22-31344680-C-A

Variant summary

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

The NM_014323.3(PATZ1):c.923G>T(p.Arg308Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,594 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: 0.0000027 (0 hom.)
• Consequence: PATZ1 NM_014323.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.68

Genes affected

PATZ1 (HGNC:13071): (POZ/BTB and AT hook containing zinc finger 1) The protein encoded by this gene contains an A-T hook DNA binding motif which usually binds to other DNA binding structures to play an important role in chromatin modeling and transcription regulation. Its Poz domain is thought to function as a site for protein-protein interaction and is required for transcriptional repression, and the zinc-fingers comprise the DNA binding domain. Since the encoded protein has typical features of a transcription factor, it is postulated to be a repressor of gene expression. In small round cell sarcoma, this gene is fused to EWS by a small inversion of 22q, then the hybrid is thought to be translocated (t(1;22)(p36.1;q12). The rearrangement of chromosome 22 involves intron 8 of EWS and exon 1 of this gene creating a chimeric sequence containing the transactivation domain of EWS fused to zinc finger domain of this protein. This is a distinct example of an intra-chromosomal rearrangement of chromosome 22. Four alternatively spliced transcript variants are described for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, PATZ1

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PATZ1	NM_014323.3	c.923G>T	p.Arg308Leu	missense_variant	1/5	ENST00000266269.10
PATZ1	NM_032050.2	c.923G>T	p.Arg308Leu	missense_variant	1/4
PATZ1	NM_032051.2	c.923G>T	p.Arg308Leu	missense_variant	1/3
PATZ1	NM_032052.2	c.923G>T	p.Arg308Leu	missense_variant	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PATZ1	ENST00000266269.10	c.923G>T	p.Arg308Leu	missense_variant	1/5	1	NM_014323.3	P1
PATZ1	ENST00000351933.8	c.923G>T	p.Arg308Leu	missense_variant	1/4	1
PATZ1	ENST00000215919.3	c.923G>T	p.Arg308Leu	missense_variant	1/3	1
PATZ1	ENST00000405309.7	c.923G>T	p.Arg308Leu	missense_variant	1/5	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461594 Hom.: 0 Cov.: 32 AF XY: 0.00000550 AC XY: 4 AN XY: 727080

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: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

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

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 18, 2022

The c.923G>T (p.R308L) alteration is located in exon 1 (coding exon 1) of the PATZ1 gene. This alteration results from a G to T substitution at nucleotide position 923, causing the arginine (R) at amino acid position 308 to be replaced by a leucine (L). 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	Uncertain	0.54
BayesDel_addAF	Uncertain	0.065	T
BayesDel_noAF	Benign	-0.14
Cadd	Pathogenic	29
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.43	T;.;.;.
Eigen	Uncertain	0.36
Eigen_PC	Uncertain	0.43
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Pathogenic	0.98	D;D;D;D
M_CAP	Uncertain	0.12	D
MetaRNN	Uncertain	0.59	D;D;D;D
MetaSVM	Benign	-0.30	T
MutationAssessor	Benign	0.34	N;N;N;N
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.67	T
PROVEAN	Pathogenic	-4.6	D;D;D;D
REVEL	Uncertain	0.41
Sift	Benign	0.089	T;D;D;D
Sift4G	Benign	0.063	T;D;T;D
Polyphen		0.99	D;D;D;D
Vest4		0.51
MutPred		0.32		Loss of disorder (P = 0.0662);Loss of disorder (P = 0.0662);Loss of disorder (P = 0.0662);Loss of disorder (P = 0.0662);
MVP		0.68
MPC		2.3
ClinPred		1.0	D
GERP RS		4.8
Varity_R		0.46
gMVP		0.54

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: chr22-31740666;