NM_004387.4:c.897C>T

Variant names:

• chr5-173232647-G-A
• rs1060504828
• NM_004387.4:c.897C>T

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 2P and 11B. PM2 BP4_Strong BP6_Moderate BP7 BS2

The NM_004387.4(NKX2-5):​c.897C>T​(p.Asp299Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,460,832 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: NKX2-5 NM_004387.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 2.17
• 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: Benign. The variant received -9 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).
• BP6: Variant 5-173232647-G-A is Benign according to our data. Variant chr5-173232647-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 416512.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=2.17 with no splicing effect.
• BS2: High AC in GnomAdExome4 at 5 AD,Unknown,SD gene.

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.897C>T	p.Asp299Asp	synonymous	Exon 2 of 2	NP_004378.1
	NKX2-5	NM_001166176.2		c.*696C>T		3_prime_UTR	Exon 2 of 2	NP_001159648.1
	NKX2-5	NM_001166175.2		c.*850C>T		3_prime_UTR	Exon 2 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.897C>T	p.Asp299Asp	synonymous	Exon 2 of 2	ENSP00000327758.4
	NKX2-5	ENST00000424406.2	TSL:1	c.*850C>T		downstream_gene	N/A	ENSP00000395378.2
	NKX2-5	ENST00000521848.1	TSL:2	c.*696C>T		downstream_gene	N/A	ENSP00000427906.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1460832 Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1 AN XY: 726606

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44704

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52938

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000450 AC: 5 AN: 1111532

Other (OTH) AF: 0.00 AC: 0 AN: 60354

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Atrial septal defect 7 Benign:1

Jan 03, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	13
DANN	Benign	0.96
PhyloP100		2.2

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: rs1060504828; hg19: chr5-172659650;