22-29742468-A-G

Position:

• chr22-29742468-A-G

Variant summary

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

The ENST00000344318.4(ZMAT5):​c.140T>C​(p.Ile47Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,570 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I47V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: ZMAT5 ENST00000344318.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.04

Genes affected

ZMAT5 (HGNC:28046): (zinc finger matrin-type 5) Predicted to enable zinc ion binding activity. Predicted to be involved in RNA splicing. Located in nucleoplasm. Part of U12-type spliceosomal complex. [provided by Alliance of Genome Resources, Apr 2022]

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/exons	MANE	Protein	UniProt
ZMAT5	NM_001003692.2	c.140T>C	p.Ile47Thr	missense_variant	3/6	ENST00000344318.4	NP_001003692.1
ZMAT5	NM_001318129.2	c.140T>C	p.Ile47Thr	missense_variant	3/6		NP_001305058.1
ZMAT5	NM_019103.3	c.140T>C	p.Ile47Thr	missense_variant	4/7		NP_061976.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ZMAT5	ENST00000344318.4	c.140T>C	p.Ile47Thr	missense_variant	3/6	1	NM_001003692.2	ENSP00000344241	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460570 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 726618

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: 0.00

GnomAD4 genome Cov.: 33

EpiCase AF: 0.00

EpiControl AF: 0.0000593

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

Dec 07, 2023

The c.140T>C (p.I47T) alteration is located in exon 4 (coding exon 2) of the ZMAT5 gene. This alteration results from a T to C substitution at nucleotide position 140, causing the isoleucine (I) at amino acid position 47 to be replaced by a threonine (T). 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	0.63
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.14	T
Eigen	Uncertain	0.21
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.025	T
MetaRNN	Uncertain	0.50	T
MetaSVM	Benign	-0.59	T
MutationAssessor	Uncertain	2.8	M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Uncertain	-3.0	D
REVEL	Uncertain	0.55
Sift	Benign	0.048	D
Sift4G	Uncertain	0.015	D
Polyphen		0.048	B
Vest4		0.73
MutPred		0.45		Gain of helix (P = 0.0022);
MVP		0.20
ClinPred		0.98	D
GERP RS		5.4
Varity_R		0.22
gMVP		0.76

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-30138457;