chr16-67164874-C-A

Position:

• chr16-67164874-C-A

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_Moderate BP6_Very_Strong BP7 BS1 BS2

The NM_001374675.1(HSF4):​c.63C>A​(p.Leu21=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000804 in 1,607,702 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00041 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00084 (0 hom.)
• Consequence: HSF4 NM_001374675.1 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -1.50

Genes affected

HSF4 (HGNC:5227): (heat shock transcription factor 4) Heat-shock transcription factors (HSFs) activate heat-shock response genes under conditions of heat or other stresses. HSF4 lacks the carboxyl-terminal hydrophobic repeat which is shared among all vertebrate HSFs and has been suggested to be involved in the negative regulation of DNA binding activity. Two alternatively spliced transcripts encoding distinct isoforms and possessing different transcriptional activity have been described. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -19 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.27).
• BP6: Variant 16-67164874-C-A is Benign according to our data. Variant chr16-67164874-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 887736.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.5 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000844 (1229/1455380) while in subpopulation NFE AF= 0.00105 (1166/1111008). AF 95% confidence interval is 0.000999. There are 0 homozygotes in gnomad4_exome. There are 607 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 63 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSF4	NM_001374675.1	c.63C>A	p.Leu21=	synonymous_variant	1/13	ENST00000521374.6
HSF4	NM_001040667.3	c.63C>A	p.Leu21=	synonymous_variant	3/15
HSF4	NM_001374674.1	c.63C>A	p.Leu21=	synonymous_variant	1/13
HSF4	NM_001538.4	c.63C>A	p.Leu21=	synonymous_variant	3/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSF4	ENST00000521374.6	c.63C>A	p.Leu21=	synonymous_variant	1/13	1	NM_001374675.1	P4

Frequencies

GnomAD3 genomes AF: 0.000414 AC: 63 AN: 152204 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000169

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000779

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000374 AC: 84 AN: 224704 Hom.: 0 AF XY: 0.000345 AC XY: 43 AN XY: 124736

Gnomad AFR exome AF: 0.000155

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.000638

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000778

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000844 AC: 1229 AN: 1455380 Hom.: 0 Cov.: 31 AF XY: 0.000838 AC XY: 607 AN XY: 723940

Gnomad4 AFR exome AF: 0.000389

Gnomad4 AMR exome AF: 0.0000225

Gnomad4 ASJ exome AF: 0.000846

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000605

Gnomad4 NFE exome AF: 0.00105

Gnomad4 OTH exome AF: 0.000399

GnomAD4 genome AF: 0.000414 AC: 63 AN: 152322 Hom.: 0 Cov.: 32 AF XY: 0.000376 AC XY: 28 AN XY: 74482

Gnomad4 AFR AF: 0.000168

Gnomad4 AMR AF: 0.000131

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000779

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000359 Hom.: 0

Bravo AF: 0.000416

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2022	HSF4: BP4, BP7 -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Cataract 5 multiple types Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.27
CADD	Benign	9.8
DANN	Benign	0.86

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

LitVar

Other links and lift over

dbSNP: rs372135101; hg19: chr16-67198777; COSMIC: COSV99263627; COSMIC: COSV99263627;