chr7-50619282-C-G

Position:

• chr7-50619282-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001350814.2(GRB10):​c.665G>C​(p.Arg222Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: GRB10 NM_001350814.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91

Genes affected

GRB10 (HGNC:4564): (growth factor receptor bound protein 10) The product of this gene belongs to a small family of adapter proteins that are known to interact with a number of receptor tyrosine kinases and signaling molecules. This gene encodes a growth factor receptor-binding protein that interacts with insulin receptors and insulin-like growth-factor receptors. Overexpression of some isoforms of the encoded protein inhibits tyrosine kinase activity and results in growth suppression. This gene is imprinted in a highly isoform- and tissue-specific manner, with expression observed from the paternal allele in the brain, and from the maternal allele in the placental trophoblasts. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Oct 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.904

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRB10	NM_001350814.2	c.665G>C	p.Arg222Thr	missense_variant	9/19	ENST00000401949.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRB10	ENST00000401949.6	c.665G>C	p.Arg222Thr	missense_variant	9/19	1	NM_001350814.2	P3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 33

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

May 21, 2024

The c.665G>C (p.R222T) alteration is located in exon 6 (coding exon 6) of the GRB10 gene. This alteration results from a G to C substitution at nucleotide position 665, causing the arginine (R) at amino acid position 222 to be replaced by a threonine (T). 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	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.45	D
BayesDel_noAF	Pathogenic	0.41
CADD	Uncertain	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.59	.;D;.;.;.;.;.;.;D;.;.;.;.;.
Eigen	Pathogenic	0.90
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D;D;.;.;.;D;.;D;.;.;.;.;D;D
M_CAP	Uncertain	0.17	D
MetaRNN	Pathogenic	0.90	D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.67	D
MutationAssessor	Pathogenic	3.2	.;M;.;.;.;.;.;M;M;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.71	T
PROVEAN	Pathogenic	-5.5	D;D;D;D;.;.;D;D;D;D;.;D;.;D
REVEL	Pathogenic	0.84
Sift	Uncertain	0.0010	D;D;D;D;.;.;D;D;D;D;.;D;.;D
Sift4G	Pathogenic	0.0	D;D;D;D;.;.;D;D;D;D;.;D;.;D
Polyphen		1.0	.;D;.;.;.;.;.;D;D;.;.;.;D;.
Vest4		0.96
MutPred		0.72		.;Loss of helix (P = 0.1299);.;.;.;.;.;Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);.;.;.;.;.;
MVP		0.98
MPC		2.4
ClinPred		1.0	D
GERP RS		6.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.88
gMVP		0.93

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: chr7-50686979;