rs1320947604

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_004387.4(NKX2-5):​c.377A>G​(p.Glu126Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,316 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict 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. E126A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

NKX2-5
NM_004387.4 missense

Scores

4
14

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.54

Publications

0 publications found
Variant links:
Genes affected
NKX2-5 (HGNC:2488): (NK2 homeobox 5) This gene encodes a homeobox-containing transcription factor. This transcription factor functions in heart formation and development. Mutations in this gene cause atrial septal defect with atrioventricular conduction defect, and also tetralogy of Fallot, which are both heart malformation diseases. Mutations in this gene can also cause congenital hypothyroidism non-goitrous type 5, a non-autoimmune condition. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009]
NKX2-5 Gene-Disease associations (from GenCC):
  • atrial septal defect 7
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Orphanet
  • hypothyroidism, congenital, nongoitrous, 5
    Inheritance: AD, Unknown Classification: DEFINITIVE, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • NKX2.5-related congenital, conduction and myopathic heart disease
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • tetralogy of fallot
    Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
  • conotruncal heart malformations
    Inheritance: SD, AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • athyreosis
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • familial atrial fibrillation
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • familial bicuspid aortic valve
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • familial isolated congenital asplenia
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • dilated cardiomyopathy
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 19 uncertain in NM_004387.4
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.25450864).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NKX2-5NM_004387.4 linkc.377A>G p.Glu126Gly missense_variant Exon 2 of 2 ENST00000329198.5 NP_004378.1
NKX2-5NM_001166176.2 linkc.*176A>G 3_prime_UTR_variant Exon 2 of 2 NP_001159648.1
NKX2-5NM_001166175.2 linkc.*330A>G 3_prime_UTR_variant Exon 2 of 2 NP_001159647.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NKX2-5ENST00000329198.5 linkc.377A>G p.Glu126Gly missense_variant Exon 2 of 2 1 NM_004387.4 ENSP00000327758.4
NKX2-5ENST00000424406.2 linkc.*330A>G 3_prime_UTR_variant Exon 2 of 2 1 ENSP00000395378.2
NKX2-5ENST00000521848.1 linkc.*176A>G 3_prime_UTR_variant Exon 2 of 2 2 ENSP00000427906.1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152198
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
1451062
Hom.:
0
Cov.:
35
AF XY:
0.00
AC XY:
0
AN XY:
721828
African (AFR)
AF:
0.00
AC:
0
AN:
33430
American (AMR)
AF:
0.00
AC:
0
AN:
44348
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26026
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39552
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85380
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
45992
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5756
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1110446
Other (OTH)
AF:
0.00
AC:
0
AN:
60132
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152316
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74488
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
41578
American (AMR)
AF:
0.00
AC:
0
AN:
15302
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5184
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68024
Other (OTH)
AF:
0.00
AC:
0
AN:
2108
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.375
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.095
BayesDel_addAF
Benign
-0.054
T
BayesDel_noAF
Benign
-0.32
CADD
Benign
21
DANN
Uncertain
0.99
DEOGEN2
Benign
0.37
T
Eigen
Benign
-0.19
Eigen_PC
Benign
-0.16
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Benign
0.60
T
M_CAP
Uncertain
0.23
D
MetaRNN
Benign
0.25
T
MetaSVM
Benign
-0.31
T
MutationAssessor
Benign
1.2
L
PhyloP100
2.5
PrimateAI
Uncertain
0.59
T
PROVEAN
Benign
-1.3
N
REVEL
Benign
0.26
Sift
Benign
0.30
T
Sift4G
Benign
0.30
T
Vest4
0.037
ClinPred
0.54
D
GERP RS
4.2
Varity_R
0.11
gMVP
0.29
Mutation Taster
=59/41
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

Publications

Other links and lift over

dbSNP: rs1320947604; hg19: chr5-172660170; API