20-33788926-G-A

Variant names:

• chr20-33788926-G-A
• rs774532521
• NM_001282933.2:c.1916G>A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001282933.2(ZNF341):​c.1916G>A​(p.Arg639Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,780 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: ZNF341 NM_001282933.2 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 9.37

Genes affected

ZNF341 (HGNC:15992): (zinc finger protein 341) Enables DNA binding activity and DNA-binding transcription activator activity. Predicted to be involved in regulation of transcription, DNA-templated. Located in nucleus. Implicated in hyper IgE recurrent infection syndrome 3. [provided by Alliance of Genome Resources, Apr 2022]

ZNF341-AS1 (HGNC:50736): (ZNF341 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZNF341	NM_001282933.2	c.1916G>A	p.Arg639Lys	missense_variant	Exon 13 of 15	ENST00000375200.6	NP_001269862.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZNF341	ENST00000375200.6	c.1916G>A	p.Arg639Lys	missense_variant	Exon 13 of 15	1	NM_001282933.2	ENSP00000364346.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251380 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135902

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461780 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727180

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:1

Jul 12, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1895G>A (p.R632K) alteration is located in exon 13 (coding exon 13) of the ZNF341 gene. This alteration results from a G to A substitution at nucleotide position 1895, causing the arginine (R) at amino acid position 632 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Dec 11, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with lysine, which is basic and polar, at codon 632 of the ZNF341 protein (p.Arg632Lys). This variant is present in population databases (rs774532521, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with ZNF341-related conditions. ClinVar contains an entry for this variant (Variation ID: 2092185). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.37
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.060	.;T
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Benign	0.024	T
MetaRNN	Uncertain	0.72	D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.64	.;N
PrimateAI	Pathogenic	0.93	D
PROVEAN	Benign	-1.9	N;N
REVEL	Benign	0.28
Sift	Benign	0.17	T;T
Sift4G	Benign	0.16	T;T
Polyphen		1.0	D;D
Vest4		0.74
MutPred		0.37		.;Gain of methylation at R639 (P = 0.0274);
MVP		0.47
MPC		0.83
ClinPred		0.90	D
GERP RS		4.7
Varity_R		0.41
gMVP		0.64

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: rs774532521; hg19: chr20-32376732;