chr4-122893167-G-A

Position:

• chr4-122893167-G-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Moderate BP6 BP7 BS2

The NM_007083.5(NUDT6):​c.612C>T​(p.Ser204=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00145 in 1,613,914 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.00083 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0015 (3 hom.)
• Consequence: NUDT6 NM_007083.5 synonymous
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: 2.53

Genes affected

NUDT6 (HGNC:8053): (nudix hydrolase 6) This gene overlaps and lies on the opposite strand from FGF2 gene, and is thought to be the FGF2 antisense gene. The two genes are independently transcribed, and their expression shows an inverse relationship, suggesting that this antisense transcript may regulate FGF2 expression. This gene has also been shown to have hormone-regulatory and antiproliferative actions in the pituitary that are independent of FGF2 expression. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2011]

FGF2 (HGNC:3676): (fibroblast growth factor 2) The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members bind heparin and possess broad mitogenic and angiogenic activities. This protein has been implicated in diverse biological processes, such as limb and nervous system development, wound healing, and tumor growth. The mRNA for this gene contains multiple polyadenylation sites, and is alternatively translated from non-AUG (CUG) and AUG initiation codons, resulting in five different isoforms with distinct properties. The CUG-initiated isoforms are localized in the nucleus and are responsible for the intracrine effect, whereas, the AUG-initiated form is mostly cytosolic and is responsible for the paracrine and autocrine effects of this FGF. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.29).
• BP6: Variant 4-122893167-G-A is Benign according to our data. Variant chr4-122893167-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3035036.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP7: Synonymous conserved (PhyloP=2.53 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NUDT6	NM_007083.5	c.612C>T	p.Ser204=	synonymous_variant	5/5	ENST00000304430.10	NP_009014.2
FGF2	NM_001361665.2	c.*771G>A		3_prime_UTR_variant	3/3	ENST00000644866.2	NP_001348594.1
NUDT6	NM_198041.3	c.105C>T	p.Ser35=	synonymous_variant	5/5		NP_932158.1
FGF2	NM_002006.6	c.*771G>A		3_prime_UTR_variant	3/3		NP_001997.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NUDT6	ENST00000304430.10	c.612C>T	p.Ser204=	synonymous_variant	5/5	1	NM_007083.5	ENSP00000306070	P1
FGF2	ENST00000644866.2	c.*771G>A		3_prime_UTR_variant	3/3		NM_001361665.2	ENSP00000494222	P1

Frequencies

GnomAD3 genomes AF: 0.000835 AC: 127 AN: 152132 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00124

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00138

Gnomad OTH AF: 0.00143

GnomAD3 exomes AF: 0.000747 AC: 187 AN: 250210 Hom.: 0 AF XY: 0.000805 AC XY: 109 AN XY: 135362

Gnomad AFR exome AF: 0.000370

Gnomad AMR exome AF: 0.000320

Gnomad ASJ exome AF: 0.0000995

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000164

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00143

Gnomad OTH exome AF: 0.000492

GnomAD4 exome AF: 0.00151 AC: 2212 AN: 1461664 Hom.: 3 Cov.: 31 AF XY: 0.00151 AC XY: 1100 AN XY: 727106

Gnomad4 AFR exome AF: 0.000299

Gnomad4 AMR exome AF: 0.000470

Gnomad4 ASJ exome AF: 0.000153

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000197

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00189

Gnomad4 OTH exome AF: 0.000878

GnomAD4 genome AF: 0.000834 AC: 127 AN: 152250 Hom.: 0 Cov.: 33 AF XY: 0.000833 AC XY: 62 AN XY: 74432

Gnomad4 AFR AF: 0.000241

Gnomad4 AMR AF: 0.00124

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00138

Gnomad4 OTH AF: 0.00142

Alfa AF: 0.00134 Hom.: 0

Bravo AF: 0.00107

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

NUDT6-related disorder Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 09, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.29
CADD	Benign	12
DANN	Benign	0.90

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs113836715; hg19: chr4-123814322; COSMIC: COSV52650604; COSMIC: COSV52650604;