19-35009198-C-T

Position:

• chr19-35009198-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001320035.2(GRAMD1A):​c.-502C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,422 control chromosomes in the GnomAD database, with no homozygous occurrence. 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)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: GRAMD1A NM_001320035.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.42

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21612409).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GRAMD1A	NM_020895.5	c.88C>T	p.Arg30Trp	missense_variant	2/20	ENST00000317991.10	NP_065946.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GRAMD1A	ENST00000317991.10	c.88C>T	p.Arg30Trp	missense_variant	2/20	1	NM_020895.5	ENSP00000441032.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461422 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727054

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00

GnomAD4 genome Cov.: 32

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

Aug 02, 2021

The c.88C>T (p.R30W) alteration is located in exon 2 (coding exon 2) of the GRAMD1A gene. This alteration results from a C to T substitution at nucleotide position 88, causing the arginine (R) at amino acid position 30 to be replaced by a tryptophan (W). 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	0.17
BayesDel_addAF	Benign	-0.091	T
BayesDel_noAF	Benign	-0.37
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.025	T;T;.;T
Eigen	Uncertain	0.32
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Benign	0.65	D
LIST_S2	Uncertain	0.96	D;D;D;D
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.22	T;T;T;T
MetaSVM	Benign	-1.0	T
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-2.2	.;N;N;.
REVEL	Benign	0.11
Sift	Uncertain	0.026	.;D;D;.
Sift4G	Uncertain	0.0080	D;D;D;D
Polyphen		1.0	.;D;D;.
Vest4		0.35
MutPred		0.18		.;Loss of glycosylation at S29 (P = 0.0624);Loss of glycosylation at S29 (P = 0.0624);Loss of glycosylation at S29 (P = 0.0624);
MVP		0.043
MPC		0.38
ClinPred		0.91	D
GERP RS		4.7
Varity_R		0.12
gMVP		0.42

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-35500102;