19-51873090-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001370449.1(ZNF577):c.900C>G(p.Cys300Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: ZNF577 NM_001370449.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.147

Genes affected

ZNF577 (HGNC:28673): (zinc finger protein 577) Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.889

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZNF577	NM_001370449.1	c.900C>G	p.Cys300Trp	missense_variant	6/6	ENST00000638348.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZNF577	ENST00000638348.2	c.900C>G	p.Cys300Trp	missense_variant	6/6	2	NM_001370449.1	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250834 Hom.: 0 AF XY: 0.00000738 AC XY: 1 AN XY: 135538

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.00000884

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461870 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727240

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: 0.00000270

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 17, 2022

The c.900C>G (p.C300W) alteration is located in exon 7 (coding exon 4) of the ZNF577 gene. This alteration results from a C to G substitution at nucleotide position 900, causing the cysteine (C) at amino acid position 300 to be replaced by a tryptophan (W). 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	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
Cadd	Benign	22
Dann	Uncertain	0.99
DEOGEN2	Benign	0.32	T;.;.;.
Eigen	Uncertain	0.23
Eigen_PC	Benign	-0.11
FATHMM_MKL	Benign	0.23	N
LIST_S2	Benign	0.75	T;.;T;T
M_CAP	Benign	0.027	D
MetaRNN	Pathogenic	0.89	D;D;D;D
MetaSVM	Uncertain	0.57	D
MutationAssessor	Pathogenic	4.1	H;.;.;.
MutationTaster	Benign	0.98	D;D;D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-11	D;.;D;.
REVEL	Uncertain	0.45
Sift	Pathogenic	0.0	D;.;D;.
Sift4G	Pathogenic	0.0	D;.;D;.
Polyphen		1.0	D;D;D;.
Vest4		0.51
MutPred		0.71		Gain of MoRF binding (P = 0.0212);.;.;Gain of MoRF binding (P = 0.0212);
MVP		0.89
MPC		0.50
ClinPred		1.0	D
GERP RS		1.9
Varity_R		0.89
gMVP		0.16

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: rs752033229; hg19: chr19-52376343;