chr13-80337468-C-T

Variant names:

• chr13-80337468-C-T
• rs746523784
• NM_005842.4:c.238G>A

Variant summary

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

The NM_005842.4(SPRY2):​c.238G>A​(p.Glu80Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E80Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SPRY2 NM_005842.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.96
• Publications: 0 publications found

Genes affected

SPRY2 (HGNC:11270): (sprouty RTK signaling antagonist 2) This gene encodes a protein belonging to the sprouty family. The encoded protein contains a carboxyl-terminal cysteine-rich domain essential for the inhibitory activity on receptor tyrosine kinase signaling proteins and is required for growth factor stimulated translocation of the protein to membrane ruffles. In primary dermal endothelial cells this gene is transiently upregulated in response to fibroblast growth factor two. This protein is indirectly involved in the non-cell autonomous inhibitory effect on fibroblast growth factor two signaling. The protein interacts with Cas-Br-M (murine) ectropic retroviral transforming sequence, and can function as a bimodal regulator of epidermal growth factor receptor/mitogen-activated protein kinase signaling. This protein may play a role in alveoli branching during lung development as shown by a similar mouse protein. [provided by RefSeq, Jul 2008]

SPRY2 Gene-Disease associations (from GenCC):

• IgA nephropathy, susceptibility to, 3

  Inheritance: Unknown, AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• Tourette syndrome

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

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=0.2626932).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005842.4. 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
	SPRY2	NM_005842.4	MANE Select	c.238G>A	p.Glu80Lys	missense	Exon 2 of 2	NP_005833.1	O43597
	SPRY2	NM_001318536.1		c.238G>A	p.Glu80Lys	missense	Exon 2 of 2	NP_001305465.1	O43597
	SPRY2	NM_001318537.1		c.238G>A	p.Glu80Lys	missense	Exon 2 of 2	NP_001305466.1	O43597

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPRY2	ENST00000377104.4	TSL:1 MANE Select	c.238G>A	p.Glu80Lys	missense	Exon 2 of 2	ENSP00000366308.3	O43597
	SPRY2	ENST00000377102.5	TSL:1	c.238G>A	p.Glu80Lys	missense	Exon 2 of 2	ENSP00000366306.1	O43597
	SPRY2	ENST00000909616.1		c.238G>A	p.Glu80Lys	missense	Exon 2 of 2	ENSP00000579675.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461888 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 727244

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

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

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

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.38
BayesDel_addAF	Uncertain	0.065	T
BayesDel_noAF	Benign	-0.14
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.23	T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.26	T
MetaSVM	Benign	-0.82	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		2.0
PrimateAI	Pathogenic	0.85	D
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.15
Sift	Uncertain	0.014	D
Sift4G	Uncertain	0.057	T
Polyphen		0.28	B
Vest4		0.38
MutPred		0.34		Gain of catalytic residue at L85 (P = 0)
MVP		0.60
MPC		1.4
ClinPred		0.97	D
GERP RS		5.5
Varity_R		0.23
gMVP		0.40
Mutation Taster		=81/19	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: rs746523784; hg19: chr13-80911603;