6-111707998-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP2 PP3

The NM_002037.5(FYN):c.367C>T(p.Arg123Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,480 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: FYN NM_002037.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.99

Genes affected

FYN (HGNC:4037): (FYN proto-oncogene, Src family tyrosine kinase) This gene is a member of the protein-tyrosine kinase oncogene family. It encodes a membrane-associated tyrosine kinase that has been implicated in the control of cell growth. The protein associates with the p85 subunit of phosphatidylinositol 3-kinase and interacts with the fyn-binding protein. Alternatively spliced transcript variants encoding distinct isoforms exist. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PP2: Missense variant where missense usually causes diseases, FYN
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.835

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FYN	NM_002037.5	c.367C>T	p.Arg123Cys	missense_variant	6/14	ENST00000354650.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FYN	ENST00000354650.7	c.367C>T	p.Arg123Cys	missense_variant	6/14	1	NM_002037.5	P3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251276 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135806

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1461480 Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3 AN XY: 727108

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

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 04, 2022

The c.367C>T (p.R123C) alteration is located in exon 1 (coding exon 1) of the FYN gene. This alteration results from a C to T substitution at nucleotide position 367, causing the arginine (R) at amino acid position 123 to be replaced by a cysteine (C). 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	Benign	0.32
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Pathogenic	0.22
Cadd	Pathogenic	34
Dann	Pathogenic	1.0
Eigen	Pathogenic	0.94
Eigen_PC	Pathogenic	0.93
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.94	D;.;.;D;D;.;D;D;D;D;D;D;D
M_CAP	Benign	0.036	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.41	T
MutationAssessor	Uncertain	2.4	M;M;M;M;M;M;.;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.88	D
PROVEAN	Pathogenic	-5.0	D;D;D;D;D;D;D;D;D;D;D;D;D
REVEL	Uncertain	0.55
Sift	Uncertain	0.017	D;D;D;D;D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.014	D;D;D;D;D;D;.;.;.;D;.;D;.
Polyphen		1.0	.;.;D;D;D;.;.;.;.;.;.;.;.
Vest4		0.68
MutPred		0.58		Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);Loss of disorder (P = 0.0353);
MVP		0.91
MPC		2.7
ClinPred		0.99	D
GERP RS		6.2
Varity_R		0.88
gMVP		0.77

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: rs766363948; hg19: chr6-112029201;