8-21750657-G-A

Position:

• chr8-21750657-G-A

Variant summary

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

The NM_001495.5(GFRA2):​c.725C>T​(p.Ser242Phe) 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 drug response (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GFRA2 NM_001495.5 missense
• Clinical Significance: drug response no assertion criteria provided O:1
• Conservation: PhyloP100: 10.0

Genes affected

GFRA2 (HGNC:4244): (GDNF family receptor alpha 2) Glial cell line-derived neurotrophic factor (GDNF) and neurturin (NTN) are two structurally related, potent neurotrophic factors that play key roles in the control of neuron survival and differentiation. The protein encoded by this gene is a member of the GDNF receptor family. It is a glycosylphosphatidylinositol(GPI)-linked cell surface receptor for both GDNF and NTN, and mediates activation of the RET tyrosine kinase receptor. This encoded protein acts preferentially as a receptor for NTN compared to its other family member, GDNF family receptor alpha 1. This gene is a candidate gene for RET-associated diseases. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

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, 0.855

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GFRA2	NM_001495.5	c.725C>T	p.Ser242Phe	missense_variant	4/9	ENST00000524240.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GFRA2	ENST00000524240.6	c.725C>T	p.Ser242Phe	missense_variant	4/9	1	NM_001495.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: drug response

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Pazopanib response Other:1

drug response, no assertion criteria provided

case-control

Center for Personalized Medicine, Roswell Park Cancer Institute

Jul 16, 2015

- metabolically responsive

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.040
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.54	D;D;.;.;.
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.86	D;D;D;D;D
MetaSVM	Uncertain	-0.18	T
MutationAssessor	Uncertain	2.6	M;M;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.79	T
PROVEAN	Pathogenic	-5.4	D;D;D;D;D
REVEL	Uncertain	0.64
Sift	Pathogenic	0.0	D;D;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D;.
Polyphen		1.0	D;D;D;.;.
Vest4		0.94
MutPred		0.44		Loss of disorder (P = 0.006);Loss of disorder (P = 0.006);.;.;Loss of disorder (P = 0.006);
MVP		0.90
MPC		1.9
ClinPred		1.0	D
GERP RS		4.8
Varity_R		0.92
gMVP		0.92

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

LitVar

Other links and lift over

dbSNP: rs796065050; hg19: chr8-21608169; COSMIC: COSV104534859;