rs778297232

Variant names:

• chr5-126465509-C-T
• rs778297232
• NM_023927.4:c.167C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_023927.4(GRAMD2B):​c.167C>T​(p.Ala56Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000322 in 1,613,980 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A56A) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000030 (0 hom.)
• Consequence: GRAMD2B NM_023927.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.57
• Publications: 1 publications found

Genes affected

GRAMD2B (HGNC:24911): (GRAM domain containing 2B) Enables identical protein binding activity. Located in cytoplasmic microtubule. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000250602 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09462592).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023927.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRAMD2B	NM_023927.4	MANE Select	c.167C>T	p.Ala56Val	missense	Exon 2 of 14	NP_076416.2	Q96HH9-1
	GRAMD2B	NM_001146319.3		c.212C>T	p.Ala71Val	missense	Exon 2 of 14	NP_001139791.1	Q96HH9-3
	GRAMD2B	NM_001349544.2		c.148C>T	p.Arg50Trp	missense	Exon 2 of 15	NP_001336473.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRAMD2B	ENST00000285689.8	TSL:1 MANE Select	c.167C>T	p.Ala56Val	missense	Exon 2 of 14	ENSP00000285689.3	Q96HH9-1
	GRAMD2B	ENST00000921003.1		c.167C>T	p.Ala56Val	missense	Exon 2 of 15	ENSP00000591062.1
	GRAMD2B	ENST00000513040.5	TSL:2	c.212C>T	p.Ala71Val	missense	Exon 2 of 14	ENSP00000426120.1	Q96HH9-3

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152114 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

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: 0.0000588

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.0000318 AC: 8 AN: 251412 AF XY: 0.0000294

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000868

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000301 AC: 44 AN: 1461866 Hom.: 0 Cov.: 31 AF XY: 0.0000275 AC XY: 20 AN XY: 727238

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.000112 AC: 5 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000315 AC: 35 AN: 1111994

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152114 Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4 AN XY: 74326

African (AFR) AF: 0.0000242 AC: 1 AN: 41406

American (AMR) AF: 0.000131 AC: 2 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4814

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10602

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68020

Other (OTH) AF: 0.000478 AC: 1 AN: 2092

Alfa AF: 0.000132 Hom.: 0

Bravo AF: 0.0000453

ExAC AF: 0.0000247 AC: 3

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0098	T
Eigen	Benign	0.14
Eigen_PC	Benign	0.15
FATHMM_MKL	Benign	0.52	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.095	T
MetaSVM	Benign	-1.0	T
PhyloP100		2.6
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.81	N
REVEL	Benign	0.058
Sift	Benign	0.46	T
Sift4G	Benign	1.0	T
Polyphen		0.043	B
Vest4		0.33
MutPred		0.16		Loss of relative solvent accessibility (P = 0.0404)
MVP		0.46
MPC		0.21
ClinPred		0.27	T
GERP RS		3.9
PromoterAI		0.013	Neutral
Varity_R		0.057
gMVP		0.25
Mutation Taster		=84/16	polymorphism

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

Other links and lift over

dbSNP: rs778297232; hg19: chr5-125801201; COSMIC: COSV53506398;