Variant 20-3660641-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_022139.4(GFRA4):c.522C>G(p.Asn174Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000000715 in 1,398,940 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

GFRA4
NM_022139.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.35

Variant links:

Genes affected

GFRA4 (HGNC:13821): (GDNF family receptor alpha 4) The protein encoded by this gene is a member of the GDNF receptor family. It is a glycosylphosphatidylinositol(GPI)-linked cell surface receptor for persephin, and mediates activation of the RET tyrosine kinase receptor. This gene is a candidate gene for RET-associated diseases. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

GFRA4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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, 0.929

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GFRA4	NM_022139.4 linkuse as main transcript	c.522C>G	p.Asn174Lys	missense_variant	4/6	ENST00000290417.7	NP_071422.1	Q9GZZ7-2
GFRA4	NM_145762.3 linkuse as main transcript	c.612C>G	p.Asn204Lys	missense_variant	3/5		NP_665705.1	Q9GZZ7-1
GFRA4	XM_005260793.2 linkuse as main transcript	c.533C>G	p.Thr178Ser	missense_variant	4/4		XP_005260850.1	Q9GZZ7-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
GFRA4	ENST00000290417.7 linkuse as main transcript	c.522C>G	p.Asn174Lys	missense_variant	4/6	1	NM_022139.4	ENSP00000290417.2	Q9GZZ7-2
GFRA4	ENST00000319242.8 linkuse as main transcript	c.612C>G	p.Asn204Lys	missense_variant	3/5	1		ENSP00000313423.3	Q9GZZ7-1
GFRA4	ENST00000477160.1 linkuse as main transcript	n.533C>G		non_coding_transcript_exon_variant	4/4	1		ENSP00000435801.1	Q9GZZ7-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.15e-7

AC:

AN:

1398940

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

690160

show subpopulations

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:

9.26e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 20, 2024

The c.612C>G (p.N204K) alteration is located in exon 3 (coding exon 3) of the GFRA4 gene. This alteration results from a C to G substitution at nucleotide position 612, causing the asparagine (N) at amino acid position 204 to be replaced by a lysine (K). 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

Uncertain

0.016

BayesDel_noAF

Benign

-0.21

CADD

Pathogenic

DANN

Benign

0.43

DEOGEN2

Uncertain

0.60

.;D

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.85

T;D

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.93

D;D

MetaSVM

Benign

-0.35

PrimateAI

Pathogenic

0.93

PROVEAN

Pathogenic

-5.8

D;D

REVEL

Uncertain

0.43

Sift

Uncertain

0.020

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.94

MutPred

0.78

.;Gain of methylation at N204 (P = 0.0075);

MVP

0.86

MPC

0.87

ClinPred

0.99

GERP RS

3.1

Varity_R

0.64

gMVP

0.94

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over