000635736.2	c.1630G>A	p.Asp544Asn	missense_variant	12/20	5	NM_001387025.1	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 13, 2022

The c.1201G>A (p.D401N) alteration is located in exon 11 (coding exon 11) of the GRAMD1B gene. This alteration results from a G to A substitution at nucleotide position 1201, causing the aspartic acid (D) at amino acid position 401 to be replaced by an asparagine (N). 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	0.11
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.026	T;T;T;.;T;T;.;.;.;.
Eigen	Uncertain	0.41
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	D;D;D;D;D;D;D;D;D;D
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.28	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.95	T
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.69	T
Polyphen		0.80, 0.76	.;.;.;.;.;P;.;.;.;P
Vest4		0.29, 0.30, 0.29, 0.28, 0.20
MutPred		0.38		.;.;.;Gain of helix (P = 0.0199);.;.;.;.;.;.;
MVP		0.22
MPC		0.94
ClinPred		0.93	D
GERP RS		5.5
Varity_R		0.15
gMVP		0.75

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

Other links and lift over

dbSNP: rs745517263; hg19: chr11-123479483; COSMIC: COSV104640896; COSMIC: COSV104640896;