5-173235011-G-C

Variant names:

• chr5-173235011-G-C
• rs28936670
• NM_004387.4:c.73C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004387.4(NKX2-5):​c.73C>G​(p.Arg25Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. R25C) has been classified as Benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: NKX2-5 NM_004387.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.972
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.157776).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004387.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NKX2-5	NM_004387.4	MANE Select	c.73C>G	p.Arg25Gly	missense	Exon 1 of 2	NP_004378.1
	NKX2-5	NM_001166176.2		c.73C>G	p.Arg25Gly	missense	Exon 1 of 2	NP_001159648.1
	NKX2-5	NM_001166175.2		c.73C>G	p.Arg25Gly	missense	Exon 1 of 2	NP_001159647.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NKX2-5	ENST00000329198.5	TSL:1 MANE Select	c.73C>G	p.Arg25Gly	missense	Exon 1 of 2	ENSP00000327758.4
	NKX2-5	ENST00000424406.2	TSL:1	c.73C>G	p.Arg25Gly	missense	Exon 1 of 2	ENSP00000395378.2
	NKX2-5	ENST00000521848.1	TSL:2	c.73C>G	p.Arg25Gly	missense	Exon 1 of 2	ENSP00000427906.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.081
BayesDel_addAF	Benign	-0.010	T
BayesDel_noAF	Benign	-0.25
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.41	T
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.25
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.23	T
M_CAP	Uncertain	0.21	D
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.65	T
MutationAssessor	Benign	1.0	L
PhyloP100		0.97
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-0.37	N
REVEL	Benign	0.18
Sift	Benign	0.15	T
Sift4G	Benign	0.15	T
Polyphen		0.0	B
Vest4		0.099
MutPred		0.37		Gain of glycosylation at S26 (P = 0.0593)
MVP		0.79
MPC		1.5
ClinPred		0.50	T
GERP RS		3.9
PromoterAI		-0.053	Neutral
Varity_R		0.13
gMVP		0.36
Mutation Taster		=83/17	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

Other links and lift over

dbSNP: rs28936670; hg19: chr5-172662014;