chr20-49247472-T-C

Position:

• chr20-49247472-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_021035.3(ZNFX1):​c.5552A>G​(p.Asn1851Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ZNFX1 NM_021035.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.25

Genes affected

ZNFX1 (HGNC:29271): (zinc finger NFX1-type containing 1) Enables RNA binding activity. Predicted to be involved in heterochromatin assembly by small RNA. Predicted to be part of nuclear RNA-directed RNA polymerase complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ZNFX1. . Gene score misZ 2.5616 (greater than the threshold 3.09). Trascript score misZ 4.0768 (greater than threshold 3.09). GenCC has associacion of gene with immunodeficiency 91 and hyperinflammation.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZNFX1	NM_021035.3	c.5552A>G	p.Asn1851Ser	missense_variant	14/14	ENST00000396105.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZNFX1	ENST00000396105.6	c.5552A>G	p.Asn1851Ser	missense_variant	14/14	1	NM_021035.3	P1
ZNFX1	ENST00000371754.8	c.3312+4055A>G		intron_variant		1
ZNFX1	ENST00000371752.5	c.5552A>G	p.Asn1851Ser	missense_variant	14/14	5		P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461894 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 26, 2023

The c.5552A>G (p.N1851S) alteration is located in exon 14 (coding exon 13) of the ZNFX1 gene. This alteration results from a A to G substitution at nucleotide position 5552, causing the asparagine (N) at amino acid position 1851 to be replaced by a serine (S). 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	0.23
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.30	T;T
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.96	.;D
M_CAP	Benign	0.067	D
MetaRNN	Uncertain	0.67	D;D
MetaSVM	Pathogenic	0.91	D
MutationAssessor	Pathogenic	3.6	H;H
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-3.1	D;D
REVEL	Uncertain	0.64
Sift	Uncertain	0.0070	D;D
Sift4G	Uncertain	0.019	D;D
Polyphen		1.0	D;D
Vest4		0.55
MutPred		0.51		Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);
MVP		0.75
MPC		1.1
ClinPred		0.99	D
GERP RS		6.0
Varity_R		0.29
gMVP		0.71

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: rs1600982203; hg19: chr20-47864009;