20-59747791-G-A

Position:

• chr20-59747791-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_080672.5(PHACTR3):​c.314G>A​(p.Arg105Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000547 in 1,461,760 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: PHACTR3 NM_080672.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.65

Genes affected

PHACTR3 (HGNC:15833): (phosphatase and actin regulator 3) This gene encodes a member of the phosphatase and actin regulator protein family. The encoded protein is associated with the nuclear scaffold in proliferating cells, and binds to actin and the catalytic subunit of protein phosphatase-1, suggesting that it functions as a regulatory subunit of protein phosphatase-1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BS2: High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PHACTR3	NM_080672.5	c.314G>A	p.Arg105Gln	missense_variant	3/13	ENST00000371015.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PHACTR3	ENST00000371015.6	c.314G>A	p.Arg105Gln	missense_variant	3/13	1	NM_080672.5	A1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000547 AC: 8 AN: 1461760 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727168

Gnomad4 AFR exome AF: 0.0000597

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: 0.00000540

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000469 Hom.: 0

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

Mar 04, 2024

The c.314G>A (p.R105Q) alteration is located in exon 3 (coding exon 3) of the PHACTR3 gene. This alteration results from a G to A substitution at nucleotide position 314, causing the arginine (R) at amino acid position 105 to be replaced by a glutamine (Q). 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	0.13
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.38	.;T;.;.;.;.
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Pathogenic	0.97	D;D;D;.;.;D
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.68	D;D;D;D;D;D
MetaSVM	Benign	-0.60	T
MutationAssessor	Pathogenic	3.1	.;M;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Uncertain	0.49	T
PROVEAN	Uncertain	-2.9	D;D;D;D;D;D
REVEL	Benign	0.19
Sift	Uncertain	0.0020	D;D;D;D;D;D
Sift4G	Uncertain	0.017	D;D;D;D;D;D
Polyphen		0.95, 0.95	.;P;.;.;.;P
Vest4		0.81
MutPred		0.34		.;Loss of MoRF binding (P = 0.0312);.;.;.;.;
MVP		0.72
MPC		0.40
ClinPred		0.99	D
GERP RS		4.3
Varity_R		0.47
gMVP		0.30

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: rs2039428587; hg19: chr20-58322846;