22-19356246-T-C

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS2

The NM_003325.4(HIRA):c.2439A>G(p.Leu813=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000604 in 1,614,056 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0035 (3 hom., cov: 32)
  • Exomes 𝑓: 0.00031 (2 hom.)
• Consequence: HIRA NM_003325.4 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: 0.0800

Genes affected

HIRA (HGNC:4916): (histone cell cycle regulator) This gene encodes a histone chaperone that preferentially places the variant histone H3.3 in nucleosomes. Orthologs of this gene in yeast, flies, and plants are necessary for the formation of transcriptionally silent heterochomatin. This gene plays an important role in the formation of the senescence-associated heterochromatin foci. These foci likely mediate the irreversible cell cycle changes that occur in senescent cells. It is considered the primary candidate gene in some haploinsufficiency syndromes such as DiGeorge syndrome, and insufficient production of the gene may disrupt normal embryonic development. [provided by RefSeq, Jul 2008]

C22orf39 (HGNC:27012): (chromosome 22 open reading frame 39)

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.58).
• BP6: Variant 22-19356246-T-C is Benign according to our data. Variant chr22-19356246-T-C is described in ClinVar as [Benign]. Clinvar id is 727503.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.08 with no splicing effect.
• BS2: High AC in GnomAd at 525 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HIRA	NM_003325.4	c.2439A>G	p.Leu813=	synonymous_variant	20/25	ENST00000263208.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HIRA	ENST00000263208.5	c.2439A>G	p.Leu813=	synonymous_variant	20/25	1	NM_003325.4	P1
HIRA	ENST00000340170.8	c.1818A>G	p.Leu606=	synonymous_variant	16/21	1
C22orf39	ENST00000509549.5	c.*2315A>G		3_prime_UTR_variant, NMD_transcript_variant	21/24	2

Frequencies

GnomAD3 genomes AF: 0.00345 AC: 525 AN: 152150 Hom.: 3 Cov.: 32

Gnomad AFR AF: 0.0118

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00177

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00191

GnomAD3 exomes AF: 0.000847 AC: 213 AN: 251436 Hom.: 0 AF XY: 0.000611 AC XY: 83 AN XY: 135894

Gnomad AFR exome AF: 0.0111

Gnomad AMR exome AF: 0.000868

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000307 AC: 449 AN: 1461788 Hom.: 2 Cov.: 31 AF XY: 0.000257 AC XY: 187 AN XY: 727214

Gnomad4 AFR exome AF: 0.0114

Gnomad4 AMR exome AF: 0.000827

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000348

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.000364

GnomAD4 genome AF: 0.00345 AC: 526 AN: 152268 Hom.: 3 Cov.: 32 AF XY: 0.00349 AC XY: 260 AN XY: 74454

Gnomad4 AFR AF: 0.0118

Gnomad4 AMR AF: 0.00176

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00189

Alfa AF: 0.00176 Hom.: 2

Bravo AF: 0.00383

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2024	HIRA: BP4, BP7, BS1, BS2 -
Benign, criteria provided, single submitter	clinical testing	Invitae	Dec 13, 2018	- -

HIRA-related disorder Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 11, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.58
Cadd	Benign	5.0
Dann	Benign	0.91

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: rs1136028; hg19: chr22-19343769;