19-929784-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_005224.3(ARID3A):c.256C>T(p.Pro86Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000122 in 1,398,064 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: ARID3A NM_005224.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.225

Genes affected

ARID3A (HGNC:3031): (AT-rich interaction domain 3A) This gene encodes a member of the ARID (AT-rich interaction domain) family of DNA binding proteins. It was found by homology to the Drosophila dead ringer gene, which is important for normal embryogenesis. Other ARID family members have roles in embryonic patterning, cell lineage gene regulation, cell cycle control, transcriptional regulation, and possibly in chromatin structure modification. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04916984).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARID3A	NM_005224.3	c.256C>T	p.Pro86Ser	missense_variant	2/9	ENST00000263620.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARID3A	ENST00000263620.8	c.256C>T	p.Pro86Ser	missense_variant	2/9	1	NM_005224.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000673 AC: 1 AN: 148550 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 80782

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: 0.0000167

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000122 AC: 17 AN: 1398064 Hom.: 0 Cov.: 35 AF XY: 0.00000869 AC XY: 6 AN XY: 690818

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: 0.0000157

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

Feb 22, 2023

The c.256C>T (p.P86S) alteration is located in exon 2 (coding exon 1) of the ARID3A gene. This alteration results from a C to T substitution at nucleotide position 256, causing the proline (P) at amino acid position 86 to be replaced by a serine (S). 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	Benign	0.069
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.61
Cadd	Benign	14
Dann	Uncertain	0.98
DEOGEN2	Benign	0.073	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.063	N
LIST_S2	Benign	0.57	T
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.049	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.2	M
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-0.93	N
REVEL	Benign	0.014
Sift	Benign	0.11	T
Sift4G	Benign	0.84	T
Polyphen		0.0020	B
Vest4		0.064
MutPred		0.28		Gain of phosphorylation at P86 (P = 0.0013);
MVP		0.14
MPC		0.16
ClinPred		0.041	T
GERP RS		-0.53
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.042
gMVP		0.057

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: rs774786700; hg19: chr19-929784;